The difference between stainless steel castings and stainless steel forgings

1. Stainless Steel Castings have good wear resistance and shock absorption function, because graphite in cast iron is good for lubrication and oil storage, so it has good wear resistance. Also due to the presence of graphite, gray cast iron has better damping properties than steel.SCZY company introduced that stainless steel castings have good process performance. Because gray cast iron has high carbon content and is close to eutectic composition, it has relatively low melting point, good fluidity and small shrinkage rate, so it is suitable for casting complex structure or thin-walled castings.

2. Since graphite makes it easy to form chips during cutting, the machinability of gray cast iron is better than that of steel. Precision Casting is a process in which metals are smelted into liquids that meet certain requirements and poured into molds, cooled and solidified, and cleaned to obtain castings with predetermined shapes, sizes and properties.

3. After forging, Stainless Steel Forging Parts can improve its structure and mechanical properties. After the casting structure is thermally processed and deformed by forging, due to the deformation and recrystallization of stainless steel, the original coarse dendrites and columnar grains become equiaxed recrystallization structures with fine grains and uniform sizes, so that the original ingots in the steel ingot Segregation, porosity, pores, slag inclusions, etc. are compacted and welded, and the structure becomes tighter, which improves the plasticity and mechanical properties of the metal.

4. The mechanical properties of stainless steel castings are lower than those of forgings of the same material. However, the forging process can ensure the continuity of the metal fiber structure, so that the fiber structure of the forging is consistent with the shape of the forging, which can ensure that the parts have good mechanical properties and prolong the service life. Precision die forging, cold extrusion, warm extrusion and other processes are used. The forgings produced are unmatched by castings.

5. Precision casting is a relatively economical blank forming method, and it can show its economical efficiency for parts with complex shapes. Such as cylinder blocks and cylinder heads of automobile engines, ship propellers, and exquisite artworks. Some difficult-to-cut parts, such as nickel-based alloy parts of gas turbines, cannot be formed without casting.

In addition, the size and weight of cast parts have a wide range of adaptation, and the metal types are almost unlimited; while the parts have general mechanical properties, they also have comprehensive properties such as wear resistance, corrosion resistance, and shock absorption. Rolling, welding, punching, etc. cannot be done. Because the casting blank is almost formed, the purpose of free machining or a small amount of machining reduces the cost and reduces the time to a certain extent. Casting is one of the basic processes of modern manufacturing industry.