What is round iron? Dongguan steel wholesale small series tell you: cold drawing round iron: "cold drawing", refers to the drawing process under normal temperature, also refers to the method of applying drawing force on one end of the material to make the material through a mold hole, and the hole diameter of the mold is smaller than the diameter of the material. Cold drawn round iron refers to the round iron processed by the above methods.
In the material market, people generally equate cold drawn round steel with cold drawn round iron, in fact, they have totally different processing methods. In general, people also according to the conventional saying that cold drawn round steel refers to cold drawn round iron. Cold drawing refers to the application of tensile force on both ends of metal materials to stretch metal materials, so that metal materials produce certain plastic deformation to improve the yield point strength of metal materials and extend the length of materials.
Cold drawing process makes materials have extrusion deformation in addition to tensile deformation, while cold drawing process materials only have tensile deformation, so the properties of materials processed by cold drawing process are better than those processed by cold drawing process. Cold drawing is generally carried out on a special cold drawing machine, while cold drawing is much simpler.