一、前言铝及铝合金具有比重小,导热、导电性能高,耐蚀性好,色泽美观,无低温脆性,塑性好,易于加工成型。近几的来,它在交通运输、化工、机械、电力、仪表、建筑、农业及轻工工业部门得到广泛的应用。尤其,在人民生活中开始大量使用,但铝及铝合金金属制品(如金属网)生产在我国尚属开发应用的阶段。 First, the preface Aluminum and aluminum alloy with a small proportion of thermal conductivity, high conductivity, corrosion resistance, beautiful color, no low temperature brittleness, good plasticity, easy processing. In recent years, it has been widely used in the transportation, chemical, mechanical, electric power, instrumentation, construction, agriculture and light industry sectors. In particular, the mass production of aluminum and aluminum alloy metal products (such as metal mesh) is beginning to be widely used in people’s lives. However, it is still a stage of development and application in China.