Physical performance: Cemented carbide: HRA90—HRA92 Ma trix: RC30 'owing temperature:910-935 o C Standard Multi-edge particles can be used in the formation of the workpiece surface. For serious wear, with 1/3 of fine particles, need a broad particle size distribution to ncrease density and decrease in clearance of surfacing. Mesh size from 6.35MM-- 325 mesh.

Hardness 90.5 (8%) Shape Polygon in the workpiece surface alloy into distribution. This enables tighter particle inclusions and reduce the gap. Applied to extreme wear and tear. Three sizes: 8-10-16 16 14-20 5mm 8mm Particle shape is gravity cutting most important discovery. Those with sharp points and the sharp edge of particle coating is not good, so that there is a gap between the particles, reduced cutting edge and serious exposure. Gravity cutting alloy particles will have a very powerful cutting or grinding surface. Apply to play grinding, cutting, drilling, sawing, tools. The development of fine grades of coating alloy finds a solution to the problem of hard brittle, no wear-resistant due to softness.

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Cemented carbide roller rings (also known as tungsten carbide roll rings), superior performance, quality and stability, high precision machining, good wear resistance and high impact resistance. The cemented carbide roller is a roll made ​​of tungsten carbide and cobalt material by powder metallurgy method. Cemented carbide roller integral and modular two kinds. It was in 1909, after the advent of powder metallurgy technology, with the development of the metal processing industry was born. Since 1918, Germany launched a cemented carbide drawing dies, inspired national cemented carbide, have appeared in a variety of uses roll.

However, the cemented carbide roller a large number of applications in 1960. Morgan (Morgen) first high-speed twist-free wire rod mill was born in 1964, was the finishing speed of the wire increased 4 times. Since finishing mill work in the high-speed, high stress, poor wear resistance of cast iron roll, tool steel roller, rolling groove short life, roll repair handling very frequent, affecting the performance of the mill, were not suited to finishing production requirements, it is to be substituted by composition cemented carbide roller. The world has more than two hundred sets of Morgan mill, the consumption of hundreds of tons of cemented carbide roller.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
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Cemented carbide roller rings (also known as tungsten carbide roll rings), superior performance, quality and stability, high precision machining, good wear resistance and high impact resistance. The cemented carbide roller is a roll made ​​of tungsten carbide and cobalt material by powder metallurgy method. Cemented carbide roller integral and modular two kinds. It was in 1909, after the advent of powder metallurgy technology, with the development of the metal processing industry was born. Since 1918, Germany launched a cemented carbide drawing dies, inspired national cemented carbide, have appeared in a variety of uses roll.

However, the cemented carbide roller a large number of applications in 1960. Morgan (Morgen) first high-speed twist-free wire rod mill was born in 1964, was the finishing speed of the wire increased 4 times. Since finishing mill work in the high-speed, high stress, poor wear resistance of cast iron roll, tool steel roller, rolling groove short life, roll repair handling very frequent, affecting the performance of the mill, were not suited to finishing production requirements, it is to be substituted by composition cemented carbide roller. The world has more than two hundred sets of Morgan mill, the consumption of hundreds of tons of cemented carbide roller.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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Natural radionuclides are natural radioactive series nuclides collectively. Naturally present in nature in some radionuclides, they continue to produce a continuous decay of the radioactive series composition. There are three natural radioactive series, which led to 92238U uranium series, led by 92235U actinides or actinide uranium series and thorium series led to 90232Th. They have a very long half-life (more than three years were 4.49 × 109, 7.13 × 108 and 1.39 × 1010 years), whose atoms have been retained from the beginning to the present. Atomic number greater than 81 other radionuclides are heavy elements such as uranium nuclides exists a long-lived nuclide and thorium decays continuously. In addition, through the natural radioactivity of possible systematic study confirms some of the Periodic System of natural radionuclides, they do not belong within the above three series, including potassium -40 (T1 / 2 = 1.2 × 109 years) , rubidium -87 (T1 / 2 = 6.0 × 1010 years), indium -113 (T1 / 2 = 6 × 1014 years), lanthanum -138 (T1 / 2 = 1.2 × 1011 years), samarium -152 (T1 / 2 = 2.5 × 1011 years), lutetium -176 (T1 / 2 = 2.4 × 1010 years), rhenium -187 (T1 / 2 = 4 × 1012 years).

As medical technology advances, more and more radiant life, has caused new problems, these rays are X-rays, gamma rays, α-rays, β-rays. Tungsten alloy is used to make the best of the shield material, whether medical or industrial equipment. Compared with conventional shielding materials, tungsten alloy shielding member reflects good value. High density alloy can be provided as the energy absorption, and the volume of lead less than 1/3 of people using the tungsten alloy can be a good and reliable shielding performance. Our common language tungsten alloy radiation shielding container shielded gamma shielding and industrial supplies. Shield member can also be used collimators, cancer treatment and radiation shielding syringe. In order to protect patients and health care workers, it is necessary to use shielded tungsten alloy equipment these harmful radiation.

The researchers found that radiation capacity and material density, the greater the density shielding performance is better. Has great density tungsten alloy, so it's shielding performance is high, and tungsten alloy product is environmentally friendly, than lead less hazardous products. Tungsten alloy products are used to make the best shield materials, non-toxic and easy processing.


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