GB/T 18376.2-2024 English PDFUS$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 18376.2-2024: Grades of cemented carbide - Part 2: Grades of cemented carbide for rock drilling and engineering Status: Valid GB/T 18376.2: Historical versions
Basic dataStandard ID: GB/T 18376.2-2024 (GB/T18376.2-2024)Description (Translated English): Grades of cemented carbide - Part 2: Grades of cemented carbide for rock drilling and engineering Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H70 Classification of International Standard: 77.160 Word Count Estimation: 10,124 Date of Issue: 2024-11-28 Date of Implementation: 2025-06-01 Older Standard (superseded by this standard): GB/T 18376.2-2014 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 18376.2-2024: Grades of cemented carbide - Part 2: Grades of cemented carbide for rock drilling and engineering---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. Grades of cemented carbide - Part 2.Grades of cemented carbide for rock drilling and engineering Carbide Grade Part 2.Cemented carbide grades for rock drilling and engineering Grades of cemented carbide- Part 2.Grades of cemented carbide for rock drilling and engineering ICS 77.160 CCS H 70 National Standard of the People's Republic of China Replaces GB/T 18376.2-2014 Released on 2024-11-28 2025-06-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface ... Ⅲ Introduction ... Ⅳ 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions ... 1 4 Brand designation rules and classification codes ... 1 4.1 Brand designation rules ... 1 4.2 Classification code ... 1 5 Technical requirements ... 2 5.1 Chemical composition, physical and mechanical properties 2 5.2 Metallographic structure ... 3 5.3 Extreme difference in physical and mechanical properties of cemented carbide of the same grade ... 3 6 Test methods and inspection rules ... 4 7 Typical values of cemented carbide grades ... 4ForewordThis 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 is required. This document is Part 2 of GB/T 18376 Cemented Carbide Grades. GB/T 18376 has published the following parts. Part 1.Cemented carbide grades for cutting tools; Part 2.Cemented carbide grades for rock drilling and engineering purposes; Part 3.Cemented carbide grades for wear resistant parts. - This document replaces GB/T 18376.2-2014 "Cemented carbide grades Part 2.Cemented carbide grades for geological and mining tools" Compared with GB/T 18376.2-2014, in addition to structural adjustments and editorial changes, the main technical changes are as follows. The classification of cemented carbide grades for rock drilling and engineering has been changed (see 4.2, 2.2 of the.2014 edition); a) Increased density requirements (see 5.1); b) The mechanical property requirements have been changed (see 5.1, 2.3 of the.2014 edition); c) The requirements for metallographic structure have been changed (see 5.2, 2.4 of the.2014 edition); d) Added the extreme difference requirements of physical and mechanical properties of cemented carbide of the same grade (see 5.3); e) Added test methods and inspection rules (see Chapter 6); f) Added typical values for cemented carbide grades for rock drilling and engineering (see Chapter 7); g) The recommended working conditions (see Chapter 3 of the.2014 edition) have been deleted. h) Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Nonferrous Metals Industry Association. This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243). This document was drafted by. Zhuzhou Cemented Carbide Group Co., Ltd., Xiamen Jinlu Special Alloy Co., Ltd., Zigong Cemented Carbide Co., Ltd. Ren Company, Zhuzhou Kent Cemented Carbide Co., Ltd., Zhejiang Dewei Cemented Carbide Manufacturing Co., Ltd., Kunshan Changying Hard Materials Technology Co., Ltd. LIMITED. The main drafters of this document are. Yao Xingwang, Gong Bin, Rao Chengyi, Zhao Shengzhi, Liu Tiemei, Xie Haiwei, Zhang Xiaobao, Yang Sheng, Zhu Ronghua, Li Ying, Wu Jianguo, Chen Min, Xie Junjie, Huang Qijun, and Chen Lixing. This document was first published in.2001, revised for the first time in.2014, and this is the second revision.IntroductionCemented carbide is based on refractory metal hard compounds (hard phase or ceramic phase), with metal as binder (metal phase), powder The high hardness and high wear resistance material manufactured by the final metallurgical method is also called metal ceramic material. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, and low thermal expansion coefficient. Its properties, especially high hardness and wear resistance, remain basically unchanged even at a temperature of 500°C, and it still has a high hardness at 1 000°C. Due to the above characteristics, cemented carbide is commonly known as the "teeth of industry" and is widely used as cutting tools, impact tools, wear-resistant and corrosion-resistant parts, etc. It plays an important role in cutting, geological exploration, mining, oil drilling, mold manufacturing, etc. GB/T 18376 Hard Alloy Grades" aims to establish a complete set of cemented carbide grade standards, consisting of three parts. Part 1.Cemented carbide grades for cutting tools; Part 2.Cemented carbide grades for rock drilling and engineering purposes; Part 3.Cemented carbide grades for wear resistant parts. - Cemented carbide for rock drilling and engineering is an important application field of cemented carbide products. Due to the large market demand, its quality level is particularly The market is concerned about it. Due to its special working characteristics, the product is required to have higher impact toughness and strength. With the development of technology, the quality control level is constantly improving, and the application field of products is constantly expanding, it is necessary to revise and improve GB/T 18376.2 to guide the hard Standardization and high-quality development of the high-quality alloy industry. Carbide Grade Part 2.Cemented carbide grades for rock drilling and engineering1 ScopeThis document specifies the representation rules and classification codes, technical requirements, test methods and inspection specifications for cemented carbide grades for rock drilling and engineering. Typical values for materials. This document applies to cemented carbide grades for rock drilling and engineering applications.2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 3851-2015 Determination method for transverse rupture strength of cemented carbide GB/T 5242 Inspection rules and test methods for cemented carbide products3 Terms and definitionsThere are no terms or definitions that require definition in this document. 4.Brand designation rules and classification codes 4.1 Brand designation rules The grades of cemented carbide for rock drilling and engineering use are composed of characteristic code G, classification code (see Table 1), grouping code (see Table 2, using 05, 10, 20 two-digit group indicates that, if necessary, an intermediate supplementary group number can be inserted between two group numbers, represented by 15, 25, 35 subdivision code (used when necessary, with no more than 3 characters, the first character is an uppercase English letter, followed by Arabic numerals 1～99), as shown below. Example 1. The cemented carbide grade classified as cemented carbide for rock drilling bits and grouped as 10 is marked as. GA10. Example 2. Cemented carbide grades classified as cemented carbide for rock drill bits and grouped as 10, when the chemical composition is different from GA10, are marked as. GA10A. 4.2 Classification code The classification codes of cemented carbide grades for rock drilling and engineering are shown in Table 1. Table 1 Classification code Classification and code of cemented carbide grades for rock drilling and engineering Cemented Carbide A for Rock Drill Bits Cemented Carbide C for Coal Cutting Teeth Cemented Carbide D for Mining Drill Bits ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 18376.2-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 18376.2-2024_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 18376.2-2024_English with my colleagues?Answer: Yes. 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Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18376.2-2024 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. |
