Post-sintering treatment

1. Re-pressing In order to improve physical and (or) mechanical properties, pressure is usually applied to sintered products.

2. Finishing sizing is the re-pressing in order to achieve the required size.

3. Plastic coining is a recompression in order to achieve a specific surface topography.

4. Powder forging powderforging The unsintered, pre-sintered or sintered preforms made from powder are thermally densified by forging, which is accompanied by a change in shape.

5. Impregnation is a method of filling the open pores of sintered parts with non-metallic substances (such as oil, paraffin or resin).

6. Steam treatment heats the sintered iron-based products in superheated steam to form a protective film of ferroferric oxide on the surface, thereby improving certain properties.

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