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GB/T 45326-2025 English PDF

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GB/T 45326-2025: Extra coarse grain cemented carbide tips for engineering
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GB/T 45326-2025English279 Add to Cart 3 days [Need to translate] Extra coarse grain cemented carbide tips for engineering Valid GB/T 45326-2025

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Basic data

Standard ID GB/T 45326-2025 (GB/T45326-2025)
Description (Translated English) Extra coarse grain cemented carbide tips for engineering
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H72
Classification of International Standard 77.160
Word Count Estimation 14,146
Date of Issue 2025-02-28
Date of Implementation 2025-09-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 45326-2025: Extra coarse grain cemented carbide tips for 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.
GB/T 45326-2025 English version. Extra coarse grain cemented carbide tips for engineering ICS 77.160 CCSH72 National Standard of the People's Republic of China Ultra-coarse grain cemented carbide engineering gear Released on 2025-02-28 2025-09-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

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 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/TC243). This document was drafted by. Zhuzhou Cemented Carbide Group Co., Ltd., Zigong Cemented Carbide Co., Ltd., Zhuzhou Kent Cemented Carbide Co., Ltd. Co., Ltd., Zhejiang Dewei Cemented Carbide Manufacturing Co., Ltd., Zhejiang Hengcheng Cemented Carbide Co., Ltd., Zhuzhou Xinda Machinery Technology Co., Ltd. Limited company. The main drafters of this document are. Qin Wenguang, Yao Xingwang, Gong Bin, Rao Chengyi, Wu Xiang, Zhao Shengzhi, Yang Sheng, Li Ying, Wu Jianguo, Chen Min, Guo Guangfu, Guo Weibo, Huang Chun, Liu Nengwen, Huang Can. Ultra-coarse grain cemented carbide engineering gear

1 Scope

This document specifies the model designation rules and typical product models and dimensions, technical requirements, test methods, and specifications of ultra-coarse grain cemented carbide engineering gears. methods, inspection rules, marking, packaging, transportation, storage, accompanying documents and order contents. This document is applicable to ultra-coarse grained cemented carbide engineering teeth with an average grain size of tungsten carbide (WC) greater than 6.0μm in cemented carbide.

2 Normative references

The contents of the following documents constitute 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 to This document. GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on the acceptance quality limit (AQL) GB/T 3488.2-2018 Metallographic determination of cemented carbide microstructure Part 2.Measurement of WC grain size GB/T 3851-2015 Determination method for transverse rupture strength of cemented carbide GB/T 5242 Inspection rules and test methods for cemented carbide products GB/T 5243 Marking, packaging, transportation and storage of cemented carbide products

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Model designation rules and typical product models and sizes

4.1 Model designation rules The product model consists of the series type code, engineering tooth shape code, diameter code, height code, bottom chamfer angle code, bottom chamfer angle code, It is composed of height code, bottom air hole shape code and additional information code. See the examples for each component. Example. Y V30.02450-G05Q/JL ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ① Indicates series type. Y indicates engineering gear series products. ② Indicates the shape of the engineering tooth. J represents a cylindrical tooth shape, C represents a mushroom tooth shape, and V represents a conical tooth shape. ③ Indicates the major diameter (D), in millimeters, using two integers plus one decimal place. If the number is less than two integers, add "0" in front to make up for the two decimal places. ④ Indicates the minor diameter (d), in millimeters, with two integers. If it is less than two integers, add "0" in front to make up the difference. This position is omitted for cylindrical tooth shape. ⑤ Indicates height (H), in millimeters, with two integers. If it is less than two integers, add "0" in front to make up for the two digits. ⑥ represents the angle of the bottom chamfer of the engineering tooth (θ), I represents the angle with the axis line is 15°, E represents the angle with the axis line is 18°, F represents the angle with the axis line is 30°, G means the angle with the axis is 45°, and X means other angles with the axis or other bottom shapes. ⑦ It means 10 times of the actual height (h) of the bottom chamfer of the engineering tooth. If it is less than two digits, add "0" in front to make up for the two digits. ⑧ Indicates the shape of the air hole at the bottom of the engineering tooth. Q indicates a spherical hole, Z indicates a conical hole, J indicates a pointed hole, and T indicates other shapes. This position is default when there is no air hole. ⑨ Indicates additional information code, 1 to 3 characters, used when necessary, such as "JL" indicates the buyer's code.

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