Remove the solution to the honed tube pitting:
1. When changing the roll, first check the roll, do not use the severely rusted roll, and replace the worn roll or hole type in time.
2. Improve the material of the roll and keep the groove cooling well. The process lubricant is used to enhance the anti-wear performance of the groove.
3. Control the heating operation of the billet to maintain a positive pressure in the furnace and reduce the oxidizing gas. For some alloy steels that are easily oxidized and the iron oxide scale is not easy to fall off, the surface of the steel billet should be covered with iron to protect the heating.
4. Remove the surface oxide scale with high pressure water, compressed air or iron brush before the roughing mill.