本文關(guān)鍵詞： 高硅鋁合金 電鍍前處理 環(huán)保 清潔生產(chǎn)　出處：《材料保護(hù)》2017年04期 　論文類型：期刊論文

【摘要】：針對(duì)當(dāng)前高硅鋁合金電鍍前處理中存在高化學(xué)需氧量(COD)、磷酸根、硝酸、氫氟酸、氰化物和重金屬等污染的問題,開發(fā)了一套高硅鋁合金電鍍環(huán)保前處理工藝,該套工藝COD低,無磷酸根、硝酸及氫氟酸,不含氰化物和重金屬,使用過程中無NOx氣體和HF氣體釋放。采用相關(guān)標(biāo)準(zhǔn)測試了除油劑的洗凈力和腐蝕性能;采用貼試紙法和銼刀試驗(yàn)考察了沉鋅層的孔隙率和后續(xù)鍍層的結(jié)合力。結(jié)果顯示:該工藝獲得的沉鋅層孔隙率低至0.1個(gè)/cm2,結(jié)晶細(xì)致,后續(xù)的鍍層結(jié)合力良好;該工藝完全能替代傳統(tǒng)的高硅鋁合金電鍍前處理工藝,且符合當(dāng)前推行的清潔生產(chǎn)和環(huán)保法規(guī)要求。
[Abstract]:Aiming at the problems of high chemical oxygen demand (COD), phosphate, nitric acid, hydrofluoric acid, cyanide and heavy metal in the pretreatment of high silicon aluminum alloy electroplating, a set of environmental protection pretreatment process for high silicon aluminum alloy electroplating is developed. The COD of this process is low. No phosphate, nitric acid and hydrofluoric acid, no cyanide and heavy metals, no NOx gas and HF gas release during use. The porosity of zinc deposition layer and the adhesion of subsequent coating were investigated by means of paper sticking test and file test. The results show that the porosity of zinc deposition layer obtained by this process is as low as 0.1 / cm ~ (2), the crystallization is fine, and the adhesion of the subsequent coating is good. This process can completely replace the traditional pretreatment process of high silicon aluminum alloy electroplating and meet the requirements of cleaner production and environmental protection regulations.
【作者單位】： 武漢材料保護(hù)研究所;廣東達(dá)志環(huán)保科技股份有限公司;
【分類號(hào)】：TQ153

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本文編號(hào)：1521269