JB/T 9860.1-1999 This standard is a revision of ZB J94 006-88 "Technical Conditions for Tungsten Contacts for Breakers". During the revision, only editorial changes were made according to relevant regulations, and the main content remained unchanged. This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of tungsten contacts for magneto breakers and lamp-type tungsten contacts. This standard is applicable to the quality spot check, supervision inspection, new product identification and entrusted inspection of lamp-type tungsten contacts for magneto breakers (other types of tungsten contacts are also implemented as a reference). This standard was first issued in 1988. JB/T 9860.1-1999 Technical Conditions for Tungsten Contacts for Breakers JB/T9860.1-1999 Standard download decompression password: www.bzxz.net

ICS27.020
Machinery Industry Standard of the People's Republic of China
JB/T9860.1-1999
Technical specifications for tungsten contact ofbreaker
Published on 1999-08-06
National Machinery Industry Bureau
2001-01-01 Implementation
JB9860.1-1999
This standard is a revision of JB7R10688 (Technical conditions for contacts for power interrupters). When it was revised, the original standard was revised, and the main technical content remained unchanged. This standard is effective from July 7, 2006-88. This standard was proposed by Tianjin Internal Combustion Engine Research Institute and is under the jurisdiction of Tianjin Internal Combustion Engine Research Institute. The main drafters of this standard are Ma Du, Niu Jia, and Shen Qixing. This standard was first issued in 1988.
Machinery Industry Standard of the People's Republic of China
Technical conditions for tungsten contacts for circuit breakers
Technical specificatinus far lungglencontacl ot hreaker
IB/T9860.1—1999
ZBJ9400688
This standard specifies the technical requirements, test methods, inspection rules and markings for the products of tungsten contacts for magnetic motor circuit breakers: packaging, transportation and storage:
This standard applies to the quality inspection of tungsten contacts for magnetic motor circuit breakers (other types of tungsten contacts are also referred to): supervision inspection, product identification and entrusted inspection.
2 Referenced standards
The clauses included in the underlined standards and the clauses that constitute technical standards by reference in the relevant standards. When this standard is published, all versions are valid, and all standards will be revised. Parties using different standards should discuss the possible reduction of the following standards by using the latest version. GA/T230—199!
GD/T 2B281987
GD/T 4197—1984
GB,T4324.[-4324.30—[984
GB:I 4340—1984
JBr[ 9860.2—1999
JE/T9864.2—199
3 Technical requirements
Method for testing the hardness of gold
Batch-by-batch inspection and continuous counting and drawing procedures and polishing tables (applicable to continuous batch inspection) Sintered bars of pigeons, pins and their alloys, testing methods for grain size of materials, chemical analysis methods
Method for testing the hardness of gold Vickers
Technical conditions for tungsten rods for circuit breakers
Clock breakers for motors, test methods
5.1 The components of the contacts shall comply with the requirements of this standard and shall be manufactured in accordance with the product drawings and technical documents approved by the prescribed procedures. 3. The tungsten sheet, the warehouse and the solder shall be directly manufactured under the protection of hydrogen and nitrogen gas. 3.3 The raw materials of tungsten sheets must be products that have passed the inspection of Section 9860.2, and their main technical content shall meet the requirements of Table 1. Table 1
Chemical base
75UI-251I
3.4 ​​The base nail material is low-carbon pin with a carbon content of about 0.15% to 0.20%. Other materials with similar skin content and performance suitable for wedging can be used.
3.5 The purity of the welding material is not less than 9.9%. Approved by China National Machinery Industry Bureau on August 16, 1999
2 (implemented on January 1, 2000
JHT98601-HM
3.6 The welding strength of the short-circuit of the tungsten contact shall not exceed 7%.45MPa3.7 Dimensions and appearance
3.7.1 The size of the contact shall be in accordance with the specifications provided by the manufacturer, or the size and size requirements agreed upon by the manufacturer and the user.
3.7.2 The surface of the tungsten contact shall be smooth, free of defects, scratches, rust, hollow and film welding phenomena; the electrical layer shall not be peeled, disconnected or leaked
3.3 The weld shall be uniform and there shall be no obvious "flow" phenomenon. The thickness of the weld shall not be greater than one-fourth of the thickness of the sheet. 3.7.4 The contact of the tungsten contact shall be smooth and free of defects, scratches, rust, hollow and film welding phenomena; the electrical layer shall not be peeled, disconnected or leaked
3.4 ​​The weld shall be uniform and there shall be no obvious "flow" phenomenon. The thickness of the weld shall not be greater than one-fourth of the thickness of the sheet. The maximum allowable roughness R is 0.4mm, and the contact surface shall not have any indentation or processing defects.
4 Test method
4.1 Chemical purity analysis of tungsten sheet can be replaced by the analysis result of the rod used to make the batch of sheets sold. The method shall be carried out in accordance with the provisions of GB/T4324.1-4324.30.
4.2 Thickness determination method shall be carried out in accordance with the provisions of GB/T230: If a Vickers gram meter is used for visual measurement, a load of 4.904N shall be used in accordance with the method specified in GB/T4340. The measured value shall be converted by comparison to meet the requirements of HRA. 4.3 The method for determining the number of grains on the cross section shall be carried out in accordance with the provisions of GB. 4.4 The determination of braid strength shall be carried out in accordance with 5.14 of JB/5864.2-19. 4.5 According to 3.7.1, 4.6 According to the requirements of 3.7.2 and 3.7.3, the appearance and thickness of the tungsten contacts shall be checked by measuring or magnifying glass. 4.7 According to the requirements of 3.7.4, the roughness of the contact surface of the potential contact shall be checked by roughness sample block or roughness test. 5 Inspection rules
5. The product must be inspected by the quality inspection department of the manufacturer to ensure that the product meets the standard requirements and fill in the quality certificate. 5.2 The received products can be inspected. If the inspection station does not meet the specifications and technical indicators marked on the mark, the manufacturer shall submit a request within three months from the receipt of the product and conduct a joint appraisal. If it still does not meet the requirements, it is unqualified. 5.3 Sampling of each batch shall be carried out as follows:
For the chemical purity of tungsten 5.5 The thickness, size, contact surface and appearance quality of tungsten contacts shall be inspected according to B/2828 standard. The specific age shall be agreed upon by the manufacturer and the user. Standardization, packaging, transportation and storage 1. Tungsten contacts are packaged in plastic and then wrapped in metal or plastic trays. Tungsten contacts of the same type, specification and number shall be placed in a packaging box called a packaging box.
6.1 Each batch of tungsten contacts should be accompanied by a mark indicating: 2
company) type, mark and standard of contact; b) production batch guide:
d) quality: www.bzxz.net
e) date of production:
printed by the manufacturing and inspection departments,
JB/T 9860.1-1990
6.3 The contacts should be placed in a small box with positive current paper and reinforced during transportation: the box should be marked with words or symbols such as "do not drop" and "get wet";
6.4 The contacts should not be dropped violently during transportation to prevent acid from spreading and rain. 6.5 Tungsten contacts should not be placed in a room with no corrosive gases such as acids and mechanical agents.
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