What are the key points for incoming inspection of SPCC coils?
Verify material certificate and specifications; visually inspect for rust and scratches; measure thickness with calipers (10% of each batch, ≥3 sheets, 3 measurements per sheet); check straightness.
What are the storage precautions for SPCC coils?
Store in a dry, well-ventilated warehouse, with wooden padding at the bottom to avoid open-air stacking; stacking height should not exceed 2 meters to prevent bending; cover with a rainproof cloth to prevent moisture contact.
What are the key points for cutting and processing SPCC coils?
Use laser cutting for thin plates (small heat-affected zone), and plasma cutting for thick plates; grind the cut surface promptly after cutting to remove burrs and perform rust prevention treatment.
What are the key points for bending SPCC coils?
Select appropriate bending machine dies and control the bending speed; avoid bending direction perpendicular to the rolling grain to prevent cracking; check angle consistency after bending.
What surface treatment process should be selected for SPCC coils? Indoor dry environment: spraying, phosphating; semi-outdoor environment: electro-galvanizing; outdoor high humidity environment: hot-dip galvanizing (HDG); decorative requirements: coating, fluorocarbon spraying.