Our company has established a product development and mass production system based on the metal injection molding process by fusing the isopicnic molding technique the company has developed for injection molding with the MIM technology (Witeck process) the company introduced from Witeck, Inc. With this system, the company has already succeeded in developing the world's largest precision machine part (weight: 600 grams) and mass-producing extremely small parts.

MIM technology as a manufacturer of high-quality precision parts of the near-net shape technology, with conventional powder metallurgy, precision machining and casting methods unmatched advantages:

Three-dimensional shape of the complexity of the plastic injection molding with a very High-precision (0.3% ~0.1%), the general need for follow-up processing

High-precision(0.3%~0.1%), the general need for follow-up processing

Relatively high density (¡Ý 95%)

Relatively high density (¡Ý 95%) Good surface finish, 32 ms or better Product strength, hardness, elongation, and other mechanical properties, wear resistance, fatigue resistance, uniform organizations Alloy with a wide choice of available technology to other manufacturers could not produce a special performance parts Good mechanical properties, and the forging of a very similar materials With a high degree of automation, simple process, the quality of stable and continuous high-volume production Very cost competitive advantage, usually to save more than 20%, and shorter delivery times

The process is friendly to the environment.

The metal machining process produces chips and waste cutting oil. The casting process also generates waste from the sprue, runner, mold, etc. Even with the die-casting process that is a comparatively efficient process, the occurrence of fins, etc. Cannot be avoided. By contrast, it may be said that the MIM process is an exceptionally clean process that produces minimal waste.

Product shapes for which the process is suitable

Normally, a plastic product is made by using a plastic molding machine, which requires suitable molds. Any product can be made by the MIM process as long as it can be shaped by suitable molds.

One of the salient features of the MIM process is that it can be used relatively easily to manufacture products which can hardly be made by any other process (e. G., products of complicated shape or three-dimensional shape, products requiring much machining, products having small holes, blind holes, etc. ).

The MIM process is used to make not only ordinary machine parts but also gears, screws, keyways, and cutters.

Product size and thickness

The products that have been manufactured by the MIM process widely differ in weight, from 0.03 gram to 600 grams per piece.

Concerning the product thickness, the MIM process can effectively be applied when it is 4 mm or less. If the product is larger in thickness, it is susceptible to shrinkage and internal defects. In this case, therefore, it is necessary to reduce the thickness and provide a rib, etc. To secure the required strength.

The MIM process can be applied to any material as long as the suitable metallic powder is available. At present, the process is applied to the following materials.

SUS304 SUS316L SUS630

Fe8%Ni

SNCM415 SKD11 SKH51

Copal

Cemented carbide

Dimensional tolerance

The maximum dimensional tolerance is +-0.3%. For example, 5 +-0.015, 10 +-0.03, and 20 +-0.06 are completely acceptable. With the MIM process, therefore, it is possible to significantly reduce the amount of machining required of parts having a complicated shape.

Concerning the hole diameter, Class 8 tolerance is acceptable. Depending upon conditions, even Class 7 tolerance is allowable.

When it comes to small holes, the MIM process is especially suitable. It allows for even 0.1 mm holes.