冷鍍鋅電纜橋架如何做到防腐?
冷鍍鋅電纜橋架是是利用電解設備將電纜橋架經(jīng)過(guò)除油、酸洗、后放入成分為鋅鹽的溶液中,并連接電解設備的負極,在電纜橋架的對面放置鋅版,連接在電解設備的正極接通電源,利用電流從正極向負極的定向移動(dòng)就會(huì )在電纜橋架上沉積一層鋅,冷鍍電纜橋架是先加工后鍍鋅,起到防腐的功效。
Cold galvanized cable tray is to use electrolytic equipment to degrease and pickle the cable tray, and then put it into a solution with zinc salt composition, and connect the negative pole of the electrolytic equipment. A zinc plate is placed on the opposite side of the cable tray, and the positive pole of the electrolytic equipment is connected to the power supply. A layer of zinc will be deposited on the cable tray by using the directional movement of the current from the positive pole to the negative pole. Cold galvanized cable tray is processed first and then galvanized, which has the effect of anti-corrosion.
同重防腐涂料一樣,冷鍍鋅電纜橋架的生產(chǎn)和涂裝工程也涉及到環(huán)境保護以及施工人員及公眾的職業(yè)衛生和,因此環(huán)境保護也是冷鍍鋅電纜橋架主要的發(fā)展方向。冷鍍鋅電纜橋架具有優(yōu)異的性能,主要體現在以下4個(gè)方面:
Like heavy anti-corrosion coating, the production and coating of cold galvanized cable tray also involves environmental protection and occupational health and safety of construction personnel and the public, so environmental protection is also the main development direction of cold galvanized cable tray. Cold galvanized cable tray has excellent environmental protection performance, which is mainly reflected in the following four aspects:
(1)成分內不含Ph、cr、Hg等重金屬;
(1) The ingredients do not contain Ph, cr, Hg and other heavy metals;
(2)歸屬于厚膜型材料,觸變性能好,經(jīng)充分攪拌后,少加或不加稀釋劑,即可涂裝施工。由于冷鍍鋅固體分含量高達77%,一次無(wú)氣噴涂可獲得較高的膜厚,減少了有機溶劑的揮發(fā)量,降低干燥能耗,這些均有利于環(huán)境保護。
(2) It belongs to thick film material with good thixotropy. After full mixing, with little or no thinner, it can be coated. As the solid content of cold galvanizing is as high as 77%, one airless spraying can obtain a higher film thickness, reduce the volatilization of organic solvents, and reduce drying energy consumption, which are conducive to environmental protection.
(3)經(jīng)過(guò)測試證明:絕大多數冷鍍鋅的溶劑和稀釋劑內不含甲苯、酮類(lèi)、鹵代烴等毒性大的有機溶劑。
(3) The test shows that most of the solvents and diluents for cold galvanizing do not contain toxic organic solvents such as toluene, ketones and halohydrocarbons.
(4)與熱浸鍍鋅相比,電鍍鋅工藝更簡(jiǎn)單,成本更低。冷鍍鋅電纜橋架是替代熱浸鍍鋅、電弧(熱)噴鋅的很好材料,對減少三廢、降低能耗,提高環(huán)境保護的社會(huì )效益的作用明顯。
(4) Compared with hot-dip galvanizing, the electro galvanizing process is simpler and cheaper. Cold galvanized cable tray is a good material to replace hot dip galvanizing and arc (hot) zinc spraying. It plays an obvious role in reducing three wastes, reducing energy consumption and improving social benefits of environmental protection.
在各種保護鋼基體的涂鍍方法中,熱鍍鋅是優(yōu)良的一種。它是在鋅呈液體的狀態(tài)下,經(jīng)過(guò)了相當復雜的物理、化學(xué)作用之后,在鋼鐵上不僅鍍上較厚的純鋅層,而且還生成一種鋅—鐵合金層。這種鍍法,不僅具備了電鍍鋅的耐腐蝕特點(diǎn),而且由于具有鋅鐵合金層。還具有電鍍鋅所無(wú)法相比擬的強防腐蝕性。因此這種鍍法適用于各種強酸、堿霧氣等強腐蝕環(huán)境中。
Hot dip galvanizing is an excellent coating method for protecting steel substrate. It is in the liquid state of zinc, after quite complex physical and chemical actions, not only a thick pure zinc layer is plated on steel, but also a zinc iron alloy layer is formed. This plating method not only has the corrosion resistance characteristics of galvanization, but also has a zinc iron alloy layer. It also has strong corrosion resistance that can not be compared with that of electrogalvanizing. Therefore, this plating method is applicable to various strong acid, alkali fog and other corrosive environments.
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