细化剂加入量对6063铝型材组织条纹的影响

Effect of grain refiner amount on structure stripes of 6063 aluminum profiles

摘要:

型材组织条纹是由于合金内部微观组织发生变化而产生的纹路，经表面氧化处理后不可消除，造成产品大量报废．通过调整Al-Ti-B细化剂加入量，研究了细化剂加入量对铝型材组织条纹的影响．经多次挤压生产验证，观察型材表面情况，结果表明：控制铸造过程晶粒细化剂加入量为0.67kg/t时，可有效防止组织条纹的产生．

Abstract:

The structure stripes of the aluminum profiles are the lines produced by the changes in microstructure of the alloy, which cannot be eliminated after the surface anodized oxidation treatment, resulting in a large number of product scraps. By adjusting the addition amount of Al-Ti-B refiner, the effect of the addition amount of the refiner on the structure stripe of aluminum profiles was studied. After repeated extrusion production verification, surface condition of the profile was observed by the testing equipments. The results show that the addition of 0.67kg/t grain refiner in the casting process can effectively prevent the formation of structure stripes.