论文部分内容阅读
铸造铝合金因其具有良好的导热性,很高的强度以及具有一定的耐蚀性,并且加工成本较低,因此在发泡模具中广泛运用,但由于高温下工作过程中其强度、硬度、耐磨性等力学性能都会降低,在高的注射压力作用下,模具型腔容易产生热变形,甚至开裂,模具变形开裂后如果直接报废,经济成本高,因此采用焊接方法将其修复,从而节约了模具成本,具有很好的经济价值,铝合金焊接修复技术在模具制造中被广泛推广,但铝合金焊接性差,尤其是铸造铝合金模具由于模具生产厂家不同,有些厂家的铝合金杂质含量高,导致铝合金焊接修复更为困难。甘肃钢铁职业技术学院引进松下全数字脉冲MIG/MAG焊机350GE2,选用合适的焊接材料,经过不断试验研究制定了铝合金焊接修复工艺,为铸造厂成功修复多起铝合金发泡模具。
Cast aluminum alloy because of its good thermal conductivity, high strength and has a certain corrosion resistance, and lower processing costs, and therefore widely used in foam mold, but due to the high temperature during the work of its strength, hardness, Wear resistance and other mechanical properties will be reduced under the high injection pressure, the mold cavity prone to thermal deformation, or even cracking, mold deformation and cracking if scrapped directly, the high cost of the economy, so the use of welding methods to repair, thus saving The cost of the mold, with good economic value, aluminum welding repair technology is widely used in the manufacture of molds, but the poor weldability of aluminum alloys, in particular, die-casting aluminum mold manufacturers due to different manufacturers, some manufacturers of aluminum impurities high , Resulting in aluminum alloy welding repair more difficult. Gansu Iron and Steel Polytechnic Institute introduced MIG / MAG MIG / MAG welder 350GE2 Panasonic, selection of suitable welding materials, through continuous experimental study developed aluminum welding repair process, foundry for the successful repair of more aluminum foam mold.