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Description of materials and processes suitable for cold forging

Description of materials and processes suitable for cold forging

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  • Time of issue:2021-09-02
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(Summary description)Cold forging is a process carried out at room temperature or slightly warmer and can be used for most materials, provided that the die is designed to be strong enough to withstand the stresses created by forging. Metals that can be forged are lead, tin, aluminum alloys, copper, titanium, molybdenum, vanadium, and steel. Examples of cold forged parts are collapsible tubes, aluminum cans, cylinders, gear blanks.

Description of materials and processes suitable for cold forging

(Summary description)Cold forging is a process carried out at room temperature or slightly warmer and can be used for most materials, provided that the die is designed to be strong enough to withstand the stresses created by forging. Metals that can be forged are lead, tin, aluminum alloys, copper, titanium, molybdenum, vanadium, and steel. Examples of cold forged parts are collapsible tubes, aluminum cans, cylinders, gear blanks.

  • Categories:Info-Center
  • Author:
  • Origin:
  • Time of issue:2021-09-02
  • Views:0
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Cold forging is a process carried out at room temperature or slightly warmer and can be used for most materials, provided that the die is designed to be strong enough to withstand the stresses created by forging. Metals that can be forged are lead, tin, aluminum alloys, copper, titanium, molybdenum, vanadium, and steel. Examples of cold forged parts are collapsible tubes, aluminum cans, cylinders, gear blanks.

Although the cold forging process is classified as steady state after the transient start-up phase, in practice this is inaccurate due to changes in contact conditions and process temperature changes. However, cold forging has many useful benefits, including the elimination of welded connections, flexibility in branch positioning, seamless metallurgical integrity and extended material life, among others.

Cold forging is a discontinuous process in which the second billet is not loaded until the first billet is extruded. During the start-up of extrusion, the extrusion load increases as material is forced to fill the container and out of the die. After the transient start-up phase, the process is generally considered to be in a steady state.

In fact, since the contact conditions are constantly changing and the temperature changes during the process, the process will not be in a steady state. If friction is negligible and temperature changes are small, steady state may be a good approximation. However, material flow is stable for most of the forging process, and there is a high resistance to radial flow towards the center as the billet is extruded into small discards and loads increase substantially. Forge then break.

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