Method of forming undercut in metal powder injection-molded article
AssigneeInjex Corporation
InventorsKenichi Shimodaira, Junichi Hayashi, Masaru Kato
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Abstract
To provide a method for forming undercuts of a metal injection molded product by simple processes and metal injection molded products having undercuts formed by the forming method thereof, steps are included of injection-molding a feed stock containing metal powder and binding resin, forming undercuts to an injection green body obtained by the injection-molding, and sintering after debinding the injection green body formed with undercuts. It is preferable that undercuts are formed by deforming at least one part of an injection green body; it is more preferable that they are deformed by pressing with a pressing member.
Claims20
A method for forming undercuts of a metal injection molded product comprising the steps of:
- injection-molding a feed stock containing metal powder and binding resin;
- forming undercuts to an injection green body provided by the injection molding wherein the undercuts are formed by pressing at least one part of the injection green body with a pressing member having a heated pressing surface;
- and
- sintering the injection green body formed with undercuts after debinding.
A method for forming undercuts of a metal injection molded product comprising the steps of:
- injection-molding a feed stock containing metal powder and binding resin;
- forming undercuts to an injection green body provided by the injection molding, wherein the undercuts are formed by pressing at least one part of the injection green body with a pressing member, wherein protrusions are formed at a pressing surface of the pressing member.
A method for forming undercuts of a metal injection molded product comprising the steps of:
- injection-molding a feed stock containing metal powder and binding resin;
- and
- sintering an injection green body molded by the injection-molding after debinding;
- wherein a mold for injection molding having a core made up of an elastic material for forming undercuts in the mold is used in the injection-molding step.
A method for forming undercuts of a metal injection molded product comprising the steps of:
- injection-molding a feed stock containing metal powder and binding resin;
- forming undercuts to an injection green body provided by the injection molding, wherein the undercuts are formed by heating and softening the injection green body;
- and
- sintering the injection green body formed with undercuts after debinding.
Dependencies are inferred from the claim text.