How to weld and repair Q460MC steel plate

After negotiation between the supplier and the buyer, the Q460MC steel plate can be welded and repaired and should meet the following requirements:

a) Use appropriate welding methods.

b) Before welding repairs, use appropriate methods such as leveling or grinding to completely remove harmful defects on the Q460MC steel plate. The depth of the removed part is within 20% of the nominal thickness of the Q460MC steel plate. The total grinding area of one side should be within 2% of the Q460MC steel plate area.

c) There should be no undercut or overlap on the edge of the welding part of the Q460MC steel plate, and the pile height should be higher than the rolling surface by more than 1.5mm, and then remove the pile height by leveling or grinding.

d) Heat treatment Q460MC steel plate should be heat treated again after welding repair.

After negotiation between the supplier and the buyer, the surface quality of the Q460MC steel plate can also meet the requirements of GB/T14977.