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Solidification characteristics of metal fluids for machine tool castings

2022-12-28

We are familiar with the process processing there are three: disappearing mold casting, sand casting and metal casting, which metal casting cooling speed is the fastest, cooling curve up and down does not appear eutectic platform, the number of graphite in the metallographic organization is greatly reduced, extended machine tool castings radially generated a large number of fine primary and secondary carbide, its hardness and impact toughness is significantly better than the other two casting methods.

latest company news about Solidification characteristics of metal fluids for machine tool castings 0

The results of vanishing mold casting and sand casting are relatively close, with only slight differences. Before the eutectic reaction, the cooling curves of both almost overlap, but the difference between the two increases from the beginning of the eutectic reaction. Compared with sand casting, the co-crystal reaction time of vanishing die casting is relatively longer, and the cooling rate after the co-crystal reaction is relatively slower, so the co-crystal matrix of vanishing die casting is coarser, the number of carbides is reduced, the number of graphite is increased, and the corresponding hardness and impact toughness are reduced.

latest company news about Solidification characteristics of metal fluids for machine tool castings 1

The solidification characteristics of vanishing mold casting machine tool castings.

1, disappearing mold machine tool castings cooling solidification speed is slow, slower than ordinary sand casting.

2, disappearing mold casting in the negative pressure casting, casting steel is good, casting cast iron parts will not appear up the body, castings since the shrinkage capacity, greatly reducing the appearance of the casting shrinkage tendency.

3, disappearing mold casting machine tool casting cooling rate is slow, castings by casting resistance is small, less than clay sand casting, so the formation of castings stress is small, warm tendency is small.

Shenzhen Perfect Precision Product Co., Ltd.

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