METHOD OF PRODUCING A SINTER-HARDENABLE POWDER METAL PART

摘要

The invention describes a method of producing a sinter-hardenable powder metal part from a sinter powder containing chromium, comprising the steps of preparing the sinter powder, compacting the sinter powder to form a green compact, pre-sintering the green compact to form a brown compact under a reducing atmosphere followed by slow cooling, calibrating the brown compact and high-temperature sintering of the calibrated brown compact followed by rapid cooling. The pre-sintering process is operated at a temperature selected from a range with a lower limit of 700 °C and an upper limit of 1050 °C.