After having a wire drawing die, we are concerned about how to operate the specification, and how to maintain the wear resistance of the wire drawing die, today to buy a wire drawing die or to buy a wire drawing die, share how the wire drawing die should maintain wear resistance.

The low parts inside the tungsten carbide drawing die will gradually wear out and be damaged after a period of use, resulting in a decrease in the working performance and accuracy of the mold. Due to the negligence of the operator and improper maintenance use, the tungsten steel wire drawing die will be damaged or the product quality will be reduced, or even stop production. How to eliminate and avoid these failures, which requires many cemented carbide mold assemblers to master the relevant mold repair technology, so that they can deal with and repair the faults at any time, so that they can return to normal use as much as possible, and give full play to the potential of the mold.

The influence of different material core materials on the life of the drawing die was introduced.

1. Cemented carbide

The tungsten carbide for wire drawing dies is tungsten carbide with low cobalt content. It has good wear resistance, impact resistance, polishing and corrosion resistance. It's easy to repair and cheap. It is a common material for drawing deep die cores, and is widely used in the drawing of coarse and medium steel wires. The results show that the performance of the material can be improved and the service life can be extended by improving the composition and microstructure of cemented carbide, controlling the fluctuation value of carbon content, and refining carbide particles. Currently, hot isostatic pressing, ultrafine grain treatment, and rare earth elements are used to reduce porosity, refine grains, increase hardness, and reduce the coefficient of friction, and chemical vapor deposition (CVD) and physical vapor deposition (PVD) are used to form diamond thin films or titanium. Silicon nitride coating improves the surface strength of composite gold on the surface of cemented carbide.

2. Natural diamond

Natural diamonds, commonly known as diamonds, have high wear resistance and thermal conductivity. When used for tungsten molybdenum wire drawing, it can improve the surface quality of the wire, improve the performance and dimensional accuracy of the wire. It is mainly used for drawing fine wires and finished lines, but its properties are very brittle, the impact resistance is poor, the hardness is anisotropic, and the drawing die is easy to wear unevenly. In addition, diamond is scarce, expensive and difficult to process, so it is limited in terms of drawing and coarse wire.

3. Synthetic diamond

Synthetic diamond, also known as polycrystalline diamond, is polycrystalline diamond formed by the non-directional polymerization of many single-crystal particles. It has the characteristics of high strength, high hardness, strong impact resistance, uniform performance and good comprehensive performance. When drawing the medium filament, its service life is longer than that of diamond dies and cemented carbide dies, and the wire size is stable and the surface quality is good. However, synthetic polycrystalline diamond has coarse grains and is difficult to polish. The surface finish of drawn wire is not as good as that of natural diamond. By refining the grains, the polishing performance can be improved, and the natural diamond can be replaced with medium and fine wire drawing dies, thereby greatly reducing costs and improving product quality.