Achemetal Tungsten & Molybdenum Co., Ltd Achemetal Tungsten & Molybdenum Co., Ltd

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Achemetal Tungsten & Molybdenum Co., Ltd

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Shielding

(Summary description)Tungsten-molybdenum materials are suitable to be used for shielding at the temperature of 1,300℃ to 2,800℃, which reserve the heat in an effective interval in the modes of heat reflection and convection obstruction.

Shielding

(Summary description)Tungsten-molybdenum materials are suitable to be used for shielding at the temperature of 1,300℃ to 2,800℃, which reserve the heat in an effective interval in the modes of heat reflection and convection obstruction.

Information

Shielding

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Email：yanyan@achemetal.net

Tungsten-molybdenum materials are suitable to be used for shielding at the temperature of 1,300℃ to 2,800℃, which reserve the heat in an effective interval in the modes of heat reflection and convection obstruction.

Because of limited material features, tungsten-molybdenum screens are usually riveted, and can also be butt jointed or overlap jointed.

Equipment for laser cutting and so on is used for blanking, so holes can be positioned accurately, thus avoiding assembly difficulties.

Due to the adoption of special annealing and setting processes, shielding produced by Achemetal have smooth model and uniform spacing among all the layers.

All the layers can be spaced by corrugated plates, U-shaped lattice bars or molybdenum wire springs and spacing rings, and can be fixed by molybdenum wires or tungsten wire cards as well as tungsten or molybdenum screws.

Achemetal can also press reinforcing ribs for screens with thinner walls, to enhance their strength.

With mature processes, Achemetal can manufacture inner side screens according with tungsten-tungsten, tungsten-molybdenum and molybdenum-molybdenum.

 

Shielding

Previous: Heater
Next: Hot Isostatic Pressing Cylinder
Previous: Heater
Next: Hot Isostatic Pressing Cylinder
Heater 2017-11-21 00:00:00
With extremely low saturated vapor pressure, low thermal expansion coefficient and extremely good high-temperature strength, tungsten and molybdenum materials are the best choice for high-temperature in-furnace heating elements.
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Shielding 2017-11-21 00:00:00
Tungsten-molybdenum materials are suitable to be used for shielding at the temperature of 1,300℃ to 2,800℃, which reserve the heat in an effective interval in the modes of heat reflection and convection obstruction.
More>
Hot Isostatic Pressing Cylinder 2017-11-21 00:00:00
Heat screens applied in hot isostatic presses are called hot isostatic pressing cylinders. Hot isostatic pressing cylinders have higher requirements than common heat screens when working under the conditions of 2000℃ and 2000MPa. To ensure the air tightness, Achemetal has adopted a thermal spraying process based on welding.
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Crucible 2017-11-21 00:00:00
Tungsten powder or molybdenum powder is directly subjected to sintering molding or hot isostatic pressing molding, and is mostly used for manufacturing large crucibles of sintering furnaces, crystal growth furnaces, glass smelting and rear earth smelting equipment. Particularly, these kinds of crucibles are used in furnaces of growing sapphire crystals by KY method, EFG method and heat exchange method in large quantity. Usually, the wall thickness is 8-15mm; the diameter is 100-600mm; the height is 50-700mm. The purity of these kinds of crucibles: W≥99.95%; the density usually can reach 18.2g/cm3; and the density can reach more than 18.8g/cm3 by a hot isostatic pressing technology as required specially. The density of molybdenum crucibles usually can reach about 10.0g/cm³.
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Loaded Boat 2017-11-21 00:00:00
In sintering furnaces or thermal treatment furnaces, tungsten or molybdenum materials are required to be prepared into containers when the processed materials are powder or granules. Loaded boats can be designed in different shapes according to different shapes and ventilation conditions of the processed materials. Achemetal can provide boat vessels made of pure tungsten, pure molybdenum as well as tungsten alloy and molybdenum alloy according different requirements on the operating temperature and strength as well as purity. Tungsten-molybdenum loaded boats manufactured by Achemetal feature good high-temperature deformation resistance and high dimensional accuracy.  
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Rack 2017-11-21 00:00:00
Racks are used for placing and transferring workpieces needing to be processed in high-temperature annealing furnaces and sintering furnaces, and have extremely high requirements on the high-temperature strength of materials for manufacturing racks. Achemetal can manufacture pure tungsten, pure molybdenum, molybdenum-lanthanum alloy and titanium-zirconium-molybdenum alloy racks, to enhance creep resistance and high-temperature strength of materials. 
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Fastener 2017-11-21 00:00:00
Achemetal can provide you with tungsten or molybdenum screws or nuts of British system or metric system.
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Tungsten-molybdenum Material for Monocrystalline Silicon Furnace 2017-11-21 00:00:00
With high-temperature resistance and low volatility, tungsten-molybdenum materials are widely applied to monocrystalline silicon furnaces and polycrystalline silicon furnaces.
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