|
US$459.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 26656-2023: Metallographic test for compacted (vermicular) graphite cast irons
Status: Valid GB/T 26656: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 26656-2023 | English | 459 |
Add to Cart
|
4 days [Need to translate]
|
Metallographic test for compacted (vermicular) graphite cast irons
| Valid |
GB/T 26656-2023
|
| GB/T 26656-2011 | English | 759 |
Add to Cart
|
4 days [Need to translate]
|
Metallographic test for compacted (vermicular) graphite cast irons
| Obsolete |
GB/T 26656-2011
|
PDF similar to GB/T 26656-2023
Basic data | Standard ID | GB/T 26656-2023 (GB/T26656-2023) | | Description (Translated English) | Metallographic test for compacted (vermicular) graphite cast irons | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J31 | | Classification of International Standard | 77.080.10 | | Word Count Estimation | 22,229 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-05-23 | | Older Standard (superseded by this standard) | GB/T 26656-2011 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 26656-2023: Metallographic test for compacted (vermicular) graphite cast irons---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 77:080:10
CCSJ31
National Standards of People's Republic of China
Replacing GB/T 26656-2011
Metallographic examination of vermicular graphite cast iron
Released on 2023-05-23
2023-05-23 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Preparation of metallographic samples 1
5 Inspection Items and Rating 1
Appendix A (Informative) Graphite Classification 10
Appendix B (Informative) Morphology of Vermicular Graphite 12
Appendix C (informative) Determination of creep rate of vermicular graphite cast iron 16
Reference 18
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
This document replaces GB/T 26656-2011 "Metallographic Examination of Vermicular Graphite Cast Iron": Compared with GB/T 26656-2011, except for structural adjustment and
Apart from editorial changes, the main technical changes are as follows:
a) The scope of application has been changed (see Chapter 1, Chapter 1 of the:2011 edition);
b) Added the terms and definitions of "maximum Fred's circle diameter" and "particle roundness" (see 3:1, 3:2);
c) The calculation formula of creep rate has been changed (see 5:1:2, 4:1:2 of the:2011 edition);
d) Changed the expression method of creep rate value range, and replaced the creep rate classification diagram (see 5:1:4, 4:1:6 of the:2011 edition);
e) Changed the expression method of pearlite content and the corresponding pearlite content grading evaluation reference map (see 5:2,:2011 edition
4:2:2);
f) Changed the expression method of phosphorus eutectic content and the corresponding phosphorus eutectic content grading evaluation reference map (see 5:3,:2011 edition
4:3:2);
g) Changed the representation method of carbide content and the corresponding carbide content grading and evaluation reference map (see 5:4,:2011 edition
4:4:2):
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54):
This document was drafted by: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co:, Ltd:, Weichai Power Co:, Ltd:, Liyang Xinli
Machinery Casting Co:, Ltd:, Guangxi Yuchai Machinery Parts Manufacturing Co:, Ltd:, Midea Group Co:, Ltd:, Zhejiang Weishang Machinery Co:, Ltd:,
Shandong Longji Machinery Co:, Ltd:, Xixia County Internal Combustion Engine Inlet and Exhaust Pipe Co:, Ltd:, Shanxi Sanlian Sunco Auto Parts Co:, Ltd:,
Hebei Andy Mold Co:, Ltd:, Xixia County Zhongde Auto Parts Co:, Ltd:, Zhejiang Mechanical and Electrical Vocational Technical College, Jiangsu Kite Auto Parts Co:, Ltd:
Co:, Ltd:, Wuhu Xinxing Casting Pipe Co:, Ltd:, Xinxing Casting Pipe Co:, Ltd:, Hohai University, Yantai City Standard Metrology Inspection and Testing
Xin, Xiangyang Jinnaite Machinery Co:, Ltd:, Tongyu Heavy Industry Co:, Ltd:, Shanghai Volkswagen Automobile Co:, Ltd:, Shandong Huijin Co:, Ltd:
Company, Penglai Sanhe Casting Co:, Ltd:, Liaocheng Xinluo Machinery Co:, Ltd:, Shanghai Gongwu High-tech Industry Development Co:, Ltd:, Luoyang Gucheng Machinery Co:, Ltd:
Machinery Co:, Ltd:, Guangdong Jinzhili Technology Co:, Ltd:, and Guizhou Provincial Building Materials Product Quality Inspection and Testing Institute:
The main drafters of this document: Li Pingping, Deng Han, Lu Wenting, Chen Kaimin, Wang Zehua, Jiang Ailong, Wu Qihua, Wu Baocheng, Zhang Qiang, Shi Longhua,
Li Shengzhu, Mu Yanqing, Yu Guangyuan, Dong Peng, Pan Anxia, Chen Xinhua, Chen Yongfeng, Chen Jianhua, Qian Feng, Yao Junhong, Ruan Fang, Sun Zhenguo, Liu Yuli,
Zhou Kangkang, Cheng Haochuan, Yang Shuangjie, Zhang Xuejun, Zhang Guixian, Cui Lanfang, Ren Huawei, Shuai Dejun, Ruan Jiangang, Zhang Jie, Zhang Wenwei, Liu Honglei,
Tian Zhongqing, Li Ping, Tian Zheng, Huang Liankai, Li Jianbo, Wang Lilin, Feng Jiabo, Ren Xianwei, Qin Yanping, Xu Dean:
This document was first published in:2011, and this is the first revision:
Metallographic examination of vermicular graphite cast iron
1 Scope
This document specifies the preparation, inspection items and rating of metallographic specimens of vermicular graphite cast iron:
This document is applicable to the identification of graphite morphology of sand-cast vermicular graphite cast iron, as well as the vermicularization rate, pearlite, phosphorus eutectic and carbide quantity and distribution:
level assessment:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 13298 Metal Microstructure Examination Method
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1
Maximum Féret diameter maximum Féretdiameter
lm
The maximum linear distance between any two points on the outer contour of graphite particles:
3:2
particle roundness particleroundness
The area of a graphite particle divided by the circle area of the largest Fred's circle diameter of the graphite particle:
4 Preparation of metallographic samples
4:1 The metallographic sample should be taken from the test block or casting, and the testing surface should avoid the casting surface:
4:2 The metallographic sample shall be prepared according to the provisions of GB/T 13298: During the process of intercepting and preparing the metallographic sample, it shall prevent the organization from changing and graphite peeling off:
The surface of the sample should be smooth and clean, and there should be no coarse scratches:
5 Inspection items and ratings
5:1 Classification and evaluation of creep rate
5:1:1 Graphite Morphology
Graphite form is divided into six categories, see Appendix A:
The morphology of graphite in vermicular graphite cast iron is mainly vermicular graphite (type III), and a small amount of spherical (group) graphite (type V, type VI) and group flocculent graphite:
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 26656-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 26656-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 26656-2023_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 26656-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 26656-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 26656-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|