GB/T 23541-2017Bonded abrasive products—Grinding wheel for steel balls (English PDF)

Foreword

This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard replaces GB/T 23541-2009 "Bonded abrasive products - Grinding wheel for steel balls". As compared with GB/T 23541-2009, the main technical changes are as follows.

- MODIFY the scope of application (SEE Chapter 1; Chapter 1 of the 2009 version);

- ADD normative references GB/T 2484 "Bonded abrasive products - General requirements", GB/T 2485 "Bonded abrasive products - Technical specifications", and GB 2494 "Bonded abrasive products - Safety requirements" (SEE Chapter 2);

- ADD the basic dimensions (SEE Table 2 in 3.2), limit deviation (SEE Table 4 in 4.2), geometrical tolerancing (SEE 4.3), hardness value and the test method (SEE 5.2 and Appendix A) of the resinoid bonded grinding wheel for steel balls;

- MODIFY the technical requirements for appearance of vitrified grinding wheel for steel balls (SEE 4.4; 5.4 of the 2009 version);

- MODIFY the marking of grinding wheel (SEE 4.6; Chapter 8 of the 2009 version);

- MODIFY the hardness test method of vitrified grinding wheel for steel balls (SEE 5.2; 6.2 of the 2009 version);

- ADD requirements for transport and storage (SEE Chapter 7).

1 Scope

This Standard specifies the shape symbol, dimensions, marking, technical requirements, test methods, inspection rules, packing, transport, and storage of grinding wheel for steel balls.

This Standard applies to vitrified bonded, resinoid bonded grinding wheel for steel balls (hereinafter known as grinding wheel for short).

2 Normative references

The following documents are indispensable for the application of this document.

For the dated references, only the versions with the dates indicated are applicable to this document. For the undated references, the latest version (including all the amendments) are applicable to this document.

GB/T 2476 Conventional abrasive - Symbols

GB/T 2481.1 Bonded abrasives - Determination and designation of grain size distribution - Part 1: Macrogrits F4 to F220

GB/T 2481.2 Bonded abrasives - Determination and designation of grain size distribution - Part 2: Microgrits

GB/T 2484 Bonded abrasive products - General requirements

GB/T 2485 Bonded abrasive products - Technical specifications

GB/T 2490 Bonded abrasive products - Hardness grade measurement

GB 2494 Bonded abrasive products - Safety requirements

GB/T 2495 Bonded abrasive products - Packing

JB/T 7992 Bonded abrasive products - Test method of appearance, dimensions and geometrical tolerancing

JB/T 10450 Bonded abrasive products - Inspection rules

4 Technical requirements

5 Test methods

5.1 The limit deviation of basic dimensions, geometrical tolerancing, appearance, and marking of grinding wheel shall be inspected in accordance with the provisions of JB/T 7992.

5.2 The hardness of vitrified bonded grinding wheel for steel balls shall be tested according to the provisions of GB/T 2490. The test is carried out with a 28 cm³ sand chamber; the abrasive blasting hardness test is performed 3 times per point; and the 3rd test value is taken as the final hardness value. The hardness uniformity of grinding wheel is the absolute value of the difference between the hardness values of two points. The hardness of resinoid bonded grinding wheel for steel balls shall be tested using a portable Leeb hardness tester. The specific method is as specified in Appendix A.

6 Inspection rules

6.1 The grinding wheel shall, according to the technical requirements of this Standard, be subjected to exit-factory inspection.

6.2 The classification and items for non-conformity shall be in accordance with the provisions of Table 6.

6.3 Sampling plan, discriminating level, and batch quality judgment shall be in accordance with the provisions of JB/T 10450. […]