GB/Z 5169.15-2001 Fire hazard test for electrical and electronic products Test methods 500W nominal test flame and guidance
Some standard content:
ICS 29.020
National Standardization Guidance Technical Documents of the People's Republic of China GB/z5169.15—2001
idtIEC/TR260695-2-4/2:1994
Fire hazard testing for electric and electronic productsTest methods-
500Wnominal testflame and guidelines guidance2001-07-12 issued
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2001-12-01 implementation
GB/Z5169.15—2001
EC Foreword
IEC Introduction
1 Scope
2 References
3 Definitions
Method A
Method B
Recommended apparatus for using test flame
II-iR.+AIAA+IR+
Classification and nomenclature
Appendix A (suggestive appendix)||tt ||Test method A device
Appendix B (suggestive appendix)
Test method B device
Appendix C (suggestive appendix) Examples of test devices for instrumental tests Appendix D (suggestive appendix)
Examples of test devices for testing strip and plate materials 10
GB/Z5169.15—2001
The guiding technical document is equivalent to the International Electrotechnical Commission IEC/IR260695-2-4/2:1994 (Technical Report (Form 2)) "Fire hazard testing for electrical and electronic products Part 2 Test methods Part 4/Chapter 2: 500W nominal test flame and guidance". The national standard CB/T5169.71985 "Bunsen burner flame test method for fire hazard test of electrical and electronic products" was formulated with reference to the IECSC50D(sec)35 document (January 1983). With the development of science and technology and after years of practice, IFC has developed and improved its content and officially published it as two international standards IEC60695-2-4/0:1991, IEC60695-2-4/1:1991 and a technical report (Form 2): IEC/TR260695-2-4/2:1994. In order to ensure the integrity of the content of this standard, this guiding technical document GI3/Z5169.15-2001* Fire hazard test for electric and electronic products - Test method - 500 W nominal test flame and guidance (idt1EC/TR2 606952-4/2:1994) is formulated to form a series of standards with the following standards to replace GB/T5169.71985: GB/T 5169.7--2001 Fire hazard test for electric and electronic products - Test method - Expanded and premixed flame test method (idtIEC60695-2-4/0:1991)
GB/T5169.14-2001 Fire hazard test for electric and electronic products - Test method - 1 kW nominal premixed test flame and guidance (idtIEC60695-2-4/1:1991) Appendices A, B, C and D of this guiding technical document are all appendices. This guidance technical document is proposed by the State Machinery Industry Bureau. This guidance technical document is under the jurisdiction of the National Technical Committee for Standardization of Environmental Conditions and Environmental Tests for Electrical and Electronic Products. The drafting unit of this guidance technical document: Guangzhou Electric Science Research Institute. The main drafters of this guidance technical document: Zhang Chi, Liu Fuzhan. This guidance technical document is entrusted to the National Technical Committee for Standardization of Environmental Conditions and Environmental Tests for Electrical and Electronic Products for interpretation. GB/Z5169.15—2001
IEC Foreword
1) IEC (International Electrotechnical Commission) is a world standardization organization composed of national electrotechnical committees (IEC National Committees). The mission of IEC is to promote international cooperation on various standardization issues in the field of electrical and electronic products. To this end, in addition to organizing other activities, IEC also publishes various international standards and entrusts the formulation of IEC international standards to technical committees. Any IEC National Committee interested in the subject under discussion may participate in the standard-setting work. National organizations, governmental organizations and non-governmental organizations that have established relations with the IEC may also participate in this work. The IFC cooperates closely with the International Organization for Standardization (ISO) under the conditions stipulated in the agreement it has reached with it. 2) The formal resolutions and agreements of the International Electrotechnical Commission (IEC) on technical issues are formulated by technical committees represented by representatives of national committees that are particularly interested in the issue, and express the international consensus on the issue as accurately as possible. 3) These resolutions or agreements are used internationally in the form of recommended standards and are accepted by national committees in this sense. 4) In order to promote international unification, the IEC hopes that national committees will adopt the contents of EC standards as their national standards within the scope permitted by their domestic conditions. Any inconsistencies between IEC standards and corresponding national standards should be pointed out in the national standards as much as possible. IFC60695-2-4/2 is a technical report (Form 2) prepared by IFCTC89: Fire Hazard Testing Technical Committee. The text of this technical report is based on the following documents: Committee Draft
89 (Secretariat)51
Full information on this technical report can be found in the voting report in the table above. Voting Report
89 (Secretariat) 71
This document will be used as a "temporary advance standard" in the field of fire hazard testing, and is published in the form of a series of technical reports (Form 2) (according to ISO/IEC Guidance Document Part 1 G, 4.2. 2) - because this is a follow-up task to guide how to apply standards in this field to meet various needs,
This document is not an "international standard". It is recommended to use it temporarily to collect information and experience in actual use. Comments on the content of this document may be sent to the IFC Central Office.
This technical report (Form 2) should be reviewed within three years of publication and a decision will be made: to extend for three years, to revise it into an international standard, or to abolish it.
This technical report is used together with IEC 60695-1-1 and IEC60695-4. Appendix A, Appendix B, Appendix C, and Appendix D are suggested appendices. GB/7. 5169. 15—2001
IEC 60695-2-4/0 gives:
IEC
a) Guide for the use and design of flame test methods for assessing the effects of flames caused by other ignition sources in the vicinity of the sample or flames in the early stages of ignition on the test sample;
b) General description of the instruments required to produce the test flame;) General description of the calibration procedures to verify that the flame meets the requirements. Detailed descriptions of the instruments required to produce and calibrate the test flame are given in the corresponding standards of this series of standards, of which this standard is the following table summarizes the current research status of this series of standards: Nominal energy of the flame
500(A)
500(B)
500（C)
Premixed
Top mix
Premixed
Premixed
Premixed
Premixed
Methane/propane
Current status
IEC 60695-2-4/1
Method A
Method B
Under consideration
Under consideration
Nominal height designation
The purpose of this work, initiated by the Safety Advisory Committee, was to develop a set of (a minimum) practicable and applicable standard test flames covering the energy range of all committee test flames required. Wherever possible, these test flames have been based on existing types, but the H test specification has changed. Two methods of generating a 500W test flame (A and B) have been developed and are described in this document. A third method, which is being evaluated by the working group, uses more non-adjustable hardware equipment than that used in Method 13. If feasible, the third method will be published as an appendix to the document to allow for extensive evaluation and comparison. The flames of the three test methods are described as follows: Method A flame. Methane is used as the fuel. A strictly specified burner model has been used in some countries for many years; Method B flame melt, using ether as the fuel, using the hardware equipment specified in IEC60695-2-4/1; Method C flame,It is being discussed in the working group that the flame will use a further improved burner used in method A and can use either ethane or propane as fuel. National Standardization Guiding Technical Document of the People's Republic of China Fire hazard testing for electric and electronic products
Test method
500 W nominal test flame and guidance
Fire hazard testing for electric and electronic products-Tesl melhods
500 w nominal test flame and guidance1 Scope
GB/Z5169.15—2001
idt IFC/TR2 60695-2-4/2: 1994 replaces CB/T 5169. 7—1985
This guiding technical document gives the specific requirements for producing a 1i00 W nominal premixed test flame with a total flame height of approximately 123 mm.
This guiding technical document gives two methods (A and B): Method A flame uses methane as fuel; Method B flame uses propane as fuel.
2 Reference standards
The provisions contained in the following standards constitute the provisions of this guiding technical document through reference in this guiding technical document. When this guiding technical document is published, the versions shown are valid. All standards will be revised. All parties using this guiding technical document should explore the possibility of using the latest versions of the following standards. GI3/T5169.1—1996 Terminology of fire hazard testing for electric and electronic products (idtIEC60695-4:1993) GB/T5169.2—1985 Fire hazard testing for electric and electronic products - Guidelines for the establishment of technical requirements and test specifications for fire hazard assessment (idtIEC60695-1-1:1983) GB/T 5169. 3—1985 Fire hazard testing for electric and electronic products - Guidelines for the establishment of technical requirements and test specifications for fire hazard assessment of electronic optical components (ivIEC60695-1-2:1982) GB/T 5169.7—2001 Fire hazard testing for electric and electronic products - Test methods - Dispersed and premixed flame test methods (idtIEC 60695-2-4/0:1991)
GB/T5169.142001 Fire hazard test for electrical and electronic products Test method 1kW nominal premixed test flame and guidance (idtIEC60695 24/1,1991)
IEC60693【31986 Fire hazard test Part: Guidelines for the development of technical requirements and test specifications for fire hazard assessment of electrical and electronic products Preselection procedures Guidelines for use IS0 1337:1980#
Wrought copper (minimum copper content 99.85%) Chemical composition and form of wrought products 3 Definitions
This guidance technical document adopts the following definitions: 500W standard test flame standardized500Wrestflamc complies with this guidance technical document and meets all the requirements of Chapter 4 "Method A" or Chapter 5 "Method 13\. Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on July 12, 2001 and implemented on December 1, 2001
4 Method A
4.1 Requirements
GB/2. 5169. 15—2001
According to this method, the standard 500W nominal test flame is produced by the following method: Using the apparatus of Figure A1 and Figure A2 (see Appendix A) Using the apparatus of Figure A2, supply methane gas with a purity of not less than 99% at a flow rate of 965mL/min130tml./min under 23C.0.1MPa, and make the back pressure reach 125mm±51waterbar. The flame should be symmetrical and stable, and the result of 54s+2s of the verification test described in 4.4 can be obtained. Using the verification test apparatus shown in Figure A3
In the soft light of the tree with a black background, the blue flame height of the flame measured by the ruler shown in Figure 2 should be 40m1m±2 m. Under soft light with a black background, the total height of the flame measured with the ruler shown in Figure 2 should be approximately 125 mm. 4.2 Apparatus and Fuel
4.2.1 Burner
The burner should be manufactured as shown in Figure A1.
Note: For ease of cleaning, the combustion tube, combustible gas nozzle and needle valve should be sufficiently removable. When reinstalling, care should be taken to avoid damage to the reading tip and to ensure that the needle valve and valve seat (combustible gas nozzle) are properly connected. 4.2.2 Flow Meter
The flow meter should be suitable for measuring a gas flow of 965 ml./min at 23'℃ and 0.1 MPa and should be accurate to ±2%. 4.2.3 Pressure Gauge
The pressure gauge should be suitable for measuring the range of (0~7.5) kPa. A water pressure gauge can also be used, but the reading range should be suitable for (0-~7.5) kPa. 4.2.4 Control valve
The control valve is used to limit the gas flow,
4.2.5 Copper block
When the whole machine is completed but the holes are not drilled, the copper block has a diameter of 9 mm and a mass of 10.00 g + 0.05 g (see Figure 1) 4.2.6 Thermocouple
The thermocouple is a sheathed armored (K-type) fine wire (NiCr/NiAl) with an expanded sheath diameter of 0.5 mm, suitable for long-term operation at temperatures above 1050 C.
The preferred method of fixing the thermocouple to the copper block is to squeeze the copper block around the thermocouple (see Figure A3). 4.2.7 The temperature time display/recording and timing device shall be suitable for measuring the time for heating the block from 100°C ± 2°C to 700°C ± 3°C and the measurement error shall be ± 0.5S. 4.2.8 There shall be an instrument for measuring the ambient atmospheric temperature and pressure. 4.2.9 The fuel gas shall be methane with a purity of not less than 99%. 4.3 Generation of test flame
Use the burner gas supply device shown in Figure A2. Care shall be taken to ensure that there are no gaps during operation. Ignite the gas. Adjust the gas flow and back pressure to the specified values. Adjust the air inlet until the height of the green flame core is 40 mm ± 2 mm measured by the ruler shown in Figure 2 under soft light with a black background. Secure the air inlet with the locking nut. The flame shall remain stable and symmetrical during the test. 4.4 Verification of the test flame
4.4.1 Principle
When using the fire test device specified in Figure A3, the time required for the temperature of the copper block shown in Figure 1 to rise from 100°C to 700°C should be 51 s±2 s.
It can be corrected according to the actual measured value of the use conditions. 2
4.4.2 Procedure
GB/Z 5169.15—2001
.-In a non-ventilated environment, install the device according to Figure A3 to ensure that there is no gas leakage at the connection point. When initially adjusting the gas flow, gas back pressure and air flow, temporarily move the burner away from the copper block to prevent the flame from shadowing the copper block. Ignite the gas and adjust the gas flow and back pressure to the specified conditions. Adjust the air inlet and fix the air inlet with the locking nut when the blue flame core height of the flame is 40mm±2mm measured under soft light with a black background using the gauge shown in Figure 2. Ensure that the total flame width is approximately 125 μm and is uniform, measured with a ruler as shown in Figure 2, under subdued light against a black background.
Wait for at least 5 min to allow the burner conditions to stabilize. Check that the gas flow and back pressure as well as the height of the blue flame core are within the limits. - Put the temperature/time display/recording device in operation and reposition the burner under the copper block. - Make three measurements to determine the time for the copper block temperature to rise from 100°C ± 2°C to 700°C ± 3°C, allowing the copper block to cool naturally in air to below 50°C after each measurement. - If the copper block has never been used, an initial run-in treatment should be performed on the copper block surface and the result should be ignored. - Calculate the average time in seconds as the result. 4.4.3 If the result is within the range of 548 ± 2 s, the flame is confirmed and can be used for testing. 5 Method B
5.1 Requirements
According to this method, the nominal test flame of 500W is produced by the following method: ---Use the apparatus of Figures B1 to B5 (see Appendix B); supply alkane gas with a purity of at least 98% at a flow rate of 360mL/min±15mL/min at 23℃ and 0.1MPa*, and supply air at a flow rate of 6.0ml./min±0.3ml./min at 23℃ and 0.1MPa*. The flame should be symmetrical and stable and can obtain 5.4. The results of the calibration test described in Figure B are obtained at 54 5 + 2 s. The calibration test apparatus shown in Figure B is used. Under soft light with a black background, the flame size measured with the ruler shown in Figure 2 should be approximately: Blue flame core height: 35 mm 45 mm
Total height: 115 m ~ 135 mr
5.2 Apparatus and fuel
5.2.1 Burner
The burner should be manufactured as shown in Figures B1 to B5. Note: To facilitate cleaning of the combustion back, the combustible gas nozzle and the fire baking stabilizer should be removable. 5.2.2 Flow meter
The flow meter should be suitable for:
measuring the gas flow rate of 360 mL/min at 23°C and 0.1 MPa with an accuracy of ±2%; measuring the gas flow rate of 6.0 mL/min at 23°C and 0.1 MPa with an accuracy of ±2%. 5.2.3 Pressure gauge
Two pressure gauges are required, suitable for measuring the range of (0～7.5) kPa. Water pressure gauges can also be used, but the reading range should be suitable for (0～7.5) kPa.
5.2.4 Control valve
Two control valves are required to limit the gas and air flow within the specified tolerance. 5.2.5 Copper block
*The actual measured value can be corrected according to the use conditions. 3
GB/Z 5169.15—2001
When the entire machining is completed but the hole is not drilled, the copper block has a diameter of 9mm and a mass of 10.00g±0.05g (see Figure 1). 5.2.6 Thermocouple
Thermocouple is a sheathed armored (K type) fine wire (NiCr/NiAl). The sheath diameter is 0.5mm, suitable for long-term operation under temperatures above 150C.
The preferred method of fixing the thermocouple to the copper block is to squeeze the copper block around the thermocouple (see Figure R7). 5.2.7 The temperature time display/recording and timing cover shall be suitable for measuring the time for the copper block to be heated from 100℃+2℃ to 700℃±3℃ with an accuracy of -0.5s. 5.2.8 Instruments shall be provided for measuring the ambient air temperature and pressure. 5.2.9 The fuel gas shall be propane with a purity of not less than 98%. 5.2.10 The air shall be substantially free of oil and water
5.3 Generation of the test flame
Use the burner/gas supply shown in Figure B6. Care shall be taken to ensure gap-free connections during operation. Ignite the gas and adjust the gas and air flow rates to the specified values. The flame shall remain stable and symmetrical during the test. 5.4 Verification of the test flame
5.4.1 Principle
When using the flame verification test device specified in Figure B7, the time required for the temperature of the copper block shown in Figure 1 to rise from 100°C to 700°C shall be 54 s ± 2 s.
5.4.2 Procedure
-In a non-ventilated environment, install the device according to Figure B7, ensuring that there is no gas and air leakage at the connection. --When initially adjusting the gas and air flow rates, temporarily move the burner away from the copper block to prevent the flame from affecting the copper block. -Ignite the gas and adjust the gas and air flow rates to the specified values, ensuring that the blue core height and the total height of the flame measured by the ruler shown in Figure 2 under soft light against a black background are within the specified range and are symmetrical. Wait at least 5 minutes for the burner conditions to stabilize. Check whether the gas and air flow rates are within the specified values. -With the temperature/time display/recording device in operation, adjust the burner position under the copper block. ~ Three measurements should be made to determine the time for the block temperature to rise from 100℃ + 2℃ to 700℃ + 3℃: between two measurements, the copper block should be cooled naturally in air to below 50℃. If the copper block has never been used, the surface of the copper block should be subjected to initial operation treatment. Regardless of the results, the average time in seconds is calculated as the result. 5.4.3 If the result is within the range of 54s-2s, the flame is confirmed and can be used for testing. 6 Recommended equipment for using test flames
The principles for selecting suitable test equipment are given in GB/T 51G9.7. Unless otherwise specified in the relevant specifications, when using the test equipment, it is recommended that the distance from the top of the combustion tube to the sample surface test point is 55 mm, and the combustion tube should be in a fixed position. Examples of test equipment are given in Appendix C.
Note: The choice of a distance of 55mm has better reproducibility than the contact between the tip of the flame blue core and the test sample. When testing strip samples, the operator should be able to move the flame as the sample twists and burns during the test, and the center of the flame should just not touch the sample. An example of a test device is given in Appendix D. The burner should be tilted so that the slag falling from the test sample during the test does not fall into the burner. 7 Classification and naming
The device for producing 500W nominal test flame in accordance with the requirements of this guiding technical document can be named as: 4
GB/Z 5169.15-2001
"500W nominal test flame device, in accordance with GB/Z 5169.15." 20009
+ 0.6 Depth 6.00± 0.02
+9.00 ±0.01
Material: Electrolytic copper
Copper block partially polished
ISO1337: CuETP
Weight: 10.00±0.05 before drilling
Dimensions are in mm, unless otherwise specified, with a tolerance of =0.1 Figure 1 Parts of a hard-mix burner
1.0mm~1.5mm steel plate
The heat shrink strip is fixed in place with rivets
Dimensions are in mm. Unless otherwise specified, the tolerance is ±0.1 mm Figure 2 Height assessment gauge
$0.9±0.1
Drilling and tapping
GB/Z. 5169. 15—2001
Appendix A
(Suggested Appendix)
Test method A Device
Butterfly and sensitive butterfly,
Match with the main body
Thread and main body
Open 3 equal parts on the tube wall
Figure A1 Assembly drawing and parts drawing
Combustion tube
#9.5±0.3
The minimum
area of air inlet is 225mm
Adjustable anti-loosening pin
GB/Z 5169. 15
Combustion tube
Suitable sealing material
Needle valve nut
Figure Al (end)1 Principle
When the flame calibration test device specified in Figure B7 is used, the time required for the temperature of the copper block shown in Figure 1 to rise from 100°C to 700°C should be 54 s ± 2 s.
5.4.2 Procedure
-In a non-ventilated environment, install the device according to Figure B7 to ensure that there is no gas and air leakage at the connection. --When initially adjusting the gas and air flow rates, temporarily move the burner away from the copper block to prevent the flame from affecting the copper block. -Ignite the gas and adjust the gas and air flow rates to the specified values to ensure that the blue core height and the total height of the flame measured by the ruler shown in Figure 2 under soft light against a black background are within the specified range and are symmetrical. Wait at least 5 minutes for the burner conditions to stabilize. Check whether the gas and air flow rates are within the specified values. -With the temperature/time display/recording device in operation, adjust the burner position under the copper block. ~ Three measurements should be made to determine the time for the block temperature to rise from 100℃ + 2℃ to 700℃ + 3℃: between two measurements, the copper block should be cooled naturally in air to below 50℃. If the copper block has never been used, the surface of the copper block should be subjected to initial operation treatment. Regardless of the results, the average time in seconds is calculated as the result. 5.4.3 If the result is within the range of 54s-2s, the flame is confirmed and can be used for testing. 6 Recommended equipment for using test flames
The principles for selecting suitable test equipment are given in GB/T 51G9.7. Unless otherwise specified in the relevant specifications, when using the test equipment, it is recommended that the distance from the top of the combustion tube to the sample surface test point is 55 mm, and the combustion tube should be in a fixed position. Examples of test equipment are given in Appendix C.
Note: The choice of a distance of 55mm has better reproducibility than the contact between the tip of the flame blue core and the test sample. When testing strip samples, the operator should be able to move the flame as the sample twists and burns during the test, and the center of the flame should just not touch the sample. An example of a test device is given in Appendix D. The burner should be tilted so that the slag falling from the test sample during the test does not fall into the burner. 7 Classification and naming
The device for producing 500W nominal test flame in accordance with the requirements of this guiding technical document can be named as: 4
GB/Z 5169.15-2001
"500W nominal test flame device, in accordance with GB/Z 5169.15." 20009
+ 0.6 Depth 6.00± 0.02
+9.00 ±0.01
Material: Electrolytic copper
Copper block partially polished
ISO1337: CuETP
Weight: 10.00±0.05 before drilling
Dimensions are in mm, unless otherwise specified, with a tolerance of =0.1 Figure 1 Parts of a hard-mix burner
1.0mm~1.5mm steel plate
The heat shrink strip is fixed in place with rivets
Dimensions are in mm. Unless otherwise specified, the tolerance is ±0.1 mm Figure 2 Height assessment gauge
$0.9±0.1
Drilling and tapping
GB/Z. 5169. 15—2001
Appendix A
(Suggested Appendix)
Test method A Device
Butterfly and sensitive butterfly,
Match with the main body
Thread and main body
Open 3 equal parts on the tube wall
Figure A1 Assembly drawing and parts drawing
Combustion tube
#9.5±0.3
The minimum
area of air inlet is 225mm
Adjustable anti-loosening pin
GB/Z 5169. 15Www.bzxZ.net
Combustion tube
Suitable sealing material
Needle valve nut
Figure Al (end)1 Principle
When the flame calibration test device specified in Figure B7 is used, the time required for the temperature of the copper block shown in Figure 1 to rise from 100°C to 700°C should be 54 s ± 2 s.
5.4.2 Procedure
-In a non-ventilated environment, install the device according to Figure B7 to ensure that there is no gas and air leakage at the connection. --When initially adjusting the gas and air flow rates, temporarily move the burner away from the copper block to prevent the flame from affecting the copper block. -Ignite the gas and adjust the gas and air flow rates to the specified values to ensure that the blue core height and the total height of the flame measured by the ruler shown in Figure 2 under soft light against a black background are within the specified range and are symmetrical. Wait at least 5 minutes for the burner conditions to stabilize. Check whether the gas and air flow rates are within the specified values. -With the temperature/time display/recording device in operation, adjust the burner position under the copper block. ~ Three measurements should be made to determine the time for the block temperature to rise from 100℃ + 2℃ to 700℃ + 3℃: between two measurements, the copper block should be cooled naturally in air to below 50℃. If the copper block has never been used, the surface of the copper block should be subjected to initial operation treatment. Regardless of the results, the average time in seconds is calculated as the result. 5.4.3 If the result is within the range of 54s-2s, the flame is confirmed and can be used for testing. 6 Recommended equipment for using test flames
The principles for selecting suitable test equipment are given in GB/T 51G9.7. Unless otherwise specified in the relevant specifications, when using the test equipment, it is recommended that the distance from the top of the combustion tube to the sample surface test point is 55 mm, and the combustion tube should be in a fixed position. Examples of test equipment are given in Appendix C.
Note: The choice of a distance of 55mm has better reproducibility than the contact between the tip of the flame blue core and the test sample. When testing strip samples, the operator should be able to move the flame as the sample twists and burns during the test, and the center of the flame should just not touch the sample. An example of a test device is given in Appendix D. The burner should be tilted so that the slag falling from the test sample during the test does not fall into the burner. 7 Classification and naming
The device for producing 500W nominal test flame in accordance with the requirements of this guiding technical document can be named as: 4
GB/Z 5169.15-2001
"500W nominal test flame device, in accordance with GB/Z 5169.15." 20009
+ 0.6 Depth 6.00± 0.02
+9.00 ±0.01
Material: Electrolytic copper
Copper block partially polished
ISO1337: CuETP
Weight: 10.00±0.05 before drilling
Dimensions are in mm, unless otherwise specified, with a tolerance of =0.1 Figure 1 Parts of a hard-mix burner
1.0mm~1.5mm steel plate
The heat shrink strip is fixed in place with rivets
Dimensions are in mm. Unless otherwise specified, the tolerance is ±0.1 mm Figure 2 Height assessment gauge
$0.9±0.1
Drilling and tapping
GB/Z. 5169. 15—2001
Appendix A
(Suggested Appendix)
Test method A Device
Butterfly and sensitive butterfly,
Match with the main body
Thread and main body
Open 3 equal parts on the tube wall
Figure A1 Assembly drawing and parts drawing
Combustion tube
#9.5±0.3
The minimum
area of air inlet is 225mm
Adjustable anti-loosening pin
GB/Z 5169. 15
Combustion tube
Suitable sealing material
Needle valve nut
Figure Al (end)
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