Which is better for powder metallurgy MIM injection molding?

There are too many manufacturers, but there are only a few large powder metallurgy manufacturers. For the purchasing staff of some companies, small companies tend to focus on the price, and the cooperative price and stability between large companies are also the goal.

For the current market situation, the price of iron powder is unstable, rising from 6000 last year to 8-9000. Even if the price rises, it is difficult for people with money to buy iron powder. If this happens to the powder metallurgy manufacturer, the supply will not be available, even if the price of * * * is high, the purchaser will not cooperate with it. In the face of the shortage of iron powder in major iron and steel plants, the first thing is to maintain the supply of large customers, so it is normal for small customers to have money but cannot buy iron powder. Lianyungang Dongmu New Materials Co., Ltd. has met many customers who come to inquire about the price, and the products are all powder metallurgy products that have been mass produced before. The development of secondary supply is due to the lack of product supply. As the operating cost of a small enterprise is much lower than that of a large factory, it will have a great advantage in terms of price, but it is slightly less than that of a large factory in terms of quality and assurance. If the enterprise loses because of the quality problem of powder metallurgy products, it is difficult for small powder metallurgy manufacturers to repay. In the case of similar prices, many enterprises will choose appropriate powder metallurgy manufacturers to cooperate.

PM compaction and powder injection molding are common in powder metallurgy. Today, I would like to share with you about powder injection molding.

PIM is composed of metal powder injection molding (MIM) and ceramic powder injection molding (CIM). It is a new part processing technology that introduces plastic injection molding technology into the field of powder metallurgy. Plastic products in daily life are necessities with complex shapes and low prices. Because of their low strength, they can only be used as toiletries, gloves, etc. Therefore, in order to improve the performance, metal and ceramic powders are added to the plastics to obtain powder metallurgy products with higher strength and good wear resistance. For so many years, powder metallurgy manufacturers have been improving the density of solid particles produced by powder injection molding with the limit of * * *.

In Lianyungang Dongmu New Materials Co., Ltd., it is a powder metallurgy manufacturer with PM and MIM injection molding technologies. The 1 billion yuan invested in 2021 will expand the MIM injection molding workshop, which will be put into full use in September this year. The main purpose is to mix the metal powder and binder evenly at a certain temperature to make the feed. After injection molding, the blank will be obtained. After degreasing, the final MIM injection molding powder metallurgy parts will be sintered. There are many characteristics of the finished MIM injection molding parts.

1. Like plastic injection molding, parts can be made with very high degree of freedom of geometric shape, which is used for small parts with high requirements on density distribution, size and accuracy. Because the price of raw materials is conventional and the price of powder metallurgy is expensive, for the sake of production cost, the parts usually produced are about 2-200g, but the MIM injection molding technology itself has no size limit.

2. Alloying has good flexibility, which can save costs for parts that are too hard, brittle, difficult to cut, polluted, and expensive raw materials.

3. The selection of materials is very wide, and the utilization rate of raw materials is high. It is suitable for low alloy steel, stainless steel, high-speed steel, copper base alloy, ceramics, high ratio tungsten alloy, die steel, etc. Due to the different properties of injection molded parts, if appropriate metal components are added, the pollution in production will be much less than that in other processes.

4. High degree of automation, simple process, and continuous large-scale production of injection molded parts. MIM injection molding is produced by using molds, and the subsequent parts produced rarely need machining, reducing the subsequent processing technology. At the same time, the consistency comparison and repeatability of products are greatly guaranteed. MIM injection molding can realize multiple cavities in one mold, and can produce multiple injection molding parts blanks at one time to improve efficiency and reduce cost.

5. MIM injection molding products have high quality stability and reliable performance. Compared with powder metallurgy pressing, the density distribution of parts is uniform, which can reach 95% - 98%. The subsequent work can be decarburized, heat treated, tempered, etc. with the use performance of parts, which is the same as the subsequent process of powder metallurgy pressing.

6. * * * It is important to compare with other processes, such as machining, precision casting and powder metallurgy pressing. The internal structure of MIM injection molded parts is more uniform, with precision, smooth surface, and high mechanical properties of density, strength and elongation. In powder metallurgy pressing, if the structure is three-dimensional, it cannot be completed. And for some heterosexual parts, the density of parts may be inconsistent due to inconsistent powder filling, so the parts that cannot be completed in powder metallurgy PM pressing are usually completed by MIM injection molding.