The metal injection molding process can be used to complete various parts with complex shapes, and there is no size regulation. Due to the expensive raw materials, the parts produced are relatively light parts, and the cost is also affected by the complexity of the mold degree, long sintering time, forming cycle, etc. So in the end what kind of conditions are met for parts that are suitable for MIM injection molding process.
There are mold costs in the initial stage of powder metallurgy process. Most powder metallurgy manufacturers have their own mold development departments, so they do not make profits from molds, but the cost of molds is purchased by customers themselves. MIM injection molding such as the liquid metal molding is the result of conventional powder metallurgy, usually not used to produce small volume parts. If it is a technology in the aerospace field or military field that requires MIM technology to complete, it uses less itself, and is willing to bear the cost of this assembly line, and the supplier is willing to spend time and effort to complete such a project. Usually large-capacity injection-molded parts in the field of mobile communications.
The parts are geometrically three-dimensional, which cannot be done by conventional powder metallurgy pressing, but only by the MIM injection molding process. For example, when the parts have holes, grooves, ribs, protruding and concave, etc., very special shape parts are the most valuable use of mim china technology. Conventional powder metallurgy PM, this process is suitable for two-dimensional shaped parts.
To be precise, there is no size regulation. Due to the expensive raw materials, the larger the parts used, the higher the raw mim material, and the higher the cost. Usually MIM injection molded parts are relatively small, complex in shape and thin-walled. The general weight is about 100 grams, the minimum is 1 gram, the weight is 500 grams, the size is generally controlled within 100mm, and the wall thickness is 5mm.
MIM injection molding is a process based on plastic injection molding. Basically, the parts that can be molded by plastic injection molding can be completed by MIM process, but it is not economical.
There are many factors that MIM considers. From the comprehensive evaluation of mold, manpower, unit price and development time, as well as the subsequent machining cost, it should be included in the cost. Many precision parts must be fully machined. If MIM can be used to manufacture and reduce machining, it is also very cost-effective, and it can be another matter.