Raw material: The wire rope wire drawing mentioned here refers to a process in which the raw material is pickled, phosphated, shelled, and billeted, during which it is pulled one or more times to change its molecular structure and make it reach the target diameter.
The raw materials are ferrous metals with a diameter of 0.14-10.00mm and non-ferrous metals with a diameter of 0.01-16.00mm.
Pickling: The process of washing off the rust and rolling on the surface of the raw material of the steel wire rope with acid solution. It is also called shelling in the production process of the steel wire rope.
Phosphating: In layman's terms, it is a process of immersing a material in a phosphate solution to obtain a water-insoluble phosphate film on its surface. Corrosion is prevented to a certain extent.
Blanking: A hole of a certain shape in the center of various drawing metal wire molds, round, square, octagonal or other special shapes. The size and shape change as the metal is forced through the die hole.
Cold drawing: ordinary round steel, let it be forcibly pulled through a hole with a smaller diameter than its diameter, then the diameter of the round steel will become smaller, and the length will be elongated. further smaller. After this plastic deformation occurs, the hardness of the steel will increase, and the plasticity will basically disappear. Such steels can be used where plasticity is not required, but only strength is required.
Tempering: Because the molecular structure of the steel wire has been destroyed, only tempering restores the internal structure of the steel wire. In order to facilitate drawing again, it is not easy to break, and it can be pulled to the strength we want. Strength is what we call tensile strength. The strength is drawn by wire drawing, not by heat treatment. This is the biggest difference between the wire rope process and the machining process. General strength: 1470N/mm2, 1570N/mm2, 1670N/mm2, 1770N/mm2, 1870N/mm2, 1960N/mm2. The higher the strength, the stronger the tensile force, but the worse the toughness. Therefore, the appropriate strength should be selected in the selection of wire ropes. Not just high intensity. High-strength steel wire ropes have strong tensile force, but are relatively weak in terms of wear resistance and flexibility.
