带钢热浸驶主要包括热做锅、热镀铅、热银铝热微锌、热彼锌相合金等类现。随着工业发展和技术进步,各种镀层的发质不尽相同。例如:热优锅已被电镀锅所取代,热铍铅的使用饭城在不断缩小,热镀侣的市场不够广阔,热镀锌及热镀锌铝合金正处于兴旺发达时期。
同样是热镀,之所以会有不同的发展前景,完全由它们的用途和特性所决定。镀锡板主要用于室内,诸如罐头盒、茶叶盒之类的包装品,所以它不要求太厚的镀层。另外,镀锡层是作为电化学腐蚀的阴极,. 旦露铁之后, 则铁作为阳极而溶解, 镀锡层便完全失去了保护作用。所以,作为镀锡板往往是要求均匀无孔较薄的镀层,电镀锡的特点正好能满足这些要求,因此取代了热镀锡。
热镀锌板主要用于户外,其腐蚀环境比较恶劣,所以要求较厚的镀层。此外,当电化学腐蚀发生时镀锌层是阳极保护着铁阴极,所以镀层愈厚使用寿命愈长,热镀锌镀层的特点正好能满足这些要求。热锻锌板主要用于建筑业、家电制造业、动力车辆业、机械工业、容器制造业与包装业等。例如:修建房屋的屋面人房借类、边期门窗、即搭、水道、通风管道等家用电气内板、底板、边梁等用于农业的拖拉机、播种机、仓及各种容器等,都需要大量热镀锌板。的空调设备、洗衣机、 电冰锁电脑机箱等制造汽车的外亮、施肥机、粮做热镀铝钢板由于具有 良好的耐热、耐候、热热反射特性,所以广泛应用于石油化工、冶金机械、造车、造船、交通运输等领域。热镀铝板虽然有稳定的市场,但它主要是用于耐高温,耐酸性介质腐蚀的特殊场合,而且铝的价格也比锌高一此外热做的城具有稳定的市场但它主现是用于前运输等领交通运输等领层就完全失去了保护作用。由于以上原因,电化学腐蚀时铁是阳极,侣镀层是阴极,所以一旦热铁铝露钢,则镀铝板只适另外在发生用一定特殊场合,它的发展也不会对热镀锌板构成威胁
虽然新近研究的铝锌硅合金镀层钢板显示了定的发展前途,但是,这种产品生产成本较高,工艺控制难度也大,镀层合金层厚而脆使其深中性能不够理想,表面装市性也不如热镀锌板,所以用途较窄,目前主要用于建材领域,还不能完全取代热镀锌板的用途。
What kinds of hot dip plating for strip steel are there? Its application market?
Steel Standard-High Quality Steel Plate Processing and Distribution Service, Focusing on Galvanized Plate
Hot dip driving of strip steel mainly includes hot pot, hot lead plating, hot silver, aluminothermic micro-zinc, hot bi-zinc phase alloy and so on. With the development of industry and technology, the hair quality of various coatings is different. For example, hot-dip pot has been replaced by plating pot, the use of hot beryllium and lead is shrinking, the market of hot-dip couples is not broad enough, hot-dip galvanizing and hot-dip galvanized aluminium alloy are in a prosperous period.
Hot-dip plating also has different development prospects, which are entirely determined by their use and characteristics. Tin plate is mainly used for indoor packaging, such as canned boxes, tea boxes and so on, so it does not require too thick coating. In addition, tin plating is used as the cathode of electrochemical corrosion. After dew of iron, iron dissolves as an anode, and tin plating completely loses its protective effect. Therefore, as tinplate, it is often required to have a uniform, porous and thin coating. The characteristics of tin plating can meet these requirements, thus replacing hot-dip tin plating.
Hot-dip galvanized sheet is mainly used outdoors, its corrosion environment is relatively bad, so thicker coating is required. In addition, when electrochemical corrosion occurs, the galvanized layer is an anode to protect the iron cathode, so the thicker the coating, the longer the service life, the characteristics of hot-dip galvanized coating can meet these requirements. Hot-forged zinc sheet is mainly used in construction industry, household appliances manufacturing industry, power vehicle industry, machinery industry, container manufacturing and packaging industry. For example, a large number of hot-dip galvanized sheets are needed for the construction of household electrical interior panels such as roofing houses, side doors and windows, building, waterways, ventilation pipes, bottom panels, side beams, tractors, seeders, silos and various containers for agriculture. Air-conditioning equipment, washing machines, ice-lock computer chassis and other manufacturing automobiles, fertilizer applicators, grain hot-dip aluminized steel sheets are widely used in petrochemical, metallurgical machinery, car-building, shipbuilding, transportation and other fields because of their good heat resistance, weather resistance and heat reflection characteristics. Hot-dipped aluminium sheet has a stable market, but it is mainly used for special occasions of high temperature resistance and acid corrosion resistance, and the price of aluminium is higher than zinc. In addition, hot-dipped city has a stable market, but it is mainly used for transportation and other frontier industries, which completely loses its protective role. Because of the above reasons, iron is the anode in electrochemical corrosion and the couple coating is the cathode, so once hot iron, aluminium and exposed steel, the aluminized sheet is only suitable for other special occasions, and its development will not pose a threat to hot galvanized sheet.
Although the newly studied Al-Zn-Si alloy coated steel sheet shows certain development prospects, its production cost is relatively high and the process control is difficult. The thickness and brittleness of the coated alloy layer make its deep and medium properties unsatisfactory, and its surface marketability is not as good as that of hot-dip galvanized steel sheet. Therefore, its use is relatively narrow. At present, it is mainly used in the field of building materials and can not completely replace the use of hot-dip galvanized steel sheet.
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