B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 1/00 (2006.01) B22F 3/00 (2006.01) C22C 33/02 (2006.01)
Patent
CA 2305187
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.
Cette invention porte sur un lubrifiant utilisé dans la compression à chaud de compositions de poudre métallurgique à base de fer. 50 à 100 % en poids du lubrifiant est un polyester, aromatique ou partiellement aromatique, ayant un poids moléculaire moyen au nombre M¿n? compris entre 5000 et 50 000. Cette invention porte également sur une composition de poudre métallique contenant le lubrifiant, sur un procédé de fabrication de produits frittés à l'aide de ce lubrifiant, et sur l'utilisation de ce lubrifiant dans la compression à chaud de poudres métallurgiques.
Storstrom Helge
Vidarsson Hilmar
Fetherstonhaugh & Co.
Hoganas Ab
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