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What are the advantages and disadvantages of stainless steel precision casting?

Edit:Xiangyang Liqiang Machinery Co., Ltd.UpDate:2020-03-03

Stainless steel precision casting has worse properties than pig iron, its melting point is higher, air dissolution is easy to oxidize, the liquidity of the molten iron is poor, and it is widely gathered. Stainless steel precision casting can be forged with many types and various aluminum alloys. In the case of precision casting of stainless steel, we all understand the advantages and disadvantages of stainless steel plate when it is precision casting.

1. Because the precision casting of stainless steel plate is much larger than pig iron, in order to avoid the shrinkage and casting defects of castings, most of the countermeasures such as feeders, cold iron and subsidies are used in the forging process to maintain order condensation.

2. Due to the poor dissolving flowability, in order to avoid cold insulation and insufficient pouring of stainless steel castings, the thickness of stainless steel castings must not be less than 8mm;

Use dry metal or hot metal mold casting; moderately increase the pouring temperature, generally 1520 ° ~ 1600 ° C. Due to the high pouring temperature, the superheat of the molten iron is large, the time for maintaining the liquid is long, and the flowability can be improved. However, if the pouring temperature is too high, it will cause shortcomings such as strong crystals, thermal cracking, vent holes and slag inclusion.

Stainless steel plate has the advantages and disadvantages of precision casting. It should be uniform in wall thickness, prevent bevel and oblique structure, add wood chips to metal mold casting sand, add coke to core, and choose hollow core and oil sand core. Wait to improve the tolerance and air permeability of the sand mold or core.

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