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GB/T 38222-2019 English PDF

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US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 38222-2019: Metallographic examination method of medium and high strength stainless steel castings for general engineering applications
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38222-2019	359	Add to Cart	4 days	Metallographic examination method of medium and high strength stainless steel castings for general engineering applications	Valid

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Basic data

Standard ID: GB/T 38222-2019 (GB/T38222-2019)
Description (Translated English): Metallographic examination method of medium and high strength stainless steel castings for general engineering applications
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J31
Classification of International Standard: 77.040.20
Word Count Estimation: 18,138
Date of Issue: 2019-10-18
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38222-2019: Metallographic examination method of medium and high strength stainless steel castings for general engineering applications

---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.
Metallographic examination method of medium and high strength stainless steel castings for general engineering applications ICS 77.040.20 J31 National Standards of People's Republic of China Medium and high strength stainless steel for engineering structures Metallographic examination of castings Published on.2019-10-18 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54). This standard was drafted. Shenyang Foundry Research Institute Co., Ltd., Lanzhou Lanshi Testing Technology Co., Ltd., Huoshan County Zhongfu Electromechanical Technology Company, National Construction Hardware Product Quality Supervision and Inspection Center (Guangdong), Ningxia Sharing Group Co., Ltd., Zhejiang Zhenxing Axiang Group Co., Ltd., Hebei Guohua Dingzhou Power Generation Co., Ltd., Qingdao Libo Auto Parts Precision Casting Co., Ltd. Drafters of this standard. Wang Zhiming, Shi Wei, Li Jinmei, Du Zhongfu, Wen Hao, Wei Chengyu, Du Jun, Li Houzhi, Zhang Jin, Xue Ruili, Luo Kun, Bai Honghua, Du Yong, Yao Shaoyong, Liu Dongxin, Chai Yefei. Medium and high strength stainless steel for engineering structures Metallographic examination of castings

1 Scope

This standard specifies the selection and preparation of metallographic test specimens for medium and high strength stainless steel castings for engineering structures, metallographic structure, martensite grade Other, δ ferrite content, non-metallic inclusion grade assessment methods and inspection reports. This standard is applicable to the metallographic examination of medium and high strength stainless steel castings for Cr-Ni-Mo series engineering structures. High-strength stainless steel castings can be referred to.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 10561-2005 Determination of non-metallic inclusions in steel - Standard s GB/T 13298 metal microstructure inspection method GB/T 15749 quantitative metallographic method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Delta ferrite Deltaferrite Crystallization occurs when liquid iron is cooled to 1538 ° C, and liquid iron is converted into high-temperature ferrite of δ-Fe. Note. δ ferrite is used as high-temperature ferrite. In medium and high-strength stainless steel, since a small amount of carbon and a large amount of alloying elements have a great influence on the high temperature equilibrium, the room temperature is obtained. To save.

4 Sample selection and preparation

4.1 The metallographic specimens are taken on the casting test block of the casting or casting, and can also be inspected directly on the casting. 4.2 The preparation method of the metallographic sample shall be carried out in accordance with the provisions of GB/T 13298. During the process of intercepting and preparing the sample, the tissue shall be prevented from changing. Before the sample surface is etched, the surface should be clean and free from scratches and polishing defects. 4.3 The area of the test surface of the sample shall be not less than 100mm2. When the inspection area of a single sample is less than 100mm2, the number of samples shall be increased. When the sample size is large, it is allowed to be divided into several pieces, but it is still regarded as a piece of sample. 4.4 The martensite grade, delta ferrite content and non-metallic inclusion content in the metallographic structure of the casting can be carried out separately on the same sample. test. 4.5 Etch. It is recommended to use picric acid 1g hydrochloric acid 5mL absolute ethanol 95mL, ferric chloride (FeCl3·6H2O) 2g~5g Hydrochloric acid 5 mL of absolute ethanol 100 mL and ferric chloride (FeCl3·6H2O) 5 g hydrochloric acid 50 mL of water 100 mL. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 38222-2019_English be delivered?

Answer: Upon your order, we will start to translate GB/T 38222-2019_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 38222-2019_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 38222-2019_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+ countries

Question 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 Sales@ChineseStandard.net. 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.