JB/T 8000-1999 JB/T 8000-1999 Diamond Frame Saw Blade JB/T8000-1999 Standard download decompression password: www.bzxz.net

JB/T 8000--1999
This standard is a revision of JB/T8000--95 "Diamond Frame Saw Blades" (formerly GB11271-89). This standard is consistent with the technical content of JB/T8000--95, and has only been re-edited according to relevant regulations. This standard replaces JB/T8000--95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for the Promotion of Abrasives and Grinding Tools Standardization. The drafting unit of this standard: the Sixth Grinding Wheel Factory. The main drafter of this standard: Liu Jianbang.
This standard was first issued on March 31, 1989. 248
Machinery Industry Standard of the People's Republic of China
Diamond Frame Saw Blade
JB/T 8000—1999
Replaces JB/T 8000—95
This standard specifies the name, code, shape and basic dimensions, technical requirements, inspection rules and marking, packaging, transportation and storage of diamond frame saw blades.
This standard is applicable to diamond frame saw blades for cutting marble, etc. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1222—1984 Spring steel
GB/T6405--1994
GB/T 6406-
—·1996
JC/T 220--1979
3 Names and codes
Types of artificial diamond and cubic boron nitride
Diamond or cubic boron nitride particle size
Superhard abrasive
Natural diamond
3.1 The shape code of the saw blade is BA2. The names, sizes and codes of its components are shown in Figures 1, 2 and Table 1. Substrate
Approved by the Bureau of Machinery Industry on 1999-05-20A
Golden stone layer shape
Diamond layer position
Implemented from 2000-01~01
Abrasive code see Table 2.
Artificial diamond
Natural golden stone
Total length
Effective working length
Tooth length
Total depth of tooth
Diamond layer depth
Abrasive particle size range see Table 3.
Particle size range
Narrow range
Wide range
3.4Concentration code see Table 4.
Concentration code
Note: Other concentrations are calculated according to the proportion in this table. 3.5Binder code is M.
3.6 Saw blade marking and examples are as follows:
JB/T 8000--1999
Diamond content
Matrix width
Matrix thickness
Side clearance (T_E)
Width of dovetail fixing plate
Fixed plate position Total thickness
Angle of dovetail fixing plate
Number of teeth
A-AXAXA-A
JB/T8000—1999
Binder
Abrasive brand
Diamond layer depth
Effective length L2
Total length L
Shape code
Example: Shape is BA2, L,=3200 mm, Lz=1000mm, z=5mm, z=16, abrasive brand MBD12, particle size 40/50, binder M, concentration 25 saw blades are marked as follows: BA2-3 200 X1 000 X 5-16MBD12-40/50M25 Basic dimensions of saw blades
Basic dimensions of saw blades are shown in Table 5.
Basic dimension limit deviation Basic dimension limit deviation 3.5
Note: Dimension L and number of teeth & are agreed upon by the supplier and the buyer according to user requirements. L
5 Technical requirements
JB/T 8000—1999
5.1 The abrasive should comply with the provisions of GB/T6405~6406 and JC/T220. 5.2 Matrix
5.2.↑Matrix material shall comply with 65Mn steel specified in GB/T1222 or steel with mechanical properties not less than 65Mn. 5.2.2 Hardness shall be 3742HRC.
5.2.3 Service strength 00.2 shall not be less than 784N/mm2. 5.2.4 Matrix shall be flat and free of creases, cracks, burrs and rust. 5.3 Saw teeth shall not have cracks or damage to edges of more than 1mm along the length, width and height. 5.4
Matrix deflection shall be in accordance with the provisions of Table 6.
Saw blade center gauge value
Total length of saw blade
2000～2500
2800~4000
4 500 ~ 6 000
5.5 Welding
Low feed or soft marble
High feed or hard marble
2. 1～2. 2
2.2～3.2
5.5.1 The weld should be full and free of cracks, bubbles and solder accumulation above the end face of the saw tooth; the height deviation of the welded teeth on the same saw blade shall not exceed 0. 30 mm.
5.5.2 The saw teeth are welded to the substrate, and the symmetry of the end face direction shall not exceed 0.20 mm, see Figure 3. Sichuan
6 Inspection rules
6.1 Saw blades must be inspected before leaving the factory and should meet the technical requirements. Those that pass the inspection should be accompanied by a certificate of conformity. 6.2 Visual inspection of the substrate appearance defects.
6.3 The substrate hardness is tested at any three points using a Rockwell hardness tester. 6.4 The substrate yield strength is tested using a tensile testing machine. 6.5
The saw tooth size is measured using a vernier caliper with a graduation value of 0.02mm. 6.6 The end face symmetry of the saw teeth on the substrate is tested using a special dial indicator. 6.7
The deflection value is tested at the center of the saw blade using a vernier caliper with a graduation value of 0.02mm on a special inspection table. Marking, packaging, transportation and storage
7.1 The following markings should be placed on the end of the saw blade:
a) manufacturer's factory mark or factory name,
b) product number.
The marking should be clear and firm.
JB/T 8000—1999www.bzxz.net
7.3Each saw blade should be accompanied by a certificate of conformity, which should indicate the date of manufacture, the seal of the inspector, and the instruction manual. 7.4Saw blades should be coated with anti-rust oil before packaging. When packing, the saw blades should be padded with soft materials, and the gaps should be filled with soft materials such as paper scraps to prevent movement; the outer packaging should be marked with the words "handle with care", "protect against dirt", and "moisture-proof", and comply with relevant transportation regulations. 253
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