Q & A details -Do you know cold forge process?
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Do you know cold forge process?

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Do you know cold forge process?

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  • 0086299725

    0086299725 2017-11-16 09:10:03

    Cold forging is one variation of the forging metal-shaping process that involves forming or shaping metal parts through a process of applying powerful, localized compressive forces. Cold forging is carried out with the metal generally kept at or slightly above room temperature with the temperature always maintained at or below three-tenths of the recrystallization temperature of the metal being shaped. The compressive forces involved in cold forging may be applied by hand with a hammer or by powered sources, such as drop forge machines. In most cases, the metal is forced into a die in the shape of the finished product or around open templates or jigs. Cold forging offers several distinct benefits over hot forging processes, which include better surface finish, improved dimensional stability, and lower production costs. Forging is one of the oldest metal shaping processes known to man. The process of forging metal involves beating or hammering a workpiece over or into a die, template, or jig, forcing the metal to flow into the desired shape. Forging is generally divided into three process types based on the temperatures to which the metal is heated prior to forging. These are hot, warm, and cold forging, with hot and warm processes employing workpiece temperatures ranging from several hundred degrees to over 2,000° Fahrenheit. Cold forging, on the other hand, sees the working steel heated to no more than three-tenths of its recrystallization temperature.

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  • 0086279936

    0086279936 2017-11-15 11:12:20

    Cold forging is a manufacturing process where a bar stock is inserted into a die and squeezed with a second closed die. The deformation starts at room temperature and changes the shape and size of the initial part until it has assumed the shape of the die. At this final step, the part can reach a temperature of up to 250°C, since the friction strain rates are very high during deformation. The process requires high-resistance dies and high-duty steel, usually reinforced by retaining rings. Even if these dies are quite expansive compared to hot forging dies, their life time is much higher, leading to a competitive cost per unit. However, this can only be achieved with a suited design and efficient forging process, thanks to excellent engineering skills.

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