Shanghai Daoqin Plastics Co., Ltd.

         according to molding methods, can will plastics separation is thermoplastic property and hot solid property plastics. hot solid property plastics 如胶木 powder and other, is in add hot, add pressure lower pressure made molding. 胶木模 cycle property pressure, in 150-200 degree lower 持续受 hot, thermoplastic property plastics polyvinyl chloride (PVC) and other, usually using/adopting injection molding, plastics is in mono add hot add hot, rear soft 化状态 injection to relatively cold type in, add pressure, from make cold hard molding.

         plastics mold manufacturing cost high, material use mold cost small separation, therefore use 钢材时, excellent use process property can good, property can stability and use lifespan relatively long types, specific for plastics mold 提出如 lower requirements:

        1.  machine processing properties excellent 良: plastics mold type 腔 几何形状 non complex, but also requirements processing deep 孔, deep and other difficult processing 部位, 钢材必 must tool has easy property can, in selection 钢材时, if other conditions can meet/satisfy, is this conditions is most rear 选定时 based on.

        2. 抛 light property can excellent 良: 无论何 types plastics mold, its type 腔 允许 surface coarse degree small, 几乎都 requirements can to gloss, need to gloss, 钢材必 must tool has good hardness, 首先钢材 in material need amount less, but also can has bubbles in, and micro uniform, in a large amount of production in use mold, surface coarse degree is important conditions.

        3. 良 good surface processing property: very more mold requirements molding parts surface is various other material 质 花纹, leather, 绸纹, 布纹, fine and other, this requirements 钢材 质 fine uniform, 否则腐蚀 rear 效果不佳.

        4.  wear resistance and tough property good: plastics mold is long 期承受 hot negative 荷, but also also is long 期经受摩 scratch, 如仅考虑 resistant scratch 一面, 而不考虑期受 hot negative 荷 一面, use cold mold high carbon high alloy manufacturing 时, 必然会出现 tough property 不足而引起 cracking.

        5. 淬火 property can good, deformation small: plastics mold type separation large separation must hot 处理, this requirements tool has relatively good property and very small deformation, generally thermoplastic property plastics molding use mold, using/adopting 调质, hard and other 处理即 can, hot solid property plastics molding use mold must hard.