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color, modified, material material plastics injection shot molding good phenomenon and countermeasures
Date: 2019-09-12 11:53
Views: 3840
Source: Internet
plastics Raw Materials in injection shot molding process in 时常会发生 molding defect, is need solution this defect phenomenon, 首先必 must understanding phenomenon material 理, chemical 变化, rear has system can can causes, below/following is for color plastics, modified plastics and Raw Materials plastics molding defect important methods.
染 color plastics
injection shot molding product in molding process in various defect causes large lower:
(1) molding material (resin)本 property 质 致.
(2) molding conditions selection 不当.
(3) mold design, made as 不完备.
(4) molding product design upper 不完备.
(5) injection shot molding machine can force 不足.
实际 upper, molding defect causes that mono pure, has or above causes meanwhile 引起. causes or countermeasures has 赖丰富 操 as experience or as 业者 直觉, 否则想 need speed causes 并处置 is parts very difficult 事.
filling 不足, short 射:
causes:
1, filling amount 不足
2, filling can force 不足
3, filling retardant 塞
molding conditions, molding machine 械:
1, adjustment molding amount
2, high formed temperature degree
3, increase injection shot pressure, injection shot time
4, plastics molding machine is retardant 塞
5, injection shot is has material mixed or retardant 塞, must increase injection shot 嘴孔径
molding product design type
1, runner, gate add large
2, good gas 口
3, 避免极端 thin 肉 部 separation
4, increase thick, strong/high 支柱
5, cold material material add large
6, gate is balanced
plastics Raw Materials (resin)
1, flow property
2, add lubricant
染 color plastics
injection shot molding product in molding process in various defect causes large lower:
(1) molding material (resin)本 property 质 致.
(2) molding conditions selection 不当.
(3) mold design, made as 不完备.
(4) molding product design upper 不完备.
(5) injection shot molding machine can force 不足.
实际 upper, molding defect causes that mono pure, has or above causes meanwhile 引起. causes or countermeasures has 赖丰富 操 as experience or as 业者 直觉, 否则想 need speed causes 并处置 is parts very difficult 事.
filling 不足, short 射:
causes:
1, filling amount 不足
2, filling can force 不足
3, filling retardant 塞
molding conditions, molding machine 械:
1, adjustment molding amount
2, high formed temperature degree
3, increase injection shot pressure, injection shot time
4, plastics molding machine is retardant 塞
5, injection shot is has material mixed or retardant 塞, must increase injection shot 嘴孔径
molding product design type
1, runner, gate add large
2, good gas 口
3, 避免极端 thin 肉 部 separation
4, increase thick, strong/high 支柱
5, cold material material add large
6, gate is balanced
plastics Raw Materials (resin)
1, flow property
2, add lubricant
