On the issue of unclear sizing area of wire drawing dies

The sizing zone is the final step in determining the final size of the wire, and the short and uneven size of the sizing zone will directly affect the final quality of the wire. Short and small sizing belts can easily cause product dimensions to exceed the tolerance and quickly wear out and scrap the drawing die. A clear and straight sizing zone can produce high-precision and high-quality wire, which is beneficial for reducing wear and greatly improving the service life of the drawing die.
From the comparison of wear curves between the wire drawing dies produced in Germany and those produced in Xianggang, China, it can be seen that the two types of wire drawing dies work under the same drawing conditions: workpiece material: 65 steel wire; Pulling speed: 3.64m/s; Lubricant for drawing: soap powder; Surface coating before drawing: sulfuric acid pickling, phosphating, borax coating. The test results indicate that the structure of the wire drawing die has a significant impact on its use. The service life of wire drawing dies produced in Germany is 2.72 times longer than that of wire drawing dies produced in Xianggang. The above comparative analysis proves that optimizing the hole pattern of the drawing die can reduce the wear rate of the drawing die and extend its service life. Therefore, optimizing the hole shape of the wire drawing die and improving its manufacturing accuracy can save production costs and significantly improve production efficiency, which is of great significance for the development of China's wire rod industry.