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在做模具设计过程中应注意哪些问题? What should be paid attention to in the process of mold design? (1)壁厚应尽量均匀一致，脱模斜度要足够大。 (1) the thickness of the wall should be as uniform as possible, and the slope of the stripping should be large enough. (2)过渡部分应逐步，圆滑过渡、防止有尖角。 (2) the transition part should be gradual, smooth transition and prevent the sharp angle. (3)浇口。流道尽可能宽大，粗短，且应根据收缩冷凝过程设置浇口位置，必要时应加冷料井。 (3) gate. The flow path is as wide and short as possible, and the gate position should be set according to the shrinkage and condensation process, and the cold material well should be added when necessary. (4)模具表面应光洁，粗糙度低(最好低0.8)。 (4) the surface of the mold should be bright and clean, and the roughness is low (0.8). (5)排气孔，槽必须足够，以及时排出空气和熔体中的气体。 (5) the vent holes must be sufficient to discharge the air and the gas in the melt in time. (6)除PET外，壁厚不要太薄，一般不得小于1mm。 (6) in addition to PET, the thickness of the wall should not be too thin, and generally it should not be less than 1mm. 4、塑胶件常出现的瘕疵? Imperfect often appear in 4, plastic? 缺胶→披风→气泡→缩水→熔接痕→黑点→条纹→翘起→分层→脱皮 Lack of adhesives, cloaks, bubbles, shrinkage, weld marks, black spots, stripes, warping, stratification and desquamation 5、常用的塑胶模具钢材? 5. Commonly used plastic mould steel? 45# S50c 718 738 718H 45# S50c 718738 718H 738H P20 2316 8407 H13 738H P20 23168407 H13 NAK80 NAK55 S136 S136H SKD61 NAK80 NAK55 S136 S136H SKD61 6、高镜面抛光用哪种纲材? 6. What kind of materials are used for high mirror polishing? 常用高硬热处理钢材，例如：SKD61、8407、S136 Steel for high hardness heat treatment, such as SKD61, 8407, S136 7、模架有那些结构? 7. What are the structures of the mold frame? 面板→A板→B板→方铁→导柱→顶针板→顶针固定板→底板 Panel, A plate, B plate, square iron, guide column, top needle plate, fixed plate to top needle and bottom plate 8、分型面的基本形式有哪些? 8, what are the basic forms of the parting surface?