Shanghai Daoqin Plastics Co., Ltd.

injection molding machine 塑化组 parts, this 里指: screw, 熔胶筒, 胶头, 胶圈, gasket.
in injection molding machine as 时, 塑化组 parts good machine 动车 车轮, need 一开动, need to pressure, impact, scratch, pressure. for/regarding same 轮胎, in 平整 路面 upper 行驶, technology 娴熟 驾驶员操 as, can long use lifespan. 而经常 in 凹凸不平, relatively more upper 行驶, add upper property 紧急刹车动 as, 轮胎面 花纹 very fast by abrasion 平, waste.
therefore, need ensure injection molding machine 经常处于完 good 状态, must use injection molding machine property can, understanding use plastics material property can and quality 情况, add strong/high injection molding machine use tube/pipe as, to reduce fault/failure rate, decrease/reduce repair use, long use lifespan 目.
generally 说, effect/influence injection molding machine system use lifespan has below/following several 方面:
第一, machine abrasion loss function: modified plastics add material 质, glass fiber, metal powder and other, this material in, in and injection processing process in, will day month for screw, small parts and 熔胶筒进行 uniform property machine abrasion loss. can abrasion nitrogen 化层, 镀铬层. abrasion loss rear make screw and 熔胶筒 间隙 increase large, reduce 塑化效果, increase large 射胶漏流, make injection molding efficiency reduce, reduce processing degree. therefore, is can can decrease small abrasion loss, long 塑化组 parts use lifespan, processing in 应适当 improve/increase temperature degree, decrease small screw speed. selection or using/adopting di metal solution/scheme, can more has anti abrasion loss function.
        第二, machine fatigue and ultra- negative as 业: machine 人员习惯 property setting low temperature as, property setting high speed degree high pressure as, make 塑化组 parts property can poor 化. processing PC, PA plastics 时, in temperature degree to requirements 时, plastics degree very large, if this strong/high solvent as, must add large solvent pressure, add large solvent 胶扭矩, add large screw force fatigue. meanwhile, is this plastics melt degree very large, need 进行 injection molding processing 就必 must add large injection pressure and injection speed degree, increase small parts impact and negative 荷, accelerated its abrasion loss and force fracture.
第三, is factors （包括操 as or as and other ）: 1）, has metal mixed in plastics in 一起进入熔胶筒 in 时, due to pressure function, make screw 螺棱, 螺槽, 胶圈, gasket generate different degree abrasion loss, formed injection molding processing unstable, easy generate black spots and phenomenon; 2）, is add plastics, will high temperature plastics add to setting is low temperature 熔胶筒 in, formed solvent screw large, make screw generate force fatigue; 3）, cold 启动, is types 急噪心理 and negative responsibility as degree. in solvent temperature degree to setting requirements temperature degree or rigid rigid to 时, material tube/pipe in material, its outer absorption hot hot amount make temperature degree relatively high, 而里层 temperature degree also very low, therefore, cold 启动时 screw very large, make screw generate force fatigue, heavy very fast screw, 扭断 胶头 and 胶圈.
进入 solvent metal 杂质, large separation is 随破碎 material belt/tape 进. therefore, 应经常检查破碎 machine sheet/slice loss 情况, 发现刀 sheet/slice has abrasion loss 应立即 more 换. 另方面应经常检查清理落 material in magnetic iron. magnetic iron 周边吸附 metal saturated and 时, for/regarding outer iron 屑 吸附 force will decrease low, by 吸住, very easy by flow plastics 冲走, 一起进入 solvent in.
第四, positive assembly, debugging and more parts: this 方面也 very important, false assembly solvent 胶筒时装 不够紧, solvent or 射胶动 as 时就会出现 screw solvent phenomenon, formed screw or solvent abrasion loss. therefore, 应定期检查 equipment technology 状态, processing in parts 出现 异常 phenomenon.
第五, process 不当造 formed loss bad: 1）, long use high back pressure solvent 胶, add fast 塑化三 small parts abrasion loss. 该情况 generally in use color powder combined, due to color powder difficult dispersion, therefore using/adopting add large back pressure method. 2）, for/regarding degree high plastics, solvent using/adopting fast speed solvent 胶, make screw generate force fatigue; 3）, for/regarding high temperature plastics, especially is add glass fiber plastics, using/adopting high speed solvent methods.
第六, chemical function: by metal material is iron formed separation. Common property plastics has: flame retardant plastics, acid property plastics, PVC plastics and other. screw, 熔胶筒 and method by rear, surface generate 一 凹坑, surface coarse 糙, make injection molding machine as material flow retardant force large. 一 材 material easy in surface, formed separation understanding 炭化. 腐蚀严 heavy make screw and 熔胶筒间隙变 large, increase large, make injection molding efficiency reduce.
    is flame retardant plastics also is acid property 胶, plastics in high temperature lower processing 时都会 separation understanding acid property gas 体, plastics melt very easy 炭化并 viscous metal. therefore, 一方面塑化组 parts selection 不锈钢 or surface solution/scheme; 另方面 in production processing in amount use low back pressure, low temperature and low process, decrease/reduce plastics degradation; 第三方面, due to above plastics hot property, temperature degree high or hot time long easy formed plastics separation understanding degradation and 炭化, therefore production process in 应避免 and decrease/reduce is 无故停 machine. need machine, reduce temperature degree, good material 闸, will solvent in material rear, use PP material or PS material solvent rear can machine.