Zinc plating device and method and application

Abstract

The invention provides a zinc plating device and method and application. A plating assisting pool is divided into a plating assisting tank and a plating assisting settling tank, inclined tube settlingis carried out on a plating assisting solvent in the plating assisting settling tank, supernatant obtained after settling flows back to the plating assisting tank, and it can be effectively preventedthat precipitate settles in the plating assisting tank and causes silting with the passing of time, the content of solids in the plating assisting liquid is increased consequently, and adverse effects are caused on the zinc plating quality. A sludge screw pump and a plate-and-frame filter press are arranged, sludge in the plating assisting settling tank is removed regularly, leachate generated infilter pressing flows back to an inclined tube settling area, and recycling of the leachate is promoted. The temperature in the plating assisting tank is controlled to be 60-80 DEG C, and thus on onehand, the reaction of the Fe2+ removing technology can be ensured; and meanwhile, steel structure parts out of the plating assisting tank can make moisture be quickly volatilized in the transfer process under the action of self residual temperature, and zinc bursting occurring when the steel structure parts enter a zinc plating pot can be avoided.

Description

technical field [0001] The invention relates to the technical field of galvanizing, in particular to a galvanizing device, method and application. Background technique [0002] At present, hot-dip galvanizing is generally required for steel structures such as transmission towers and communication towers. The process steps are as follows: [0003] Pickling: rust removal of steel structural parts; [0004] Water washing: to remove FeCl produced during the pickling process 3 and excess HCl; [0005] Entering the plating bath for treatment: surface treatment of steel structural parts, adding H 2 O 2 and ammonia to remove Fe 2+ ; [0006] Enter the galvanizing pot for galvanizing treatment; [0007] Cooling and passivation to obtain a galvanized finished product. [0008] The above prior art has the following problems: [0009] (1) Entering the treatment process of the plating bath, when the concentration of ferrous ions in the plating solution is too high, the quality o...

AI Technical Summary

Problems solved by technology

The previous practice was to manually add H 2 o 2 and ammonia to make Fe 2+ Oxidized to trivalent iron and settled to remove it, the sediment is deposited in the electroplating bath, which will cause siltation over time, and the solid content in the electroplating bath will increase, which will adversely affect the quality of galvanizing;

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