Effect of plating AIDS on hot dip galvanized channel steel

所謂助鍍就是將酸洗后的制件再浸入一定成分的氯化鋅銨助鍍液中,提出后再制件表面形成一層薄的氯化鋅銨鹽膜的過程.

The so-called plating aid is the process of immersing the pickled parts into a certain component of zinc ammonium chloride plating aid, and proposing to form a thin zinc ammonium chloride film on the surface of the parts

助鍍的作用

Function of plating aid

1）對鋼鐵表面起到清潔的作用,去除鹽酸洗清后殘留再制件表面的鐵鹽或氧化物,使鋼鐵件再進入鋅浴時**的的表面活*.

1) It can clean the steel surface, remove the iron salt or oxide left on the surface of the remanufactured parts after washing with hydrochloric acid, and make the surface of the steel parts live when entering the zinc bath again

2）再制件表面沉積上一層鹽膜,可防止制件從助鍍池到進入鋅鍋這一段時間內在空氣中銹蝕.

2) A layer of salt film is deposited on the surface of the remanufactured parts to prevent the parts from rusting in the air during the period from the plating aid pool to entering the zinc pot

3）凈化制件浸入鋅浴處的液相鋅,使制件與液相鋅快速浸潤并反映.

3) Purify the liquid zinc at the place where the parts are immersed in the zinc bath, so that the parts and liquid zinc can quickly infiltrate and reflect

制作表面覆蓋的氯化鋅銨鹽膜的**作用

* * effect of making surface covered zinc ammonium chloride film

1】低于200℃時,在制件表面會形成一種復合鹽酸,近似形式為H2[Zn2CL2],這是一種強酸,從而保證再干燥過程中制作表面無法形成氧化膜而保持**狀態.

1】 When the temperature is lower than 200 ℃, a compound hydrochloric acid will be formed on the surface of the workpiece, approximately in the form of H2 [zn2cl2], which is a strong acid, so as to ensure that the surface can not form oxide film and remain in * * state during re drying

2】在200℃以上時,制作表面助鍍液鹽膜中的NH4CL會在較高溫度下分成NH3和HCL,此時HCL對鋼基體的侵蝕占了主要作用,使鋼基體表面不能形成氧化物，保持鋼基體的**狀態.故在熱浸鍍鋅時正確使用含有NH4CL的助鍍劑是很重的.

2】 When the temperature is above 200 ℃, the NH4Cl in the salt film of the surface auxiliary plating solution will be divided into NH3 and HCl at a higher temperature. At this time, the erosion of HCl on the steel matrix plays a major role, so that no oxide can be formed on the surface of the steel matrix and the * * state of the steel matrix can be maintained Therefore, it is very important to correctly use the plating aid containing NH4Cl in hot dip galvanizing

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The above is a detailed introduction about the supply of Jinan channel steel manufacturers. I hope it will be helpful to you If you have any questions, please contact us We will provide service for you with our attitude http://www.thermowel.com