Method of manufacturing a composition for use in injection molding powder metallurgy
First Claim
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1. A method of manufacturing a composition for use in injection molding powder metallurgy, which comprises the steps of:
- (a) providing a metal powder whose grains are of irregular shape and wherein the average grain size does not exceed 50 μ
m,(b) mechanically sphericalizing the metal powder of step (a) to provide a sphericalized metal powder,(c) mixing a binder into said sphericalized metal powder at a ratio of 9 parts by volume of binder to 11 parts by volume of powder, and(d) kneading the mixture of step (c), thereby providing said composition.
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Abstract
A composition for use in injection molding powder metallurgy, is provided by applying mechanical sphericalization to a metal powder of an irregular shape and having an average grain size of not more than 50 μm to form a sphericalized metal powder, and then mixing and kneading a binder of not more than 9 parts by volume relative to 11 parts by volume of the sphericalized metal powder.
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Citations
6 Claims
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1. A method of manufacturing a composition for use in injection molding powder metallurgy, which comprises the steps of:
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(a) providing a metal powder whose grains are of irregular shape and wherein the average grain size does not exceed 50 μ
m,(b) mechanically sphericalizing the metal powder of step (a) to provide a sphericalized metal powder, (c) mixing a binder into said sphericalized metal powder at a ratio of 9 parts by volume of binder to 11 parts by volume of powder, and (d) kneading the mixture of step (c), thereby providing said composition. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification