| 摘要 |
PROBLEM TO BE SOLVED: To prevent a surface defect of a product made of a billet to contrive the enhancement in a yield by eliminating a scale lump remaining in a deep groove part in carrying out scarfing of the billet. SOLUTION: When a fused steel well is formed at a scarfing start part 4, a nozzle 3 is moved backward by D in the C direction, and after then the billet 2 is moved by a table roller directing to the billet moving direction A to carry out the scarfing.
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