Casting is liquid forming, and forging is a plastic deformation process. Forging shaped workpieces can improve the internal structure of the structure. The mechanical properties are good and the grains are uniform. Important laborious workpieces must be forged. Casting will cause structural segregation and organizational defects. Of course, casting has his benefits Forging of complex workpieces is difficult to open the mold, so casting is adopted.
Forged steel and cast steel are mainly steel forming processes, and the processing forms are different:
Cast steel refers to a type of steel casting produced by the founder. Cast steel is a type of steel used for casting castings and cast alloys. Cast steel is divided into cast carbon steel, cast low alloy steel and cast special steel. Cast steel is mainly used to manufacture parts with complex shapes that are difficult to forge or cut and form, but require high strength and plasticity.
Forged steel refers to various forging materials and forgings produced by forging methods. The quality of forged steel parts is higher than that of cast steel parts, and it can withstand a large impact force. The plasticity, toughness and other mechanical properties are also higher than that of cast steel parts, so all important machine parts should use forged steel parts
In summary, forged steel parts are cold-worked by cold forging, cold heading, forging, forging, etc., which makes the internal structure of the material more dense, improves the structure of the material crystal, eliminates the gap, and thus greatly improves the material Strength and toughness. Steel castings are melted into hot metal by high-temperature melting of iron and steel, poured into pre-made molds, and then molded after cooling. The material has many impurities, the material is brittle, the strength is poor, the internal stress is large, and the internal structure is loose. Forged steel parts are generally small in size and easy to process and forge. For larger parts that do not require high strength and cannot be forged, they are generally processed by casting with lower cost.
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