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1、液态锻造活塞的应用船舶、发电用中、高速柴油机的大型活塞多为高级铸铁。但是随着柴油机的高速化和高效率化,已多采用比铁轻,且比强高、导热性好的铝合金。就铝合金活塞来说,一般金属模铸造与模锻不同。前者机械性能不如锻件,但产量高、成本低、成形性好;后者机械性能好、成品率高。因此,对于爆发压力大、速度高的
1, the application of liquid forging piston Ship, power generation, medium and high-speed diesel engine piston mostly high grade cast iron. However, with the high-speed and high-efficiency diesel engine, it has been more than iron, and high strength, good thermal conductivity of aluminum. Aluminum pistons, the general die casting and forging different. The former mechanical properties than forgings, but high yield, low cost, good formability; the latter a good mechanical properties, high yield. Therefore, the outbreak of pressure, high speed