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Production & Equipment

Carbide production / Blanks
Carbide is a composite material consisting of particles mainly with tungsten carbide as hard material and a metallic binder . For this reason , with carbide it is possible to achieve hardness and toughness combinations which can’t obtained with other materials .

Powder Production
Due to its high melting point tungsten carbide (WC)can only be produced through sintering when needed for technically sophisticated applications . For this purpose , the powder consisting of the tungsten carbide ,the cobalt binder and sometimes additional alloys is mixed , milled and spray-dried .
This process results in a spray-dried granulate which can easily be used for production ,since its chemical and physical properties have already been adapted to the final carbide specification .

Ready to press powder
Manufacture of carbide blanks
By applying pressure the carbide powder is converted into a blank .The material will receive its near net shape through the application of traditional machining methods( sawing ,drilling,milling , turning ),so that extended machining of the sintered carbide blank is no longer necessary. The density of the blank is approx.50% of the sintered carbide ‘s density which leads to an approx.20% shrinkage in length.


The sintering process converts the blank into a homogeneous piece of carbide with a high degree of hardness .When sintering hard metal (usually at a temperature of approx.1400 c ) , this process is called liquid phase sintering . In this case ,the binder (e.g. cobalt ) melts and wets the WC hard material particles .After sintering , the density of the carbide  is almost , or even precisely, the same as the theoretical density . Any residual porosity which occurs after the sintering procedure may be removed through an ensuring HIP process .


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