Molds & Tooling
7 조회수
ABS glass fiber orientation type warpage
문제 현상
GF-ABS flat plate products warp along a fixed direction, adjusting cooling has little effect, and the repeatability is strong.
원인 분석
The glass fibers orient along the flow direction, and the shrinkage rates in the flow direction and transverse direction differ greatly, forming anisotropic warpage; the gate position determines the orientation pattern, so the warpage direction is stable and difficult to cure by cooling.
해결 방법
①Adjust the gate position to change the material flow/fiber orientation; ②do Moldflow fiber orientation analysis; ③balance holding pressure and cooling; ④change to a grade with lower fiber content or mineral filling when necessary; ⑤structural symmetric design.
핵심 요약
GF-ABS orientation-type warpage is broken by 'gate design', not by hard pressing with cooling: once the warpage direction is fixed, you should go back and review the gate and orientation, rather than repeatedly trying mold temperatures.
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