【摘要】：磷化處理在現(xiàn)代鋼鐵工業(yè)領(lǐng)域的應(yīng)用非常廣泛�，F(xiàn)有的傳統(tǒng)磷化工藝雖然比較成熟,但仍然存在消耗量大、環(huán)境污染嚴(yán)重等問(wèn)題。隨著環(huán)保低碳經(jīng)濟(jì)的發(fā)展,急需開(kāi)發(fā)一種低消耗、低污染、高效率的磷化處理技術(shù)。鑒于此,本文針對(duì)傳統(tǒng)磷化處理工藝進(jìn)行改進(jìn),開(kāi)發(fā)了一種電解磷化處理工藝,研究了磷化液的成分、電解磷化參數(shù)等對(duì)電解磷化膜的形貌、相結(jié)構(gòu)及耐腐蝕性能的影響,考察了最優(yōu)的電解磷化工藝在鋼絲拉拔生產(chǎn)現(xiàn)場(chǎng)的應(yīng)用情況。論文以高碳鋼為研究對(duì)象,通過(guò)正交試驗(yàn)對(duì)其電解磷化工藝參數(shù)進(jìn)行了優(yōu)化。通過(guò)對(duì)磷化膜的性能進(jìn)行綜合評(píng)定,得到了最優(yōu)的電解磷化處理工藝參數(shù)：電解時(shí)間為60 s,磷化液的總酸值為110 pt,電解電流為0.4 A,電解磷化液溫度為25℃。此外,開(kāi)發(fā)了一種新型環(huán)保高效的磷化液,其最優(yōu)配方為：磷酸147 g/L,氧化鋅75.5 g/L,硝酸鈣320g/L,檸檬酸14 g/L,酒石酸2 g/L,硝酸鈉1 g/L,氟硅酸1 g/L,硝酸鎳為2g/L。對(duì)在最優(yōu)工藝條件下制備的磷化膜進(jìn)行測(cè)試,發(fā)現(xiàn)電解磷化膜的外觀、厚度以及耐蝕性能均能達(dá)到要求。利用SEM、XRD對(duì)磷化膜進(jìn)行微觀形貌及物相分析,發(fā)現(xiàn)磷化膜中磷酸鹽晶體呈顆粒狀致密分布,磷化膜對(duì)基體的覆蓋率高,且其主要由Zn3(PO4)2·4H2O相組成。為了驗(yàn)證實(shí)驗(yàn)得出的電解磷化處理技術(shù)的可行性,作者將研究的磷化液及其工藝技術(shù)在某企業(yè)鋼絲拉拔生產(chǎn)線現(xiàn)場(chǎng)進(jìn)行了試用。首先依據(jù)實(shí)驗(yàn)結(jié)論對(duì)鋼絲進(jìn)行電解磷化處理,對(duì)現(xiàn)場(chǎng)流程中的一些參數(shù)進(jìn)行檢測(cè)記錄,并與該生產(chǎn)線原來(lái)使用的磷化技術(shù)進(jìn)行對(duì)比,著重分析了兩種磷化處理工藝流程、磷化液消耗量、能源消耗、成本、磷化膜外觀和厚度等方面內(nèi)容。結(jié)果發(fā)現(xiàn),該電解磷化處理技術(shù)具有無(wú)酸洗、磷化液消耗量低、無(wú)需加熱以及效率高等優(yōu)勢(shì),在節(jié)省了大量成本的同時(shí)減少了污染物排放。此外,得到的磷化膜外觀致密均勻,厚度與耐蝕性均符合要求。總之,論文開(kāi)發(fā)的電解磷化處理技術(shù)在鋼絲拉拔以及涂裝預(yù)處理等領(lǐng)域都有著光明的應(yīng)用前景。
[Abstract]:Phosphating is widely used in the field of modern iron and steel industry. Although the existing traditional phosphating process is mature, there are still some problems such as high consumption and serious environmental pollution. With the development of environmental protection and low carbon economy, it is urgent to develop a phosphating technology with low consumption, low pollution and high efficiency. In view of this, an electrolytic phosphating process was developed to improve the traditional phosphating process. The effects of the composition of phosphating solution and the parameters of electrolytic phosphating on the morphology, phase structure and corrosion resistance of the electrophosphating film were studied. The application of the optimal electrolytic phosphating process in the steel wire drawing production site was investigated. In this paper, the process parameters of electrolytic phosphating of high carbon steel were optimized by orthogonal test. Through the comprehensive evaluation of the properties of the phosphating film, the optimum technological parameters of electrolysis phosphating were obtained: the electrolysis time was 60 s, the total acid value of the phosphating liquid was 110 pt, the electrolytic current was 0.4 A, and the temperature of the electrolytic phosphating solution was 25 鈩，

本文編號(hào)：2158695