Study On Performance Of High-speed Wire Drawing

Kinds of drawing wire-steel are widely used in each field of the national economy. Wire rod used as drawing raw material is one of the pivotal factors to improve drawing quality and lower product cost.During the process of drawing, high-speed wire steel with low carbon has such an inclination of poor absorption of lubricant, which affects drawing performance of wire. This paper will deal with the way to improve the drawing performance of wire when drawn. Usually, the absorption amount mainly depends on two aspects: the wire's surface structure and its absorption ability.This paper mainly deals with the control of high-speed wire's facial structure and adjustment of lubricant. The thesis also studies the controlled cooling techniques of high-speed wire steel with low carbon : When the high-speed wire steel with low carbon drawing wire's temperature is controlled at about 935℃, the wire's surface thickness of FeO is rather high in its surface oxide-layer and the absorption ability of lubricant is good and therefore the performance of drawing is good. If the high-speed drawing wire with low carbon is slowly cooled down, its absorption performance is good to improve the drawing ability; meanwhile the author studies the existing directions and finds that Adding oil addictive to the amount of about30% will do well in lubrication during drawing and makes the absorption ability of wire's surface more homogeneous. Meanwhile the proper amount of solid additive in lubricant will improve the absorption effect. The author thinks that 2% polyethylene solid addictive is an economical choice for it improves the ability of drawing without increasing the cost.According to the research of drawing function of high-speed wire steel, the author put forward opinions on the lubricant direction and the controlled cooling craft of high-speed wire, which influence the absorption of lubricant during drawing.