Tungsten Carbide Button Density Affects by TPA Pressing Method

Metal powder pressing method includes single pressing process, double pressing process, floating pressing process, friction pressing process, etc. Tungsten carbide button produced by different pressing process has various density distribution law. Density is an important factor that would affect product quality. Besides from gradient and properties of metal powder, pressing mould surface roughness, tungsten carbide button density is also affected by powder movement after being pressed in the pressing mould. The friction between powder and side of pressing mould will affect density of tungsten carbide button.           

The conventional hydraulic pressing adopts single pressing process. Shape and thickness of powder layers are quite different. So the density is uneven. TPA pressing method adopts double pressing process. There is a neutral layer during the process, the powder in this layer almost stay still during the pressing process. Neutral layer is pressed from both up side and down, compared to single pressing process, the density is even. 



Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

• < Prev
• Next >