Shanghai Daoqin Plastics Co., Ltd.

  injection molding processing surface quality and requirements

    ① Raw Materials must process requirements separation drying, can has water 份, injection molding rear surface has 银纹

    ② injection molding temperature degree, pressure, time and other combined process parameters requirements, injection speed degree 应严格 control, fast injection speed degree 会导致 plating and 基体 附 force 差(electroplating parts injection speed degree control in 15%-35% between)

    ③ injection molding process in, can use demolding agent, especially is has silicon type demolding agent, 否则会 effect/influence plating force;

    ④ in machine rear material, raw materials in screw in due to time long degradation formed injection molding product property;

    ⑤ injection molding parts surface 不 抛 light and abrasion, effect/influence plating and 基体 附 force;

    ⑥操 as in injection molding process in, must belt/tape dry 净 手 sleeve/set, injection molding rear product surface by 污染;

    ⑦ internal stress control: product 不允许存 in relatively large internal stress, injection molding rear 应进行 internal stress testing (use acid method)【 will parts 浸泡于 concentrated acid in 1-2 separation 钟, use water 冲洗, rear surface has 无变白】

    ⑧ dimensions control: long degree, assembly or assembly combined and tool amount requirements

    surface quality requirements

    surface 应平整 light slip, color uniform, material, material, deformation, cracking, color delamination, surface 无麻点, shrink 瘪, flow 痕, 银纹, 油斑, scratch 划伤, weld lines small 于极限样 parts. 【检验拿 parts must belt/tape dry 净棉质手 sleeve/set 】

    appearance quality requirements

    appearance quality and 封样一致,端头部位避免 has 尖角, flash, material 屑;边缘平整,无缺口, 卷口; assembly deformation, material, fracture,; assembly flash, and other defect. 【修边拿 parts must belt/tape dry 净棉质手 sleeve/set, 避免弄脏 parts surface