1. What is cold forming?
Cold forming is a processing method that punches, shears, bends, stretches, etc. materials without heating.
2.What is the relationship between cold forming, cold drawing, cold rolling, cold heading ?
Cold forming includes cold drawing, cold rolling, cold heading, .
3.What is cold rolling?
Cold rolling: hot rolled steel coil is used as raw material, and after pickling to remove the oxide scale, cold continuous rolling is carried out. The finished product is hard rolled coil.
Due to the cold work hardening caused by continuous cold deformation, the strength and hardness of the hard rolled coil increase, and the toughness and plasticity index decrease, so the stamping performance will deteriorate, and it can only be used for parts with simple deformation.
4.What is cold drawing?
Cold drawing: It is a processing technology of materials. For metal materials, cold drawing refers to drawing the material at room temperature in order to achieve a certain shape and certain mechanical properties. Compared with hot forming, cold drawn products have the advantages of high dimensional accuracy and good surface finish. It is to anneal the steel plate to reduce its hardness and improve its plasticity, and then use a cold machine at room temperature for processing.
5.What is cold heading?
Cold heading and cold extrusion are basically deformation processes under the same conditions, but they are different in operation methods. Cold heading is a forging deformation of smaller workpieces and is often used in the fastener industry. Cold extrusion, on the other hand, is an extrusion deformation of larger workpieces and is widely used.
