Sintering is a primary a material consolidation process for producing components from metallic or ceramic material powders with heat, and sometimes added pressure, to below the material liquification temperature. For many materials, sintering can simply take place in a limited protective gas, or ambient atmosphere. If the material chemistry lends itself to oxidation vacuum sintering offers the best alternative for quality sintering.
If sintering is to take place in an environment under high vacuum, then the sintering systems manufactured by PVA Industrial Vacuum Systems are one of the best choices.
Cold compressed powder, producing an initial “green“strength part, can often be sintered in an atmospheric furnace due to their low binder content. However this is generally not possible for injection molded parts (MIM) or select metal powder printed parts (AM) which require hot isostatic pressing for consolidation.. Hard metal powder is processed in a liquid-phase sintering process in vacuum, or vacuum-overpressure, sintering plant.
PVA Industrial Vacuum Systems GmbH offers the heat treat industries highest quality vacuum sintering systems, manufactured today, for various industries. Furnace design and construction are tailored to meet your specific material requirements and product volume through-put. Share with us your engineering requirements. Our experts will return to you a detailed analysis and guidance on the best system options to meet your needs.
The plant types
Our vacuum sintering systems are modular in design and can be customized to the respective sintering task up to a working temperature of 2.200 or 2.400° C. For carbon-sensitive applications, vacuum sintering systems with a metallic heating insert are a possibility.
Vacuum sintering plant for materials without increased carbon sensitivity
The COV vacuum sintering systems, using graphite heaters, enable cost-optimized production of steels, hard metal materials, non-oxide ceramics and other composite materials. PVA’s leading edge application-adapted design, uses an optimized number and arrangement of the control heating zones, yielding a temperature uniformity across the entire vessel of a maximum of ±°3 C.
Vacuum sintering plant for carbon-sensitive materials
MOV type vacuum sintering systems with metallic heating elements are used for carbon-sensitive applications and demanding materials. These plants are equipped with power-controlled resistance heating elements made of refractory metals. Applications include both manufacturing and laboratory environments. MOV plants are cold-wall furnaces with a double-walled shell made of stainless steel. Beyond standard applications e.g. with 1600°C, sintering temperatures up to 2,400° C can be realized for special materials.