JB/T 7991.1-2001 JB/T 7991.1-2001 Electroplated superhard abrasive products code and mark JB/T7991.1-2001 Standard download decompression password: www.bzxz.net
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JB/T 7991. 1--2001 This standard is a revision of JB/T7991.1-1995 "Codes for Electroplated Diamond Internal Cutting Saw Blades and Assorted Files". This standard has made corresponding supplements to the content of JB/T7991.1--1995, making the standard more reasonable, comprehensive and complete. The name of this standard is changed to "Codes and Markings for Electroplated Superhard Abrasive Products". This standard replaces JB/T7991.1--1995 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: Suzhou Grinding Wheel Factory. The participating drafting units of this standard: Sixth Grinding Wheel Factory. The main drafters of this standard: Chen Baoheng, Mo Yunshui, Xue Mingzhang. This standard was first issued in June 1987 as GB8065--86, and the standard number was adjusted to JB/T7991.1-1995 in April 1996. This is the first revision. 1 Specification Standard of the Machinery Industry of the People's Republic of China Electroplated superabrasive products Symbol and designation for electroplated superabrasive products This standard specifies the general characteristics and shape codes of electroplated superabrasive products. This standard applies to electroplated metal bond superabrasive products. 2 Shape and code 2.1 Internal circular cutting saw blade The shape and code of the internal circular cutting saw blade shall comply with the provisions of Table 1. Table 1 Internal circular cutting saw blade 2.2 Assorted files The shape and code of assorted files shall comply with the provisions of Table 2. Name Pointed flat file Pointed semi-circular file Pointed square file Pointed equilateral triangular file China Machinery Industry Federation 2001-03-29 approved 224 JB/T 7991. 1--2001 Replace JB/T7991.1--1995 2001-07-01 Implementation Pointed round file Pointed double-sided round flat filebzxz.net Pointed knife-shaped file Pointed blue angle file Pointed double semi-circular file Pointed elliptical file Flat flat file Flat equilateral triangle chain Flat round file 2.3 Grinding head The shape and code of the grinding head shall comply with the provisions of Table 3. Name 3 Binding agent code The binding agent code for electroplated metal products is Me. Characteristic marking of electroplated superhard abrasive products 4.1 Writing order Product shape, size, abrasive, particle size, binding agent. 4.2 Marking examples JB/T 7997.1—2001 Table 2 (end) 4.2.1 Internal cutting saw blade 206X0.20X83×18 4.2.2 Assorted chains NF1 140X50 4.2.3 Grinding head 1.5×3×30 120/140 JB/T 7991, 1--2001 325/400 Binder One abrasive Number of positioning holes n -Inner diameter d Total thickness T One outer diameter D -Shape code Binder One grain size —Abrasive One diamond layer length L One total length L -Shape code 325/400 One binder One grain size Axis length L Spindle diameter Y Diameter D -Shape code Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.