Hardness of cold drawn flat steel and the necessity of surface treatment.
Q: what is the hardness of No. 45 steel as cold drawn flat steel?
Answer: No. 45 steel as cold drawn flat steel, it is required that its hardness should be within the range of HRC15-220, and this is necessary to achieve.
Q: Is there a need for surface treatment of cold drawn flat steel before cold drawing?
Answer: it is necessary to treat the surface of cold drawn flat steel before cold drawing, because this operation can reduce the cold drawing resistance, as well as the wear degree of grinding tools.
Q: What is the size of cold drawn flat steel?
Answer: the size of cold-drawn flat steel, from the current technical level of domestic manufacturers, is able to reach the size of 10*120 this specification.
Q: Are the cold drawing steps the same for different steel grades of cold drawn flat steels?
Answer: cold drawing flat steel of different steel number, their cold drawing steps are different. For example, no. 45 steel cold drawing, annealing treatment, otherwise, can not be cold drawing operation, A3 steel can be directly cold drawing.
Q: the same specifications of cold drawn flat steel and hot drawn flat steel, which price is higher?
Answer: the same specifications of cold flat steel and hot flat steel, although they are flat steel, but in the price, is not the same, generally speaking, the price of cold flat steel is higher, because the process of cold flat steel, is more than hot flat steel.