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Wire drawing machine basics

Wire drawing machine is designed to reduce the cross-section of a wire to a desired size through pulling the wire through a single or a couple of dies. According to different working temperatures, drawing is classified into two catalogs: cold drawing at room temperature and hot drawing at elevated temperatures. There are many applications for wire drawing, including electrical wiring, cables, spokes for wheels and stringed musical instruments.

Process of wire drawing

The wire is usually shrunk through pointing machine to fit through the die; then the wire is pulled through the die. As the volume of the wire remains the same, the diameter of the wire is getting smaller, the length will be longer. Broadly speaking, the wire needs a series of draw, through smaller and smaller dies, to reach the particular size.


Lubrication is an important part of drawing process, for its close relationship with good finish surface and long die life. Given different lubrication conditions, there are two types of wire drawing: wet and dry. Straight wire drawing machine is a dry drawing, for its wire or rod go through a lubricant container, while wet wire drawing machine refers to the wire or rod are completely immersed in lubricant.

Drawing dies

Drawing dies are usually made of tool steel, tungsten carbide or diamond, all of which have surfaces of high hardness. Due to different sizes of wires, different dies are employed. A diamond die is used for drawing very fine wire. For hot drawing, cast-steel dies are used, while for steel wire drawing, a tungsten carbide die is used.

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