GB/T 13313-2008 English PDF

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GB/T 13313-2008: Methods of Shore and Leeb hardness testing for rolls
Status: Valid

GB/T 13313: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13313-2008	229	Add to Cart	3 days	Methods of Shore and Leeb hardness testing for rolls	Valid
GB/T 13313-1991	479	Add to Cart	4 days	Method of Shore hardness testing for mill rolls	Obsolete

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Basic data

Standard ID: GB/T 13313-2008 (GB/T13313-2008)
Description (Translated English): Methods of Shore and Leeb hardness testing for rolls
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H94
Classification of International Standard: 77.180
Word Count Estimation: 10,186
Date of Issue: 2008-09-11
Date of Implementation: 2009-05-01
Older Standard (superseded by this standard): GB/T 13313-1991
Regulation (derived from): National Standard Approval Announcement 2008 No.16 (Total No.129)
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 roll Shore hardness and hardness Richter said, testing methods. The test instrument, measured roll, data processing, trials reporting requirements and hardness conversion tables. This standard applies to all types of forged steel, cast steel and cast iron roll Shore hardness and Leeb hardness measurement.

GB/T 13313-2008: Methods of Shore and Leeb hardness testing for rolls

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods of Shore and Leeb hardness testing for rolls ICS 77.180 H94 National Standards of People's Republic of China Replacing GB/T 13313-1991 Roll Shore, Leeb hardness test Posted 2008-09-11 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 13313-1991 "roll Shore hardness test." This standard GB/T 13313-1991 and main technical differences are as follows. --- Name changed to "roll Shore, Leeb hardness test methods"; --- Normative references made additional adjusted; --- Added Leeb hardness representation, test methods, and test equipment, test rolls, the data processing requirements of the test report; --- Increased the hardness, the hardness of the block requires the detection of high smoothing roll; --- Clear hardness, according to the hardness test blocks; --- Tested improved the hardness of the surface roughness of the roll test requirements; --- Consider the cold, the impact of thermal processing on the sample surface hardness; --- Increased its test site environmental requirements; --- Barrel diameter of 300mm or less roll, roll body determined to test bus number 2; the barrel diameter greater than 300mm, less than Equal to 500mm rolls, an increase of a barrel test bus; --- For the distribution of the test bus made provisions; --- Adds forged steel, cast iron, cast steel rolls HSD-HLD hardness table; --- Hardness of no more than everyday use than the pair of rollers, to standard hardness block; --- Deleted the original standard in Appendix A "C type Shore hardness tester main technical parameters," Appendix B "E-type Shore hardness tester main technical parameters Number ", Appendix C" than the roll main technical parameters "; --- Deleted the original standard Appendix D "hardness conversion table" in the HRA and its data, and Brinell hardness HBW Vickers hardness HV Data made further changes and additions. The Standard Appendix A, Appendix B are informative appendices. The standard proposed by China Iron and Steel Association. The standard rule of the Central Group of Beijing Metallurgical Equipment Research and Design Institute under the jurisdiction. This standard was drafted. Sinosteel Xingtai Machinery & Mill Roll Co., Ltd., China Metallurgical Group of Beijing Metallurgical Equipment Research and Design Institute, China test Test Technology Research Institute. Drafters of this standard. Jin Yuan Hao, Zhao Baolin, Lin Ju Cai, Yang Jingang, Zhang Yunbo. This standard was first released in December 1991. Roll Shore, Leeb hardness test

1 Scope

This standard specifies the roll Shore hardness Leeb hardness and representation, test methods, test equipment, test rolls, data processing, test Reporting requirements and hardness conversion tables. This standard applies to all types of forged steel, cast steel and cast iron roll and a Shore hardness Leeb hardness measurement.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1172-1999 ferrous metal hardness and strength conversion value GB/T 4341 metal Shore hardness test GB/T 8170 numerical rounding rules GB/T 17394-1998 Metal Leeb hardness test JJG346 Shore hardness tester JJG347 standard Shore hardness block JJG747 Leeb hardness tester

3 Test principle

3.1 Shore hardness test principle Calculate the ratio Shore hardness values. The formula of formula (1) below. (1) Where. HS --- Shore hardness; K --- Shore hardness factor. 3.2 Principle Leeb hardness test A predetermined quality impact body under the force of the impact surface of the sample at a constant speed, punch in the rebound from the surface speed at 1mm The ratio of the impact velocity is calculated hardness values. The formula of formula (2) below. HL = 1000 Vp R Vp A (2) Where. HL --- Leeb hardness; Vp R --- rebound velocity of impact body; A --- vp impact body impact velocity.

4 represents the hardness values

It represents 4.1 Shore hardness values Before Shore hardness symbol HS shows hardness values \u200b\u200bshown in the HS hardness scale type. ......

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