Some standard content:
UDC669.27:621.38.032
National Standard of the People's Republic of China
GB11247.2—89
Reduced to SJ/T11063-96
Tungsten heater
Tungstenheater element
1989-03-31Promulgated
State Bureau of Technical SupervisionPromulgated
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1990-01-01Implementation
National Standard of the People's Republic of China
Tungsten heater
Tungsten heater element
1 Subject content and scope of application
GB11247.2—89
This standard specifies the brand, use, type, specification and technical requirements, test methods, inspection rules and packaging, marking, storage, transportation and other details of tungsten heaters.
This standard applies to tungsten heaters for vacuum evaporation. 2 Brands, uses, and specifications
The brands and uses of tungsten heaters shall comply with the provisions of Table 1. Table 1
Heating elements for vacuum devices, aluminum evaporation, mirror evaporation, and plastic coating. For the types and specifications of commonly used tungsten heaters for heating elements for vacuum devices, aluminum evaporation, and plastic coating, see Appendix A. 3 Technical requirements
The chemical composition of tungsten heaters shall comply with the provisions of Article 2.1 of GB4181 "Tungsten Wire". 3.1
3.2 The service life of tungsten heaters: not less than 8 times/piece for vacuum devices, and not less than 10 times/piece for other uses. 3.3 The dimensions of tungsten heaters for belts shall comply with the requirements of Appendix A. The two legs of the tungsten heater shall be on the same plane and parallel. 3.4 Surface quality
The surface of the tungsten heater shall be bright, silvery white or silvery gray, without obvious burrs, cracks, and oxidation. 3.5 The supply and demand parties shall negotiate to resolve the special requirements for tungsten heaters. 4 Test methods
4.1 According to the requirements of Article 3.1, the chemical composition shall be analyzed according to Article 2.1 of GB4181. 4.2 According to the requirements of Article 3.2, the service life test method is shown in Appendix B. 4.3 According to the requirements of Article 3.3, the molding size shall be inspected by the naked eye, ruler or vernier caliper. .4.4 According to the requirements of Article 3.4, the surface quality shall be inspected by the naked eye. If there are doubts, it shall be inspected with a 5x magnifying glass. 5 Inspection rules
5.1 The product shall be inspected by the supplier's quality inspection department to ensure that the product complies with this standard and fill in the quality certificate. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on March 24, 1989, implemented on January 1, 1990, GB11247.2-89. 5.2 The buyer shall accept the product according to this standard within three months from the date of receipt. If the acceptance result does not conform to this standard, it is still unqualified after identification by both parties, and it is considered a defective product. 5.3 According to the requirements of Article 3.1, take a sample from each submitted batch for chemical composition analysis. If it is unqualified, double sampling shall be conducted. If it is still unqualified, it is considered a defective product. 5.4 Each submitted batch shall consist of tungsten heaters of the same brand, type and specification. 5.5 According to the requirements of Articles 3.2, 3.3 and 3.4, 50 pieces are randomly selected from every 500 to 1000 pieces for service life, size and surface quality inspection. If 5 pieces fail to meet the requirements, repeat the inspection. If there are still 5 pieces that fail to meet the requirements, they are considered unqualified products. 6 Marking, packaging, storage, transportation and quality certificate Tungsten heaters are packed in a box of 100 to 500 pieces or 1 to 2 kg. The packaging box should be strong, sealed, moisture-proof, and accompanied by a product certificate of conformity, which should indicate: product name and brand, production batch number, type and specification; quantity or weight, production date: inspector's stamp, standard number and manufacturer's name. 6.2 Each submitted batch should be accompanied by a quality certificate.
6.3 The outer packaging of tungsten heaters is a sturdy, moisture-proof carton or wooden box with a quality certificate attached. 6.4 After being packaged as required, tungsten heaters should be stored in a dry room (relative humidity not exceeding 65%) and free of acidic or alkaline atmosphere. 6.5 The outer packaging box of tungsten heaters should be marked with words such as "Do not throw" and "Prevent moisture". During transportation, they must be strictly protected from acidic and alkaline atmospheres and rain and snow erosion. 2
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A1 Type and specification dimension drawings and tables
A.1.1 Type A
NJA7-8×35×25×55
NJA6-10X30×32X45
RJA7-8×35×19×51
RJA8-8×40×25×65
GB112 47.2—89
Appendix A
Types and specifications of commonly used tungsten heaters (supplement)
Wire length
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Twisted wire specifications
1.0+0.43×3~8
1.0+0.43×3~8
NJB6-8X42X32
RJB6-8X54X 27
RJB5-10X40X33
NJC8-8X40X×98
RJC6-8×30×84
GB11247.2—89
Coil length
Number of turns
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Twisted wire specifications
1.0+0.43×3~8
1.0+0.43×3~8
Twisted wire specifications
1.0+0.43×3~8
A1.6D2 type
NJV-143
NJDi-127
GB11247.2—89
Coil length
Upper inner diameter
Coil length
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Lead wire length
Twisted wire specifications
0.61×3~8
Twisted wire specifications
0.55×3~8
NJD--143
NJE-216
GB11247.2-89
Coil length
Coil lengthwwW.bzxz.Net
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0.61×3~8
Twisted wire specifications
0.762×3~8
A2 specification example
NJM-103
NJA7-8×35×25×55
NJV-143
GB11247.2—89
Heating subtype
Twisted wire type| |tt||Heater type
-Twisted wire type
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Twisted wire specifications
GB11247.2—89
Tungsten heater service life test conditions
(reference)
Tungsten heater service life test conditions for electric vacuum devices for aluminum evaporation B1.1 Experimental equipment
Japan Daia Vacuum Technology Research Co., Ltd. Manufactured by the company, No. 379493B1.2 Test conditions
Vacuum degree: 1.33×10-2Pa;
Current: 60~100A,
Voltage: preheating 3.5~5.0V, evaporation 5.5~8.0V, evaporation time, preheating 18~21s, evaporation 16~25s, aluminum insertion amount: 100~120mg,
Aluminum wire purity: 99.99%.
B2 Test conditions one of the life of tungsten heaters used for aluminum evaporation in mirror making B2.1 Test equipment
DMW-1350 rotary vacuum coating machine
B2.2 Test conditions
Vacuum degree: 1.33×10-2Pa
Current: 90A,
Voltage: 8V,
Evaporation time: 1~1.5mimy
Aluminum insertion amount: 0.4~0.7g
Aluminum wire purity: 99.45%~99.99%.
Life test conditions of tungsten heater for aluminum evaporation in mirror making B3
B3.1 Test equipment
DM-670F vacuum coating machine
B3.2 Test conditions
Vacuum degree: ≥6.65×10-2Pa,
Evaporation voltage: 120~170V,
Evaporation current: 0.6~0.9kA,
Evaporation time: 1min;
Aluminum insertion amount: 0.3~0.4g;
Aluminum wire purity: 99.99%.
Additional Notes:
This standard was drafted by Factory 745.
The main drafters of this standard are Lin Ling and Zhong Huaimo. 8
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