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螺旋压力机是锻锤的一种重要型式,它有两个特殊的优点:第一是,每一冲程的成形能量比任何成形机械的大,因此,它能以中等打击力和长的成形冲程生产致密的锻件,也能用高打击力和短成形冲程生产薄零件。第二个优点是,具有不固定的下死点,这下死点仅取决于模子和工件。即使温度发生变化,但所生产的锻件具有一致的厚度,因此不用调节就能够得到一致的产品。螺旋压力饥特别适于精锻,如锻造透平叶片。此外,虽然产品需要经常更换,但由于螺旋压力机的下死点不固定,因此更换模子以及新模子的调整和试验所需的费用相当低。
Spiral presses are an important type of forging hammer and have two special advantages: First, the forming energy per stroke is greater than for any forming machine, so it can be used with medium strike force and long forming stroke The production of dense forgings also enables the production of thin parts with high striking force and short forming stroke. The second advantage is that with a fixed bottom dead center, this bottom dead center only depends on the mold and the workpiece. Even if the temperature changes, but forgings produced with a uniform thickness, so you can get a consistent product without adjustment. Spiral pressure hunger is particularly suitable for precision forging, such as forging turbine blades. In addition, although the product needs to be replaced frequently, the cost of changing and modifying the mold and testing of new molds is relatively low because the bottom dead center of the screw press is not fixed.