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锻造水压机的保护垫板是安装于活动横梁上的重要另件之一,其作用是用以保护活动横梁以及必要时作为镦粗板直接用以镦锻钢锭。鉴于保护垫板的上述作用,而大型水压机的保护垫板又不宜于经常更换,故对保护垫板材质选用广泛引起了重视。援罗锻造水压机的保护垫板原设计选用ZG5CrMnMo,对于6000吨锻造水压机,其保护垫板净重37吨,外形尺寸3900×2700×400毫米,由于工件大,铸造时冷铁的漂移很难控制,有的竟外露于工件的加工表面;再者因冒口大、冷却亦慢,冒口下部碳及合
Forging hydraulic press plate is installed on the movable beam one of the important components, its role is to protect the moving beams, and if necessary, as an upsetting plate for upsetting steel ingot directly. In view of the above-mentioned role of the protection of the plate, and large hydraulics protection plate is not suitable for frequent replacement, so the choice of protective pad material has attracted wide attention. Auxiliary Luo forging hydraulic plate protection plate original design selection ZG5CrMnMo, 6000 tons forging hydraulic machine, the protective plate net weight of 37 tons, dimensions 3900 × 2700 × 400 mm, due to the workpiece, the cast iron cold drift is difficult to control, Some actually exposed on the surface of the workpiece processing; Furthermore, due to riser, cooling is also slow, lower riser carbon and co