Marine Deep-drawn Copper-alloy Components
船用铜合金深冲部件
标签：船舶, 海水冷却, 铝黄铜, 防脱锌, 深冲应用
船舶海水系统的滤器壳、仪表罩常用 HAl77-2 铝黄铜或 CuNi10Fe1Mn 铜镍合金深冲：壁厚 1.2–2 mm、拉深比 ≤1.6、凹模圆角 R8–R12，润滑用石墨基极压脂（海水工况禁氯系以防点蚀）。成形后氩弧焊接管嘴，气密试验 0.2 MPa 保压 10 min 无泄漏。铝黄铜的脱锌腐蚀按 EN ISO 6509 判定（脱锌深度 ≤25 μm 合格），认证批次可上船。单件批量 200–500 只的小批量船配市场正适合深冲代工厂。
Marine seawater-system strainer bodies and instrument housings are deep-drawn from HAl77-2 aluminium brass or CuNi10Fe1Mn: 1.2–2 mm wall, draw ratio ≤1.6, die radius R8–R12, graphite-based EP lubricant (chlorinated oils banned in seawater service — pitting risk). Nozzles are GTAW-welded; air test 0.2 MPa for 10 min. Dealloyation is judged per EN ISO 6509 (≤25 μm depth passes) and certified lots go aboard. The 200–500-piece small-series marine market suits job-shop drawing well.