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Straight wire drawing dies: it divided into 4 parts, The entrance area, work area, sizing area, exit area/un-lubrication area/lengthened work area, entrance area and work area are extended,, so that the wire enters the work area In the middle section, the wedge angle of the upper half of the working area and the upper half of the working area is used to establish a "wedge effect", and a denser and firm lubricating film is formed on the surface of the wire to improve the lubricating effect. However, there is no transition arc between the work area and the sizing area. During the drawing process, the wire and the wire forming surface are worn, and the test proves that the straight type is three to four times longer than the circular type.the sizing area. During the drawing process, the wire and the wire forming surface are worn, and the test proves that the straight type is three to four times longer than the circular type.

What is the effect of stretching temperature on wire drawing dies life? The temperature at which the tungsten molybdenum wire is stretched should be based on the pass compression ratio and the mold. The heat dissipation conditions, mold temperature and other factors are reasonably determined. Stretching temperature too high, the adsorption and viscosity of graphite emulsion are reduced, and even graphite appears. The phenomenon of burning of components makes the surface of the tungsten-molybdenum wire rough. The ground is exposed to the outside to increase the coefficient of friction between the wire and the mold. Stretch The temperature is too low, the deformation resistance of the metal is large, and the wire and the mold are increased. Rubbing force causes the mold to wear significantly.