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Forging cannot be called casting


Release time:

2023/10/31

Forging cannot be called casting. Special mold forging is called mold forging, and forging without special molds is called free forging.

Forging cannot be called casting. Special mold forging is called mold forging, and forging without special molds is called free forging. Giant forgings are generally produced in small batches, and the cost of manufacturing giant molds is too high. In addition, using molds for forging requires too large a press, and even with giant molds, there are not as large a press. At present, the tonnage of hydraulic presses in China seems to be only 50000 tons. The main reason is that China's mold forging hammer only has 16 tons, and the standard for large forging equipment is too low.

Generally speaking, China's large mold forgings mainly rely on imports. Russia's Mias has a 50 ton air hammer that can forge a 5-meter long marine crankshaft at once. However, due to his relatively old equipment, the forging accuracy is not high! There is also a method of using a clamp hammer mold for forging, which has poor accuracy. Therefore, large forgings generally use free forging.

Key words:

Forging

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