conventional powder metallurgy
Powder Metallurgy (PM) is an effective metal working technology. Applying unique materials, inventive techniques, and creative geometries enable engineers to reduce total manufacturing costs. In addition, the PM process is a minimal waste process. With these benefits combined, competing processes cannot match PM.
Providing value through inventive processes, geometries and materials
Preserving the natural resources of our planet
The PM process saves natural resources through recycling, conserves raw materials, and yields low emissions. Metal powder is more expensive than conventional steel, but the difference is offset by saving material. Nearly 100 percent of PM powder is used. This is true for the typical PM part of less than 1kg. Heavier parts can also benefit from this process if the steel blank requires a lot of machining.
The efficiency depends on the operating speed of the press, the flow properties of the powder, and the height of the components compacted. The sintering costs are influenced by the required material quality, sintering temperature and time, and protective atmosphere - but are fairly independent from part geometry.
The parameters of the manufacturing process are determined by the functional requirements of the component properties, related to the chemical composition, density, and precision. Cost comparison with competing technologies, such as stamping, cold extrusion, precision casting, precision forging, and plastic moulding is strongly influenced by requirements of material, shape, and production quantity.
Higher requirements on material properties will require tighter tolerances. The advantages of using a sintered component increase with production quantity. Even when machining is necessary, the overall economics of a sintered blank often turn out favourable.
Conventional PM materials
We provide the broadest material selection in the industry to meet a wide range of needs:
- Low- and High-Alloy Steels
- Stainless Steel
- Special Alloys
Our metal powders are engineered to your needs and tailored to your applications. Our PM process technologies have been modified to achieve full densification and tight dimensional tolerances.
When selecting the best PM material for a particular application, consideration is given to customer-specific requirements such as strength, ductility, and wear-resistance. With our advanced specialty alloys and processing techniques, GKN PM components often exceed industry performance standards.