模锻锤操作规程
适用机型: C21-1(M211),17KПK
一、认真执行《锻压设备通用操作规定》。
二、认真执行下述有关补充规定:
(一)工作前认真作到:
1、检查砧座、模座、模具、锤杆、锤头和立柱等应完好无裂纹。楔铁紧固牢靠。立柱导板与锤头的间隙应符合规定(一般不大于0.5毫米)。
2、按所作记号检查锤杆下端面到锤头燕尾合合面间的距离Hmin不得小于表2-3规定值。表2-3 单位:mm 设备型号 Hmin 设备型号码 Hmin M211
3、检查锻模的封闭高度hmin(不计燕尾高度)不得小于表2-4规定值。表2-4 单位:mm 设备型号分上下模具hmin 设备型号码分上下模具hmin M211
4、应将锤头、锤杆、模具等预热。预热温度一般为:锤头60°С,锤杆150°С,模具150°С~200°С将汽缸内冷凝水放掉。用少量蒸汽把汽缸、配汽阀和节汽阀等、加热。 5、作空运转试车时,先开排汽阀门,后开进汽阀门,提升锤头,检查锤头摆动情况。轻击锻锤检查各部松动情况。
(二)工作中认真作到:
1、夹持锻件应注意夹紧。钳子不准正对身体。锻件必须正确地放在模子内进行锻打。
2、不准重击空锤,不准上撞保险活塞,不准锻打温度低于900°С的锻件。
3、锤头不准长时间空运行。锻锤暂不工作时应将锤头置于模具上,同时烘烤模具和锤杆。
4、绝对禁止:①在有毛病(如锤头等有裂纹)锻锤上进行工作。②不按规定程序擅自打开节汽阀。对已打开节汽阀的锻锤不予照管。③在锻锤砧座周围堆放烧热的锻件。④在热模座、热锤头上装冷模具、冷楔铁。⑤调整模具时动靠山板及在靠山板或模具结合处加垫。
5、紧固楔铁时,应按表2-5规定选用撞锤的重量。不能以大撞小。表2-5 锻锤吨位 1~2吨 3~5吨 5~10吨 10吨以上撞锤重量(公斤) 500 1000 1500 1500
(三)工作后,应将锤头缓缓落下置于模具上。
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