GB/T 42275-2022 English PDF

US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42275-2022: Hardmetals - Determination of total carbon content - High frequency combustion infrared absorption or thermal conductivity method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42275-2022	199	Add to Cart	3 days	Hardmetals - Determination of total carbon content - High frequency combustion infrared absorption or thermal conductivity method	Valid

Similar standards

GB/T 42515   GB/T 42511   GB/T 41704   GB/T 19396   GB/T 45330   

Basic data

Standard ID: GB/T 42275-2022 (GB/T42275-2022)
Description (Translated English): Hardmetals - Determination of total carbon content - High frequency combustion infrared absorption or thermal conductivity method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H16
Classification of International Standard: 77.160
Word Count Estimation: 10,147
Date of Issue: 2022-12-30
Date of Implementation: 2023-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42275-2022: Hardmetals - Determination of total carbon content - High frequency combustion infrared absorption or thermal conductivity method

---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 77.160 CCSH16 National Standards of People's Republic of China Determination of total carbon content of cemented carbide High-frequency combustion infrared absorption method/thermal conductivity method Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

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. 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 by China Nonferrous Metals Industry Association. This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243). This document is drafted by. Chongyi Zhangyuan Tungsten Industry Co., Ltd., Guangdong Academy of Sciences Industrial Analysis and Testing Center, Nanchang Cemented Carbide Co., Ltd. Co., Ltd., Shenzhen Zhucheng Technology Co., Ltd., National Standard (Beijing) Inspection and Certification Co., Ltd., Central South University, Jiangsu Wellari New Materials Material Technology Co., Ltd., Guangxi Zhuang Autonomous Region Analysis and Testing Research Center. The main drafters of this document. Zhong Zhiqiang, Xu Guozuan, Chen Bangming, Yang Chenghui, Zhuang Aichun, Chen Xiaodong, Zhang Fang, Wu Aihua, Zhang Yue, Zhou Yonggui, Wang Changhua, Jia Guobin, Fu Pengfei, Zheng Lingzhi, Zeng Jie, Jiang Baolin, Tang Yueyue, Huang Diangui, Huang Yifan. Determination of total carbon content of cemented carbide High-frequency combustion infrared absorption method/thermal conductivity method

1 Scope

This document describes a method for the determination of the total carbon content of refractory metal carbides and cemented carbides used as cemented carbide raw materials. This document is applicable to carbides and complex carbides of refractory metals such as tungsten, tantalum, niobium, chromium, vanadium, titanium, etc., and the mixture of carbides and bonding metals Determination of total carbon content in mixtures (without forming agent) and pre-sintered or sintered cemented carbide produced from these mixtures, the determination range (mass Quantity fraction) is 4.00%~20.00%.

2 Normative references

This document has no normative references.

3 Terms and Definitions

This document does not have terms and definitions that need to be defined.

4 principles

The sample is heated and burned in the oxygen flow of the high-frequency induction furnace, and the generated carbon dioxide is carried by the oxygen to the infrared detection cell or thermal conductivity detection In the cell, the computer system calculates the carbon content according to the quality of the sample and the signal of the detection cell.

5 Reagents or Materials

5.1 Tungsten flux. the purity is greater than 99.8%, and the carbon content (mass fraction) is not greater than 0.0005%. 5.2 Copper flux. the purity is greater than 99.8%, and the carbon content (mass fraction) is not greater than 0.0009%. 5.3 Iron flux. the purity is greater than 99.8%, and the carbon content (mass fraction) is not greater than 0.0005%. 5.4 Standard substance. a certified series of standard samples or other applicable standard samples with a carbon content similar to that of the sample to be tested. 5.5 Oxygen. the purity (volume fraction) is not less than 99.5%. 5.6 Carbon-sulfur ceramic crucible. burn at 1100°C for at least 2 hours until the carbon blank value is constant, and store it in a desiccator after cooling.

6 Instruments and equipment

High-frequency induction carbon determination instrument. including high-frequency induction furnace, purification furnace, catalytic furnace, carbon dioxide infrared detection pool or thermal conductivity detection pool, computer and software control system. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42275-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42275-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42275-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42275-2022_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.