In the process of long-term use of the wire drawing die, the die wall is subject to strong friction and erosion of the metal wire, which will inevitably produce abrasion. The most common one is the ring groove (dent) of the wire drawing die at the LJ of the working area. The appearance of aggravated the wear of the die hole, because the small particles of the core material peeled off due to the loosening of the ring groove are brought into the working area and the sizing area of the die hole by the metal wire, acting as an abrasive, and the wire entering the die hole It will aggravate the wear of the die hole like a sharpening needle. If it is not replaced in time for repair, the ring groove will continue to expand at an accelerated rate, making repair more difficult, and there may even be cracks in the deeper part of the ring groove, causing the mold to be completely broken and scrapped.

　　 Knowing from experience, it is very economical to formulate a set of norms and standards, strengthen daily maintenance, and frequently overhaul the mold. Once the mold has any slight abrasion, polishing in time will take a short time to restore the mold to the original polished state, and there is no significant change in the hole size of the mold.