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GB/T 34498-2017 English PDF

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GB/T 34498-2017: Tungsten cathode materials for laser lamps
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Basic data

Standard ID GB/T 34498-2017 (GB/T34498-2017)
Description (Translated English) Tungsten cathode materials for laser lamps
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H63
Classification of International Standard 77.150.99
Word Count Estimation 14,193
Date of Issue 2017-10-14
Date of Implementation 2018-05-01
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34498-2017: Tungsten cathode materials for laser lamps

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Tungsten cathode materials for laser lamps ICS 77.150.99 H63 National Standards of People's Republic of China Laser tungsten cathode material 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Nonferrous Metals Industry Association. This standard by the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized. This standard drafting unit. Beijing Mining and Metallurgy Research Institute, North Mine New Materials Technology Co., Ltd., Beijing University of Technology, Non-ferrous Metal Technology Economic Research Institute. The main drafters of this standard in the moonlight, Nie Wan Ren, Wang Lu Yan, Peng Ying, Zhang Deming, Yang Jian, Hou Yu Bo, Li Cao Bing, Cui Yuntao, Zhang Jiangfeng. Laser tungsten cathode material

1 Scope

This standard specifies the laser tungsten cathode material requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certification Book and contract (or purchase order) content. This standard applies to laser pumping tungsten cathode material, can be used in laser processing (cutting, welding, drilling, heat treatment, engraving), the power Rate laser, laser beauty lamp, and pulse sterilization lights and other fields.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 3789 (all parts) launch tube electrical performance test methods GB/T 3850 dense sintered metal materials and determination of density of cemented carbide GB/T 4197 tungsten, molybdenum and their alloys sintered billet, bar grain size test method GB/T 4324 (all parts) tungsten chemical analysis methods GB/T 19258 UV germicidal lamp GB/T 21650.1 mercury porosimetry and gas adsorption method for the determination of pore size distribution and porosity of solid materials Part 1. Mercury intrusion method GB/T 23139 pulsed xenon lamp YS/T 500 cerium - cerium alloy - Determination of amount - Redox titration YS/T 501 tungsten - thorium alloys - Determination of amount of thoria - Gravimetric method

3 requirements

3.1 product classification Tungsten cathode materials can be divided into three categories. Thorium tungsten cathode material, rare earth tungsten cathode material, tungsten barium cathode material; product grades by chemical composition WT20, WT40, WC20, WC40, WX, WBa a total of six grades. Thorium tungsten cathode material and rare earth tungsten cathode material grades that the first letter said tungsten cathode material of the main elements of tungsten, identifier The capital letter W; the second letter indicates the type of doped oxide, the identification symbol is generally the first letter of the doping element English name of the large Write, a plurality of oxides composed of a plurality of composite rare earth tungsten cathode material X; symbols in the number of tungsten cathode material doped oxide nominal containing The amount of the thousandths. Said tungsten cathode material of the main elements of tungsten, identified by the capital letter W The letters indicate the type of doped oxide, with the identifier generally being the first word of the name of the doping element Mother capital, a variety of rare earth oxides composed of multiple composite rare earth tungsten cathode material X ×× The numbers indicate the thousandth of the dopant oxide content in the tungsten cathode material φ × diameter mm length

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