2016年6月16日星期四

Short Shot in Metal Injection Molding


It is well known for metal injection molding supplier that short shot is a very common defect in powder injection molding process. Today we would like to discuss the reason for short shot during MIM process. Welcome your supplement.
Phenomenon
--material is not completely filled the cavity
Possible reason for short shot in injection molding
l   Inadequate  measurement set
l  injection pressure is too small
l  injection speed is too slow or injection time is too short
l  mold temperature or tube temperature is not enough
l  the back pressure is too low or no back pressure caused screw idling
l  too much release agent
l  Too short  flow distance or bad  illiquidity of material

l  sprue or runner is too small

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