2023-9-23 3.214.184.223
Code of China Chinese Classification Professional Classification ICS Classification Latest News Value-added Services

Position: Chinese Standard in English/GB/T 11354-2005
GB/T 11354-2005   Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts (English Version)
Standard No.: GB/T 11354-2005 Status:valid remind me the status change

Email:

Language:English File Format:PDF
Word Count: 8000 words Price(USD):160.0 remind me the price change

Email:

Implemented on:2006-1-1 Delivery: via email in 1 business day
,,
Standard No.: GB/T 11354-2005
English Name: Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts
Chinese Name: 钢铁零件渗氮层深度测定和金相组织检验
Chinese Classification: J36    Heat treatment
Professional Classification: GB    National Standard
Issued by: AQSIQ, SAC
Issued on: 2005-7-21
Implemented on: 2006-1-1
Status: valid
Superseding:GB/T 11354-1989 Steel-iron parts-Determination of nitrided case depth and metallographic examination of nitriding structure
Language: English
File Format: PDF
Word Count: 8000 words
Price(USD): 160.0
Delivery: via email in 1 business day
Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts 1 Scope This standard specifies the method for determination of nitrided case depth and metallographic microstructure examination before and after nitriding and relevant technical requirements of steel and iron parts. This standard is applicable to the determination and evaluation of the depth, brittleness and porosity of nitrided case and nervation and wave like nitride on the surface of steel and iron parts after gas nitriding, ion nitriding and nitrocarburizing. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 7232 Terminology of metal heat treatment GB/T 9450 Steels - Determination and verification of the depth of carburized and hardened cases (ISO 2639: 2002, MOD) GB/T 9451 Determination of total or effective thickness of thin surface hardened layers of steel parts (ISO 4970: 1979 MOD) 3 Terms and definitions For the purposes of this standard, the terms and definitions given in GB/T 7232 and the following apply. 3.1 prior metallographic structure (original structure) metallographic structure of the workpiece before nitriding 3.2 brittleness of nitrided case degree of fracture of Vickers hardness indentation at edges and corners on the surface of nitrided parts under a certain test force 3.3 porosity of nitrided case density of micropores in compounds on the surface of nitrided parts 3.4 nervation and wave like nitride nervation and wave like nitride in the diffusion layer of nitrided parts, which runs parallel to the surface 4 Prior metallographic structure examination For nitrided parts with different service conditions and different nitrided steels, different pre-heating treatments may be adopted before nitriding to obtain corresponding prior metallographic structure. 4.1 Grading of prior metallographic structure before nitriding The grade of prior metallographic structure of quenched and tempered steel before nitriding may be classified into five grades according to the percentage of free ferrite in sorbite, as shown in Table 1 and Figure 1. 4.2 Examination method and requirements of prior metallographic structure The prior metallographic structure is examined before nitriding (large workpieces may be examined within 2mm depth of the surface), magnified by 500 times under the microscope, and evaluated with reference to the prior metallographic structure grade diagram. Generally, parts of Grades 1 to 3 are qualified, and important parts of Grades 1 to 2 are qualified. The working face of nitrided workpiece is not allowed to have decarburized case or coarse sorbite structure. Table 1 Grade of prior metallographic structure before nitriding and its description
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Prior metallographic structure examination 5 Specimen conditions 6 Method for determination of nitrided case depth 7 Examination of nitrided case brittleness 8 Examination of porosity of nitrided case 9 Examination of nitride in nitrided case 10 Examination report Annex A (Informative) Recommended erosion agents Annex B (Informative) Partial test data
Referred in GB/T 11354-2005:
*GB/T 7232-2012 Terminology of metal heat treatment
*GB/T 9450-2005 Steels—Determination and verification of the depth of carburized and hardened cases
*GB/T 9451-2005 Determination of total or effective thickness of thin surface hardened layers of steel parts
GB/T 11354-2005 is referred in:
* JB/T 6012.2-2008 Internal combustion engines-Intake and exhaust valves-Part 2:Metallographic inspections
*QC/T 481-2005 Specifications of crankshaft for vehicle engine
*GB/T 35060.2-2018 General specification of shearer--Part 2: Cutting transmission unit
*GB/T 35060.3-2018 General specification of shearer--Part 3: Haulage driving unit
*GB/T 34883-2017 Ion nitriding
*JB/T 8415-2011 Internal combustion engines — Timing gears — Specifications
*GB/T 32541-2016 Quality control system for heat treatment
*GB/T 12143-2008 General analytical methods for beverage
Code of China
Standard
GB/T 11354-2005  Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts (English Version)
Standard No.GB/T 11354-2005
Statusvalid
LanguageEnglish
File FormatPDF
Word Count8000 words
Price(USD)160.0
Implemented on2006-1-1
Deliveryvia email in 1 business day
Detail of GB/T 11354-2005
Standard No.
GB/T 11354-2005
English Name
Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts
Chinese Name
钢铁零件渗氮层深度测定和金相组织检验
Chinese Classification
J36
Professional Classification
GB
ICS Classification
Issued by
AQSIQ, SAC
Issued on
2005-7-21
Implemented on
2006-1-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 11354-1989 Steel-iron parts-Determination of nitrided case depth and metallographic examination of nitriding structure
Language
English
File Format
PDF
Word Count
8000 words
Price(USD)
160.0
Keywords
GB/T 11354-2005, GB 11354-2005, GBT 11354-2005, GB/T11354-2005, GB/T 11354, GB/T11354, GB11354-2005, GB 11354, GB11354, GBT11354-2005, GBT 11354, GBT11354
Introduction of GB/T 11354-2005
Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts 1 Scope This standard specifies the method for determination of nitrided case depth and metallographic microstructure examination before and after nitriding and relevant technical requirements of steel and iron parts. This standard is applicable to the determination and evaluation of the depth, brittleness and porosity of nitrided case and nervation and wave like nitride on the surface of steel and iron parts after gas nitriding, ion nitriding and nitrocarburizing. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 7232 Terminology of metal heat treatment GB/T 9450 Steels - Determination and verification of the depth of carburized and hardened cases (ISO 2639: 2002, MOD) GB/T 9451 Determination of total or effective thickness of thin surface hardened layers of steel parts (ISO 4970: 1979 MOD) 3 Terms and definitions For the purposes of this standard, the terms and definitions given in GB/T 7232 and the following apply. 3.1 prior metallographic structure (original structure) metallographic structure of the workpiece before nitriding 3.2 brittleness of nitrided case degree of fracture of Vickers hardness indentation at edges and corners on the surface of nitrided parts under a certain test force 3.3 porosity of nitrided case density of micropores in compounds on the surface of nitrided parts 3.4 nervation and wave like nitride nervation and wave like nitride in the diffusion layer of nitrided parts, which runs parallel to the surface 4 Prior metallographic structure examination For nitrided parts with different service conditions and different nitrided steels, different pre-heating treatments may be adopted before nitriding to obtain corresponding prior metallographic structure. 4.1 Grading of prior metallographic structure before nitriding The grade of prior metallographic structure of quenched and tempered steel before nitriding may be classified into five grades according to the percentage of free ferrite in sorbite, as shown in Table 1 and Figure 1. 4.2 Examination method and requirements of prior metallographic structure The prior metallographic structure is examined before nitriding (large workpieces may be examined within 2mm depth of the surface), magnified by 500 times under the microscope, and evaluated with reference to the prior metallographic structure grade diagram. Generally, parts of Grades 1 to 3 are qualified, and important parts of Grades 1 to 2 are qualified. The working face of nitrided workpiece is not allowed to have decarburized case or coarse sorbite structure. Table 1 Grade of prior metallographic structure before nitriding and its description
Contents of GB/T 11354-2005
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Prior metallographic structure examination 5 Specimen conditions 6 Method for determination of nitrided case depth 7 Examination of nitrided case brittleness 8 Examination of porosity of nitrided case 9 Examination of nitride in nitrided case 10 Examination report Annex A (Informative) Recommended erosion agents Annex B (Informative) Partial test data
About Us   |    Contact Us   |    Terms of Service   |    Privacy   |    Cancellation & Refund Policy   |    Payment
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886
Copyright: TransForyou Co., Ltd. 2008-2040
 
 
Keywords:
GB/T 11354-2005, GB 11354-2005, GBT 11354-2005, GB/T11354-2005, GB/T 11354, GB/T11354, GB11354-2005, GB 11354, GB11354, GBT11354-2005, GBT 11354, GBT11354