Powder injection molding process

A powder injection molding and process technology, applied in the field of processing technology, can solve the problems of unenvironmental material technology, high material waste rate, high scrap rate of finished products, and achieve the effects of shortening product manufacturing cycle, less material waste, and low price cost.

CN104070167AActive Publication Date: 2014-10-01王统
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-10-01
Patent Text Reader

Abstract

The invention relates to a powder injection molding process. The method includes steps of a) mixing, b) injection molding, c) degreasing and sintering, d) quenching and e) subzero processing. In the step a), metal powder materials, anti-friction metallic elements and organic binding materials are fed into an internal mixer and, under an airtight environment and at the temperature of 180 degrees, are stirred to be formed into particles. In the step b), a mold with a hole pattern and a thread pattern is adopted, and the particles are injected into an injection opening of the mold by an injection molding machine. In the step c), a processed semi-product is put into a sintering furnace to be subjected to degreasing and sintering. In the step d), the processed semi-product is put into a vacuum furnace to be subjected to quenching. In the step e), the processed semi-product is subjected to subzero processing. The powder injection molding process is adopted to produce guide rails and sliding blocks to lead to fewer processes such as drilling holes and tapping, thus the process is simple and environment-friendly, production cycle is shortened, and production speed is increased.
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Description

technical field

[0001] The invention relates to a processing technology, in particular to a powder injection molding technology. Background technique

[0002] The structure of the linear guide rail has two basic components, one as a guide is a fixed component (rail), and the other is a moving component (slider). The guide rail as a guide is hardened steel, which is placed on the installation plane after fine grinding. The geometry of the cross section is more complicated, because grooves need to be machined on the guide rail to facilitate the movement of the sliding assembly. The slider wraps the top and two sides of the guide rail. The linear guide uses rolling steel balls as the power transmission interface between the guide rail and the slider. , because the rolling steel ball is suitable for high-speed motion with small friction coefficient and high sensitivity, which meets the working requirements of the moving parts, and can perform infinite rolling cycle motion, and t...

Examples

Embodiment Construction

[0017] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] The invention discloses a powder injection molding process, the specific process is as follows:

[0019] The first step, mixing: use an internal mixer, put metal powder materials with rust resistance, corrosion resistance, and wear resistance, wear-resistant metal elements, and organic adhesives into the internal mixer, and put them in a closed environment , the temperature is controlled at 180 ° C, stirred, and produced into granules;

[0020] The second step, injection molding: use a mold with a hole mold and a threaded mold, a...