Sintering is the last step in the MIM process. Sintering eliminates voids between the powder particles, making the MIM product fully densified or nearly fully densified. In the metal injection molding technology, since a large amount of binder is used, the shrinkage during sintering is very large, and the linear shrinkage rate generally reaches 13% to 25%, so that there is a problem of deformation control and dimensional precision control. This problem is particularly acute because MIM products are mostly shaped parts of complex shapes, and uniform feeding is a key factor in dimensional accuracy and deformation control of the final sintered product. The high powder shake density reduces the sintering shrinkage and also facilitates the sintering process and dimensional accuracy control. For products such as iron-based and stainless steel, there is also a carbon potential control problem in sintering. Due to the current high price of fine powder, the research on the strengthening sintering technology of coarse powder compact is an important way to reduce the production cost of powder injection molding. This technology is an important research aspect of metal powder injection molding research.
Due to the complex shape and large shrinkage of MIM products, most products still need to be post-sintered after sintering, including shaping and heat treatment (carburizing, nitriding, carbon-nitrogen osmosis, etc.), surface treatment (fine grinding, ion nitrogen). Chemical, electroplating, shot peening, etc.).
Harber MIM focuses on R&D and manufacturing of simple or complex metallic parts, MIM solution services and associated MIM injection molds. Being a professional player in PIM & MIM (powder & metal injection molding) technology in China, we have managed to develop our skills and get stronger all the time. Now we can assure to maintain high and stable quality for our PIM & MIM products to meet requirements of our clients worldwide.
Harber MIM has a 5000 squaremeters first-class MIM workshop now after deep ploughing many years in the industry. Our 100+ trained & energetic employees are integrated each MIM process like: MIM design, mold design, tool making, debinding, sintering, and surface finishing into final MIM parts inspection and assemble operations.
To speed up the products launch,Harber MIM built the MIM molding tools indoor.We are equipped with advanced facilities imported from Germany, Japan and Switzerland.We can guaranttee the precision of molds and assure tolearance and high efficiency of manufacturing with short lead time.
Some of our products have been used for tools, hardwares, electronic appliances, locks, toys, automobile parts, fasteners, spinning parts and so on.
Harber MIM has showed capabilities in:
Advanced fabrication facilities & quality inspection system
Quality control system
Rich experiences in product development and manufacturing process
Complete network of sales and service
