Drawing die in the long-term use process and die wall by metal wire strong friction and scouring effect, inevitably will produce wear phenomenon, the most common is in the work area wire into LJ appear annular groove (dent) wire drawing die ring groove, exacerbated by the wear of the die hole, because ring groove for loosening and spalling of the core material of small particles is metal wire into the die hole area and sizing area, plays a role of abrasive, and into the die hole of the wire is like grinding as aggravate the die hole wear. If not replaced in time to repair, then the ring will continue to accelerate the expansion of the expansion, so that the repair increased, and even more likely to appear in the ring groove crack, so that the drawing die completely broken scrap.
Learned from the experience, to develop a set of norms, to strengthen the daily maintenance, regular maintenance of the drawing die is a very cost-effective thing. Once the wire drawing dies any slight wear, and in time for polishing, the drawing die back to the original polishing state to spend a short time, and the pass of the wire drawing die no obvious change.
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