1. Advantages: stainless steel casting has excellent corrosion resistance and oxidation resistance, has good mechanical properties and wear resistance, and is often used to make various high-end mechanical equipment parts and so on.
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2. Disadvantages: The material of stainless steel casting parts is relatively hard, the processing is difficult, and there is a tendency to cold crack, and the surface thickness of the polished processing will also be affected.
In summary, stainless steel casting parts, as a common machining part, have many advantages and disadvantages. Its advantage lies in the excellent characteristics of the material and the flexibility of the manufacturing process, while the disadvantage lies in the manufacturing cost and processing difficulty. Therefore, in practical applications, it is necessary to select the appropriate casting technology and materials according to the specific conditions and requirements of use in order to obtain the best processing results and performance.
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Friends occupied in casting industries know that stainless steel precision casting is better than iron casting in mechanical properties while not in castability. So it is called investment casting or precision casting. Its fusion point is much higher than others because molten steel is easily oxidated with bad liquidity and large shrink. Actually, stainless steel precision casting is fit for all types of alloy castings also.
Foremost, due to its bad fluidity, the wall thickness of steel casting can not be less than 8mm and the structure of pouring system should be simple with larger sectional dimension than iron casting to prevent cold lap and misrun. Besides, it need using dry mold or hot mold and raising the pouring temperature, generally ° ~ ° C to improve its fluidity because high pouring temperature makes superheat degree of molten steel to maintain liquid for a long time. But too high temperature will cause coarse grain, hot crack, porosity and sticky sand and other defects. So for general small, thin-walled and complexly shaped casting, its pouring temperature is about the melting point of steel temperature + 150 ℃; for large, thick-walled casting, its pouring temperature should be about 100 ℃ higher than its melting point.