Method for making compacted products and iron-based powder...

Details Method for making compacted products and iron-based powder... Method for making compacted products and iron-based powder...

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) B22F 3/00 (2006.01) C22C 33/02 (2006.01)

Patent

CA 2563906

The invention concerns a method for producing products and a coarse iron-based powder comprising a lubricant having a crystalline melting point below 25 ~C, a viscosity (.eta.) at 40 ~C above 15 mPas and wherein said viscosity is temperature dependent according to the following formula: 10log.eta.=k/T+C, wherein the slope k is preferable above 800, T is temperature in Kelvin and C is a constant, in an amount of 0.05-0.4w- %.

L'invention concerne une composition métallurgique de poudre contenant du fer brut ou une poudre à base de fer et comme lubrifiant au moins une huile non siccative possédant un point de fusion cristallin inférieur à 25 ·C, une viscosité (.eta.) à 40 ·C supérieure à 15 mPas. Ladite viscosité dépend de la température selon la formule suivante : 10 log .eta.=k/T+C, la pente k étant, de préférence, supérieure à 800, T s'exprimant en kelvin et C étant une constante dans une quantité comprise entre 0,05 et 0,4 % en poids de la composition.

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