22B-E019H204

22B-E019H204

注塑成型法的缺點或不足之處：

如果該塑膠表面需要噴涂，這拉絲相對要比較粗，否則容易被油漆覆蓋；另外還要控制噴涂的厚度，否則拉絲被覆蓋。

如果采用真空鍍，制品的成本會偏高；

模具制作過程成本相對比較高，周期比較長；

鎳的硬度低，模具生產(chǎn)的時候容易撞傷，所以事先要多準(zhǔn)備3-5塊的鎳模仁，以免影響到生產(chǎn)。

如果塑膠件需要真空鍍，設(shè)計上避免大面積、尖角等。一般是產(chǎn)品的局部裝飾件采用拉絲。

水鍍拉絲法

簡單來說是將塑膠產(chǎn)品進(jìn)行濕法電鍍（又稱水鍍），然后再對表面進(jìn)行拉絲。

塑料經(jīng)電鍍之后，其機械性能有了很大的改進(jìn)，例如抗拉應(yīng)力、扭應(yīng)力和沖擊應(yīng)力都增大許多，而且抗腐蝕能力也大大增強，同時又能增加塑料的散熱能力。

另外由于塑料電鍍的成本低，生產(chǎn)效率也高，故塑料電鍍在電子、汽車、家庭用品等被廣泛地應(yīng)用。

但隨著審美要求的提高，希望塑料電鍍后能做成類似金屬拉絲效果（如不銹鋼拉絲效果），故可對塑料電鍍后進(jìn)行拉絲。

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