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热镀锌钢道路护栏与冷镀锌的对比

  热镀锌钢道路护栏与冷镀锌的对比

  镀锌工艺在护栏网行业应用广泛,这种工艺也分为热镀锌和冷镀锌两种方式,那这两种镀锌工艺又有什么不同呢?我们来看一下热镀锌与冷镀锌的区别:

  热镀锌是在加热融化的锌液内浸镀,镀锌管是在电镀槽内通过电流单项性使新逐渐堵上金属外表。热镀锌工艺生产速度快,镀锌层厚,消耗锌金属多。普通镀锌速度慢,镀锌层薄。

  冷镀锌是指电镀,热镀锌是物件在熔融的锌中镀的锌。二者的区别是,前者耐腐蚀性差,后者的耐腐性好。热镀锌可以在室外环境下保持十几年,一般构件不大的钢结构都用这个工艺。

  知道了热镀锌和冷镀锌的区别,那我们来看一下具体什么是热镀锌和冷镀锌。

  什么是热镀锌?

  热镀锌又称为热浸镀锌,它是在高温下把锌锭融化,在放入一些辅助的材料,然后把金属结构件浸入镀锌槽中,使金属构件上附着一层镀锌层,热镀锌的优点在于它的防腐蚀能力强,镀锌层的附着能力和硬度较高。缺点是价格比较高,需要投入大量的设备和场地,钢结构件过大不易放入镀锌槽中,另外钢结构件比较单薄,热度的话极易变形。大家常说的富锌涂料一般指的是含有锌粉的仿腐涂料。

  什么是冷镀锌?

  冷镀锌其实就是电镀锌。冷镀锌工艺用于保护金属防止腐蚀,为此利用了锌填料的涂料,在利用任何一种涂敷的方法将其涂在被保护的物体表面,干燥之后形成锌填料图层,在干燥涂层中具有含量达到90%的锌。适合于修理工作(即在修理工作过程中,仅在被保护的钢表面损伤的地方,只要修理好表面就可以重新涂敷)。冷镀锌工艺用于各种护栏网制品和构筑物的防腐,这种工艺方式镀锌量很少,只有10-50g/㎡,其本身的耐腐蚀性比热浸镀锌相差很多。所以采用电镀锌的价格相对便宜一些。

  Comparison of hot dip galvanized steel rail fence and cold galvanized steel

  Zinc plating process in the fence industry wide application, this process is also divided into two types of hot dip galvanized and galvanized, and that the two kinds of galvanized process and what is the difference? We look at the difference between hot dip galvanized and galvanized steel:

  Hot dip galvanizing is dipped in heating melted liquid zinc, galvanized pipe is to gradually blocked the metal surface through the current single in electroplating slot. Hot dip galvanizing process is fast, zinc coating thickness, zinc metal consumption. Ordinary galvanized speed is slow, the zinc coating is thin.

  Cold galvanizing refers to the electroplating, hot dip galvanizing is the object in the molten zinc plated zinc. The difference between the two is that the former corrosion resistance is poor, and the latter has good corrosion resistance. Hot dip galvanized steel can be maintained in an outdoor environment for more than 10 years, the general structure of the steel are not used in this process.

  Know the difference between hot dip galvanized and galvanized steel, then let's look at what is hot and cold.

  What is hot dip galvanized?

  Also known as hot galvanized hot-dip galvanizing, it is at a high temperature to melt into the ingot, in some auxiliary materials, and then put the pieces of metal structures immersed in zinc bath, which is attached to a layer of galvanized layer of metal components, the advantages of hot dip galvanizing is its strong corrosion resistance, coating attachment ability and high hardness. Disadvantage is that the price is relatively high, the need to put a lot of equipment and venues, steel structure is too large to put into the galvanized trough, the other steel structure is relatively thin, the words of the heat easily deformed. We often say that the zinc rich coating generally refers to the imitation of anti-corrosion coatings containing zinc dust.

  What is cold galvanizing?

  In fact, the cold galvanizing. Cold galvanizing process for protecting metal against corrosion, so using zinc filler coating, in the use of any kind of coating method to surface coating on the protected, drying after the formation of zinc filler layer, has reached 90% of the content of zinc in dry coatings. It is suitable for repair work (i.e., in the process of repair work, only to be protected from damage to the surface of the steel, as long as the repair of the surface can be re coated). Cold galvanizing process for a variety of fence products and anti-corrosion structures, the process for zinc content rarely, only 10-50g/ square meters, the corrosion resistance of hot-dip galvanizing is a lot of heat. Therefore, the use of galvanized steel prices are relatively cheap.

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常州海纳道路护栏厂 版权信息