New materials zirconium tungsten electrode metal welding materials technology invention relates to the field . One kind of zirconium tungsten electrode , new materials, whose main ingredient is a constituent element of the entire content of 98 to 98.8 % of the tungsten, 0.91 to 1.2% zirconium . The invention belongs to metal welding materials technology category.

Currently in the arc welding , plasma welding thoriated tungsten alloy commonly used in the electrode material . Performance has improved in recent years has adopted a cerium tungsten alloy electrode, plasma cutting materials generally used in pure zirconium electrode . Thorium tungsten electrode materials, the biggest drawback is the α -ray intensity is extremely high, serious damage to the body's health and pollute the environment. Comparison with thorium tungsten electrode material , cerium tungsten electrode material generated during the operation α -ray dose is extremely small, only one-thousandth of thorium tungsten electrode material about other performance indicators can be at or near the thorium tungsten electrode material . These two materials in the AC arc electrode burning large , low life is another disadvantage that they co-exist . Although the performance of pure zirconium electrode material can reach thorium tungsten , cerium tungsten electrodes indicators, but the electrode material products cost more than the latter two electrodes 1 to 1.5 times higher . Countries, such as the United Kingdom in addition to tungsten thorium , cerium and zirconium tungsten electrodes , but also the use of a zirconium tungsten electrode material , its main ingredient is tungsten W , 99% zirconium oxide ZrO2 0.7 to 0.9 %, other impurities. In the same work norms , the ratio of cerium tungsten electrode tungsten material zirconium , thorium tungsten electrode material burning rates are low , long life, electrode temperature increased, the thickness of the workpiece increases, narrow kerf or welds , welding, cutting quality than cerium tungsten, thorium tungsten electrode materials , electrode materials cost less than pure zirconium , and in AC arc can be widely used. Coupled with the electrode material α -ray dose is small, reducing the damage to human and environmental pollution , to create the conditions for the automated production . However, the material brittle material , pressure processing performance is poor , the low yield machining electrode .


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TIG and plasma arc welding using thorium tungsten electrode containing 1-1.2 % of thorium oxide , thorium is a radioactive substance , in the welding process and thorium tungsten rod contact with the process, affected by radiation . Radiation acting on the body in two forms : one is external irradiation , the second is to enter the body through the respiratory and digestive systems occur in vivo exposure. From the right TIG and plasma welding mask a lot of investigation and determination proved that they are less harmful radioactivity , because daily consumption of thorium tungsten rods only 100-200 mg dose of radiation is minimal , little effect on the human body . But there are two cases must be noted: First, in the container welding, poor ventilation , dust in the radioactive particles may exceed health standards ; Second, when the grinding and the presence of thorium thorium tungsten rod tungsten rod locations , radioactive aerosols and radioactive dust concentration can reach or exceed health standards. Radioactive substances invade the body can cause chronic radiation sickness , mainly in the general functional state weakened , you can see the obvious debilitating weakness, decreased resistance to infectious diseases , weight loss and other symptoms. < br />
Measures to prevent radiation injury

( 1) Thorium tungsten rod should be a dedicated storage device , a lot of storage should be hidden in a metal box inside , and install the exhaust pipe .

( 2 ) Use of airtight cover welding, the operation should not open the cover , manual operation, the air must wear protective helmets or use other effective measures .

( 3 ) Shall be available exclusively to the grinding wheel thorium tungsten rod , wheel confidential install dust removal equipment, grinder debris on the ground should always be wet wipe and focus deep processing .

( 4 ) Grinding thorium tungsten rod should wear dust masks. After contact with thorium tungsten rod should wash their hands with soap and running water , and wash clothes and gloves .

( 5 ) The selection of appropriate standards welding , to avoid excessive burning thorium tungsten rod .

( 6 ) As far as possible without the use of thorium tungsten rod cerium or lanthanum tungsten rod tungsten rod , because the latter two non-radioactive .


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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On the market cerium tungsten, tungsten- lanthanum , yttrium tungsten, pure tungsten , zirconium , tungsten thorium tungsten electrodes . Tungsten cerium , lanthanum tungsten, pure tungsten , zirconium tungsten electrode non-radioactive ; thorium tungsten electrode is the world's highest market share of tungsten electrodes kind , accounting for over 70% of the world , but because thorium tungsten electrode grinding and polishing powder metallurgy and rolling will occur during radioactive contamination on the human body and the environment has a lot of harm , so European countries limit the production of the varieties electrode ; multivariate composite rare earth tungsten electrodes because they do not use radioactive elements thorium , to achieve a non-radioactive contamination in the field of green production and use. So in general there is a radioactive tungsten electrodes , mainly because more than 71% on the market using the thorium containing radioactive thorium tungsten electrode . < br />
Measures to prevent radiation injury

( 1) Thorium tungsten rod should be a dedicated storage device , a lot of storage should be hidden in a metal box inside , and install the exhaust pipe .

( 2 ) Use of airtight cover welding, the operation should not open the cover , manual operation, the air must wear protective helmets or use other effective measures .

( 3 ) Shall be available exclusively to the grinding wheel thorium tungsten rod , wheel confidential install dust removal equipment, grinder debris on the ground should always be wet wipe and focus deep processing .

( 4 ) Grinding thorium tungsten rod should wear dust masks. After contact with thorium tungsten rod should wash their hands with soap and running water , and wash clothes and gloves .

( 5 )The selection of appropriate standards welding , to avoid excessive burning thorium tungsten rod .

( 6 ) As far as possible without the use of thorium tungsten rod cerium or lanthanum tungsten rod tungsten rod , because the latter two non-radioactive .


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com;sales@xiamentungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
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Fake gold actually is often shinier than real gold. Real gold, particularly when it is in nugget form, has a yellow, almost waxy sheen. This sheen will not change regardless of what light it is in. Most types of fake gold may look shinier or duller in different lights, and may appear almost silver at times. Real gold is also malleable, while typical fake gold is hard. Fake gold is also lightweight in most cases, and even plating will not make a piece of fake gold weigh even a seventh of what real gold does in most cases.

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