GB/T 2493-2023 English PDF (GB/T 2493-2013, GB/T 2493-1995)

GB/T 2493-2023_English: PDF (GB/T2493-2023)
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 2493-2023329 Add to Cart 4 days Test method for rotating strength of abrasive products Valid
GB/T 2493-2013150 Add to Cart Auto, < 3 mins Rotation test of grinding wheel strength Obsolete
GB/T 2493-199595 Add to Cart Auto, < 3 mins Rotation test of grinding wheel strength Obsolete
GB 2493-1984RFQ ASK 3 days Methods for determination of revolving strength of grinding wheels Obsolete

BASIC DATA
Standard ID GB/T 2493-2023 (GB/T2493-2023)
Description (Translated English) Test method for rotating strength of abrasive products
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J43
Classification of International Standard 25.100.70
Word Count Estimation 16,166
Date of Issue 2023-11-27
Date of Implementation 2024-06-01
Older Standard (superseded by this standard) GB/T 2493-2013
Drafting Organization Zhengzhou Abrasives and Grinding Tools Grinding Research Institute Co., Ltd., Baige Abrasives and Grinding Tools Co., Ltd., Suzhou Far East Grinding Wheel Co., Ltd., Beijing Antai Steel Research Superhard Material Products Co., Ltd., Yangquan Zhongjia Abrasives and Grinding Tools Co., Ltd., Zhengzhou Anxin Grinding Technology Co., Ltd
Administrative Organization National Abrasives and Abrasives Standardization Technical Committee (SAC/TC 139)
Proposing organization China Machinery Industry Federation
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

BASIC DATA
Standard ID GB/T 2493-2013 (GB/T2493-2013)
Description (Translated English) Rotation test of grinding wheel strength
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J43
Classification of International Standard 25.100.70
Word Count Estimation 8,833
Older Standard (superseded by this standard) GB/T 2493-1995
Quoted Standard GB 2494
Drafting Organization Zhengzhou Institute of abrasive grinding abrasive
Administrative Organization National Standardization Technical Committee Abrasives
Regulation (derived from) National Standards Bulletin 2013 No. 27
Proposing organization China Machinery Industry Federation
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the wheel rotation test equipment, test chuck and rotary separator test requirements and test methods. This standard applies to all kinds of wheel binding agent.

BASIC DATA
Standard ID GB/T 2493-1995 (GB/T2493-1995)
Description (Translated English) Rotation test of grinding wheel strength
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J43
Classification of International Standard 25.100.70
Word Count Estimation 2,221
Date of Issue 1995/12/1
Date of Implementation 1996/8/1
Older Standard (superseded by this standard) GB 2493-1984
Drafting Organization Zhengzhou Institute of abrasive grinding abrasive
Administrative Organization National Standardization Technical Committee Abrasives
Proposing organization Ministry of Machinery Industry of the People Republic of China
Issuing agency(ies) State Bureau of Technical Supervision
Summary This standard specifies test methods for turning the wheel. This standard applies to all kinds of wheel binding agents and other tests require rotating abrasive.


GB/T 2493-2023: Test method for grinding tool rotational strength ICS 25:100:70 CCSJ43 National Standards of People's Republic of China Replace GB/T 2493-2013 Grinding tool rotational strength test method Published on 2023-11-27 2024-06-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Preface This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 2493-2013 "Grinding wheel rotation test method": Compared with GB/T 2493-2013, except for structural adjustments and In addition to editorial changes, the main technical changes are as follows: a) Changed the scope of application (see Chapter 1, Chapter 1 of the:2013 edition); b) Added the requirement that the rotation testing machine should increase evenly (see 4:1:2); c) The relative error range of the spindle speed of the rotary testing machine has been changed (see 4:1:3, 3:2 of the:2013 version); d) The requirements for radial circular runout of the spindle of the rotary testing machine have been changed (see 4:1:4, 3:3 of the:2013 edition); e) Added requirements for recording or displaying the spindle speed of the rotary testing machine (see 4:1:6); f) The tensile strength requirements for chuck and spacer materials and bushing materials have been changed (see 4:2:1, 5:2, 4:4 and 5:3 of the:2013 edition); g) The regulations for installation and clamping of grinding tool rotation test have been changed (see 5:1, 5:2 of the:2013 edition); h) Added installation and clamping regulations for special installation methods of grinding tool rotation test (see 5:4); i) Changed the setting method of rotation test parameters (see 6:1, 5:1 and 6:1 of the:2013 edition); j) Added the step of idling in the rotation test (see 6:2); k) Added the method to deal with the breakage of the grinding tool during the rotation test (see 6:6); l) Added requirements for test reports (see Chapter 7): Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed by China Machinery Industry Federation: This document is under the jurisdiction of the National Abrasives and Abrasives Standardization Technical Committee (SAC/TC139): This document was drafted by: Zhengzhou Abrasives and Grinding Tools Grinding Research Institute Co:, Ltd:, Baige Abrasives and Grinding Tools Co:, Ltd:, Suzhou Far East Grinding Wheel Co:, Ltd: Company, Beijing Antai Gangyan Superhard Material Products Co:, Ltd:, Yangquan Zhongjia Abrasives Co:, Ltd:, Zhengzhou Anxin Grinding Technology Co:, Ltd: Ltd: The main drafters of this document: Lu Shenfeng, Bao Hua, Chen Deguang, Si Wenyuan, Liu Yibo, Xu Bangping, Fan Yian, Zhang Liang, Xing Bo, Zhang Huifang, Qi Shoubao, Luo Xiaoli: The previous versions of the documents replaced by this document are as follows: ---First published as GB 2493-1981 in 1981, revised for the first time in 1984, revised for the second time in:1995, and revised for the third time in:2013 revision; ---This is the fourth revision: Grinding tool rotational strength test method Warning: It is strictly prohibited to open the protective cover while the rotary testing machine is rotating: 1 Scope This document specifies the test equipment, test requirements, test methods and test reports for the rotational strength inspection of grinding tools: This document is applicable to the inspection of the rotational strength of bonded abrasives, coated abrasives and superabrasive products: 2 Normative reference documents The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB 2494 Safety requirements for bonded abrasive tools GB/T 16458 Abrasives Terminology GB/T 43134 Safety requirements for superabrasive products GB/T 43323 General safety requirements for coated abrasive tools 3 Terms and definitions The terms and definitions defined in GB/T 16458 apply to this document: 4 Test equipment 4:1 Rotary testing machine 4:1:1 The rotary testing machine should be selected according to the specifications, models and mounting methods of the abrasive tools: 4:1:2 The rotation testing machine should increase in speed evenly: 4:1:3 The relative error range of the spindle speed of the rotary testing machine is ±1:0%: 4:1:4 The radial circular runout of the spindle of the rotary testing machine for bonded abrasives and coated abrasives should not be greater than 0:03mm: The radial circular runout of the main shaft of the testing machine should not be greater than 0:02mm: The measurement position is: one-half of the exposed effective part of the spindle (with chuck The spindle is located 5mm~10mm away from the end face of the spindle after removing the chuck): 4:1:5 The rotary testing machine should be equipped with a timing control device to automatically start timing after the spindle speed reaches the set speed: Keep the speed stable within a certain period of time, and automatically start to slow down at the end of the set time: 4:1:6 The rotary testing machine should be able to record or display the maximum rotational speed reached by the spindle during the rotation test or the rotational speed when the grinding tool breaks: 4:1:7 The noise sound pressure level of the rotary testing machine when no-load should not exceed 85dB(A): 4:1:8 The protective cover of the rotary testing machine should be strong to ensure that the rotary test can be carried out safely: 4:1:9 The rotary testing machine should be calibrated regularly, and the recalibration interval should not exceed one year: The rotary testing machine after repair should be recalibrated: 4:2 Chuck and partition for rotation test 4:2:1 The tensile strength of the chuck and partition materials should not be less than 415N/mm2 (45 steel is recommended): ......


GB/T 2493-2013 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.100.70 J 43 Replacing GB/T 2493-1995 Rotation test of grinding wheel strength ISSUED ON: DECEMBER 31, 2013 IMPLEMENTED ON: OCTOBER 01, 2014 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3  1 Scope ... 4  2 Normative references ... 4  3 Test equipment ... 4  4 Chuck and partition for rotation test ... 5  5 Test requirements ... 5  6 Test method ... 6  Appendix A (Informative) Chuck and partition for rotation test ... 7  Rotation test of grinding wheel strength 1 Scope This Standard specifies the rotation test equipment, chuck and partition for rotation test, test requirements and test methods for grinding wheels. This Standard applies to grinding wheels of various bonding agents. 2 Normative references The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document. GB 2494, Bonded abrasive products -- Safety rules 3 Test equipment 3.1 The rotation testing machine is selected according to the specifications and models of the grinding wheel and the way of installing the card. 3.2 The relative error range of the spindle speed of the rotation testing machine is ±1.5%. 3.3 The spindle radial run-out of the rotation testing machine is not more than 0.07 mm; the measurement position is 1/2 of the exposed part of the spindle. 3.4 The rotation testing machine shall be equipped with a timing device, to ensure automatic timing when the spindle speed reaches the test speed, and to maintain the automatic reduction of speed within set time. 3.5 For the noise of the rotation testing machine, the sound pressure level shall not exceed 85 dB(A) when it is no-load. 3.6 The protective cover of the rotation testing machine shall be firm and safe. 3.7 The rotation testing machine shall be calibrated regularly; the recalibration interval shall not exceed 1 year; the rotation testing machine shall be calibrated after repair. -- Rupture speed test: install the grinding wheel on the rotation testing machine; perform the rotation test in accordance with the minimum rupture speed that is specified in GB 2494. 5.2 The grinding wheel that is installed on the spindle of the rotation testing machine shall be fastened by chucks at both ends. 5.3 When the aperture of the grinding wheel is larger than the outer diameter of the spindle of the rotation testing machine, it’s allowed to use a shaft sleeve; the tensile strength of the shaft sleeve material shall not be less than 411 MPa. 5.4 During the safety speed test, it is allowed to install multiple grinding wheels on the spindle of the rotation testing machine at the same time; the grinding wheels shall be separated by partitions. The outer diameter of the partition and the width of the pressing surface are the same as the chuck. 5.5 During the rupture speed test, test one wheel at a time. 5.6 Where there are other provisions for the rotation test method in the product standard, it shall be implemented in accordance with the product standard. 6 Test method 6.1 Turn on the power switch; set the speed of the testing machine to the speed that is required for the grinding wheel rotation test. 6.2 According to the provisions of Chapter 5, install the grinding wheel piece by piece to the spindle of the rotation testing machine. 6.3 Lock the test method protective cover of the testing machine; start the testing machine. 6.4 After the testing machine stops rotating, open the protective cover of the testing machine and remove the grinding wheel. ......


GB/T 2493-1995 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.100.70 J 43 Rotation test of grinding wheel strength ISSUED ON: DECEMBER 01, 1995 IMPLEMENTED ON: AUGUST 01, 1996 Issued by: State Bureau of Technical Supervision Table of Contents 1 Scope ... 3  2 Test equipment ... 3  3 Test conditions and methods ... 3  Appendix A Chuck and partition for rotation test (Supplementary) ... 6  Additional information: ... 8  Rotation test of grinding wheel strength 1 Scope This standard specifies the rotation test method of the grinding wheel strength. This standard applies to grinding wheels with various bonding agents and other abrasive tools that need to be subject to rotation test. 2 Test equipment 2.1 The rotation test is carried out on a special rotation testing machine according to the diameter, quality and maximum working speed of the grinding wheel. 2.2 The spindle speed error of the rotation testing machine shall not be more than 3%. 2.3 The radial runout of the main shaft of the rotation testing machine is not more than 0.07 mm. The measurement location is the middle of the mandrel. 2.4 The rotation test machine shall be equipped with a time relay, to ensure that when the spindle speed reaches the test speed, the speed will be reduced after maintaining a specified period of time. 2.5 The noise level of the rotation testing machine shall not exceed 85 dB(A) at no load. 2.6 The protective cover of the rotation testing machine shall be firm and safe. 2.7 The rotation testing machine shall be inspected regularly. 3 Test conditions and methods 3.1 The rotation test shall be carried out according to the following method at the maximum working speed as marked on the grinding wheel. For grinding wheels with a maximum working speed of less than or equal to 50 m/s, the rotation test is performed at 1.6 times the maximum working speed; after reaching to the maximum speed, it is maintained for 30 s. For grinding wheels with a maximum working speed greater than 50 m/s, the rotation test is performed at 1.5 times the maximum working speed; after reaching to the maximum speed, it is maintained for 30 s. Note: If there are other provisions for the rotation test method in the product standard, the product standard shall be implemented. 3.2 It is allowed to install multiple grinding wheels on the main shaft of the rotation testing machine at the same time; different grinding wheels shall be separated by a partition. The outer diameter of the partition and the width of the pressing surface are the same as the chuck. 3.3 The grinding wheel as installed on the main shaft of the rotation testing machine shall be fastened by chucks at both ends. 3.4 When the hole diameter of the grinding wheel is larger than the outer diameter of the main shaft of the testing machine, a shaft sleeve is allowed. 3.5 Grinding wheel chuck 3.5.1 The shape and dimensions of the grinding wheel chuck and the partition are as shown in Appendix A (Supplementary). 3.5.2 For the grinding wheel whose outer diameter and the diameter are not listed in Appendix A (Supplementary), the outer diameter of the chuck shall conform to formula (1) Where: Df - Outer diameter of chuck, mm; D - Outer diameter of grinding wheel, mm; H - Aperture of grinding wheel, mm. 3.5.3 The outer diameter of the cymbal-shaped grinding wheel chuck shall conform to formula (2); the other dimensions shall be in accordance with Appendix A, Table A1. Where: Df - Outer diameter of chuck, mm; D1 - The inner bottom diameter of grinding wheel, mm. ......


Similar standards: GB/T 2484-2023  GB/T 2490-2018  
Similar PDFs (Auto-delivered in 9 seconds): GB/T 2493-2013  GB/T 2480-2022  GB/T 23541-2017  JB/T 10155-2012