This standard specifies the type and size, material, appearance and surface roughness, inspection rules and test methods, marking, packaging, transportation and storage specifications of cemented carbide inserts for impact drills and electric hammer drills. This standard applies to cemented carbide inserts for impact drills and electric hammer drills. JB/T 8369-1996 Cemented Carbide Inserts for Impact Drills and Electric Hammer Drills JB/T8369-1996 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T 8369-96
Carbide inserts for impact drills and electric hammer drills
Issued on April 22, 1996
Ministry of Machinery Industry of the People's Republic of China
Implemented on July 1, 1996
JB/I 8369:·96
This standard was proposed and approved by the National Tool Standardization Technical Committee. The responsible parties for the drafting of this standard are: Jiangsu Zhunli City Tool Factory, Chengdu Measuring Tool and Cutting Tool Co., Ltd., Hunan Shaoyang Gonger General Factory, Shanglinjiang Tool Factory and Tianju Second Tool Factory. The main drafters of this standard are: Tian Liang, Yang Zhaofei, Xing Guobing, Yin Wenfa, Chen Weixin, and Wang Jianquan. This standard shall be implemented from July 1, 1996.
1 Scope
Machinery Industry Standard of the People's Republic of China
Carbide Inserts for Impact Drills and Electric Hammer Drills
JB/T 8369 96
This standard specifies the type and size, material, appearance and surface roughness, inspection and testing rules and test methods, and technical specifications for packaging, transportation and storage of carbide inserts for impact drills and electric hammer drills. This standard is applicable to carbide inserts for impact drills and electric hammer drills. 2 Reference Standards
The provisions of the following standards shall be incorporated into the provisions of this standard by reference in this standard. When this standard is issued, the versions shown are valid. All standards are subject to revision, and the parties using this standard should explore the possibility of continuing to use the latest versions of the following standards. B5242-85 Inspection rules and test methods for high-quality alloy products GB5243-85 Marking of high-quality gold-containing products. Packaging, transportation and storage 883-7?
3 Symbol
Metal alloy mining and geological tool products
α α-metal alloy blade circumscribed circle diameter
Height of metal alloy blade
Reverse metal alloy blade width
Chamfer width of metal alloy blade
Second design of geological alloy blade
4 Type and size
The type and size of metal alloy blade are shown in Figure 1 and Table 1, 4.1
Approved by the Ministry of Machinery Industry on April 22, 1996
Implementation on July 1, 1996
Basic size
Reported on the basis of
JB/T8369-96
1. 4±0. 10
2.0+0. 1uwwW.bzxz.Net
2.2±:1.10
2 5±3.10
3. E±5. 1c
1. 0-6 1c
Deviation
JB/E8369-96
Table 1(shell)
4.2 The bottom of the carbide insert should be carefully angled. When 5 is less than the required angle, no angle is allowed. 4.3 The tolerance of the two sides of the hardware sheet shall not be greater than 0.05mm4.4 Marking example
gauge =?mm sheet
sheet 7-AB/R9-
5 Material
The sheet material is made of YBR5 specified YG8, YG&C, YG1IC grade hard alloy or other high-quality metal with performance above the same level, and its physical and mechanical properties shall conform to the specifications of the relevant metal standards. 6 Appearance and surface roughness
6. The surface should be treated with sand or polishing, and there will be no defects such as peeling, blistering, and fading. The height of the blade should not be greater than 0.2mm. (.30,000 pieces can be marked with a box with an upper limit of R, 12.5m:7 Inspection regulations and test methods
The inspection regulations and test methods shall be in accordance with the relevant provisions of GB5242. 8 Marking. Packaging, transportation and storage
The marking, packaging, transportation and storage of the pieces shall be in accordance with the provisions of GB5243.
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