JB/T 7293.3-2014Internal combustion engines - Bolts and nuts - Part 3: Connecting rod bolts - Metallographic examination (English PDF)
内燃机 螺栓和螺母 第3部分：连杆螺栓 金相检验
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
May 6, 2014
Implementation date
October 1, 2014
Scope
JB/T 7293.3-2014 is the English-translated version of 内燃机 螺栓和螺母 第3部分：连杆螺栓 金相检验.
JB/T 7293.3-2014 is the Chinese machinery industry standard that governs the metallographic examination of connecting rod bolts for internal combustion engines.
As Part 3 of the JB/T 7293 series on engine bolts and nuts, it sets out the technical requirements for the examination, the test methods to be followed and the rating of the resulting microstructure.
Its provisions are written for connecting rod bolts made from 40Cr, 35CrMoA and 42CrMo steel and from the grades 15MnB, 15MnVB and 20MnV. The document quotes JB/T 7293.2, and it is classified under J92 in the Chinese scheme and 27.020 internationally.
It replaces JB/T 8837-2000. Issued on 6 May 2014, it has applied since 1 October 2014.
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Document preview — JB/T 7293.3-2014
National Standard of the People's Republic of China
- ICS
- 27.020
- Replacing
- JB/T 8837-2000
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword
- Scope
- Normative references
- About this standard
- Related standards
- Classification and status
1 Foreword
JB/T 7293.3-2014 was issued by MIIT on 6 May 2014 and has been in force since 1 October 2014.
It is one of 10 parts of the JB/T 7293 series.
2 Scope
This standard is the Chinese machinery industry standard that governs the metallographic examination of connecting rod bolts for internal combustion engines. As Part 3 of the JB/T 7293 series on engine bolts and nuts, it sets out the technical requirements for the examination, the test methods to be followed and the rating of the resulting microstructure. Its provisions are written for connecting rod bolts made from 40Cr, 35CrMoA and 42CrMo steel and from the grades 15MnB, 15MnVB and 20MnV. The document quotes JB/T 7293.2, and it is classified under J92 in the Chinese scheme and 27.020 internationally. It replaces JB/T 8837-2000.
3 Normative references
JB/T 7293.3-2014 cites the following standards, which apply in full or in part through the references made to them in its clauses.
JB/T 7293.2
4 About this standard
Issued by: MIIT
English translation: about 15 pages
5 Related standards
Other parts of this standard:
JB/T 7293-1994 — Main bearing cap bolts and nuts for internal combustion engines - Technical specifications
JB/T 7293-2007 — Main bearing cap bolts and nuts - Technical requirements
JB/T 7293.1-2018 — Part 1: Main bearing lid bolts and nuts - Specification
JB/T 7293.2-2010 — Internal combustion engines-bolts and nuts - Part 2: Connecting rod bolts - Specifications
JB/T 7293.4-2010 — Part 4: Connecting rod bolts - Magnetic particle testing
JB/T 7293.5-2015 — Part 5: Cylinder head bolts - Specification
JB/T 7293.6-2015 — Part 6: Flywheel bolts - Specification
JB/T 7293.7-2015 — Part 7: Cylinder head and flywheel nuts - Specification
JB/T 7293.8-2010 — Part 8: Connecting rod nuts - Specification
6 Classification and status
International classification (ICS): 27.020
Prefix JB/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
Similar standards
Editions of JB/T 7293.3
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 7293.3-2014 | Internal combustion engines - Bolts and nuts - Part 3: Connecting rod bolts - Metallographic examination | current edition | Current |
| JB/T 8837-2000 | Internal combustion engines - Bolts and nuts - Part 3: Connecting rod bolts - Metallographic examination | previous edition | Superseded |
This page sells the current edition, JB/T 7293.3-2014. Earlier editions are listed for reference only.
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Related Standards
JB/T 7293.2-2010 — Internal combustion engines-bolts and nuts - Part 2: Connecting rod bolts - Specifications
JB/T 7293.4-2010 — Internal combustion engines - Bolts and nuts - Part 4: Connecting rod bolts - Magnetic particle testing
JB/T 7293.5-2015 — Internal combustion engines - Bolts and nuts - Part 5: Cylinder head bolts - Specification
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JB/T 7293.3-2014
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