2021-12-14 09:57| 發(fā)布者: steelfu4mo| 查看: 1375| 評(píng)論: 0 |原作者: 佛山萬(wàn)慶物資
目前，建筑用彩鋼板的鍍層一般有兩種：熱鍍鋅和鍍鋁鋅。鍍層厚度越大，耐腐蝕性能越好。鍍層厚度主要是影響到彩涂鋼板的切口腐蝕性能，切口腐蝕是電化學(xué)腐蝕，影響因素有預(yù)處理層、底漆、基板厚度、鍍層厚度等。在正常情況下，預(yù)處理層和底漆相對(duì)比較固定，影響切口腐蝕性能的就是基板厚度及鍍層厚度了。基板越薄、鍍層越厚，耐切口腐蝕的性能越好。
At present, there are two kinds of building color steel plate plating generally: hot galvanizing and aluminum galvanizing.The greater the coating thickness, the better the corrosion resistance.The thickness of the coating mainly affects the incision corrosive performance of the color-coated steel plate. Insect corrosion is electrochemical corrosion, and the influencing factors are pretreatment layer, primer, substrate thickness, coating thickness, etc.Under normal circumstances, the pretreatment layer and the primer are relatively fixed, and the thickness of the substrate and the coating thickness will affect the corrosive performance of the incision.The thinner the substrate and the thicker the coating, the better the incision corrosion resistance.
對(duì)于彩鋼板來(lái)說(shuō)，兩種基板的應(yīng)用領(lǐng)域區(qū)分不大，在相對(duì)酸性的環(huán)境下，鍍鋁鋅基板是比較好的選擇。而對(duì)于潮濕的、堿性環(huán)境下使用，鍍鋅基板的切口耐蝕性的優(yōu)勢(shì)得以體現(xiàn)。 而對(duì)于鍍層厚度來(lái)說(shuō)，對(duì)屋面板及外墻板的一般要求是熱鍍鋅≥180g/m2（約26μm），鍍鋁鋅≥100g/m2(約27μm)，在使用環(huán)境處于重工業(yè)區(qū)或海邊時(shí)，國(guó)外相關(guān)協(xié)會(huì)都有最低鍍鋅量的要求，如ECCA規(guī)范和澳大利亞標(biāo)準(zhǔn)要求鍍鋅層重量≥275g/m2（約38μm），鍍鋁鋅≥150g/m2(約40μm)。
For the color steel plate, the application field of the two substrate is not much different, in the relatively acidic environment, the aluminum-plated galvanized substrate is a better choice.For wet and alkaline environment, the advantages of incision corrosion resistance of galvanized substrate can be reflected.For coating thickness, the general requirements for house panels and exterior wall panels are thermal galvanized 180g / m2 (about 26 m), galvanized 100g / m2 (about 27 m), which is in heavy industrial areas or seaside, such as ECCA specifications and Australian standards zinc weight 275g / m2 (about 38 m), 150g / m2 (about 40 m).
合理的選材可以在滿足使用要求的同時(shí)最大限度的降低成本，不合理的選材則會(huì)導(dǎo)致成本增加或產(chǎn)品不合格，所以客戶應(yīng)高度重視合理選材的重要性，佛山市萬(wàn)慶物資有限公司提供售前技術(shù)服務(wù)，為客戶的選材提出專業(yè)性的意見(jiàn)和建議。
Reasonable material selection can meet the requirements of use at the same time to minimize the cost, unreasonable material selection will lead to cost increase or unqualified products, so customers should attach great importance to the importance of reasonable material selection, Foshan wanqing materials co., LTD. Provide professional pre-sales technical service, put forward professional opinions and suggestions.
