How to solve the problem of SPCC sheet cracking during stamping?
A: First, optimize the raw materials by selecting billets with compliant manganese content; second, adjust the processing technology, optimize the die corner radius, apply appropriate blank holder force, and increase lubrication; third, replace with a similar grade with better tensile properties, such as SPCD.
How is the weldability of SPCC sheet?
A: Good weldability. Its low carbon content makes it less prone to cracks and other defects during welding, suitable for various conventional welding processes.
What precautions should be taken after welding SPCC sheets?
A: Surface treatment, such as painting or galvanizing, should be performed promptly after welding to prevent the welded area from rusting more easily due to structural changes or surface damage. Welding deformation should also be corrected.
What to do if SPCC sheet has excessive springback during bending?
A: Optimize the bending die by increasing the die corner radius; adjust the bending pressure and angle to allow for springback compensation; annealing the sheet beforehand can reduce hardness and decrease springback.
What causes surface inclusions in SPCC sheet production? A: Inclusions are mostly composed of elements such as Ca, Si, and Al, and mainly originate from the entrainment of protective slag and the dissolution loss of invasive nozzles. In high-speed ASP production lines, the high flow velocity on the surface of the crystallizer will exacerbate this problem.