Shanghai Daoqin Plastics Co., Ltd.

         electroplating PC/ABS made parts its metal appearance 效果, in automotive, home appliances and IT industry by use. material formulation design and electroplating process usually is 人们认 is effect/influence PC/ABS electroplating property can main/primary factors, however very less has 人关注 injection molding processing process for electroplating property can effect/influence.

         injection molding temperature degree

         in ensure material 不会裂 understanding lower, relatively high injection molding temperature degree can to more good electroplating property can.

         in relatively low injection molding temperature degree lower, PC/ABS材 material flow property 差, injection molding product has relatively large internal stress, in coarse process in force 释放, product surface non-uniform, 进而导致 electroplating product appearance defect, and electroplating combined force 差 状况 generate.

        而 relatively high injection molding temperature degree, can reduce product injection molding internal stress, from improve/increase material electroplating property can. related research table/sheet 明, versus relatively injection molding temperature degree is 230℃ product, temperature degree improve/increase to 260℃-270℃时, plating combined force improve/increase 约50%, meanwhile surface appearance defect rate large large reduce.

         however, injection molding temperature degree can high, if ultra- 材 material understanding temperature degree, will 会导致 injection molding product surface appearance defect, effect/influence its electroplating property can.

         injection molding speed degree and pressure

         relatively low injection molding pressure and injection molding speed degree has improve/increase PC/ABS electroplating property can.

         injection molding pressure large, will product internal separation separation pressure, generate relatively high product internal stress, 进而导致 product coarse 化不均 and electroplating combined force relatively 差;

        适当 improve/increase injection molding speed degree, can make gate 位置 剪切 add large, 导致流体 temperature degree improve/increase, 进而会 improve/increase 整 材 material flow property, has product 充填, reduce product internal stress;但剪切太 large 会导致材 material understanding, generate gas 痕, peeling, flash/burrs and other issues.

         holding pressure pressure and holding pressure 切换点

         high holding pressure pressure and relatively holding pressure 切换位置, easy product degree filling and gate 位置 应 force in and product internal relatively high 残留应 force. therefore need combined product 充填状态 setting holding pressure pressure and holding pressure 切换点.

         mold temperature degree

         high mold temperature has improve/increase material electroplating property can.

         in low mold temperature lower, material flow property 差, product in process in due to separation between pressure and tensile, product in cooling lower rear material separation orientation heavy, product molding internal stress relatively large, electroplating property can 差;反之 in high mold temperature lower, material flow property good, has 利于充填, separation 子链处于自然卷曲状态, product internal stress small, electroplating property can to very large improves.

        实际 mold temperature degree setting need combined mold water 路, add hot methods and molding cycle requirements setting, in effect/influence its it property can front lower, mold temperature degree amount improve/increase; control mold temperature degree meanwhile, need mold temperature degree uniform distribution, non-uniform mold temperature degree distribution, 会导致不均一 shrinkage internal stress effect/influence electroplating property can.

         screw speed

         relatively low screw speed has improve/increase material electroplating property can.

         screw speed setting is control plastics amount time, plastics material tube/pipe screw mixed 练, 输送至 nozzle time.

         screw speed meanwhile effect/influence uniform property, fast screw speed make screw inner material add heavy, melt temperature degree rise high, but also screw speed fast, plastics mixed 练效果愈差, formed temperature degree add large, make flow and cooling formed 差异, this is product internal stress formed main/primary causes 之一.

         therefore generally 说, in ensure material melt front lower, screw speed setting in make amount time short cooling time can.

         summary:

         injection molding process in injection molding temperature degree, injection molding speed degree and pressure, mold temperature degree, holding pressure, screw speed and other for PC/ABS electroplating property can generate effect/influence.

        而 most defect effect/influence is high product internal stress, internal stress large effect/influence to electroplating coarse stage/phase uniform property, effect/influence to most product electroplating combined force.

        总之, need combined product structure, mold and molding machine 台 状态, through setting combined injection molding process, method reduce material internal stress, can obvious improve/increase PC/ABS材 material electroplating property can.