Wire drawing die sizing area

The sizing area is the control part of the mold aperture size, and the metal wire can get the final size through this area. Reasonable sizing zone length can improve straightness, dimensional accuracy, surface roughness quality and mold life.

The longer the sizing zone, the larger the contact area between the wire and the die hole, and the greater the frictional force. Therefore, the longer the sizing zone will increase the tensile force value. However, the tensile stress must be greater than the tensile strength limit of the wire. The stretching process can only be carried out, otherwise it will cause wire breakage and make stretching impossible. Therefore, it is very important to find a suitable sizing zone length for drawing different grades of metal wire.

The sizing area must be straight and reasonable in length. If the sizing area is too long, the friction force of the pull wire will increase. After the wire is pulled out of the die hole, it is easy to cause diameter reduction or wire breakage. If the sizing area is too short, it is difficult to obtain a wire with stable shape, accurate size and good surface quality. It will wear out very quickly.

In summary, as a wire rod manufacturer, it is necessary to obtain stable and long-term stretching, accurate dimensions, better surface quality, reduce costs, and create great economic benefits. It is essential for the inspection of the hole structure of the wire drawing die. .