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图1所示的零件,形状和尺寸相同,只是材料和厚度不同。因批量小,故设设制造了一种钢皮锌基合金落料模(见图2)。该模具制造方法与一般锌基合金模基本相同,只是有一些改进。一、凹模漏料孔的加工为加工出漏料孔,在离凸模下端面约10～15毫米的上方围绕凸模包一圈软金属片(如铝皮、铜皮等)。这样未包处可加工出锌基合金凹模刃口,已包处可加工出凹模的漏料孔。为了防止合金在浇注时流进金属片与凸模之间的缝隙,可将接缝处用很细的铅丝拧紧,再用耐火泥或黄泥(调成浆糊状)涂
The parts shown in Figure 1 have the same shape and dimensions except for the material and the thickness. Due to the small batch, it is designed to create a steel zinc-based alloy blanking die (see Figure 2). The mold manufacturing method and the general zinc-based alloy die is basically the same, with some improvements. First, the concave hole leakage hole processing for the processing of the leakage hole, the punch from the lower end of about 10 to 15 mm above the punch wrapped around a circle of soft metal (such as aluminum, copper, etc.). This package can not be processed into a zinc-based alloy die edge, the package has been machined out of the mold leakage hole. In order to prevent the alloy from pouring into the gap between the metal sheet and the punch, the seam can be tightened with a fine wire, and then use refractory mud or yellow mud (transferred to the paste-like) coated