资料介绍
注塑不良以及对策
4.8注塑不良以及对策
现 象
对 策 |之间泄漏树脂 喷嘴与注口衬套 |充 填 不 足 |螺杆不后退 |凹 痕
|煳 斑 |雾 点 |溢 料 |表面不干净 |银 丝 纹 |离 模 不 良 |注 口 破 损 |翘
曲 ·弯曲 |熔 合 痕 |脆 弱 |波 流 痕 |冷 料 |碎 裂 |不匀·斑点
|气泡·空洞 |漩 纹 | |提高射胶压力 | |● | |● | | | |● | | | |● |● | |● | |
| |● | | |降低射胶压力 | | | | |● | |● | | |● |● |● | | | | |● | | | |
|提高料筒温度 | |● |● |● | |● | |● | | | |● |● |● |● |● |● |● | |● |
|降低料筒温度 | | |● |● |● | |● | |● | | |● | |● | | | | |● | |
|提高保压，延长保压时间 | |● | |● | | | |● | | | | |● | |● | | | |● |● |
|降低保压，缩短保压时间 | | | | | | |● | | |● |● |● | |● | | |● | | | |
|提高喷嘴的温度 | |● | |● | |● | |● | | | | |● | |● |● | |● | |● |
|关闭喷嘴 | |● | | | | | | | | | | | | | | | | | | | |完全封闭喷嘴部 |● |●
| |● | | | | | | | | | | | | | | | | | |提高螺杆旋转速度 | |
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