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通常采用的模锻(有飞边模锻),无论在生产力方面和锻造质量方面都比自由锻造先进。但是,因有飞边而带来的金属浪费(达10％～15％,甚至80％),以及需要配备切边设备,显著地提高了产品的成本。因此,当无飞边锻造的经验开始传播以后,即引起了锻造生产人员的普遍注意。由于在机车车辆工业企业中模锻比重不大,尤其是在检修工厂,所以,在自由锻锤上引用无飞边、小飞边锻造工艺,尽管对某些形状的锻件有局限性,然而在保证获得规定的锻件几何形状和尺寸、合适的金属纤维方向和状态、良好的
The commonly used forging (with flash die forging), both in terms of productivity and forging quality than the free forging advanced. However, metal waste (up to 10% to 15%, or even 80%) due to burrs and the need to have trimming equipment significantly increase the cost of the product. Therefore, when the experience of no flash forging began to spread, it has aroused the widespread attention of forging production staff. Due to the small proportion of die forging in the rolling stock industrial enterprises, especially in the maintenance of the factory, so the free forging hammer reference flashless, small flash forging process, although for some shapes forgings have limitations, but in Ensure that the required forging geometry and dimensions are obtained, the proper orientation and condition of the metal fibers, good