Analysis and discussion on the cause of steel leakageMolten steel temperature General Steel (take Q235 as an example) pouring temperature is 1520-1550℃2. Agin

Analysis and discussion on the cause of steel leakage

Molten steel temperature General Steel (take Q235 as an example) pouring temperature is 1520-1550℃

2. Aging of mold assembly, uneven water joints and partial blockage of water jacket, resulting in poor local cooling effect and steel leakage.

3. The lower mouth of the copper tube of the mold is worn larger (the inverted taper becomes smaller) or the mold taper design is unreasonable.

4, mold cooling water temperature is too high (not more than 30℃), water pressure is not enough (generally 6kg), flow is not enough, secondary cooling and three cold water is too small will cause steel leakage.

5, mold vibration frequency and amplitude, as far as possible to reduce the wear of copper tube and billet.

6, poor quality of molten steel, many impurities, resulting in steel billet slag and steel leakage.

7, protection slag can play a lubrication role, reduce friction.

8, foot roller, foot roller and mold copper tube arc and control 0.2mm clearance.