Die Maintenance: Rust-proofing & Care Routines
冲压模具的防锈与保养制度
标签：模具保养, 防锈, 弹簧更换, 一模一档, 延寿
冲压模具是长寿命资产，保养制度四条：①停机超过 48 h 的模具下机擦拭后涂薄层防锈油（5–10 μm 即可，厚了下次上机要除），存于 20–40 °C、湿度 <60% 模房；②导柱每 5000 冲次补锂基脂，加油前擦净旧脂防磨粒混入；③卸料弹簧按压缩寿命 30 万次整组到期更换，单换会造成受力不均；④"一模一档"——记录累计冲次、刃磨量与故障史，刃磨决策不再靠老师傅手感。铜料冲压虽无锈蚀介质，但模具钢本身怕潮，梅雨季尤须严格执行。
Dies are long-life assets; four maintenance rules: (1) any die idle over 48 hours gets wiped and oiled with a thin rust-preventive film (5–10 μm — thick films must be removed at next setup), stored at 20–40 °C below 60% humidity; (2) grease guide pillars every 5,000 strokes, wiping old grease first to keep grit out; (3) replace stripper springs as a full set at their 300k-cycle life — mixed ages load unevenly; (4) keep a per-die ledger of cumulative strokes, grinding amounts and faults so regrind decisions stop relying on feel. Copper strip is benign, but the tool steel itself fears humidity — enforce strictly through rainy seasons.