JB/T 12138-2015Large ring forgings for the wind tower flange - Technical specification (English PDF)
风塔法兰大型环锻件 技术条件
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
April 30, 2015
Implementation date
October 1, 2015
Scope
JB/T 12138-2015 is the English-translated version of 风塔法兰大型环锻件 技术条件.
JB/T 12138-2015 is the Chinese machinery industry standard covering large ring forgings for the wind tower flange - Technical specification. It was issued on 30 April 2015 and has been in force since 1 October 2015, as a first edition.
The document is under the responsibility of the Ministry of Industry and Information Technology. This page is published from the official record of the 2015 edition.
The figures, limits and tables the standard contains are those of the document itself, delivered in full with the English translation.
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Document preview — JB/T 12138-2015
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- 1 Scope
- 2 Normative references
- 3 Order requirements
- 4 Manufacturing process
- 4.1 Melting method
- 4.2 Cropping of the ingot
- 4.3 Forging
- 4.4 Heat treatment
- 4.5 Machining
- 5 Technical requirements
- 5.1 Chemical composition
- 5.2 Mechanical properties
- 5.3 Surface quality
- 5.4 Metallographic structure
- 5.5 Non-destructive testing
- 6 Inspection rules and test methods
- 6.1 Chemical composition analysis
- 6.2 Mechanical property test
- 6.3 Inspection of the surface quality
- 6.4 Metallographic structure
- 6.5 Non-destructive testing
- 6.6 Retest
- 6.7 Re-heat treatment
- 6.8 Type inspection
- 7 Quality certificate
- 8 Marking, packaging and transport
- 8.1 Marking
- 8.2 Packaging and transport
- Figure 1 Sampling position diagram
- Table 1 Chemical composition
- Table 2 Mechanical properties of the forging
- Table 3 Properties in the thickness direction (Z direction)
- Table 4 Non-metallic inclusion rating of the forging
- Table 5 Macrostructure defect rating of the forging
Document data
International classification (ICS): 77.140.85.
Chinese classification (CCS): J32.
Estimated length of the Chinese original: 10,158 words.
3 Order requirements
4 Manufacturing process
5 Technical requirements
6 Inspection rules and test methods
7 Quality certificate
8 Marking, packaging and transport
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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