Debinding and Sintering
Vacuum debinding and sintering is a process required for many parts and applications, including powdered metal parts and MIM components, 3D metal printing, and beading applications like abrasives. The debind and sinter process masters complex manufacturing requirements.
Binders are generally used in all of these applications to create the pre-heat treated parts. The parts are then heated to the binding agent's vaporization temperature and held at this level until all of the outgassing of the binding agent is complete.
Debinding segment control is provided through the application of a suitable partial gas pressure that is above vapor pressure temperature of the other elements in the alloy base material. The partial pressure is normally between 1 and 10 Torr.
The temperature is increased to the sintering temperature of the base alloy and held to ensure solid-state part diffusion occurs. The furnace and parts are then cooled. Cooling rates can be controlled to meet hardness and material density requirements.