What is Tungsten? do You Know Tungsten Goods?

Tungsten Products is a steel contains tungsten, plus these tungsten goods comprising tungsten 18%.

Tungsten carbide, it really is also called tungsten titanium. Its hardness is vickers 10K, together with this hardness is after dianond. Just by virtue of this, many Tungsten Carbide Production (common are made by watch) has worn characteristic.

Tungsten is often used to make lathe tools, impact driller, glass sword drill, electroplating and also ceramic tile. It really is solid annealing sticking, but not extremely brittle, so it belong to rare metal.

Tungsten powder sintering molding is pressing, sintering into blank heated to a definite temperature (sintering temperature), maintain a certain volume of time (time), then heat and cool, in order to obtain the required performance related with tungsten steel materials.

Compounds Of Tungsten can be divided into four basic phase:

1: removal forming agent, burn stage at this stage sinter happen below:

Molding agent, the sinter early removal with temperature, molding agent gradually decomposition or vaporization, eliminate the sinter, meanwhile, molding agent more or less to sinter, increased carbon footprints. With the molding, quantity plus sintering process concerning change. Powder surface oxides is reduced, in sintering temperature, hydrogen can restore cobalt and tungsten oxide removal in vacuum forming, if the agent and also sintering, carbon and then oxygen reaction is not powerful. Powder particles. The contact stress gradually eliminate, binding metal powder began to reply not to mention recrystallization, surface, press block diffusion began to improve strength.

2: solid-phase sintering stage (800 eutectic temperature) --

In the temperature, the liquid used on a stage except continue the whole process of what happened, solid instead must intensifies, plastic flow increase diffusion, sinter apparent shrinkage.

3: liquid sintering stage (eutectic temperature sintering temperature) --

When the sinter appears liquid, shrinkage, then produce crystals completed soon change, formed the basic structure and then organization concerning alloys.

4: cooling stage (room) sintering temperature -

At this stage, the organization coupled with the phase composition tungsten steel cooling conditions together with with some change, can use this feature related with tungsten steel heat to improve their physical together with mechanical properties.