Reflection of defect characteristics of orange peel on aluminum profile surface:
Sometimes the surface of aluminum extrusions after stretching orange peel shape wrinkles, in fact, this is the aluminum extrusions surface metal stress is greater than the matrix metal produced by the surface metal fragmentation (grain breakage), if continue to force, the stress will be from the outside to the inside until the matrix fracture.
Causes of orange peel defect on aluminum profile surface:
The reason for the defect of orange peel on the surface of general aluminum profile is that the amount of stretching is too large.Generally speaking, the thicker the wall, the shorter the profile length, in order to ensure the straightness of the profile, to prevent twisting, the more easy to appear when artificially increasing the amount of stretching.
Methods to eliminate the defect of orange peel on the surface of aluminum profile:
(a) : to the bending and twisting of the aluminum profile to strengthen the mold, control the aluminum straightness.
(ii) : increase the traction force when extruding hot aluminum materials, and take corrective measures such as top and pressure for hot profiles on the discharging table (pay attention to prevent profile deformation)
(iii) : control the tensile rate of aluminum profiles. In order to ensure both the straightness and surface quality, strictly control the bending degree within the upper limit required by customers.
(4) : control the tensile rate of aluminum profiles, in order to ensure the straightness and give consideration to the surface quality, profiles at both ends of the stretch and stop printing deformation part more cut off.
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