Injection molding method of large metal piece

Abstract

The invention discloses an injection (MIM) molding method of a large metal piece. The method comprises such steps as sintering raw material pretreatment, raw material coating, feeding granulation, mold design, injection molding, degreasing, splicing and sintering. The method solves such problems as cracking and bubbling caused by incomplete degreasing in manufacturing of the large metal piece by a traditional MIM method, and prevents potential safety hazards in production when improving the quality of the large metal piece.

Description

technical field

[0001] The invention belongs to the technical field of injection molding processing, and in particular relates to an injection molding method for large metal parts. Background technique

[0002] Metal Injection Molding (MIM) is a molding method in which a plasticized mixture of metal powder and its binder is injected into a model, and it is a method of producing a new type of metal industrial product; specifically, the selected powder and binder Mixing is carried out and the mixture is then pelletized and then injection molded into the desired shape. At present, in the traditional MIM process, when the metal parts are large, it is easy to cause problems such as bubbling and cracking during the sintering process due to incomplete degreasing, and the quality of the product cannot be guaranteed. Contents of the invention

[0003] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a method for injection m...