The tungsten carbide drawing die is one of the important tools to produce metal wire, and its quality will directly affect the output and quality of metal wire. There are many factors that affect the service life of the wire drawing die, such as the quality of the material of the wire drawing die itself, the geometry of the wire drawing die, the surface reduction rate of the metal wire, the lubrication effect of the lubricant, the quality of the wire drawing die and the cooling mode of the wire drawing die in the process of use. Due to the wide use of high-speed wire drawing machine, the research on the design of high-speed wire drawing die for high-speed wire drawing machine and extending the service life of the die has been carried out at home and abroad, such as the improvement of the die core material and the research on the pass theory and so on. High-speed wire drawing, because of the speed increase, can bring a series of problems, such as fever, wire drawing die wear such as intensifying make life of drawing die is reduced, the following will only from wire drawing die wire drawing die of calculating and analyzing the power and force of geometric parameters and the relationship between the wear and tear, determine the optimal geometric parameters of drawing die and to reduce wear and prolong the service life of drawing die.

Wire is machined by passing through small holes in a carbide drawing dieto reach a specified diameter. The process is called drawing. Although the principle of wire drawing is very simple, it is rather complicated from the mechanical point of view. Although many theories and speculations have been published to explain the mechanical principles involved in wire drawing, many aspects remain unexplained. Drawing dies are probably the simplest type of tool used in industry to deform metals. The most basic form of a drawing die is a metal block with a tapered hole. People have used this structure of the wire drawing die for more than 500 years, hard alloy wire drawing die is still based on the above basic form, but in some aspects made improvements. In 1923,Karl Schroter discovered that a mixture of tungsten carbide powder and drilling, iron or nickel (10% by weight) metals could be pressed and sintered to produce a material with low porosity, high hardness and high strength. He produced die cores that could be used to draw tungsten wires and successfully promoted them to the electric lamp industry. Soon this new material is widely used in the nonferrous metal wire industry. In the mid-1930s, the cemented carbide mould was also widely used in the us steel wire manufacturing industry. Modern cemented carbides are similar to the materials schroter produced in those days.

Posted by: hannahgwendolyn at 09:46 AM | No Comments | Add Comment
Post contains 481 words, total size 3 kb.