Q: What processing techniques are suitable for SPCC?
A: Stamping, bending, stretching, welding, cutting; for deep drawing, SPCD/SPCE is recommended to avoid SPCC cracking.
Q: Precautions for bending SPCC?
A: Inner radius angle ≥ 1.5 times the plate thickness; bend along the non-rolling direction; preheat thick plates to prevent cracking, and apply paint after bending for rust prevention.
Q: Common problems and solutions for SPCC welding?
A: Problems: Excessive spatter, porosity, decreased corrosion resistance; Solutions: Use low-silicon welding wire, control voltage/gas flow; clean and apply zinc-rich paint after welding.
Q: How to solve slip lines in SPCC stamping?
A: Select annealed + leveled (-S) material; optimize die fillet radius and lubrication; control stamping speed to avoid severe deformation.
Q: Typical application areas of SPCC?
A: Automotive interior parts/panels, appliance housings, electronic components, steel furniture, hardware accessories, building ventilation ducts.