Hot dip galvanized bridge is to immerse the steel members after rust prevention treatment into the molten zinc at a high temperature of about 600 ℃, so as to make the surface of the steel members adhere to the zinc layer. The thickness of the zinc layer shall not be less than 65 for thin plates within 5mm μ m. Not less than 86 for thick plate μ m. Thus, it has the purpose of corrosion resistance. As a reasonable and effective method of metal corrosion prevention, hot-dip galvanizing process has been widely used in metal structures and facilities in various industries, and its corrosion resistance has reached more than ten years.

1. 什么是熱鍍鋅電纜橋架

1. What is hot galvanized cable tray

以冷軋鋼板制作而成，表面工藝為熱鍍鋅，由槽式、托盤式或梯階式的直線段、彎通、三通、四通組件以及托臂（臂式支架）、吊架等構(gòu)成具有密接支撐電纜的剛性結(jié)構(gòu)系統(tǒng)之全稱。

It is made of cold-rolled steel plate, and the surface process is hot-dip galvanization. It is the full name of a rigid structural system with closely connected supporting cables, which is composed of trough type, tray type or ladder type straight sections, elbow, tee, cross components, corbel (arm support), hanger, etc.

2. 熱鍍鋅橋架的原理是什么

2. What is the principle of hot galvanized cable tray

熱鍍鋅層是鋅在高溫液態(tài)下，分3個流程產(chǎn)生的：

The hot-dip galvanized layer is produced by three processes under the high-temperature liquid state of zinc:

（1）鐵基表層被鋅液融解產(chǎn)生鋅—鐵合金相層。

(1) The surface layer of iron base is melted by liquid zinc to produce zinc iron alloy phase layer.

（2）合金層中的鋅離子進(jìn)一步向基體擴(kuò)散產(chǎn)生鋅鐵互溶層。

(2) Zinc ions in the alloy layer further diffuse to the matrix to produce a zinc iron miscible layer.

（3）合金層表層包絡(luò)著鋅層。

(3) The surface of the alloy layer is surrounded by a zinc layer.

3. 熱鍍鋅橋架的性能特點(diǎn)

3. Performance characteristics of hot-dip galvanized Bridge

（1）有著偏厚的緊密的純鋅層覆蓋在鋼鐵表面上，它能夠 防止鋼鐵基體與明顯的腐蝕溶液的接觸，維護(hù)鋼基體免遭腐蝕。在平?？諝庵?，鋅層表面形成一層很薄而密實(shí)的氧化鋅層表面，它難以溶于水，故對鋼基體起著一定維護(hù)功能。如果氧化鋅與空氣中其他的成分生成不溶性鋅鹽后，則防蝕功能更理想。

(1) It has a thick and close pure zinc layer covering the steel surface, which can prevent the steel substrate from contacting with any corrosion solution and maintain the steel substrate from corrosion. In normal air, a thin and dense zinc oxide layer is formed on the surface of the zinc layer, which is difficult to dissolve in water, so it plays a certain maintenance function on the steel matrix. If zinc oxide and other components in the air form insoluble zinc salts, the anti-corrosion function is more ideal.

（2）有著鐵—鋅合金層，緊密結(jié)合，在海洋性鹽霧空氣及工業(yè)性空氣中表現(xiàn)抗腐蝕性。

(2) It has an iron zinc alloy layer, which is closely combined and shows corrosion resistance in marine salt spray air and industrial air.

（3）因?yàn)榻Y(jié)合穩(wěn)固，鋅—鐵互溶，有著較強(qiáng)的耐磨性能。

(3) Because the combination is stable, zinc iron is miscible, and has strong wear resistance.

（4）因?yàn)殇\有著優(yōu)良的延展性，其合金層與鋼基附著穩(wěn)固，因而熱鍍件可進(jìn)行冷沖、軋制、拉絲、彎曲等各種各樣成型而不損壞鍍層。

(4) Because zinc has excellent ductility and its alloy layer is firmly attached to the steel base, hot-dip plated parts can be formed by cold stamping, rolling, wiredrawing, bending and other forms without damaging the coating.

（5）鋼結(jié)構(gòu)件熱鍍鋅后，等同于一次退火處理，能合理有效改進(jìn)鋼基體的機(jī)械性能方面，清除鋼件成型焊接時的應(yīng)力，有益于對鋼結(jié)構(gòu)件進(jìn)行車削加工。

(5) After hot galvanizing of steel structure, it is equivalent to one-time annealing treatment, which can reasonably and effectively improve the mechanical properties of steel matrix, remove the stress during steel forming and welding, and is beneficial to turning of steel structure.

（6）熱鍍鋅后的件表面明亮美觀大方。

(6) The surface of hot-dip galvanized parts is bright and beautiful.

（7）純鋅層是熱鍍鋅中具有塑性的一層鍍鋅層，其特性基本上貼近于純鋅，有著延展性，因而它富有撓性。

(7) Pure zinc layer is a plastic zinc layer in hot-dip galvanizing. Its characteristics are basically close to pure zinc and have ductility, so it is flexible.

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