Produced for highest demands
Accurateness, quality assurance und know-how - that is how we achieve high class tungsten carbide
![](https://www.hht-hartmetall.com/en/dateien/produktbilder/produktionsprozess_foto_1-1-.gif?x=400)
Manufacturing of our tungsten carbide -MADE IN GERMANY- is continuously screened by the quality management. The experience of several decades, analyses, improvements and innovations made our product to the current high performance carbide it is today.
It is a very complex case to produce carbide and all parameters have to fit exactly so that our customers always receive the quality they were used to.
![](https://www.hht-hartmetall.com/en/dateien/produktbilder/hps18989.jpg?x=400)
At the beginning WC, Co and doping elements are mixed according to our special recipes. This mixture is then ball-milled for several hours and afterwards sieved for an outstanding homoge-nous distribution of carbide grains of the specific grade powder. With the help of organic additives, the powder is plasticized in our kneaders into a clay like dough that can be extruded. Through our patented production technology the plasticized mixture is then extruded. There-by coolant ducts with different helical angles and geometries can be realized in our round rods.
![](https://www.hht-hartmetall.com/en/dateien/produktbilder/dsc_6125_02.gif?x=400)
Subsequently, part of the added liquids must be slowly removed from the product under strictly controlled conditions in our climate chamber and special drying-furnaces. The drying time depends on the outer diameter. Main and counter spindle, two turrets, six linear and two round axes as well as a specially adapted bar loading and part removal system – with these prerequisites, preforms can be produced fast, economical and reliable to meet customer requirements. At the beginning, the residual plasticizers evap-orate during the dewaxing process. After further heating, the Co melts at about 1380 °C and flows into the free spaces between the WC grains. Through the hot-isostatic process, the remaining porosity is removed and the product subsequent-ly cooled. The cemented carbide products lose up to 25% in volume during the whole Sinter-HIP process.
All of our carbide rods were produced in Germany and each one can be tracked rigth to its start.
Do you have further questions?
Please write a mail or call our team!