Mold Tech ← 返回列表 | 查看原帖讨论 Gate Bushing and Nozzle Maintenance for Injection Molders 2026-05-31 Proper maintenance of gate bushings and nozzles extends mold life and improves part quality. Gate Bushing Maintenance: - Clean gate area after each production run using brass brush (never steel) - Check gate diameter monthly - wear of 0.05mm+ can cause flash - Polish gate surface when flow marks appear - Replace bushings when gate wear exceeds 0.1mm Nozzle Care: - Inspect nozzle tip for damage before each mold setup - Clean nozzle tip with copper wire brush while hot - Check nozzle alignment with sprue bushing - misalignment causes drool - Apply anti-seize compound on nozzle threads (max 350C rated) Common Problems: - Drooling: check nozzle tip temperature and back pressure - Stringing: adjust nozzle retract timing - Gate blush: reduce injection speed at gate switch point Scheduled maintenance every 500 hours keeps your hot runner reliable. 📎 延伸阅读 • 欢迎来到 模极社 - 模具行业专业社区！:wave: • 注塑件缩水和变形的调机思路 • 小模具厂如何在价格战中活下去？ 分享到： 微信 微博 QQ 模极社 MJ7.CN | 查看原帖讨论 推荐： 论坛 | 人才招聘 | 模具知识 know.mj7.cn — 制造业知识参考
