With the deepening of reform and opening up, wire drawing dies and corresponding die hole inspection instruments made by industrially developed countries have been introduced in China. Through the analysis of the hole pattern of foreign wire drawing dies, we can understand the design ideas of modern wire drawing dies and provide a reference for improving the design level of Chinese wire drawing dies.
According to the nature of work, the structure of the wire drawing die core can be divided into five sections: "entrance zone, lubrication zone, working zone, sizing zone, and exit zone". The inner diameter profile of the drawing die is very important, it determines the tension required to compress the wire and affects the residual stress in the wire after drawing.
The functions of each area of the mold core are: the entrance area, which facilitates threading and prevents the wire from scratching the drawing die from the entrance direction; the lubrication area, through which the steel wire is easy to bring lubricant; the working area is the main part of the die hole, and the deformation of the wire The process is carried out here, that is, the original cross-section is reduced to the required cross-sectional size.
