Self-tapping screws require high-hardness surfaces for […]
Self-tapping screws require high-hardness surfaces for self-tapping and low-carbon steel to achieve cutting and extrusion. At the same time, there must be sufficient coordination of core strength and toughness to prevent distortion or twisting during work. The carburizing of such screws belongs to shallow carburizing.
Therefore, most of the domestic and foreign steel cables are used in the continuous production line of mesh belt furnace or shaker furnace. With the application of self-tapping screws more and more widely, some people may ask: the surface of the self-tapping screws has oxide layer and oil carbon scale, which is difficult to clean. Several cleaning agents have been used. It is not a bad effect or the cost is too high. Is there any good solution?
In fact, this is still difficult to remove, and needs to be analyzed for specific conditions. There are currently several ways to consider only:
1. Spray a Teflon coating;
2. Sawdust and quartz sand in the drum together with the agitation, will wear away those surface debris, wood chips to oil sand to protect the scale;
3. Spray micro powder treatment;
Finally, we mainly recommend alkaline cleaning solution heating plus ultrasonic vibration assistance, because this method can effectively clean the surface of self-tapping screws. In order to make it last longer, we must remember the trick of cleaning the surface of self-tapping screws.