This standard specifies the materials, equipment, process and quality inspection for ion nitriding parts. This standard is applicable to ion nitriding treatment of steel parts. Ion nitriding treatment of titanium alloys and iron-based powder metallurgy materials should also be used as a reference. JB/T 6956-1993 Ion nitriding JB/T6956-1993 Standard download decompression password: www.bzxz.net

For example: the entire block has 8 electrodes, and the distance between the welding spots is 25mm, which can be represented by Figure 6. +++++wwW.bzxz.Net
JB/T9531
G8×25
Standard of the Machinery Industry of the People's Republic of China
Spot welding electrode back-ups and clamps
Spot welding-electrode back-ups and clamps This standard specifies the dimensions and specifications of spot welding electrode back-ups and clamps: This standard is applicable to electrode back-ups and clamps used in resistance spot welding equipment. This standard is used in conjunction with JB/T9530-1999 "Insulating caps and insulating bushings for resistance welding equipment". Cited Standards
JB/T9531-1999
idtIS05827:1983
Replaces ZBJ64013-88
The following standards contain clauses that constitute the clauses of this standard through reference in this standard. When the standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. JB/9530--1999 Insulating caps and insulating bushings for resistance welding equipment (idtISO7931:.1985) 3 Dimensions
3.1 The shape and size of the A-type electrode stopper (semi-finished product) are shown in Figure 1 KR5
3.1.1 Material
The material of the stopper is copper T2.
3.1.2 Marking
The marking method for the blocks that comply with this standard is as follows: Approved by the State Bureau of Machinery Industry on August 6, 199962
Implementation on January 1, 2000
Block shape
JB/T95311999
JB/T9531-□
For example: The mark of a block with an A-type shape and a length of 2000mm is: Block shape JB/T9531—A2000
3.2 The type and size of the mold electrode are shown in Figure 2, 10-..
Note: All other dimensions of types C and D are the same as those of type B. 3.2.1 Material
The material of the mold electrode is chromium bronze QCro0.5. 3.2.2 Marking
The marking method for wedge electrodes that comply with the provisions of this standard is as follows: Wedge electrode JB/T9531—
Block shape length
Type letter
This standard number
Mold electrode length
Type letter
This standard number
JB/T95311999
For example: a wedge electrode with a B-type shape and a length of 50mm is marked as: Wedge electrode JB/T9531—B50
3.2.3 Marking
Mold electrodes that comply with the provisions of this standard should be marked with type letters and material grades on the finished products. For example: Type B, wedge electrode made of chrome bronze QCr0.5, is marked as BQCro.5 on the finished product.
The type and size of the clamp are shown in Figure 3
Note: All other dimensions of Type F are the same as those of Type E. 3.3.1 Material
The material of the clamp is brass H59,
3.3.2 Marking
The marking method of the clamp conforming to this standard is as follows: Clamp
JB/T9531-
For example: A clamp with an E-shaped appearance and a width of 35mm is marked as: E-type
Clamp width
Type letter
Number of this standard
Clamp JB/T9531—E35
3.3.3 Marking
Clamp conforming to this standard should be marked with type letter and width on the finished product. For example: E-type clamp, width 25, marked as: E253.4 The overall dimensions of the block with cooling holes (finished product) are shown in Figure 4 and Table 1mm
Distance between welding points
25 ± 4
40 ±4
45 ± 4
50 ± 4
56 ± 4
40 ± 10
50±10
>60 and single spot welding
JB/T9531-1999
Sealing plug
Z view
Mold electrode
JB/T9531-1999
The assembled electrode block and clamp are shown in Figure 5: 3.5
Bolt M10×40
Insulating bushing
Insulating raw
Insulating pin
>600mm and single spot welding
Bolt M6X20
Nut M3
Positioning nut
Bolt M8X60
The entire block can be drawn with a simple drawing in the assembly drawing. JB/T9531-1999
For example: the entire block has 8 electrodes, and the distance between the welding points is 25mm, which can be represented by Figure 6. +++
JB/T9531
G8×25
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