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堿性鍍鋅工藝研究+文獻綜述

時間:2019-06-19 19:38來源:畢業論文
對堿性鍍鋅工藝的工藝評價,獲取具有較好覆蓋能力、分散能力及較好防護能力的鍍鋅工藝。為此,我們查找了典型堿性鍍鋅工藝配方,對不同堿性鍍鋅工藝進行鍍層實施及鍍層質量評

摘要:防護與裝飾性電鍍工藝在國內外獲得極其廣泛的應用,在鋼鐵基體上廣泛使用的防護性鍍層主要是鋅鍍層。鍍鋅工藝分為氰化物鍍鋅、酸性鍍鋅和堿性鍍鋅三類。由于氰化物鍍鋅的有毒性,其在市場上被限制使用。鍍鋅是所有電鍍中成本最低廉的,而且具有抗腐蝕性好、外表美觀和耐貯藏等優點,所以在輕工、儀表、電機、國防、建筑五金等工業中得到廣泛的應用。
堿性鍍鋅是主要鍍鋅工藝之一,而且因為其基礎槽液組成簡單,易于管理,不含氰化物,且金屬離子濃度低,有利于防止污染和公害。鍍層外觀光亮細致,鈍化膜色澤均勻,抗蝕性能優良,符合環保清潔生產的要求,因此獲得了普遍應用。堿性無氰鍍鋅工藝的核心技術是光亮添加劑,近十幾年來,國內外對此開展了大量研究。但堿性鍍鋅的鍍鋅層的耐蝕性與氰化物鍍鋅尚有差距。課題希望通過對堿性鍍鋅工藝的工藝評價,獲取具有較好覆蓋能力、分散能力及較好防護能力的鍍鋅工藝。為此,我們查找了典型堿性鍍鋅工藝配方,對不同堿性鍍鋅工藝進行鍍層實施及鍍層質量評價,并且對堿性鍍鋅工藝進行質量優化以期替代氰化物鍍鋅。36475
畢業論文關鍵詞:堿性鍍鋅;光亮劑;氧化鋅;氫氧化鈉;赫爾槽
 Technology research of alkaline zinc plating
Abstract:Protective and decorative plating technology get extremely widespread application at home and abroad ,the widely used protective coating on steel substrate is mainly zinc plating.Galvanized process is pided into three types,that is cyanide zinc plating, acidic galvanized and alkaline zinc plated.Due to the cyanide zinc plating is toxic , its use is limited in the market.Galvanizing is the most low cost of all the plating, and is characterized by good corrosion resistance, beautiful appearance and the advantages of resistance to storage, so it was widely used in the light industry, instrumentation, electrical, defense, building hardware and other industries.

源¥自%六:維;論-文'網=www.aftnzs.live


Alkaline zinc is one of the main zinc plating, and because its basic bath composition is simple, easy to govern, do not contain cyanide, and the concentration of metal ion is low, to prevent pollution and pollution.Coating appearance  look bright in detail, the color of passivation coating is uniform , excellent corrosion resistance, accord with the requirement of environmental protection cleaner production, thus gained widespread application.The core of the basic no cyanide zinc plating technology is the bright additive, in recent years, both at home and abroad to carry out a large amount of research.But the corrosion resistance of alkaline galvanized zinc coating is not good as  cyanide zinc plating .Project hope the evaluationin of alkaline zinc plating process , acquisition a zinc plating who has good covering power, dispersing ability and better protection .To this end, we find the typical alkaline zinc plating formula for different alkaline zinc plating coating and evaluat the coating quality , and optimize the alkaline zinc plating quality in order to replace cyanide zinc plating.
Keywords:    Alkaline zinc plating; Brightening agent; Nihil album; Caustic soda; Hull cell
 目錄
1 緒論    1
1.1電鍍的簡介    1
1.1.1 電鍍的結晶過程    2
1.2電鍍的發展及其現狀    3
1.3 電鍍鋅的原理及其應用    4
1.3.1 鋅的性質與用途    4
1.3.2 電鍍鋅的過程    5
1.3.3 電鍍鋅的應用    5
1.4 工業鍍鋅的種類及其特點    5
1.5 堿性鍍鋅工藝及其研究現狀    7
1.5.1 鍍液成分和規范的影響    7
1.6 本課題研究的內容及意義    11 堿性鍍鋅工藝研究+文獻綜述:http://www.aftnzs.live/huaxue/20190619/34951.html
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