A method for removing iron scale on the surface of hot-rolled high-nickel steel plate
A surface oxidation and steel plate technology, applied in the field of metallurgy, can solve problems affecting the surface quality of steel plates, increase production costs, and affect production processes, etc., and achieve significant economic benefits, improve supercooling, and optimize surface quality.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0022] The present embodiment high-nickel steel plate is 09Mn, and the removal method of its surface oxide scale comprises heating and rolling process, and concrete process step is as follows:
[0023] (1) Heating process: the billet is heated in the heating furnace, the heating temperature is controlled at 1200°C, the heating time of the billet is controlled at 7.5h, and the temperature of the billet out of the furnace is controlled at 1170°C;
[0024] (2) Rolling process: Two-stage controlled rolling process is adopted. Stage I is the initial rolling stage. High temperature and large reduction are adopted for closed water rolling. The volume closed water rolling is 55mm, the reduction rate is controlled at 15%, and 90% of the oxide scale on the surface is removed;
[0025] Reserve target thickness + 50mm reduction for natural cooling and air-drying of the steel, stage II rolling, start rolling temperature 850°C, stage II rolling temperature controlled at 760°C, first use lar...
Embodiment 2
[0028] The present embodiment high-nickel steel plate is 07Mn, and the removal method of its surface oxide scale comprises heating and rolling process, and concrete process step is as follows:
[0029] (1) Heating process: the billet is heated in a heating furnace, the heating temperature is controlled at 1180°C, the heating time of the billet is controlled at 7h, and the temperature of the billet out of the furnace is controlled at 1160°C;
[0030] (2) Rolling process: Two-stage controlled rolling process is adopted. Stage I is the initial rolling stage. High temperature and large reduction are adopted for closed water rolling. The volume closed water rolling is 60mm, the reduction rate is controlled at 20%, and 98% of the oxide scale on the surface is removed;
[0031] Set aside the target thickness + 55mm reduction for natural cooling and air-drying of the steel, rolling in the second stage, the rolling temperature is 875°C, and the rolling temperature in the second stage i...
Embodiment 3
[0034] The present embodiment high-nickel steel plate is 13MnNbMoNiR, and the removal method of its surface oxide scale comprises heating and rolling process, and concrete process step is as follows:
[0035] (1) Heating process: the billet is heated in a heating furnace, the heating temperature is controlled at 1200 °C, the heating time of the billet is controlled at 8 hours, and the temperature of the billet out of the furnace is controlled at 1180 °C;
[0036] (2) Rolling process: Two-stage controlled rolling process is adopted. Stage I is the initial rolling stage. High temperature and large reduction are adopted for closed water rolling. The volume closed water rolling is 65mm, the reduction rate is controlled at 23%, and 97.8% of the oxide scale on the surface is removed;
[0037] Reserving the target thickness + 52mm reduction for natural cooling and air-drying of the steel, rolling in the second stage, the rolling start temperature is 860°C, and the rolling temperature...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More