Stainless steel precision casting processing work rules of temperature in casting industry friends all know that the mechanical properties of the stainless steel precision casting is higher than cast iron
, but it's worse than cast iron casting performance, belong to the said revestment precision casting and precision casting.
Its melting point is higher than other, and steel liquid oxidation, molten steel easily illiquid, contraction, actually from the practical perspective of stainless steel precision casting pipe not only applicable to various types and various alloy casting.
The temperature of the stainless steel precision casting processing rules first, is due to poor liquidity of liquid steel, we in order to prevent steel cold insulation and misrun, steel wall thickness is not less than 8 mm;
Gating system to simple structure, and section size is bigger than cast iron;
Use dry mold or hot mould;
Properly increasing pouring temperature, average of 1520 ° ~ 1600 ℃, because of the high pouring temperature, liquid steel superheat, keep long liquid, liquid can be improved.
But the water temperature is too high, can cause coarse grains, defects such as hot cracking, porosity, and adhering sand.
So generally small, thin wall and complex shape casting, the pouring temperature is about steel melting point temperature of + 150 ℃;
Large, thick wall castings pouring temperature about 100 ℃ higher than the melting point.
Stainless steel precision casting processing rules of temperature in order to prevent we produce the phenomenon such as shrinkage cavity and crack of stainless steel precision casting, these measures must be taken, to make the uniform wall thickness, but also avoid the sharp corners and rectangular structure, also need to add in the mould type with sawdust, add coke to the core, finally also need to use hollow cores and oil sands core to change the sand mold or core stainless steel precision casting processing rules of concession, air permeability and temperature.
Precision casting precision casting precision casting factory
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