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GB/T 235-2013 English PDF

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GB/T 235-2013: Metallic materials -- Sheet and strip -- Reverse bend test
Status: Valid

GB/T 235: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 235-2013English169 Add to Cart 3 days [Need to translate] Metallic materials -- Sheet and strip -- Reverse bend test Valid GB/T 235-2013
GB/T 235-1999English319 Add to Cart 3 days [Need to translate] Metallic materials--Sheet and strip 3mm thick or less--Reverse bend test Obsolete GB/T 235-1999
GB/T 235-1988EnglishRFQ ASK 3 days [Need to translate] Metallic materials--Reverse bend test (Sheet and strip 3mm thick or less) Obsolete GB/T 235-1988

PDF similar to GB/T 235-2013


Standard similar to GB/T 235-2013

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Basic data

Standard ID GB/T 235-2013 (GB/T235-2013)
Description (Translated English) Metallic materials -- Sheet and strip -- Reverse bend test
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H23
Classification of International Standard 77.040.10
Word Count Estimation 7,749
Older Standard (superseded by this standard) GB/T 235-1999
Adopted Standard ISO 7799-1985; MOD
Regulation (derived from) National Standards Bulletin 2013 No. 17
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: metal sheet and strip repeated bending test methods principles, symbols, test equipment, specimens, test procedures and test reports. This standard applies to: thickness equal to or less than, mm-metal sheet and strip repeated ben

GB/T 235-2013: Metallic materials -- Sheet and strip -- Reverse bend test

---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.
Metallic materials. Sheet and strip. Reverse bend test ICS 77.040.10 H23 National Standards of People's Republic of China Replacing GB/T 235-1999 Metallic materials - Sheet and strip - Repeated bending test method (ISO 7799. 1985, Metalicmaterials- Sheetandstrip3mmthickorless-Reversebendtest, MOD) Issued on. 2013-09-06 2014-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 235-1999 "metal material thickness equal to or less than 3mm sheet and strip repeated bending test side Law ", the following main technical content has been modified. --- Modify the standard name. --- Remove the 1999 edition Chapter 2 reference standards. --- Table 1, the symbol of cylindrical roller support lever from the bottom to the top of the "h" changed to "L". In Table 1, increased the tension symbol No "T" and explained, while increasing the lever slit width of the symbol "w" and instructions. --- Table 2 have been amended and supplemented, increased support for cylindrical roller lever from the top to the bottom of the lever L and slit width w Claim. --- Sample size has been modified. --- Provisions applying tension were added. --- Modify the termination criterion of the test part. This standard uses redrafted law revision using ISO 7799. 1985 "metal material thickness equal to or less than 3mm sheet and strip Repeated bending test. " This standard and ISO 7799. 1985 technical differences and the reasons are as follows. --- Table 1, the symbol of cylindrical roller support lever from the bottom to the top of the "h" changed to "L". In Table 1, increased the tension symbol No "T" and explained, while increasing the symbol lever slit width "w" and instructions for use. --- Table 2 have been amended and supplemented, increased support for cylindrical roller lever from the top to the bottom of the lever L and slit width w Requirements for ease of use. --- Sample size has been modified in order to improve the operability of the test. --- Provisions applying tension were added in order to improve the operability of the test. --- Modify the test termination criterion in part, is determined to improve the operability. The standard proposed by China Iron and Steel Association. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Wuhan Iron and Steel (Group) Corporation, Metallurgical Industry Information Standards Institute, Shangyu Hongxing Machinery Instrument Manufacturing Co. the company. The main drafters of this standard. coating should macros, IRON Dong Li, Liu Dong, Zhang Guan, the Rencui Ying, Zhi-Yong Xiong. This standard replaces the standards previously issued as follows. --- GB/T 235-1963, GB/T 235-1982, GB/T 235-1988, GB/T 235-1999. Metallic materials - Sheet and strip - Repeated bending test method

1 Scope

This standard specifies the metal sheet and strip repeated bending test method principles, symbols, test equipment, samples, test procedures and test report. This standard applies to a thickness equal to or less than 3mm metal sheet and strip - Determination of plastic deformation repeated bending.

2 Symbols and

Symbols used in this standard and their descriptions are shown in Table 1. Table 1 Symbols and Symbol Description Unit a specimen thickness mm r cylindrical support roll radius mm L cylindrical support rollers top to bottom lever distance mm y two cylindrical support roll axis to the plane of the top surface of the clamp block distance mm w lever slit width mm T N tension Nb the number of repetitive bending times Principle 3 Repeated bending test is a rectangular cross-sectional sample of interviews with one end fixed, predetermined radius around a cylindrical support roll bending 90 °, then bent in the opposite direction Repeated bending test song, as shown in Figure 1.

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