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隨著我國工業(yè)化的發(fā)展，鋼材防腐問題在整個(gè)國民經(jīng)濟(jì)中具有重要的經(jīng)濟(jì)意義。特別是薄鋼板生產(chǎn)工序復(fù)雜，加工工藝難度大，生產(chǎn)成本高，價(jià)值

高。同時(shí)，又多用于高科技領(lǐng)域及汽車、家電等行業(yè)，它和廣大人民的生活息息相關(guān)。由于鋼板較薄，最容易遭受大氣腐蝕而報(bào)廢。長期以來，人

們創(chuàng)造了許多防止鋼材腐蝕的有效措施， 熱鍍鋅即是其中一種歷史最悠久的防腐方法。鍍鋅鋼板在我國有很大的市場(chǎng)，且其消耗量也很大，其中每

年都要進(jìn)口相當(dāng)數(shù)（重）量的各種鍍鋅鋼板。鍍鋅板由于涂鍍工藝中處理方式不同，表面狀態(tài)也不同，如普通鋅花、細(xì)鋅花、平整鋅花、無鋅花以

及磷化處理的表面等。切成定尺長度的鍍鋅板及鍍鋅卷板不得存在影響使用的缺陷（以下詳述），但卷板允許有焊接部位等若干不正常部分。鋅花

大小由液態(tài)鋅的成分來控制的同時(shí)，采用強(qiáng)制冷卻的方法來控制,小鋅花產(chǎn)品在鋅花開始擴(kuò)散之前,用小鋅花設(shè)備進(jìn)行急冷防止鋅液繼續(xù)擴(kuò)散,形成小

鋅花。

With the development of China's industrialization, the steel anticorrosion problem is of great economic significance in the whole national economy. Especially

the production process of thin steel plate is complex, the processing process is difficult, high production cost, high value. At the same time, it is mostly used in

high-tech fields and automobile, home appliances and other industries, which is closely related to the lives of the people. Because the steel plate is relatively

thin, it is the most vulnerable to atmospheric corrosion and scrap. For a long time, people have created many effective measures to prevent the corrosion of

steel, and hot-dip galvanizing is one of the oldest anti-corrosion methods. Galvanized steel plate has a large market in our country, and its consumption is also

very large, which will import a considerable amount of (weight) amount of various galvanized steel plate every year. Galvanized plate due to the different

treatment methods in the coating process, the surface state is also different, such as ordinary zinc flower, fine zinc flower, flat zinc flower, no zinc flower and phosphating treatment surface. The galvanized plate and galvanized coil plate cut into fixed length shall not have defects affecting the use (detailed below),

but the coil shall have several abnormal parts such as welding parts. The size of zinc flower is controlled by the composition of liquid zinc, and the forced

cooling method is adopted. Before the product of zinc flower begins to spread, the small zinc flower equipment is used to prevent the zinc liquid to continue

to spread and form a small zinc flower.