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GB/T 9095-2008 English PDF

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GB/T 9095-2008: Sintered ferrous materials, carburized or carbonitrided -- Determination and verification of case-hardening depth
Status: Valid

GB/T 9095: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 9095-2008English134 Add to Cart 3 days [Need to translate] Sintered ferrous materials, carburized or carbonitrided -- Determination and verification of case-hardening depth Valid GB/T 9095-2008
GB/T 9095-1988English239 Add to Cart 2 days [Need to translate] Measurement on the carburizing or nitro-caburizing harden case depth of sintering iron-based material Obsolete GB/T 9095-1988

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Basic data

Standard ID GB/T 9095-2008 (GB/T9095-2008)
Description (Translated English) Sintered ferrous materials, carburized or carbonitrided -- Determination and verification of case-hardening depth
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H72
Classification of International Standard 77.040.20
Word Count Estimation 7,747
Date of Issue 2008-08-11
Date of Implementation 2009-02-01
Older Standard (superseded by this standard) GB/T 9095-1988
Quoted Standard ISO 4498: 2005
Adopted Standard ISO 4507-2000, IDT
Regulation (derived from) National Standard Approval Announcement 2008 No.14 (Total No.127)
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 method for determining the depth of the hardened layer sintered iron-based material carburizing or carbonitriding with micro-hardness test. This standard applies to quench the iron-based sintered material.

GB/T 9095-2008: Sintered ferrous materials, carburized or carbonitrided -- Determination and verification of case-hardening depth


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Sintered ferrous materials, carburized or carbonitrided. Determination and verification of case-harding depth ICS 77.040.20 H72 National Standards of People's Republic of China GB/T 9095-2008/ISO 4507.2000 Replacing GB/T 9095-1988 Sintered ferrous materials, carburized or Determination of the depth of hardened layer carbonitriding and verification (ISO 4507.2000, Sinteredferrousmaterials, ofcase-hardingdepthbyamicro-hardnesstest, IDT) Posted 2009-02-01 2008-08-11 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is equivalent to international standards ISO 4507.2000 "carburizing or carbonitriding iron-based sintered material was measured by a micro hardness test Effective hardened layer depth and test methods for verification "(in English). This standard and ISO 4507.2000 technical differences and editorial changes as follows. --- Remove the ISO 4507.2000 in the preface. This standard replaces GB/T 9095-1988 "Sintered ferrous materials, carburizing or carbonitriding determine the depth of hardened layer." This standard is proposed and managed by China Machinery Industry Federation. This standard was drafted. TONGMUO New Materials Group Co., Ltd., Beijing University of Technology. The main drafters of this standard. Shenzhou Jiang Su Xuekuan, NIE Zuo Ren, Cao Yang, Mu wen THE ACADEMY. This standard replaces the standards previously issued as follows. --- GB/T 9095-1988. GB/T 9095-2008/ISO 4507.2000 Sintered ferrous materials, carburized or Determination of the depth of hardened layer carbonitriding and verification

1 Scope

This standard specifies the method for determining the depth of hardened layer Sintered ferrous materials, carburizing or carbonitriding with micro hardness testing method. This standard applies to quenched iron-based sintered material.

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. ISO 4498.2005 Sintered metal carbide material does not include the determination of apparent hardness and microhardness

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 CHD CHD represents hardened layer from the surface to a predetermined value and a considerable distance from the point of hardness. Rule 4 Step 2 according to ISO 4498, Test Method for Determination of Vickers hardness. It is measured in a cross section perpendicular to the surface of conduct, as The distance from the surface hardness of the curve, to determine the hardened layer depth (Method A) by the graphic method. Read from a predetermined curve of hardness values Corresponding to the depth of hardened layer, the hardness value is usually prescribed 550HV0.1. Other interested parties may agree on the hardness value as specified value, the specified value use the tag HG (indicated value), said to distinguish the standard value. The standard refers to HG 550HV0.1 predetermined value (which is the standard value), with the value calibrated hardened layer depth. A method can be simplified for the rapid detection method (Method B). In Method B, for the known approximate depth of hardened layer on both sides of the appropriate two Positions hardness measurements confirm hardening depth by interpolation.

5 Test Instruments

5.1 micro Vickers hardness tester The specified test load 0.9807N (HV0.1), with an accuracy of ± 1%. 5.2 Testing Instrument Indentation diagonal length measuring microscope scale value accuracy ± 0.5μm.

6 Methods

6.1 General When the hardness measured by the relevant parties agree to select the determined location, hardness measurement surface should be perpendicular to the surface of the sample cross section. use Vickers diamond indenter test load 0.9807N (HV0.1). GB/T 9095-2008/ISO 4507.2000

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