Today, Shandong No.2 Machinery shows some reasons which cause the discoloration of MIM injection parts.

Equipment is the very fact for influencing MIM parts color.

(1) The equipment is not clean. Dust deposits on hoppers to discolor the materials.

(2) Thermocouples, temperature controllers or heating systems are out of order, resulting in temperature control failure.

(3) There are obstacles in the barrel, which is easy to degrade the plastics. There are metal dregs in the barrel or groove, which make the plastics discolored during continuous grinding.