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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. More carbide drawing die information in wococarbide. 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.

Arc type drawing die: It is divided into 5 parts of population by work. The angle and height of lubrication zone, working zone, sizing zone, exit zone/lubricated zone/work zone are difficult to control, and the angle is too large or too small. It will cause rapid wear of the die hole, the mold angle at the mold population is larger, and the positive compressive stress on the die wall is increased, so that it is easier to form a deeper annular groove than the linear wire drawing die, which affects the die life.