There are different levels of air oxidation when the wire drawing surface is pulled out by the wire drawing machine. This problem is likely to be caused by the following reasons:
1. The temperature of the cooling circulating water in the airtight chamber is too high, exceeding 40°C, so the airtight chamber cannot achieve the specified cooling effect on the wire drawing, resulting in the wire drawing still having a high temperature after quenching, and encountering air at high temperatures The CO2 in the air oxidizes.
2. Insufficient soapstock composition of the freezing liquid in the airtight chamber will increase the friction between the wire drawing and each guide wheel, so that the wire drawing temperature will rise again, resulting in the oxidation of the air on the wire drawing surface.
3. The pressure and water flow of the cooling circulating water in the airtight chamber are insufficient, so that the wire drawing cannot achieve a satisfactory cooling effect.
Solution: Always check whether the machinery and equipment for refrigerating and cooling circulating water is running normally, and whether the actual cooling effect is all normal; adding chemicals that can increase the concentration of soap stock in the airtight chamber at certain intervals, so that it can be changed. The composition of the soapstock in the cooling circulating water ensures that the wire drawing can run normally on the guide wheel; whether the pressure of the cooling circulating water is regularly maintained is normal, and the pressure in the sealing chamber is continuously changed according to the pressure change during manufacturing. Cooling water pressure and water flow.
