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Tungsten Carbide Ball Processing

Details: Category: Tungsten Information; Published on Wednesday, 08 May 2013 09:29; Hits: 2341

The tungsten carbide powder and powdered cobalt metal are mechanically mixed to form a uniform combination. To this combination is added a polymer or wax that acts as a mechanical binder in the pre-sintered stage. A carefully measured volume of this combined powder is compressed by a double acting press to form the tungsten carbide ball blank, or pre-form. The binder is removed by placing the preformed parts in a vacuum chamber and raising the temperature. The binder out gasses and is trapped down stream as a liquid.

Next, the combined tungsten carbide and cobalt pre-forms are sintered or fused into a solid mass by heating them to a high temperature in a vacuum or hydrogen atmosphere furnace.

Some tungsten carbide ball sizes are Hot Isocratic Pressed or hipped. The newest procedure is to Sinter-HIP the parts in a single operation. Using micro size diamond dust, they are then finished lapped and polished to final size and microinch roundness with a sub-microinch surface finish.

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Tungsten Carbide Introduction

Details: Category: Tungsten Information; Published on Wednesday, 08 May 2013 09:24; Hits: 2325

Tungsten Carbide is neither a metal nor is it a ceramic. It is a cermetal although this isn't a widely used term. This is a combination of a large percentage of Tungsten Carbide ceramic particles bonded together by a small percentage of a metallic binder, to form a solid mass.

Tungsten Carbide is extremely stiff, with a Young's modulus of elasticity of 98,000,000 pounds per square inch, compared with steel at 30,000,000 PSI. This high stiffness makes cemented tungsten carbide balls a good choice for ball-sizing and they provide premier results as components of kinematic couplings.

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Applications of Tungsten Alloy for Balancing Components

Details: Category: Tungsten Information; Published on Wednesday, 08 May 2013 09:03; Hits: 2353

Tungsten alloys are generally used by aerospace designers for balancing components or reducing vibration. The high density of tunsten alloys materials allows maximum sensitivity from optimum mass and is particularly valuable in situations where a large mass has to be contained in a confined space.

Examples of applications where tungsten alloys have been used include:

Components such as ailerons, flaps, rudders and elevators are fitted with counterweights to optimize their performance.

Trim weights are used to achieve final balance in an individual component, assembly or complete aircraft.

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Tungsten Carbide Ball Material

Details: Category: Tungsten Information; Published on Wednesday, 08 May 2013 09:18; Hits: 2405

Tungsten carbide ball material is an incredible material. It was originally developed for use as a cutting tool, in machine tools applications, where it still finds wide use today.

It is extremely hard at 91 HRA which is equivalent to 1500 Vickers 30. This material is very wear resistant, with some abrasion tests showing it at 30 times hard steel. It has good long-term dimensional stability, which makes a good material for gage applications.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Radiation Shielding Applications of Tungsten Alloys

Details: Category: Tungsten Information; Published on Wednesday, 08 May 2013 08:49; Hits: 2279

The density and strength of tungsten alloys make them the first choice for radiation shielding applications.Their energy-absorbing qualities are excellent choices to protect sensitive electronic equipment, as well as delicate human tissue.

Tungsten alloys are used for radioactive source containers, gamma radiography, syringe shields, oncology treatment systems and oncology instruments. Tungsten alloys provide unsurpassed strength, control and protection.

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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