Reasons for aluminium profile die marks(welding lines) and the solution1, the die itself causes: the die structure is not reasonable, die clamping is itself a dislocation, die venting is not good2, aluminum billets after die, metal by cutting directly below the midline of the rib site there is an ob

First of all we should clear is the aluminum extrusion die would have been the basic of welding seam line, depending on the aluminum extrusion process, but in actual production, we can as much as possible to reduce or avoid the aluminum extrusion mold welding seam line, following a brief introductio