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GB/T 23541-2017 PDF English

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GB/T 23541-2017: Bonded abrasive products - Grinding wheel for steel balls
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GB/T 23541: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 23541-2017English150 Add to Cart 0-9 seconds. Auto-delivery Bonded abrasive products - Grinding wheel for steel balls Valid
GB/T 23541-2009English239 Add to Cart 2 days Bonded abrasive products -- Grinding wheel for steel balls Obsolete

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GB/T 23541-2017: Bonded abrasive products - Grinding wheel for steel balls

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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.100.70 J 43 Replacing GB/T 23541-2009 Bonded abrasive products - Grinding wheel for steel balls Issued on: DECEMBER 29, 2017 Implemented on: JULY 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the PRC; Standardization Administration of the PRC.

Table of Contents

Foreword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Shape symbol, dimensions, and marking ... 6 4 Technical requirements ... 7 5 Test methods ... 8 6 Inspection rules ... 8 7 Packing, transport, and storage ... 9 Appendix A (Normative) Inspection method for hardness of resinoid bonded grinding wheel for steel balls ... 10

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). This Standard was proposed by China Machinery Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee 139 on Abrasives and Sharper of Standardization Administration of China (SAC/TC 139). Drafting organizations of this Standard. White Dove (Group) Company Limited, Zibo Taiyu Guangyi Abrasive Tool Co., Ltd., Yangzhou East Grinding Wheel Co., Ltd. Main drafters of this Standard. Li Xiangdong, Chen Deguang, Su Naifeng, Jin Hua, Shi Yi, Wang Xuetao, Chang Shuming. The previous versions of the standard replaced by this Standard were released Bonded abrasive products - Grinding wheel for steel balls

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 4.4 Appearance The grinding wheel shall be free of any inclusions, delamination, or cracks. 4.5 Hardness Vitrified bonded grinding wheel for steel balls shall be inspected for hardness compliance and uniformity. The abrasive blasting hardness pit depth value shall not be more than 0.6 mm. The hardness uniformity shall not be more than 0.15 mm. Resinoid bonded grinding wheel for steel balls shall be inspected for hardness uniformity. The uniformity shall not be more than 3 HRC. 4.6 Marking The marking of grinding wheel shall comply with the provisions of GB/T 2485. The working surface shall be marked.

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. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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