Advantages and disadvantages of casting parts
Mar 17,2023
Casting refers to the process of pouring a substance that is liquid at room temperature but soon solidified into a specific shaped mold for solidification. The cast material is mostly a metal that is originally solid but heated to a liquid state (such as copper, iron, aluminum, tin, lead, etc.), while the material of the mold can be sand, metal, or even ceramics. The methods used may vary depending on the requirements. The product produced by this method is called a casting. Metal molds can cast ductile iron and gray iron.
advantage:
It can produce parts with complex shapes, especially blanks with complex internal cavities (such as heating). 2. It has a wide adaptability and can be used to cast metal materials commonly used in industry. A few grams to several hundred tons. 3. Wide sources of raw materials. The price is low. Scrap steel, scrap parts, and chips. The shape and size of the casting are very close to the parts, reducing the amount of cutting and belonging to the category of less cutting processing. In metal molds, due to good heat dissipation conditions, the fluidity of the metal liquid is definitely poor, and the stress is also high, making thin-walled parts prone to white spots. Metal molds can cast ductile iron and gray iron.
Disadvantages:
The mechanical performance is not as good as that of forgings (with coarse structure and many defects). In sand casting, single pieces, small batches, and high labor intensity of workers. The quality of castings is unstable, with multiple processes and complex influencing factors, which can easily lead to many defects.
Application:
Widely used: agricultural machinery 40-70% machine tools: 70-80% weight castings.
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