When the belt molten cold coil steel is worn, the fan is not open, and the fan is closed when the tail is closed.
After the furnace is installed, the pre-purging time is insufficient, and the emulsion is carbonized to form spots when heated.
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Al(%) | Ti(%) |
| Max 0.01 | Max 0.03 | Max 0.03 | 0.02 | 0.02 | — | Max 0.20 |
When the steel is continuously injected, the skin is turned; At the time of injection, the mold flux is improperly added, causing the molten steel to splash;
| tructural Grades | C | Mn | P | S | Cu | Ni | Cr | Mo | V | Cb | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30,33,36,40 | 0.25 | 0.9 | 0.035 | 0.04 | 0.2 | 0.2 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 |
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