Aluminum profile extrusion products surface has rough of longitudinal or horizontal designated ditch, designated marks. from surface recessed to of designated injury more is due to mold stick has foreign body, or empty knife at processing rough produced of. also has a is in products of corner at appeared of raised designated marks, is due to extrusion mold crack by produced. horizontal designated injury or designated marks main is due to products from sliding introduced horizontal shipped to finished saw cut Taiwan Shi cooling Shang has hard real highlight will products designated injury, also plenty of in charging, handling in the produced of. Scratches, scratches are common surface defects of aluminum extrusion process,
Main method are:
1) Extrusion die jobs should be cut, smooth smooth, extrusion die air knife should be processed smoothly.
2) die set should be carefully checked to prevent hairline cracks in the mold being used. mold design should note the corner radius.
3) always check the cooling bed, finished products storage, preventing hard protrusions to scratch the product.
4) when loading products should be placed flexible insulation Strip, transporting, lifting should be smooth, carefully
