Pressing Process Effect on Tungsten Copper Electrode Properties IV

For the effect of compaction pressure of tungsten copper electrode hardness, the pressure is suddenly increased in the beginning, the hardness of tungsten copper electrode can be increased 10-20HB. While when the pressure rises to a certain degree, the hardness is almost unchanged, despite the increasing pressure. As the result of the pressing pressure is relatively small, the powder body is pressed into blank, which decrease the porosity rapidly and improve the density of tungsten copper electrode remarkably. But the contact area among the particles is still small so that strength increase is slower.

When the pressing pressure is greater, the particles can only increase contact area and reduce the porosity by elastic plastic deformation so that the density increases smoothly. However, due to the distance of particles reduce, the contact area increase, interaction force of atoms are emerging, which the strength of the rapidly improved. When the pressing force climb to a certain degree, the density and hardness of pressed compact is maximum, it will not change no matter how the pressure changes.

More information about pressing process effect on tungsten copper electrode properties, click here:

http://news.chinatungsten.com/en/tungsten-information/80252-ti-10309 
http://news.chinatungsten.com/en/tungsten-information/80294-ti-10312 
http://news.chinatungsten.com/en/tungsten-information/80295-ti-10313

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