1、 Hot dip galvanizing process

鋅具有耐腐蝕性，浸鋅作為一種獻(xiàn)身陽(yáng)來(lái)保護(hù)陰金屬的方法，壽數(shù)取決于它的腐蝕鋅鍍層的阻力和腐蝕速度。熱浸鋅的鋅層厚度一般在6μm以上，鋅與鐵的結(jié)合面構(gòu)成一層鋅鐵合金，進(jìn)步了鋅層的粘附性。國(guó)外對(duì)各類不一樣環(huán)境前提下的熱浸鍍鋅層進(jìn)行了大氣顯露試驗(yàn)，從檢驗(yàn)效果來(lái)看，熱浸鋅能夠滿意電纜橋架運(yùn)行壽數(shù)的要求。

Zinc has corrosion resistance, and as a method of sacrificing yang to protect negative metals, the lifespan of zinc immersion depends on the resistance and corrosion rate of its corroded zinc coating. The zinc layer thickness of hot-dip galvanizing is generally 6 μ Above m, the interface between zinc and iron forms a layer of zinc iron alloy, which improves the adhesion of the zinc layer. Foreign countries have conducted atmospheric exposure tests on hot-dip galvanized coatings under different environmental conditions. From the inspection results, hot-dip galvanizing can meet the requirements for the operating life of cable trays.

因?yàn)闊峤\具有耐腐蝕性、高功用和比，因此熱浸鋅鋼橋被廣泛運(yùn)用于國(guó)內(nèi)外。熱浸鋅不易變形等問(wèn)題，需要在電纜橋架的構(gòu)造上及浸鋅技術(shù)上加以思考。別種涂層的橋架抗紫外線才干差，容易引起銹蝕，構(gòu)成大面積涂層起泡脫皮，一般不適合戶外運(yùn)用。

Due to its corrosion resistance, high performance, and price ratio, hot-dip galvanized steel bridges are widely used both domestically and internationally. The difficulty of deformation caused by hot-dip galvanizing requires consideration in the construction of cable trays and galvanizing technology. Other types of coated cable trays have poor UV resistance and are prone to rusting, resulting in large areas of coating blistering and peeling. They are generally not suitable for outdoor use.

二、電鍍鋅工藝

2、 Electrogalvanizing process

對(duì)于沒(méi)有特殊要求的電纜橋架來(lái)說(shuō)，電鍍鋅與熱浸鋅比較起來(lái)技術(shù)簡(jiǎn)單，本錢較低。電鍍鋅經(jīng)鈍化處理后能夠明顯地進(jìn)步其防腐功用。電鍍鋅層一般在6μm左右，因此不適用于對(duì)耐腐蝕壽數(shù)要求較高的場(chǎng)合。

For cable trays without special requirements, compared to hot-dip galvanizing, electrogalvanizing has a simpler technology and lower cost. After passivation treatment, electrogalvanizing can significantly improve its anti-corrosion function. The galvanized layer is generally at 6 μ Around m, therefore it is not suitable for occasions with high requirements for corrosion resistance lifespan.

電鍍鋅我國(guó)有頒布規(guī)范：如GB/T13912-2002、JT/T281-95、GB2694-81等。挑選電鍍層時(shí)，涂層厚度，涂層吸附力強(qiáng)，通過(guò)耐腐蝕試驗(yàn)，不同的訴求對(duì)于目標(biāo)的挑選也是不同的。我國(guó)現(xiàn)在出產(chǎn)鍍鋅橋架的廠家，在參考國(guó)標(biāo)時(shí)也不盡相同。選用電鍍鋅鎳合金或鍍鋅后進(jìn)行高鈍化處理，可以明顯進(jìn)步橋架耐蝕性。

Our country has issued standards for electrogalvanizing, such as GB/T13912-2002, JT/T281-95, GB2694-81, etc. When selecting electroplated coatings, the thickness of the coating and the strong adsorption capacity of the coating are different. Through corrosion resistance tests, different demands for target selection are also different. The manufacturers currently producing galvanized cable trays in China are also different when referring to national standards. Choosing electroplated nickel alloy or high passivation treatment after galvanizing can significantly improve the corrosion resistance of the bridge.

三、粉末噴涂工藝。

3、 Powder spraying process.

PVC資料一般是粉末涂料，聚酯粉末或防腐粉末，涂層厚度約60μm 。靜電噴涂具有外形漂亮，抗化學(xué)腐蝕的功用。但與金屬鍍層比較，粘附性低，耐臟性和耐磨損較差。遭受簡(jiǎn)單外部撞擊，可致使其局部涂層掉落，使得內(nèi)部鋼材腐蝕，構(gòu)成大面積涂層起泡脫皮。運(yùn)用UV涂料的橋架，一般不適合在戶外運(yùn)用。

PVC materials are generally powder coatings, polyester powders, or anti-corrosion powders, with a coating thickness of approximately 60 μ M. Electrostatic spraying has the function of beautiful appearance and resistance to chemical corrosion. However, compared to metal coatings, their adhesion is low, and their resistance to dirt and wear is poor. Suffering from a simple external impact can cause local coatings to fall off, causing corrosion of internal steel and forming large areas of coating blistering and peeling. Cable trays using UV coating are generally not suitable for outdoor use.

四、涂防銹漆。

4、 Apply anti rust paint.

較大尺度的構(gòu)件，因?yàn)殄冧\設(shè)備條件所限，一般只能選用涂防銹漆的方法來(lái)處理。這當(dāng)然具有本錢低，操作便利等優(yōu)勢(shì)，但防腐蝕性能較差。其工程壽數(shù)短暫，為了確保工程質(zhì)量，一般不宜運(yùn)用。

Larger scale components, due to the limitations of galvanizing equipment conditions, can generally only be treated by applying anti rust paint. This certainly has advantages such as low cost and convenient operation, but its anti-corrosion performance is poor. Its engineering lifespan is short, and in order to ensure the quality of the project, it is generally not suitable for use.

不管在沿海地區(qū)濕度高或是空氣二氧化硫指數(shù)高的區(qū)域，現(xiàn)已廣泛運(yùn)用鋁合金橋架。電纜橋架質(zhì)料為鋁合金的，大氣露出試驗(yàn)效果表明，該電纜橋架在耐腐蝕方面具有明顯優(yōu)勢(shì)，特別是選用陽(yáng)氧化鋁腐蝕，效果非常好。

Regardless of the high humidity or high sulfur dioxide index in coastal areas, aluminum alloy cable trays are now widely used in the country. The material of the cable tray is aluminum alloy, and the atmospheric exposure test results show that the cable tray has obvious advantages in corrosion resistance, especially when using anodized alumina for corrosion, the effect is very good.