22B-E019F104
22B-E019F104
简单的说,就是直接在塑胶模具上(一般在母模模仁)直接做成拉丝效果,通过生产注塑,成型出来的塑胶制品表面就会出现类似拉丝效果,其大致工艺 流程如下:
用青铜做芯模材料加工出模胚,在芯模胚上用钻石刀车出拉丝效果,常见的有长丝、短丝、太阳纹等,此时芯模胚与生产塑胶产品用的模仁形状相反;
将芯铜模胚放入电铸液中进行沉镀,电镀液一 般为镍的溶液。选择镍作为电铸液主要考虑镍的金属特性(镍,近似银白色、硬而有延展性并具有铁磁性的金属元素,它能够高度磨光和抗腐蚀),利于生产注塑过程中模仁的抗腐蚀和模具保养;
一般此沉镀的时间较长,需要十几到二十几天,电镀层厚度需满足模具设计要求,一般能达到10-12mm。
将铜芯模取出,取出铜芯模的复制品(即电镀层),此复制品即是日后用于生产的模仁,当然根据模具设计还需要进行加工抛光;
将加工好的镍模仁放置到加工好的模具钢材质模胚中;
进行注塑生产,此时射出成型出来的产品表面就会出现类似金属的那种拉丝效果。
注塑成型后的制品的表面有如下几种表面处理:
直接是塑胶材质的颜色,深颜色塑胶件更容易表现有类似金属拉丝质感的效果,视觉效果比浅色的更像金属拉丝效果;
制品进行喷涂金属漆,使其塑胶的颜色和拉丝,在视觉上更加接近金属拉丝质感,但与真正的金属拉丝还是有的区别,比如手感偏轻、传热速度不够等;
对制品进行真空蒸镀(镀镍或镀铬)。由于电镀层本身就是金属,因此视觉上非常接近金属拉丝质感更强,几乎可以与真的金属拉丝效果的质感媲美, 至少质感上偏亮了些。
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