JB/T 9769.2-2010Internal combustion engines - Cast iron valve seat inserts - Part 2: Metallographic examination (English PDF)
内燃机 铸铁气门座 第2部分：金相检验
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
February 11, 2010
Implementation date
July 1, 2010
Scope
JB/T 9769.2-2010 is the English-translated version of 内燃机 铸铁气门座 第2部分：金相检验.
JB/T 9769.2-2010 is the second part of a recommended Chinese machinery industry standard on the cast iron valve seats of internal combustion engines, and it is given over to metallographic examination.
It fixes the technical requirements for the microstructure of the intake and exhaust valve seats of reciprocating piston internal combustion engines with a cylinder diameter of 200 mm or less, together with the test methods and the assessment.
It applies to the examination of the microstructure of cast iron valve seat insert materials, and materials of the same type may also follow it. The part carries Chinese classification J93 and international classification 27.020, and it cites GB/T 7216.
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Document preview — JB/T 9769.2-2010
National Standard of the People's Republic of China
- ICS
- 27.020
- Replacing
- JB/T 8893-1999
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 9769.2-2010 was issued by MIIT on 11 February 2010 and has been in force since 1 July 2010.
It is one of 4 parts of the JB/T 9769 series.
2 Scope
This standard is the second part of a recommended Chinese machinery industry standard on the cast iron valve seats of internal combustion engines, and it is given over to metallographic examination. It fixes the technical requirements for the microstructure of the intake and exhaust valve seats of reciprocating piston internal combustion engines with a cylinder diameter of 200 mm or less, together with the test methods and the assessment. It applies to the examination of the microstructure of cast iron valve seat insert materials, and materials of the same type may also follow it. The part carries Chinese classification J93 and international classification 27.020, and it cites GB/T 7216.
3 Normative references
JB/T 9769.2-2010 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB/T 7216
4 About this standard
Issued by: MIIT
English translation: about 15 pages
5 Related standards
Other parts of this standard:
JB/T 9769-1999 — Valve seat inserts - Technical requirements
JB/T 9769.1-2010 — Part 1: Technical requirements
JB/T 9769.1-2020 — Part 1: Technical requirements
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 9769.2
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 9769.2-2010 | Internal combustion engines - Cast iron valve seat inserts - Part 2: Metallographic examination | current edition | Current |
| JB/T 8893-1999 | Internal combustion engines - Cast iron valve seat inserts - Part 2: Metallographic examination | previous edition | Superseded |
This page sells the current edition, JB/T 9769.2-2010. Earlier editions are listed for reference only.
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Related Standards
GB/T 7216-2023 — Metallographic test for grey cast iron
JB/T 9769.1-2010 — Internal combustion engines - Cast iron valve seat inserts - Part 1: Technical requirements
JB/T 9769.1-2020 — Internal combustion engines - Cast iron valve seat inserts - Part 1: Technical requirements
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JB/T 9769.2-2010
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