大家知道，工程中电缆桥架是电气安装常用的材质设施，以敷设线缆多、施工方便而优于管道，尤其在系统干线，集中布线的场合更加体现其优越性。桥架的形式有槽式、托盘式、梯架式等多种。桥架也有很多种材质和不同类型的工艺，比如材质分为：不锈钢、铝合金、玻璃钢等材质；工艺分为：热镀锌、静电喷塑、镀锌等工艺；另外按消防要求还有防火与耐火的桥架。每种材质和工艺的性能特点都是不同的，电缆桥架主要用途是用来支撑电缆、保护电缆以及管理电缆的，给我们的电缆线路管理带来了很大的方便。一、镀锌桥架与热镀锌桥架（热浸锌桥架）区别?

　　As we all know, cable trays are commonly used materials and facilities for electrical installation in engineering. They are superior to pipelines in terms of laying more cables and convenient construction, especially in the case of system trunk lines and centralized wiring, which further demonstrates their superiority. There are various forms of cable trays, such as trough type, tray type, ladder type, etc. There are also many types of materials and techniques for bridge frames, such as stainless steel, aluminum alloy, fiberglass, and other materials; The process is divided into: hot-dip galvanizing, electrostatic spraying, galvanizing and other processes; In addition, according to fire safety requirements, there are fire-resistant and fire-resistant cable trays. The performance characteristics of each material and process are different. Cable trays are mainly used to support cables, protect cables, and manage cables, which brings great convenience to our cable line management. 1、 What is the difference between galvanized cable tray and hot-dip galvanized cable tray (hot-dip galvanized cable tray)?

　　镀锌桥架：镀锌桥架又名电镀锌桥架；一般人理解为镀锌桥架以为是热镀锌桥架，其实是不对的，跟镀锌管一样，桥架的镀锌也分两种，即冷镀锌（电镀锌）和热镀锌（热浸镀锌）；?

　　Galvanized bridge: Galvanized bridge, also known as electroplated galvanized bridge; The general understanding of galvanized cable trays as hot-dip galvanized cable trays is incorrect. Like galvanized pipes, the galvanizing of cable trays can be divided into two types: cold galvanizing (electroplating) and hot-dip galvanizing (hot-dip galvanizing);?

　　钢铁在空气、水或土壤中很容易生锈，甚完全损坏。每年因腐蚀造成的钢铁损失约占整个钢铁产量的1/10，另一方面，为使钢铁制品与零件表面具有某种特殊功能，同时赋予其表面装饰性的外观，所以，一般采用电镀锌的方式对其处理。1、原理：

　　Steel is prone to rusting and even complete damage in air, water, or soil. The annual steel loss caused by corrosion accounts for about 1/10 of the entire steel production. On the other hand, in order to give steel products and parts a special function on the surface and give them a decorative appearance, electroplating is generally used for treatment. 1. Principle:

　　由于锌在干燥空气中不易变化，而在潮湿的空气中，表面能生成一种很致密的碱式碳酸锌薄膜，这种薄膜能有效保护内部不再受到腐蚀。并且当某种原因，使镀层发生破坏而露出不太大的钢基时，锌与钢基体形成微电池，使钢基体成为阴极而受到保护。2、性能特点：

　　Due to the fact that zinc is not easily changed in dry air, while in humid air, a very dense basic zinc carbonate film can be formed on the surface, which can effectively protect the interior from corrosion. And when for some reason, the coating is damaged and a relatively small steel substrate is exposed, zinc forms a microbattery with the steel substrate, making the steel substrate a cathode and protected. 2. Performance characteristics:

　　1）锌镀层较厚，结晶细致、均匀且无孔隙，抗腐蚀性良好；

　　1) The zinc coating is thick, with fine and uniform crystallization and no pores, and has good corrosion resistance;

　　2）电镀所得锌层较纯，在酸、碱等雾气中腐蚀较慢，能有效保护钢基体；

　　2) The zinc layer obtained by electroplating is relatively pure and corrodes slowly in acid, alkali and other mist, which can effectively protect the steel substrate;

　　3）锌镀层经铬酸钝化后形成白色、彩色、军绿色等，美观大方，具有一定的装饰性；

　　3) After chromic acid passivation, the zinc coating forms white, colored, military green, etc., which are aesthetically pleasing and have a certain degree of decorative value;

　　4）由于锌镀层具有良好的延展性，因此可进行冷冲、轧制、折弯等各种成型而不损坏镀层。3、应用范围：

　　4) Due to its excellent ductility, zinc coating can be formed through various processes such as cold stamping, rolling, bending, etc. without damaging the coating. 3. Application scope:

　　随着科学技术生产的发展，电镀工业所涉及的领域越来越广泛。目前，电镀锌的应用已遍及国民经济的各个生产和研究部门。例如，机器制造、电子、精密仪器、化工、轻工、交通运输、兵器、航天、原子能等等，在国民经济中有重大意义。

　　With the development of scientific and technological production, the fields involved in the electroplating industry are becoming increasingly extensive. At present, the application of galvanizing has spread to various production and research sectors of the national economy. For example, machine manufacturing, electronics, precision instruments, chemical industry, light industry, transportation, weapons, aerospace, atomic energy, and so on, have significant importance in the national economy.

　　热镀锌桥架（热浸锌桥架）?1、热浸锌说明：

　　Hot dip galvanized bridge (hot-dip galvanized bridge)? 1. Hot dip galvanizing instructions:

　　在各种保护钢基体的涂镀方法中，热浸锌是非常优良的一种。它是在锌呈液体的状态下，经过了相当复杂的物理、化学作用之后，在钢铁上不仅镀上较厚的纯锌层，而且还生成一种锌一铁合金层。这种镀法，不仅具备了电镀锌的耐腐蚀特点，而且由于具有锌铁合金层。还具有电镀锌所无法相比拟的强耐蚀性。因此这种镀法特别适用于各种强酸、碱雾气等强腐蚀环境中。

　　Among various coating methods for protecting steel substrates, hot-dip galvanizing is an excellent one. It is a process in which zinc is in a liquid state and undergoes complex physical and chemical reactions, resulting in the deposition of a thick layer of pure zinc on steel and the formation of a zinc iron alloy layer. This plating method not only has the corrosion resistance characteristics of electroplated zinc, but also has a zinc iron alloy layer. It also has strong corrosion resistance that cannot be compared to electroplated zinc. Therefore, this plating method is particularly suitable for various strong acid, alkali mist and other highly corrosive environments.

　　2、原理：热浸锌层是锌在高温液态下，分三个步骤形成的：

　　2. Principle: The hot-dip zinc layer is formed by zinc in a high-temperature liquid state in three steps:

　　1）铁基表面被锌液溶解形成锌—铁合金相层；

　　1) The iron-based surface is dissolved by zinc solution to form a zinc iron alloy phase layer;

　　2）合金层中的锌离子进一步向基体扩散形成锌铁互溶层；

　　2) The zinc ions in the alloy layer further diffuse into the matrix to form a zinc iron miscible layer;

　　3）合金层表面包络着锌层。3、性能特点：

　　3) The surface of the alloy layer is enveloped by a zinc layer. 3. Performance characteristics:

　　（1） 具有较厚的致密的纯锌层覆盖在钢铁表面上，它可以避免钢铁基体与任何的腐蚀溶液的接触，保护钢基体免受腐蚀。在一般大气中，锌层表面形成一层很薄而密实的氧化锌层表面，它很难溶于水，故对钢基体起着一定保护作用。如果氧化锌与大气中其它成分生成不溶性锌盐后，则防蚀作用更理想。

　　(1) A thick and dense pure zinc layer covers the surface of the steel, which can prevent the steel substrate from coming into contact with any corrosive solution and protect the steel substrate from corrosion. In the general atmosphere, a thin and dense layer of zinc oxide is formed on the surface of the zinc layer, which is difficult to dissolve in water and therefore plays a certain protective role on the steel substrate. If zinc oxide forms insoluble zinc salts with other components in the atmosphere, the anti-corrosion effect is more ideal.

　　（2） 有铁—锌合金层，结合致密，在海洋性盐雾大气及工业性大气中表现特有抗腐蚀性；

　　(2) There is an iron zinc alloy layer, which is dense and exhibits unique corrosion resistance in marine salt spray and industrial atmospheres;

　　（3） 由于结合牢固，锌—铁互溶，具有很强的耐磨性；

　　(3) Due to its strong bonding and zinc iron compatibility, it has strong wear resistance;

　　（4） 由于锌具有良好的延展性，其合金层与钢基附着牢固，因此热镀件可进行冷冲、轧制、拉丝、弯曲等各种成型而不损坏镀层；

　　(4) Due to the excellent ductility of zinc, its alloy layer adheres firmly to the steel substrate, allowing hot-dip plated parts to be formed through various processes such as cold stamping, rolling, drawing, and bending without damaging the coating;

　　（5） 钢结构件热镀锌后，相当于一次退火处理，能有效改善钢基体的机械性能，钢件成型焊接时的应力，有利于对钢结构件进行车削加工。

　　(5) After hot-dip galvanizing of steel structural components, it is equivalent to one annealing treatment, which can effectively improve the mechanical properties of the steel substrate, eliminate the stress during the forming and welding of steel components, and facilitate the turning processing of steel structural components.

　　（6） 热镀锌后的配件表面光亮美观。

　　(6) The surface of the accessories after hot-dip galvanizing is bright and beautiful.

　　（7） 纯锌层是热镀锌中富有塑性的一层镀锌层，其性质基本接近于纯锌，具有延展性，所以它富于挠性。4、应用范围：

　　(7) The pure zinc layer is the most plastic layer of hot-dip galvanizing, with properties similar to pure zinc and ductility, making it flexible. 4. Application scope:

　　热镀锌的应用随着工农业的发展也相应扩大。因此，热镀锌制品在工业（如化工设备、石油加工、海洋勘探、金属结构、电力输送、造船等），农业（如：喷灌、暖房）、建筑（如：水及煤气输送、电线套管、脚手架、房屋等）、桥梁、运输等方面，近几年已大量地被采用。由于热镀锌制品具有外表美观、耐腐蚀性能好等特点，其应用范围越来越广泛。

　　The application of hot-dip galvanizing has also expanded with the development of industry and agriculture. Therefore, hot-dip galvanized products have been widely used in industry (such as chemical equipment, petroleum processing, marine exploration, metal structures, power transmission, shipbuilding, etc.), agriculture (such as sprinkler irrigation, greenhouses), construction (such as water and gas transportation, wire conduit, scaffolding, houses, etc.), bridges, transportation, and other fields in recent years. Due to its beautiful appearance and good corrosion resistance, hot-dip galvanized products are becoming increasingly widely used.

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