B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 1/00 (2006.01) C22C 33/02 (2006.01)
Patent
CA 2550597
The invention concerns an improved segregation-resistant and dust-resistant metallurgical composition for making compacted parts, comprising at least about 80 percent by weight of an iron or iron-based powder; at least one alloying powder; and (c) about 0.05 to about 2 percent by weight of a binding/lubricating combination of polyethylene wax and ethylene bis- stearamide, the polyethylene wax having a weight average molecular weight below about 1000 and a melting point below that of ethylene bisstearamide, and being present in amount between 10 and 90% by weight of the binding/lubricating combination.
L'invention concerne une composition métallurgique résistante à la ségrégation et résistante à la poussière améliorée permettant de réaliser des pièces compactes. Cette composition contient au moins environ 80 % en poids de fer ou de poudre à base de fer; au moins une poudre d'alliage; et (c) environ 0,05 à environ 2 % en poids d'une association liant/lubrifiant de cire de polyéthylène et de bis-stéaramide d'éthylène. La cire de polyéthylène a un poids moléculaire moyen inférieur à environ 1000, un point de fusion inférieur à celui du bis-stéaramide et est présente dans une quantité située entre 10 et 90 % en poids de l'association liant/lubrifiant.
Ahlin Asa
Larsson Mats
Ramstedt Maria
Vidarsson Hilmar
Fetherstonhaugh & Co.
Hoganas Ab
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