JB/T 4311.10-1991 Indirect resistance furnace SG series experimental crucible resistance furnace
Some standard content:
Mechanical Industry Standard of the People's Republic of China
Indirect Resistance Furnace
SG Series Experimental Resistance Furnace
Subject Content and Scope of Application
JB4311.10-91
Replaces JB4311.1087
This standard specifies the requirements for SG series experimental crucible resistance furnace products (hereinafter referred to as crucible furnace), including variety specifications, technical performance, and ordering and supply. This standard is mainly applicable to experimental crucible resistance furnaces for melting and heat preservation in natural atmosphere. Cited standards
GB10067.1
GB10067.4
GB10066.1
GB10066.4
ZBK60001
.JB/Z146
3 Terms
Basic technical requirements for electric heating equipment Part 1 General part Basic technical requirements for electric heating equipment Part 4 Test methods for indirect resistance furnace electric heating equipment Part 1 General part Test methods for electric heating equipment Part 4 Safety of indirect resistance furnace electric heating equipment Part 1 General part Method for compiling product models of electric heating equipment
Painting process for electrical products
According to the provisions of Chapter 3 of GB10066.4.
4 Product classification
4.1 Varieties and specifications
4.1.1 Crucible furnaces are divided into multiple varieties according to the structural type and the maximum working temperature, as shown in Table 1. Table
(SG13)
Top loading
Bottom loading
Note: The variety codes in Tables 1 to 5 are enclosed in brackets, indicating that the variety is a reserved variety. Approved by the Ministry of Machinery and Electronics Industry on June 28, 1991
Maximum working temperature
Implementation on July 1, 1992
JB4311.10-91
Other maximum working temperature values are allowed to be used in enterprise product standards. At this time, the numbers in the variety code (maximum working temperature divided by 100, without decimals) should be changed accordingly.
4.1.2 Furnaces of various varieties are divided into multiple specifications according to the size of the working area. The size of the working area (diameter × height) should meet the following requirements: Minimum specification: 100mm × 150mm
Other specifications: diameter and height increase by 50mm to 300mm and 350mm respectively. The position of the working area in the furnace shall be indicated on the attached drawing of the specification. 4.1.3 Each crucible furnace manufacturer may choose from the varieties and specifications specified in Articles 4.1.1 and 4.1.2, and formulate its own crucible furnace enterprise product standards accordingly.
4.2 Model
The model of the crucible furnace shall be compiled in accordance with ZBK60001, and the technical level code shall be determined in accordance with Article 7.3 of this standard. 4.3 Main parameters
The following items shall be listed separately for each model of furnace in the enterprise product standard: power supply voltage, V,
power supply frequency, Hz;bzxz.net
rated power, kW,
heating element connection method (applicable to three-phase crucible furnace), f.
maximum operating temperature, ℃;
9. Working area size, mm;
Furnace temperature stability, ℃,
Empty furnace loss, kW,
j. Empty furnace heating time, min;
k. Weight, kg;
1. Overall dimensions, mm.
When the crucible furnace is powered by a voltage regulator or transformer, the working voltage should be listed separately. Technical requirements
General requirements
The furnace should comply with the provisions of Chapter 5 of GB10067.4. When there is a difference with the provisions of this standard, this standard shall prevail. 5.2 Supplementary requirements for design and manufacturing
5.2.1 Overall design
The furnace is mainly composed of a furnace body and a controller, which can be combined into one. The furnace body is a vertical structure, which is divided into two basic structural types: top loading furnace and bottom loading furnace according to different loading positions. The opening of the top loading furnace is located at the top of the furnace, and the furnace mouth is sealed with a furnace cover. The opening of the bottom-loading furnace is located at the bottom of the furnace, and a crucible lifting platform is provided at the bottom. When the lifting platform rises to the top position, the crucible containing the charge enters the furnace; when it descends to the bottom position, the crucible can be easily taken out and put in. 5.2.2 Furnace Shell
The furnace shell is made of steel plate and should be properly reinforced. All welds should be reliably welded to form a rigid structure. The furnace mouth plate should be made of materials with small thermal deformation, and the furnace door structure should be able to avoid the warping of the furnace mouth plate. Except for the furnace shell made of stainless steel or surface-treated steel plates, its outer surface should be sprayed with heat-resistant protective paint, and the paint accuracy should not be lower than the grade in JB/Z146.
JB4311.10—91
5.2.3 Furnace Lining
The material and structure of the furnace lining should meet the performance requirements for crucible furnaces (see Article 5.3). The lining of the C-class furnace should be made of refractory fiber except for the load-bearing and foundation-sensitive parts. The service life of the furnace lining should be no less than 3 years for ordinary refractory lining furnaces; and no less than one and a half years for refractory fiber lining crucible furnaces. However, for crucible furnaces where the lining needs to be replaced at the same time as the heating elements, it should not be less than the service life of the heating elements. 5.2.4 Heating elements
For crucible furnaces with a maximum operating temperature not exceeding 1200°C, the heating elements are generally made of electric heating alloys; for those above 1200°C, silicon carbide, molybdenum disilicide or materials with the same or better comprehensive properties are used. Furnaces using non-metallic heating elements such as silicon carbide should be equipped with multi-tap transformers or other voltage regulating devices, and the heating elements should be guaranteed to work normally throughout their entire service life. The service life of the heating element is limited to an input power of no less than 15% of the rated power at the rated power supply voltage or the maximum operating voltage, and should comply with the provisions of Table 2.
Product generation
SG10、SGD19
SG12、SGD12
(SG13)、SG14、SGD14
SG16、SGD16
Expiration period》
5.2.5 Furnace cover and crucible lifting platform
The furnace cover of a top-loading furnace shall have good fire resistance and heat insulation performance and ensure that the furnace mouth is reliably sealed. The furnace cover of a larger crucible furnace shall be equipped with a light and flexible opening and closing mechanism, and a separate furnace cover may be used for a small furnace. A bottom-loading furnace shall be equipped with a crucible lifting platform that can be manually or electrically operated and can move up and down flexibly and smoothly. The bottom plate of the lifting platform shall have good fire resistance and heat insulation performance, and the furnace bottom opening shall be reliably sealed when the lifting platform rises to the top position. The lifting platform of a Class C bottom-loading furnace shall be electrically operated.
When it is required to open an opening in the center of the furnace body for charging, sampling and observation, it can be proposed in accordance with Article 9.2. The opening should be equipped with a refractory plug.
5.2.6 Measurement, control and recording
The measurement, control and recording of the crucible furnace shall comply with the provisions of Article 5.2.7 of GB10067.4 except Articles 5.2.7.7 and 5.2.7.10 and the following supplementary provisions.
Class C furnaces should be equipped with a digital display program temperature control instrument with a microprocessor and a resolution of not less than 1°C. The digital display should be clear and legible. The instrument should be equipped with an external socket for connecting a recorder and a printer. When required (see Article 9.2), the furnace should be equipped with an over-temperature controller or an over-temperature fuse. The over-temperature control circuit should be an independent circuit, and the controller should be able to select the over-temperature control point. When the furnace temperature reaches the over-temperature control point, the controller should be activated to cut off the heating power of the furnace and make the control system sound an alarm. Unless manually started, the furnace will remain in the power-off state. The accuracy of the over-temperature controller should not be lower than Class 1.
5.2.7 Grounding
The grounding of the crucible furnace should comply with the requirements of Article 10.4 of GB5959.1, and the grounding screw of its grounding terminal should be no less than M6. 5.3 Performance requirements
The performance of the crucible furnace should comply with the requirements of Article 5.3 and the following articles of GB10067.4. 5.3.1 Working temperature
JB4311.10—91
Unless otherwise specified (see Article 4.1.1), the working temperature of the crucible furnace should be within the range listed in Table 3. Table
SG10, SGD10
SG12, SGD12
(SG13)
SG14, SGD14
SG16, SGD16
Working temperature
7501000
950~1200
1150~1300
1150~1400
1350~1600
Within the working temperature range, the furnace shall meet the furnace temperature stability requirements of Article 5.3.2. 5.3.2 Furnace temperature stability
The furnace temperature stability of the furnace shall not exceed the following specified range: Class A furnace
Class B furnace
Class C furnace
±10℃,
±4℃,
±1℃.
5.3.3 Surface temperature rise
When the furnace is in the thermally stable state at the highest operating temperature, the surface temperature rise of the furnace shell shall not exceed 100K; the surface temperature rise of the operating handle shall not exceed 30K.
5.3.4 Empty furnace heating time
Unless otherwise required (see Article 9.2), the empty furnace heating time of the crucible furnace shall comply with the provisions of Table 4. Table
Code, No.
SG10, SGD10
SG12, SGD12, (SG13)
SG14, SGD14
SG16, SGD16
5.3.5 Rated power and empty furnace loss
Empty furnace heating time
The rated power of the crucible furnace should take into account factors such as the working area size, empty furnace heating time and maximum working temperature, and be specified in the enterprise product standards.
The empty furnace loss of the crucible furnace should be specified in the enterprise product standards, and its ratio to the rated power should comply with the provisions of Table 5. 5.4 Complete set requirements
The complete set supply scope of the crucible furnace specified by the supplier should be listed in the enterprise product standards, generally including the following items: 5.4.1
a. Additional furnace body;
controller,
temperature instrument;
thermocouple;
compensation wire;
spare parts,
"Product Manual", including necessary drawings. JB4311.10-91
The specific contents of the above items should be listed in the enterprise product standards, including model, specification and quantity. If the purchaser has different requirements for the items specified by the supplier, it can be proposed according to Article 9.2. Table. 5
SG10、SGD10
SG12、SGD12
(SG13)
SG14、SGD14
SG1S、SGD16
Working area L
Empty furnace loss/rated power
When the following accessories or devices are required, they can be proposed in accordance with Article 9.2, and the necessary technical conditions shall be agreed upon by the supplier and the buyer. 5.4.2
a. Digital display program temperature control instrument with microprocessor; b. Temperature recorder.
Test method
The test of the furnace shall be carried out in accordance with the corresponding provisions of GB10066.1 and GB10066.4 and the following supplementary requirements. Measurement of surface temperature rise
The position of the measuring point is stipulated as follows:
The measuring point is at any point on the outer surface of the furnace shell, operating handle, etc., except for the furnace cover and upper cover plate, and 75mm from the edge of the heating element and thermocouple lead-out hole and the center of the furnace lining penetrating fastener, and 90mm from the edge of the non-metallic heating element lead-out hole and observation hole. The measurement should be carried out with a surface thermometer with a measurement accuracy of not less than Class 5, and a glass thermometer shall not be used. Inspection rules and classification
The inspection and classification of crucible furnaces shall be carried out in accordance with Chapter 7 and the following provisions of GB10067.1. 7.1 The factory inspection items of crucible furnace are as follows: general inspection; safety inspection; inspection of working area size; inspection of furnace lining quality; inspection of manufacturing quality of heating elements; measurement of cold DC resistance of metal heating elements; inspection of short circuit of heating elements to furnace shell, measurement of insulation resistance (applicable to furnaces that are baked before leaving the factory); calibration of temperature instruments; cold inspection of the operation or action of the motion mechanism (i.e. furnace cover opening and closing mechanism or crucible lifting mechanism); inspection of interlocking alarm system; inspection of accessories, including inspection of model, specification and factory qualification certificate; scope of supply, including inspection of completeness of factory technical documents; packaging inspection.
7.2 The type inspection items of crucible furnace are as follows: a.
JB4311.10—91
All factory inspection items (under type test conditions); circuit test;
Measurement of empty furnace heating time;
Measurement of rated power;
Measurement of maximum working temperature;
Measurement of empty furnace loss;
Measurement of furnace temperature stability;
Measurement of surface temperature rise;
Inspection after hot test.
When required (see Article 9.2), a loading operation test should be carried out. 7.3 The technical classification of crucible furnaces is as specified in Table 6. Crucible furnaces of various technical levels should fully meet the requirements listed in the table and other provisions of this standard.
Crumb lifting platform
Temperature instrument
According to the requirements of Article 5.2.3
According to Article 5.2.5
According to the requirements of Article 5.2.7.3 of GB10067.4 and Article 5.2.6 of this standardAccording to the requirements of Articles 5.3.2 and 5.3.4
Can provide complete equipment according to the requirements of Article 5.4.1 Crucible furnace National grade superior products should meet the requirements of Class C above in terms of technology. Marking, packaging, transportation and storage
Can provide complete equipment according to the requirements of Articles 5.4.1 and 5.4.2
The marking, packaging, transportation and storage of crucible furnaces shall comply with the provisions of Chapter 8 of GB10067.1. The following items shall be marked on the nameplate of the furnace:
Product model and name;
Power supply voltage, V;
Power supply frequency, Hz;
Number of phases;
Rated power, kW,
Connection of heating elements (applicable to three-phase crucible furnace); Maximum working temperature, ℃;
Working area dimensions, mm
Weight, kg;
Product number:
Date of manufacture;
Name of manufacturer (country name shall be indicated for export products). When the crucible furnace is equipped with a voltage regulator or transformer, the working voltage shall be listed separately. Ordering and supply
9.1 The ordering and supply of crucible furnaces shall comply with the provisions of Chapter 9 of GB10067.1. 68
JB4311.1091
9.2 If the purchaser has the following special requirements, he may propose to the supplier a.
Different requirements for unit system, power supply voltage, power supply frequency, etc. (see Article 5.1.1.1 of GB10067.1); Different requirements for use environment (see Article 5.1.2 of GB10067.1); Additional requirements for safety and environmental protection (see Article 5.1.5.1 of GB10067.1); Special requirements for packaging (see Article 8.2.5 of GB10067.1); Different requirements for power supply (see Article 5.2.2 of GB10067.4); Different requirements for the type of temperature instrument, etc. (see Article 5.2.7.3 of GB10067.4); requiring the provision of openings for adding materials, sampling and observation (see Article 5.2.5); requiring the provision of over-temperature controllers or over-temperature fuses (see Article 5.2.6); different requirements for the heating time of an empty furnace (see Article 5.3.4); different requirements for the supply items specified by the supplier (see Article 5.4.1); requiring the provision of a digital display program temperature control instrument with a microprocessor (see Article 5.4.2 a); requiring the provision of a temperature recorder (see Article 5.4.2 b); 1
m: requiring a charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the demander. However, the special requirements that can actually be selected by the demander shall be determined by the supplier in accordance with their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supply and demand parties when ordering. Additional Notes:
This standard was proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun.5 Rated power and empty furnace loss
Empty furnace heating time
The rated power of the crucible furnace should take into account factors such as the working area size, empty furnace heating time and maximum working temperature, and should be specified in the enterprise product standards.
The empty furnace loss of the crucible furnace should be specified in the enterprise product standards, and its ratio to the rated power should comply with the provisions of Table 5. 5.4 Complete set requirements
The complete set supply scope of the crucible furnace specified by the supplier should be listed in the enterprise product standards, which generally includes the following items: 5.4.1
a. Furnace body;
Controller,
Temperature instrument;
Thermocouple;
Compensation wire;
Spare parts,
Product manual, including necessary drawings. JB4311.10—91
The specific contents of the above items should be listed in the enterprise product standards, including model, specification and quantity. If the purchaser has different requirements for the items specified by the supplier, it can be proposed in accordance with Article 9.2. Table 5
SG10, SGD10
SG12, SGD12
(SG13)
SG14, SGD14
SG1S, SGD16
Working area L
Empty furnace loss/rated power
When the following accessories or devices are required to be provided, they can be proposed in accordance with Article 9.2, and the necessary technical conditions shall be agreed upon by the supply and demand parties. 5.4.2
a. Digital display program temperature control instrument with microprocessor; b. Temperature recorder.
Test method
The test of the furnace shall be carried out in accordance with the corresponding provisions of GB10066.1 and GB10066.4 and the following supplementary requirements. Measurement of surface temperature rise
The position of the measuring point is stipulated as follows:
The measuring point is at any point on the outer surface of the furnace shell, operating handle, etc., except for the furnace cover and upper cover plate, and 75mm from the edge of the heating element and thermocouple lead-out hole and the center of the furnace lining penetrating fastener, and 90mm from the edge of the non-metallic heating element lead-out hole and observation hole. The measurement should be carried out with a surface thermometer with a measurement accuracy of not less than Class 5, and a glass thermometer shall not be used. Inspection rules and classification
The inspection and classification of crucible furnaces shall be carried out in accordance with Chapter 7 and the following provisions of GB10067.1. 7.1 The factory inspection items of crucible furnace are as follows: general inspection; safety inspection; inspection of working area size; inspection of furnace lining quality; inspection of manufacturing quality of heating elements; measurement of cold DC resistance of metal heating elements; inspection of short circuit of heating elements to furnace shell, measurement of insulation resistance (applicable to furnaces that are baked before leaving the factory); calibration of temperature instruments; cold inspection of the operation or action of the motion mechanism (i.e. furnace cover opening and closing mechanism or crucible lifting mechanism); inspection of interlocking alarm system; inspection of accessories, including inspection of model, specification and factory qualification certificate; scope of supply, including inspection of completeness of factory technical documents; packaging inspection.
7.2 The type inspection items of crucible furnace are as follows: a.
JB4311.10—91
All factory inspection items (under type test conditions); circuit test;
Measurement of empty furnace heating time;
Measurement of rated power;
Measurement of maximum working temperature;
Measurement of empty furnace loss;
Measurement of furnace temperature stability;
Measurement of surface temperature rise;
Inspection after hot test.
When required (see Article 9.2), a loading operation test should be carried out. 7.3 The technical classification of crucible furnaces is as specified in Table 6. Crucible furnaces of various technical levels should fully meet the requirements listed in the table and other provisions of this standard.
Crumb lifting platform
Temperature instrument
According to the requirements of Article 5.2.3
According to Article 5.2.5
According to the requirements of Article 5.2.7.3 of GB10067.4 and Article 5.2.6 of this standardAccording to the requirements of Articles 5.3.2 and 5.3.4
Can provide complete equipment according to the requirements of Article 5.4.1 Crucible furnace National grade superior products should meet the requirements of Class C above in terms of technology. Marking, packaging, transportation and storage
Can provide complete equipment according to the requirements of Articles 5.4.1 and 5.4.2
The marking, packaging, transportation and storage of crucible furnaces shall comply with the provisions of Chapter 8 of GB10067.1. The following items shall be marked on the nameplate of the furnace:
Product model and name;
Power supply voltage, V;
Power supply frequency, Hz;
Number of phases;
Rated power, kW,
Connection of heating elements (applicable to three-phase crucible furnace); Maximum working temperature, ℃;
Working area dimensions, mm
Weight, kg;
Product number:
Date of manufacture;
Name of manufacturer (country name shall be indicated for export products). When the crucible furnace is equipped with a voltage regulator or transformer, the working voltage shall be listed separately. Ordering and supply
9.1 The ordering and supply of crucible furnaces shall comply with the provisions of Chapter 9 of GB10067.1. 68
JB4311.1091
9.2 If the purchaser has the following special requirements, he may propose to the supplier a.
Different requirements for unit system, power supply voltage, power supply frequency, etc. (see Article 5.1.1.1 of GB10067.1); Different requirements for use environment (see Article 5.1.2 of GB10067.1); Additional requirements for safety and environmental protection (see Article 5.1.5.1 of GB10067.1); Special requirements for packaging (see Article 8.2.5 of GB10067.1); Different requirements for power supply (see Article 5.2.2 of GB10067.4); Different requirements for the type of temperature instrument, etc. (see Article 5.2.7.3 of GB10067.4); requiring the provision of openings for adding materials, sampling and observation (see Article 5.2.5); requiring the provision of over-temperature controllers or over-temperature fuses (see Article 5.2.6); different requirements for the heating time of an empty furnace (see Article 5.3.4); different requirements for the items specified by the supplier (see Article 5.4.1); requiring the provision of a digital display program temperature control instrument with a microprocessor (see Article 5.4.2 a); requiring the provision of a temperature recorder (see Article 5.4.2 b); 1
m: requiring a charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the demander. However, the special requirements that can actually be selected by the demander shall be determined by the supplier in accordance with their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supply and demand parties when ordering. Additional Notes:
This standard was proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun.5 Rated power and empty furnace loss
Empty furnace heating time
The rated power of the crucible furnace should take into account factors such as the working area size, empty furnace heating time and maximum working temperature, and should be specified in the enterprise product standards.
The empty furnace loss of the crucible furnace should be specified in the enterprise product standards, and its ratio to the rated power should comply with the provisions of Table 5. 5.4 Complete set requirements
The complete set supply scope of the crucible furnace specified by the supplier should be listed in the enterprise product standards, generally including the following items: 5.4.1
a. Furnace body;
Controller,
Temperature instrument;
Thermocouple;
Compensation wire;
Spare parts,
Product manual, including necessary drawings. JB4311.10—91
The specific contents of the above items should be listed in the enterprise product standards, including model, specification and quantity. If the purchaser has different requirements for the items specified by the supplier, it can be proposed in accordance with Article 9.2. Table 5
SG10, SGD10
SG12, SGD12
(SG13)
SG14, SGD14
SG1S, SGD16
Working area passenger volume L
Empty furnace loss/rated power
When the following accessories or devices are required to be provided, they can be proposed in accordance with Article 9.2, and the necessary technical conditions shall be agreed upon by the supply and demand parties. 5.4.2
a. Digital display program temperature control instrument with microprocessor; b. Temperature recorder.
Test method
The test of the furnace shall be carried out in accordance with the corresponding provisions of GB10066.1 and GB10066.4 and the following supplementary requirements. Measurement of surface temperature rise
The position of the measuring point is stipulated as follows:
The measuring point is at any point on the outer surface of the furnace shell, operating handle, etc., except for the furnace cover and upper cover plate, and 75mm from the edge of the heating element and thermocouple lead-out hole and the center of the furnace lining penetrating fastener, and 90mm from the edge of the non-metallic heating element lead-out hole and observation hole. The measurement should be carried out with a surface thermometer with a measurement accuracy of not less than Class 5, and a glass thermometer shall not be used. Inspection rules and classification
The inspection and classification of crucible furnaces shall be carried out in accordance with Chapter 7 and the following provisions of GB10067.1. 7.1 The factory inspection items of crucible furnace are as follows: general inspection; safety inspection; inspection of working area size; inspection of furnace lining quality; inspection of manufacturing quality of heating elements; measurement of cold DC resistance of metal heating elements; inspection of short circuit of heating elements to furnace shell, measurement of insulation resistance (applicable to furnaces that are baked before leaving the factory); calibration of temperature instruments; cold inspection of the operation or action of the motion mechanism (i.e. furnace cover opening and closing mechanism or crucible lifting mechanism); inspection of interlocking alarm system; inspection of accessories, including inspection of model, specification and factory qualification certificate; scope of supply, including inspection of completeness of factory technical documents; packaging inspection.
7.2 The type inspection items of crucible furnace are as follows: a.
JB4311.10—91
All factory inspection items (under type test conditions); circuit test;
Measurement of empty furnace heating time;
Measurement of rated power;
Measurement of maximum working temperature;
Measurement of empty furnace loss;
Measurement of furnace temperature stability;
Measurement of surface temperature rise;
Inspection after hot test.
When required (see Article 9.2), a loading operation test should be carried out. 7.3 The technical classification of crucible furnaces is as specified in Table 6. Crucible furnaces of various technical levels should fully meet the requirements listed in the table and other provisions of this standard.
Crumb lifting platform
Temperature instrument
According to the requirements of Article 5.2.3
According to Article 5.2.5
According to the requirements of Article 5.2.7.3 of GB10067.4 and Article 5.2.6 of this standardAccording to the requirements of Articles 5.3.2 and 5.3.4
Can provide complete equipment according to the requirements of Article 5.4.1 Crucible furnace National grade superior products should meet the requirements of Class C above in terms of technology. Marking, packaging, transportation and storage
Can provide complete equipment according to the requirements of Articles 5.4.1 and 5.4.2
The marking, packaging, transportation and storage of crucible furnaces shall comply with the provisions of Chapter 8 of GB10067.1. The following items shall be marked on the nameplate of the furnace:
Product model and name;
Power supply voltage, V;
Power supply frequency, Hz;
Number of phases;
Rated power, kW,
Connection of heating elements (applicable to three-phase crucible furnace); Maximum working temperature, ℃;
Working area dimensions, mm
Weight, kg;
Product number:
Date of manufacture;
Name of manufacturer (country name shall be indicated for export products). When the crucible furnace is equipped with a voltage regulator or transformer, the working voltage shall be listed separately. Ordering and supply
9.1 The ordering and supply of crucible furnaces shall comply with the provisions of Chapter 9 of GB10067.1. 68
JB4311.1091
9.2 If the purchaser has the following special requirements, he may propose to the supplier a.
Different requirements for unit system, power supply voltage, power supply frequency, etc. (see Article 5.1.1.1 of GB10067.1); Different requirements for use environment (see Article 5.1.2 of GB10067.1); Additional requirements for safety and environmental protection (see Article 5.1.5.1 of GB10067.1); Special requirements for packaging (see Article 8.2.5 of GB10067.1); Different requirements for power supply (see Article 5.2.2 of GB10067.4); Different requirements for the type of temperature instrument, etc. (see Article 5.2.7.3 of GB10067.4); requiring the provision of openings for adding materials, sampling and observation (see Article 5.2.5); requiring the provision of over-temperature controllers or over-temperature fuses (see Article 5.2.6); different requirements for the heating time of an empty furnace (see Article 5.3.4); different requirements for the items specified by the supplier (see Article 5.4.1); requiring the provision of a digital display program temperature control instrument with a microprocessor (see Article 5.4.2 a); requiring the provision of a temperature recorder (see Article 5.4.2 b); 1
m: requiring a charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the demander. However, the special requirements that can actually be selected by the demander shall be determined by the supplier in accordance with their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supply and demand parties when ordering. Additional Notes:
This standard was proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun.4 and the following supplementary requirements. Measurement of surface temperature rise
The position of the measuring point is stipulated as follows:
The measuring point is at any point on the outer surface of the furnace shell, operating handle, etc., except for the furnace cover and upper cover plate, and 75mm from the edge of the heating element and thermocouple lead-out hole and the center of the furnace lining penetrating fastener, and 90mm from the edge of the non-metallic heating element lead-out hole and the observation hole. The measurement should be carried out with a surface thermometer with a measurement accuracy of not less than Class 5, and a glass thermometer shall not be used. Inspection rules and classification
The inspection and classification of crucible furnaces shall be carried out in accordance with Chapter 7 and the following provisions of GB10067.1. 7.1 The factory inspection items of crucible furnace are as follows: general inspection; safety inspection; inspection of working area size; inspection of furnace lining quality; inspection of manufacturing quality of heating elements; measurement of cold DC resistance of metal heating elements; inspection of short circuit of heating elements to furnace shell, measurement of insulation resistance (applicable to furnaces that are baked before leaving the factory); calibration of temperature instruments; cold inspection of the operation or action of the motion mechanism (i.e. furnace cover opening and closing mechanism or crucible lifting mechanism); inspection of interlocking alarm system; inspection of accessories, including inspection of model, specification and factory qualification certificate; scope of supply, including inspection of completeness of factory technical documents; packaging inspection.
7.2 The type inspection items of crucible furnace are as follows: a.
JB4311.10—91
All factory inspection items (under type test conditions); circuit test;
Measurement of empty furnace heating time;
Measurement of rated power;
Measurement of maximum working temperature;
Measurement of empty furnace loss;
Measurement of furnace temperature stability;
Measurement of surface temperature rise;
Inspection after hot test.
When required (see Article 9.2), a loading operation test should be carried out. 7.3 The technical classification of crucible furnaces is as specified in Table 6. Crucible furnaces of various technical levels should fully meet the requirements listed in the table and other provisions of this standard.
Crumb lifting platform
Temperature instrument
According to the requirements of Article 5.2.3
According to Article 5.2.5
According to the requirements of Article 5.2.7.3 of GB10067.4 and Article 5.2.6 of this standardAccording to the requirements of Articles 5.3.2 and 5.3.4
Can provide complete equipment according to the requirements of Article 5.4.1 Crucible furnace National grade superior products should meet the requirements of Class C above in terms of technology. Marking, packaging, transportation and storage
Can provide complete equipment according to the requirements of Articles 5.4.1 and 5.4.2
The marking, packaging, transportation and storage of crucible furnaces shall comply with the provisions of Chapter 8 of GB10067.1. The following items shall be marked on the nameplate of the furnace:
Product model and name;
Power supply voltage, V;
Power supply frequency, Hz;
Number of phases;
Rated power, kW,
Connection of heating elements (applicable to three-phase crucible furnace); Maximum working temperature, ℃;
Working area dimensions, mm
Weight, kg;
Product number:
Date of manufacture;
Name of manufacturer (country name shall be indicated for export products). When the crucible furnace is equipped with a voltage regulator or transformer, the working voltage shall be listed separately. Ordering and supply
9.1 The ordering and supply of crucible furnaces shall comply with the provisions of Chapter 9 of GB10067.1. 68
JB4311.1091
9.2 If the purchaser has the following special requirements, he may propose to the supplier a.
Different requirements for unit system, power supply voltage, power supply frequency, etc. (see Article 5.1.1.1 of GB10067.1); Different requirements for use environment (see Article 5.1.2 of GB10067.1); Additional requirements for safety and environmental protection (see Article 5.1.5.1 of GB10067.1); Special requirements for packaging (see Article 8.2.5 of GB10067.1); Different requirements for power supply (see Article 5.2.2 of GB10067.4); Different requirements for the type of temperature instrument, etc. (see Article 5.2.7.3 of GB10067.4); requiring the provision of openings for adding materials, sampling and observation (see Article 5.2.5); requiring the provision of over-temperature controllers or over-temperature fuses (see Article 5.2.6); different requirements for the heating time of an empty furnace (see Article 5.3.4); different requirements for the supply items specified by the supplier (see Article 5.4.1); requiring the provision of a digital display program temperature control instrument with a microprocessor (see Article 5.4.2 a); requiring the provision of a temperature recorder (see Article 5.4.2 b); 1
m: requiring a charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the demander. However, the special requirements that can actually be selected by the demander shall be determined by the supplier in accordance with their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supply and demand parties when ordering. Additional Notes:
This standard was proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun.4 and the following supplementary requirements. Measurement of surface temperature rise
The position of the measuring point is stipulated as follows:
The measuring point is at any point on the outer surface of the furnace shell, operating handle, etc., except for the furnace cover and upper cover plate, and 75mm from the edge of the heating element and thermocouple lead-out hole and the center of the furnace lining penetrating fastener, and 90mm from the edge of the non-metallic heating element lead-out hole and the observation hole. The measurement should be carried out with a surface thermometer with a measurement accuracy of not less than Class 5, and a glass thermometer shall not be used. Inspection rules and classification
The inspection and classification of crucible furnaces shall be carried out in accordance with Chapter 7 and the following provisions of GB10067.1. 7.1 The factory inspection items of crucible furnace are as follows: general inspection; safety inspection; inspection of working area size; inspection of furnace lining quality; inspection of manufacturing quality of heating elements; measurement of cold DC resistance of metal heating elements; inspection of short circuit of heating elements to furnace shell, measurement of insulation resistance (applicable to furnaces that are baked before leaving the factory); calibration of temperature instruments; cold inspection of the operation or action of the motion mechanism (i.e. furnace cover opening and closing mechanism or crucible lifting mechanism); inspection of interlocking alarm system; inspection of accessories, including inspection of model, specification and factory qualification certificate; scope of supply, including inspection of completeness of factory technical documents; packaging inspection.
7.2 The type inspection items of crucible furnace are as follows: a.
JB4311.10—91
All factory inspection items (under type test conditions); circuit test;
Measurement of empty furnace heating time;
Measurement of rated power;
Measurement of maximum working temperature;
Measurement of empty furnace loss;
Measurement of furnace temperature stability;
Measurement of surface temperature rise;
Inspection after hot test.
When required (see Article 9.2), a loading operation test should be carried out. 7.3 The technical classification of crucible furnaces is as specified in Table 6. Crucible furnaces of various technical levels should fully meet the requirements listed in the table and other provisions of this standard.
Crumb lifting platform
Temperature instrument
According to the requirements of Article 5.2.3
According to Article 5.2.5
According to the requirements of Article 5.2.7.3 of GB10067.4 and Article 5.2.6 of this standardAccording to the requirements of Articles 5.3.2 and 5.3.4
Can provide complete equipment according to the requirements of Article 5.4.1 Crucible furnace National grade superior products should meet the requirements of Class C above in terms of technology. Marking, packaging, transportation and storage
Can provide complete equipment according to the requirements of Articles 5.4.1 and 5.4.2
The marking, packaging, transportation and storage of crucible furnaces shall comply with the provisions of Chapter 8 of GB10067.1. The following items shall be marked on the nameplate of the furnace:
Product model and name;
Power supply voltage, V;
Power supply frequency, Hz;
Number of phases;
Rated power, kW,
Connection of heating elements (applicable to three-phase crucible furnace); Maximum working temperature, ℃;
Working area dimensions, mm
Weight, kg;
Product number:
Date of manufacture;
Name of manufacturer (country name shall be indicated for export products). When the crucible furnace is equipped with a voltage regulator or transformer, the working voltage shall be listed separately. Ordering and supply
9.1 The ordering and supply of crucible furnaces shall comply with the provisions of Chapter 9 of GB10067.1. 68
JB4311.1091
9.2 If the purchaser has the following special requirements, he may propose to the supplier a.
Different requirements for unit system, power supply voltage, power supply frequency, etc. (see Article 5.1.1.1 of GB10067.1); Different requirements for use environment (see Article 5.1.2 of GB10067.1); Additional requirements for safety and environmental protection (see Article 5.1.5.1 of GB10067.1); Special requirements for packaging (see Article 8.2.5 of GB10067.1); Different requirements for power supply (see Article 5.2.2 of GB10067.4); Different requirements for the type of temperature instrument, etc. (see Article 5.2.7.3 of GB10067.4); requiring the provision of openings for adding materials, sampling and observation (see Article 5.2.5); requiring the provision of over-temperature controllers or over-temperature fuses (see Article 5.2.6); different requirements for the heating time of an empty furnace (see Article 5.3.4); different requirements for the items specified by the supplier (see Article 5.4.1); requiring the provision of a digital display program temperature control instrument with a microprocessor (see Article 5.4.2 a); requiring the provision of a temperature recorder (see Article 5.4.2 b); 1
m: requiring a charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the demander. However, the special requirements that can actually be selected by the demander shall be determined by the supplier in accordance with their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supply and demand parties when ordering. Additional Notes:
This standard was proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun.2.5); different requirements for power supply (see GB10067.4 Article 5.2.2); different requirements for temperature instrument types, etc. (see GB10067.4 Article 5.2.7.3); requirements for openings for adding materials, sampling and observation (see Article 5.2.5); requirements for over-temperature controller or over-temperature fuse (see Article 5.2.6); different requirements for empty furnace heating time (see Article 5.3.4); different requirements for the supply items specified by the supplier (see Article 5.4.1); requirements for digital display program temperature control instrument with microprocessor (see Article 5.4.2 a); requirements for temperature recorder (see Article 5.4.2 b); 1
m: requirements for charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the buyer. However, the special requirements that can be selected by the purchaser shall be determined by the supplier according to their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supplier and the purchaser when ordering. Additional Notes:
This standard is proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun. 692.5); different requirements for power supply (see GB10067.4 Article 5.2.2); different requirements for temperature instrument types, etc. (see GB10067.4 Article 5.2.7.3); requirements for openings for adding materials, sampling and observation (see Article 5.2.5); requirements for over-temperature controller or over-temperature fuse (see Article 5.2.6); different requirements for empty furnace heating time (see Article 5.3.4); different requirements for the supply items specified by the supplier (see Article 5.4.1); requirements for digital display program temperature control instrument with microprocessor (see Article 5.4.2 a); requirements for temperature recorder (see Article 5.4.2 b); 1
m: requirements for charging operation test (see Article 7.2). The supplier should try its best to meet the special requirements of the buyer. However, the special requirements that can be selected by the purchaser shall be determined by the supplier according to their own conditions with reference to this standard. Some of them can be listed in the enterprise product standards, and the rest shall be agreed upon by the supplier and the purchaser when ordering. Additional Notes:
This standard is proposed and managed by the National Technical Committee for Standardization of Industrial Electric Heating Equipment. This standard was drafted by Xi'an Electric Furnace Research Institute and Shanghai Experimental Electric Furnace Factory. The main drafters of this standard are Ge Huashan, Zhang Wanchun and Kou Jun. 69
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