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The process of the forging that includes altering simple solid blanks of rod and other forms into more different articles whose designs match with cavities in special tools called dies (tools). Forging is the procedure in which steel is heated and is formed by plastic deformation by appropriately implementing compression force.

Close die forgings also referred to as impression die forging is a metal deformation method that uses pressure to compress a piece of metal to fill an enclosed die impression. In this process a sequence of impression dies are used to change the shape of the content into the final actual shape and form. The type of component and need for heat treatment can determine the number of passes the item requires through the dies. The forged steel part will now change the geometric form of the tools provided a total filling of the die cavity took place during the procedure. The procedure of forcing steel to flow into and load the impressions in the tools will also change the materials framework of the metal. The creation of favorable feed structure through managed material deformation should always be a consideration in the design of an impression Close die forgings process. One feature of Close die forgings is the formation of fin around the forged element. During the design of the steel forging procedure the volume of the first work piece is made a little bit greater than that of the impression die cavity. As the tools close and the work steel flows into and fills the contours of the impression some excess substance will flow out of the tools and into the area between the two die. This will made a thin plane of steel all around the work at the separating line of the forged item. These products are available in size from a few ounces to over 10,000 pounds