2022-3-19 14:26| 發(fā)布者: steelfu4mo| 查看: 1356| 評論: 0 |原作者: 佛山萬慶物資
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作為卷材連續(xù)生產(chǎn)的工藝辦法,鍍鋅板能夠分為電鍍鋅和熱鍍鋅兩種辦法,其間電鍍鋅辦法是用電堆積的辦法使金屆衷畫鍍上-"層zn金屬或zn合金。熱鍍鋅也叫做熱浸鍍,是將被維護金屬制品浸漬在熔融的zn金屬中,使其外表構成一層維護性金屬覆蓋層。與電鍍法比較,金屬熱鍍層較厚;在相同環(huán)境下,其壽數(shù)較長。使用鍍鋅鋼板為基板的彩色涂層鋼板,除有鋅保護外,鋅層上的有機涂層起了覆蓋隔離作用,可防止鋼板生銹,使用壽命比鍍鋅鋼板更長,據(jù)了解涂層鋼板的使用壽命比鍍鋅鋼板長50%。但是,在不同的地區(qū)和不同的使用部位,采用相同鍍鋅量、同種涂料、相同涂層厚度的彩色涂層板,其使用壽命會有很大的不同。例如,在工業(yè)區(qū)或沿海地區(qū),由于受到空氣中二氧化硫氣體或鹽分的作用,腐蝕速度加快,使用壽命受到影響。在雨季,涂層長期受雨水浸濕、或者在日夜溫差太大易結露的部位,都會較快地受到腐蝕,使用壽命會低。
As the process method of continuous production of coil, galvanized plate can be divided into two methods of galvanizing and hot galvanizing, during which galvanizing method is the method of electricity accumulation to make the gold session of the painting plating- " layer zn metal or zn alloy.Hot dip galvanizing, also known as hot dip plating, is the dip of maintenance metal products in molten zn metal to form a maintenance metal cover layer.Compared with plating, metal hot plating is thicker; longer in the same environment.The use of galvanized steel plate as the substrate color coated steel plate, in addition to zinc protection, the organic coating on the zinc layer plays a cover isolation effect, can prevent steel plate rust, service life is longer than galvanized steel plate, it is understood that the service life of coated steel plate is 50% longer than galvanized steel plate.However, in different areas and different use parts, the use of the same galvanizing amount, the same coating, the same coating thickness of the color coating plate, its service life will be very different.For example, in industrial areas or coastal areas, the corrosion rate is accelerated due to the action of sulfur dioxide gas or salt in the air.In the rainy season, the coating is wet by rain for a long time, or in the temperature difference between day and night is too large to dew, will be corroded quickly, the service life will be low.