JB/T 3629-1999 This standard is a revision of JB 3629-84 "Technical Conditions for Black Corundum". Only editorial changes have been made according to relevant regulations, and the main technical content has not changed. This standard specifies the technical requirements, test methods, inspection rules and packaging of black corundum abrasives. This standard is applicable to black corundum abrasives used in the manufacture of abrasive tools and grinding materials. This standard was first issued on March 22, 1984. JB/T 3629-1999 Common Abrasive Black Corundum JB/T3629-1999 Standard Download Decompression Password: www.bzxz.net

ICS25.100.70
Machinery Industry Standard of the People's Republic of China
JB/T3629—1999
Ordinary Abrasives
Published on May 20, 1999
Black Corundum
Implemented on January 1, 2000
National Bureau of Machinery Industry
JB/T3629—1999
This standard is a revision of JB362984 "Technical Conditions for Black Corundum". The technical content of this standard is consistent with that of JB3629-84, and it has only been re-edited according to relevant regulations. This standard replaces JB3629-84 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Abrasives and Grinding Tools. The drafting unit of this standard: Baige Group Co., Ltd. The main drafter of this standard: Huang Daoshu.
Mechanical Industry Standard of the People's Republic of China
Ordinary Abrasives
Black Corundum
This standard specifies the technical requirements, test methods, inspection rules and packaging of black corundum abrasives. This standard applies to black corundum abrasives used in the manufacture of abrasive tools and grinding materials. 2 Cited Standards
JB/T3629-1999
Replaces JB362984
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/T 2481.1—1998
GB/T 2481.2—1998
GB/T46761984
GB/T53441985
GB/T9258—1988
JB/T3630—1984
JB/T65691993
JB/T7984.3—1995
JB/T79951999
3 Technical requirements
Testing of abrasive grain composition for bonded abrasives Measurement and marking Part 1: Coarse abrasives F4-F220 Detection and marking of abrasive grain size composition for bonded abrasives Part 2: Fine powder F230~F1200 Ordinary abrasives Sampling methodwwW.bzxz.Net
Ordinary abrasives Fine powder grain size determination method with sedimentation tube Abrasive fine powder grain size and composition for coated abrasives Abrasive grain size composition for coated abrasives
Ordinary abrasives packaging
Ordinary abrasives density determination method
Black corundum chemical analysis method
The chemical composition shall comply with the provisions of Table 1.
Grit size range
F220 (P220) and coarser
Finer than F220 (P220)
The density shall comply with the provisions of Table 2.
Grain size range
F220 (P220) and coarser
Finer than F220 (P220)
Approved by the State Bureau of Machinery Industry on May 20, 1999Al, o3
Chemical composition%
Gravity g/cm2
Implemented on January 1, 2000
3.3 Grain size composition
JB/T3629-1999
3.3.1 Abrasives for bonded abrasives shall comply with the provisions of GB/T2481.1 and GB/T2481.2. 2 Abrasives for coated abrasives shall comply with the provisions of JB/T3630 and GB/T92583.3.2
4 Test method
4.1 Chemical composition shall be tested in accordance with the provisions of JB/T7995. The density shall be tested in accordance with the provisions of JB/T7984.3. 4.2
Grit composition
Abrasives for bonded abrasives shall be tested in accordance with the provisions of GB/T2481.1 and GB/T2481.2. 4.3.2 Abrasives for coated abrasives shall be tested in accordance with the provisions of JB/T3630 and GB/T5344. 5 Inspection rules
The sampling and reduction of samples shall be carried out in accordance with the provisions of GB/T4676. 5.1
Each batch of products shall be inspected in accordance with the technical requirements. When all the inspected items meet the technical requirements, the batch of products shall be deemed qualified. 5.2
According to the provisions of JB/T6569.
Mechanical Industry Standard
Ordinary Abrasive Black Corundum
JB/T3629-1999
Published by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry Printed by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
1/16 Printing Sheet 1/2 Number of Words 6000
Book Size 880×1230
First Printing in September 1999
First Edition in September 1999
Print Quantity 1-500
Price 500 Yuan
99-562
6666298 /
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