(1) The formed coating shall have good mechanical properties;

（2）涂層形成后對雜質(zhì)的滲透抵抗性能要好；

(2) After the coating is formed, the penetration resistance to impurities is better;

（3）防腐涂料的耐腐蝕性極強且極為穩(wěn)定，對于鋼材表面的保護作用明顯；

(3) The anti-corrosion coating has strong and stable corrosion resistance, and has obvious protective effect on the steel surface;

（4）涂料的附著力要強，能輕易的附著于鋼材表面，涂層的壽命較高；

(4) The coating has strong adhesion, can be easily attached to the steel surface, and the service life of the coating is high;

（5）涂料要易于施工，環(huán)保無污染且成本不高。根據(jù)以上標準，一般鋼結(jié)構(gòu)的防腐工程中選用環(huán)氧富鋅底漆（不銹鋼基材除外）、環(huán)氧云鐵中層漆、氯化橡膠面漆，這些漆的特性基本符合上述標準，且物美價廉，便于施工，是橋梁工程中Z常用于鋼結(jié)構(gòu)防腐的配套涂層。

(5) The coating shall be easy to apply, environmentally friendly, pollution-free and low cost. According to the above standards, epoxy zinc rich primer shall be selected in the anti-corrosion works of general steel structures (except for stainless steel substrate), epoxy micaceous iron intermediate paint and chlorinated rubber finish paint. The characteristics of these paints basically meet the above standards, are of high quality and low price, and are convenient for construction. They are the supporting coatings often used for anti-corrosion of steel structures in bridge engineering.

鋼結(jié)構(gòu)的涂層也有區(qū)分，一般在橋梁工程中將鋼結(jié)構(gòu)的涂層分為底涂、中涂以及面涂。底層涂料主要是針對鋼鐵表面的粘附性要求和防腐蝕保護，底漆的漆膜厚度一般較低，但過鋼表面拋丸后的粗糙度峰值是基本要求，另外要滿足鋼表面的潤濕性，能深入到焊縫、銹痕的較深部位；中涂是對底漆和面漆的附著力；中涂是對底漆和面漆的附著力；

The coating of steel structure is also distinguished. Generally, the coating of steel structure is divided into primer, intermediate coating and surface coating in bridge engineering. The primer is mainly aimed at the adhesion requirements and anti-corrosion protection of the steel surface. The paint film thickness of the primer is generally low, but the peak roughness after shot blasting on the steel surface is the basic requirement. In addition, it should meet the wettability of the steel surface and go deep into the deeper parts of the weld and rust marks; Intermediate coat is the adhesion to primer and finish coat; Intermediate coat is the adhesion to primer and finish coat;

面漆的使用有著美化鋼結(jié)構(gòu)表面的作用，同時面漆還能將紫外線遮擋在涂層之外，減小紫外線對涂層的老化影響，有的面漆還具有耐化學品腐蝕的特性。一般選用長油醇酸磁漆、環(huán)氧樹脂漆、芳烴型聚氨酯漆、氟樹脂漆、氯化橡膠漆、氯化橡膠漆等

The use of finish paint can beautify the surface of steel structure. At the same time, the finish paint can block the ultraviolet ray outside the coating to reduce the aging impact of ultraviolet ray on the coating. Some finish paints also have the characteristics of chemical corrosion resistance. Long oil alkyd enamel, epoxy resin paint, aromatic polyurethane paint, fluororesin paint, chlorinated rubber paint, chlorinated rubber paint, etc. are generally selected

在鋼結(jié)構(gòu)防腐工程中，Z常用的涂裝方法是噴涂、輥涂和手工刷涂。噴涂作業(yè)時，由于稀釋劑的添加量和試件形狀的影響，一般會產(chǎn)生嚴重的流掛現(xiàn)象。為了避免流掛的產(chǎn)生，一般對面積不大的基體采用刷涂的方法，以減少涂料的消耗。涂裝過程中還有一些隱蔽工程，如防護施工，需要嚴格的質(zhì)量控制系統(tǒng)來測量質(zhì)量結(jié)果，因此需要配備準確的檢測儀器。

In the anti-corrosion engineering of steel structure, Z common coating methods are spraying, roller coating and manual brushing. During spraying operation, serious sagging will generally occur due to the influence of the amount of diluent and the shape of the specimen. In order to avoid sagging, brush coating is generally adopted for the substrate with small area to reduce the consumption of coating. There are also some concealed works in the coating process, such as protection construction, which need a strict quality control system to measure the quality results, so accurate testing instruments need to be equipped.