Back to results
US 7,582,255 B2Granted
Warm molding raw material powder and warm molding method
AssigneeMitsubishi Materials PMG Corporation
InventorsTakashi Nakai, Kinya Kawase
Life of this patent
Estimating the term…
Abstract
A hydroxy fatty acid salt having an average particle diameter of from 5 μm to 100 μm with a composition of from 0.3 wt % to 2 wt %, and more preferably, from 0.5 wt % to 2 wt % is added to a raw material powder in powder metallurgy, and worm molding is performed. In addition, a hydroxy fatty acid salt having an average particle diameter of 50 μm or less is attached on a mold in advance, and after that, the warm molding is performed. As a hydroxy fatty acid salt, 12-hydroxy lithium stearate is suitably used.
Claims8
A warm molding method comprising:
- attaching a powder consisting of a hydroxyl fatty acid salt having an average particle diameter of 50 μm or less on a forming surface of a mold;
- and
- using a warm molding raw material powder in powder metallurgy, the warm molding raw material powder comprising a lubricant which consists of a hydroxyl fatty acid salt having an average particle diameter of from 5 μm to 100 μm in a range of from 0.3 wt % to 2 wt %.
Dependencies are inferred from the claim text.