LUBRICANT FOR METALLURGICAL POWDER COMPOSITIONS

摘要

This invention concerns a lubricant for warm compaction of iron-based metallurgical powder compositions. 50 to 100 % by weight of the lubricant is a polyester, aromatic or partly aromatic, which has a number-average molecular weight Mn of 5 000 - 50 000. This invention further concerns a metal powder composition containing the lubricant, a method for making sintered products by using the lubricant, and use of the same in warm compaction of metallurgical powders.