Tungsten Concentrate Price

The Safe Operation of Gas Tungsten Arc Welding

Details: Category: Tungsten Information; Published on Wednesday, 15 May 2013 14:41; Hits: 2298

The TIG harmful factors
Argon arc welding affect the body of harmful factors in three areas:
1, radioactive
Thorium tungsten thorium is a radioactive element, thorium tungsten tungsten arc welding radiation dose is very small, within the allowable range, there is little risk. If the radioactive gases or particles into the body as within the radioactive source, it will seriously affect their health.
2, high-frequency electromagnetic field
Using high-frequency arc, the high-frequency electromagnetic field strength between 60 ~ 110V / m, more than the health standard (20V / m) several times. But since time is very short, has little effect on the human body. Frequent starting arc, or the continued use of the high-frequency oscillator as a stable arc device in the welding process, the high-frequency electromagnetic fields can become one of the harmful factors.
3, the harmful gases - ozone and nitrogen oxides
Argon arc, the arc column temperature. UV radiation is much larger than the general arc welding in the welding process to produce large amounts of ozone and nitrogen oxides; In particular, the ozone concentration is far above the reference health standard. If you do not take effective ventilation, these gases impact on human health, argon arc welding the main harmful factors.
Second, the security measures
1, ventilation measures
Argon arc welding work site should have good ventilation, the discharge of harmful gases and dust. In addition to the plant ventilation, welding capacity, welder concentration install several axial flow fan out the exhaust.
In addition, measures can be applied to local exhaust ventilation will arc around the harmful gases siphoned, such as open arc exhaust hood, exhaust gas torch, light a small fan.
Protective ray measures
Maximize the use of very low radiation dose of cerium tungsten. Thorium-tungsten and cerium tungsten processing, should be sealed or exhaust the grinding wheel, the operator should wear personal protective equipment such as masks, gloves, face and hands should be washed after processing. Thorium tungsten and cerium tungsten pole should be placed on aluminum box within save.
3, high-frequency protection measures
Preparedness and weaken the influence of high frequency electromagnetic fields, the measures taken are:
(1) The workpiece is well grounded, the torch cable and ground use metal braided wire shield;
(2) the appropriate lower frequency;
(3) Try not to use high-frequency oscillator as a stable arc device, reducing the duration of action of high frequency electricity.
(4) other personal protective measures
Argon arc when, due to ozone and ultraviolet rays are strongly advised to wear non-cotton clothes (such as acid, tussah silk, etc.). Welding inside the container can not use local exhaust ventilation, air helmet and air mask or anti-virus masks and other personal protective measures.

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The Choice of Argon Arc Tungsten Electrode

Details: Category: Tungsten Information; Published on Wednesday, 15 May 2013 14:34; Hits: 2240

WT thorium tungsten:
Abroad, the most commonly used tungsten electrode. Easy arc starting, arc stability. But with traces of radioactivity are widely used in DC welding. Typically used for DC welding of carbon steel, stainless steel, nickel alloys and titanium.
WC cerium tungsten:
Currently widely used as a Electron emission capacity thorium tungsten is ideal to replace the thorium tungsten non-radioactive materials. In DC or AC welding, especially on the rail in a small current pipeline, the best welding of small precision parts.
WL lanthanum tungsten:
High-current DC and AC, are applicable. Lanthanum tungsten closest to the conductive properties of thorium, tungsten, without changing any of the welding parameters can be a convenient alternative thorium tungsten, and maximize the use of effects.
WZ zirconium tungsten:
For AC welding, under special conditions need to prevent electrode contamination of the weld metal. Performed well under high load currents. AC welding for magnesium, aluminum and its alloys.
WY yttrium tungsten:
In welding, the arc beam slender, compressed large extent, in the medium and high current penetration maximum. Plastic made from 1mm thick sheet and a variety of bar and wire. Mainly used in military and aerospace industry.

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Tungsten Carbide Rod Grade

Details: Category: Tungsten Information; Published on Wednesday, 15 May 2013 10:58; Hits: 2296

A detailed chart with hole and location dimensions as well as manufacturing tolerances is available for each standard configuration.

A Material Description Data Sheet is available for each tungsten carbide rod grade.

2H30 - Tungsten Carbide Rods 310mm or 330mm long with two holes twisted to 30° helix
2H40 - Tungsten Carbide Rods 310mm or 330mm long with two holes twisted to 40° helix
3H30 - Tungsten Carbide Rods 310mm or 330mm long with three holes twisted to 30° helix
3H40 - Tungsten Carbide Rods 310mm or 330mm long with three holes twisted to 40° helix
2SH - Tungsten Carbide Rods 310mm or 330mm long with two straight parallel coolant holes
2CLH - Tungsten Carbide Rods 310mm or 330mm long with two straight parallel coolant holes and reduced bolt hole circle
CH - Tungsten Carbide Rods 310mm or 330mm long with one straight central coolant hole
SOLID - Tungsten Carbide Rods 310mm or 330mm long with no holes
Milling Cutter Blanks - Tungsten Carbide Rods with one central hole and one to five lateral exits.

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Tungsten Carbide Brazing Tool

Details: Category: Tungsten Information; Published on Wednesday, 15 May 2013 11:14; Hits: 2274

The use intensity of tungsten carbide brazing tool stands for the work ability of the tool without damage. The coefficient K representes the use intensity. The coefficient K is the workload ratio between the actual amount of work done and the actual amount of work to complete in the non-manufacturing scrap and conditions of no damage . In order to use a statistical method to determine the coefficient K, we must accumulate large amounts of data of the tool working ability. Within constant condition of tool using case, for example, for a company which produces fixed production in several years, the change of the coefficient K means a change in the quality of the tool. Continuously monitoring the coefficient values, you can get the data of tool in the loss of non-production areas and improving the potential of the tool quality.

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Tungsten Concentrate Price Rises In the First Half of 2013

Details: Category: Tungsten Information; Published on Tuesday, 14 May 2013 17:37; Hits: 2242

Through the analysis, tungsten concentrate price continues to rise.

According to import & export data of February, some product’s prices began to recover while exports are declining. It would be great influence on domestic tungsten concentrate price. As a result, the foreign demand would shrink accordingly. Another important reason for the tungsten concentrate recovery is the beneficial regulation forwarded by local policies.

Now, due to demand of capital construction, machinery and processing, etc, lower down the developing steps, our national larger the right of tungsten concentrate manufacturer, therefore, the price has been accelerate the pace of recovery. So tungsten concentrate price will be in the trend of increasing in May.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
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