Forging Solid Metal is Better Than Casting Liquid Metal
Forging is the process of forming the shape and size of metal by plastic deformation, and can be done while the temperature of the metal is hot, cold, or warm. The thermal and mechanical energy applied to the surface of the material during metal forging changes the shape of the metal while it is still in a solid state. The most common process of cold forging at or near room temperature is called impression die forging, also known as closed die forging. This method places the solid metal into a die, also known as the mold, and then utilizes a hammer to pound it in a rapid sequence, forcing it into the die.
Casting on the other hand, requires for the metal to be melted into a liquid state, and then poured into a mold or vessel to achieve the desired shape. However, the casting method cannot produce the level of strength and precision that the process of forging can create. The unpredictability of casting results causes limited ability to prevent the formations of metallurgical defects of the metal parts due to the lack of grain flow and directional strength. The method of casting depends greatly on the monitoring and control of the melting and cooling processes, or else non-uniform heat treatment will occur and will affect the quality and precision of the finished products. Forging, however, can produce metal parts that have guaranteed strength and allows for the ability to refine imperfections during the process.
Forging produces more predictable responses to heat treatment unlike casting, and the results of the products from forging are more reliable than those of casting. To learn more about forging or to submit an RFQ to a leading forging company manufacturer, please contact DF Precision Inc. at 626-571-7988
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