利用机械加工的方法制造铸造生产用的金属模具,存在着周期长、成本高、加工困难等问题。为了改变这种状况,促进汽车生产的发展,1978年我们把常温快速固化树脂砂应用在模具的铸造上,实现了无切削和少切削加工,收到了良好效果。两年多来,我们除精铸了一批汽车生产用的铝质整体双面型板、模型及铁质热芯盒外,还为兄弟厂制做了一批金属模具。精铸与机加 There is a problem of long cycle length, high cost, difficult processing and the like for manufacturing a metal mold for casting production by a machining method. In order to change this situation and promote the development of automobile production, in 1978 we used the room temperature fast curing resin sand mold casting, achieved no cutting and less cutting, and received good results. Over the past two years, apart from casting a number of aluminum double-sided aluminum plates and models for the production of automobiles, as well as iron hot-core boxes, we have also produced a number of metal molds for our brother factory. Casting and machining