Steel Wire Drawing Die

Steel wire Wire drawing die

Cemented carbide is made of refractory metal carbide (tungsten carbide, titanium carbide, tantalum carbide, etc.), with iron group metal cobalt or nickel as the bismuth metal. A metal material produced by a powder metallurgy process. It is used to make the core material of the wire drawing die. Its valuable characteristic is that it has high hardness, abrasion resistance, corrosion resistance, high temperature resistance, easy heat conduction and easy light application. Therefore, it has been used since it was applied to the wire drawing industry. A strong vitality and vitality. How to make the quality of the hard disk of the hard alloy fully exerted, so that the wire drawing can achieve high quality, high output and low consumption. In addition to its manufacturer, the product quality is wiped out, the mold making of the wire drawing industry is extremely important, otherwise, even the mold The billet is very good, and it is also a waste of the hard material of the hard sheet metal due to improper mold making. The material has not been used for its best. Because of this, the research work on the design of the drawing die hole has not stopped.

Strain aging of high carbon steel wire The strain aging mechanism of steel wire means that after a large amount of cold working deformation of the steel wire, the lattice dislocation motion is very severe, the internal sliding plane is twisted, the crystal lattice is seriously distorted, and the steel wire structure becomes Abnormally dense, internally generating multiple stress fields. After staying at a higher temperature for a certain period of time, the cementite in the pearlite will be separated, and the resulting carbon atoms move in the stress field, move toward the center of the dislocation, and precipitate as carbides. In the dislocation, when it is further deformed, slippage is difficult. The macroscopic performance is that the tensile strength of the steel wire increases, and the bending and torsion values decrease. It is proved that the drawing heat of the steel wire is the root cause of the strain aging of the steel wire, and the strain aging is a fatal effect on the mechanical properties of the steel wire. How to reduce the heat of drawing steel wire has become the primary problem in the wire technology. In order to prevent strain aging, people design the wire drawing machine. A variety of measures have been taken to reduce the heat of drawing the wire, for example, to ensure that the drawing drum has sufficient strength, and to minimize the wall thickness. The drum is made of narrow slits. In order to increase the heat dissipation effect of the steel wire on the drum, the steel wire is air-cooled and directly water-cooled; in the mold, the hollow mold sleeve is used to strengthen the cooling of the core. The development and application of these technologies have greatly promoted the advancement of wire drawing technology, and have played an obvious role in suppressing the strain aging of steel wires, and improved the drawing speed of high quality steel wires. However, it should be pointed out that from the mechanical design point of view, the wire speed of the wire drawing machine drum can be higher, but the wire strain aging problem can not be completely solved. Therefore, the drawing speed of the wire is still limited.