Solution of hot rolling A131 FH36 marine steel plate to prevent internal crack of A131 FH36 marine steel plate:
(1) When A131 FH36 marine steel plate superheat control requests are grouped, the inner shrinkage cavity can be reduced to form fine columnar crystals or the development degree can be reduced.
(2) According to the standard message for deceleration, it is used for standard operation of cutting end to ensure the quality of A131 FH36 marine steel plate inner end.
(3) To replace the mold foot roller and to test the arc, A131 FH36 marine steel plate timing roller mold has enough test for arc section in case of arc.
(4) A131 FH36 marine steel plate carefully check the condition of secondary cooling water and rollers, and stop pouring secondary water. If it does not meet the requirements, production is allowed.
(5) Casting A131 FH36 marine steel plate keeps up with the electromagnetic stirring. When the current fluctuation of electromagnetic stirring is greater than ±5a, the flow sequence number, start and end time should always be recorded, or the length of waste cutting according to the following 400A standard current is not applied in the electromagnetic mixer.
(6) It is found that before using the polarized light crystallizer, inform the maintenance personnel to measure the polarization amplitude to adjust.
(7) Casting at constant casting speed.
