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GB/T 31908-2015 English PDF

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GB/T 31908-2015: Tungsten electrodes for arc welding and plasma welding and cutting
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PDF similar to GB/T 31908-2015


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Basic data

Standard ID GB/T 31908-2015 (GB/T31908-2015)
Description (Translated English) Tungsten electrodes for arc welding and plasma welding and cutting
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H63
Classification of International Standard 77.150.99
Word Count Estimation 12,185
Date of Issue 2015-09-11
Date of Implementation 2016-06-01
Quoted Standard GB/T 4324.1; GB/T 4324.2; GB/T 4324.3; GB/T 4324.4; GB/T 4324.5; GB/T 4324.6; GB/T 4324.7; GB/T 4324.8; GB/T 4324.9; GB/T 4324.10; GB/T 4324.11; GB/T 4324.12; GB/T 4324.13; GB/T 4324.14; GB/T 4324.15; GB/T 4324.16; GB/T 4324.17; GB/T 4324.18; GB/T 4324.19; GB/T 4324.20; GB/T 4324.21; GB/T 4324.22; GB/T 4324.23; GB/T 4324.24; GB/T 4324.25; GB/T 4324.26; GB/T 4324.27; GB/T 4324.28; YS/T 500; YS/T 501
Regulation (derived from) National Standard Announcement 2015 No.25
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
Summary This Standard specifies the arc and plasma welding and cutting requirements of the tungsten electrode materials, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and purchase order (or contract) content. This Standard applies to the inert gas shielded arc welding and plasma welding, cutting, spraying, melting tungsten electrode.

GB/T 31908-2015: Tungsten electrodes for arc welding and plasma welding and cutting

---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.
Tungsten electrodes for arc welding and plasma welding and cutting ICS 77.150.99 H63 National Standards of People's Republic of China Arc welding and plasma welding, cutting with tungsten electrode Issued on. 2015-09-11 2016-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Nonferrous Metals Industry Association. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard was drafted. North Mine New Material Technology Co., Ltd., Beijing Polytechnic University, Beijing Tianlong tungsten and molybdenum Technology Co., Ltd., Shandong, China Tungsten and molybdenum Co., Ltd., Beijing General Research Institute of Mining and Metallurgy. The main drafters of this standard. in the moonlight, Nie Zuoren, Zhang Deming, Peng Ying, Wang Lu Yan, Liu Jun, Yang ginseng, Su Guoping at Aifang. Arc welding and plasma welding, cutting with tungsten electrode

1 Scope

This standard specifies the arc welding and plasma welding, cutting with tungsten electrode material requirements, test methods, inspection rules, marking, packaging, transportation Transport, storage, quality certificate and purchase order (or contract) content. This standard applies to the inert gas shielded arc welding and plasma welding, cutting, spraying, melting tungsten electrode.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 4324 (all parts), chemical analysis of tungsten YS/T 500 Determination of tungsten alloy cerium cerium oxide content reduction titration YS/T 501 tungsten alloy thorium dioxide thorium Gravimetric method

3 Requirements

3.1 Product classification and identification 3.1.1 Supply status classification Tungsten electrodes as supplied state can be divided into light and dark bar rod. rod is the use of grinding, polishing and other surface treatment, the surface is metallic luster; the black pole After the plastic processing is not subjected to surface treatment, the surface oxide layer or a graphite drawing milk and so on. 3.1.2 Classification by chemical composition Tungsten Grades by chemical composition into WP, WC20, WT10, WT20, WT30, WT40, WZ3, WZ8, WL10, WL15, WL20, WY20, WX10, WX20, WX30, WX40 total of 16 grades. Grades that way. The first letter indicates the main elements of tungsten, tungsten electrodes marked with the symbol for uppercase W; second letter indicates Doped oxide type, usually marked with the symbol doping element name initials, pure tungsten electrode free of other additives, compared with P, Multiple composite rare earth tungsten electrode more rare earth oxides of X; symbol numbers indicate the nominal content of tungsten electrodes doped oxides One thousand score. It represents a major element tungsten tungsten electrode, marked with the symbol uppercase W Letters doped oxide type, usually marked with the symbol doping element name initials, pure tungsten Electrode without other additives, compared with P, multiple composite rare earth tungsten electrode more rare earth oxides of X ×× Digital content on behalf of an oxide doped tungsten electrode thousand scores Example. Cerium tungsten electrodes WC20. Wherein W --- representatives of the main content of tungsten; C --- rare earth-doped cerium; 20 --- doping amount of rare earth oxide is about 20 ‰.

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