An automatic production line for hot-dip galvanizing of steel pipes

Abstract

The invention discloses a steel pipe hot-dip galvanizing automatic production line. The steel pipe hot-dip galvanizing automatic production line consists of a steel pipe pretreatment mechanism (1), a steel pipe automatic hot-dip galvanizing mechanism (2) and a galvanizing aftertreatment mechanism (3); the steel pipe pretreatment mechanism (1), the steel pipe automatic hot-dip galvanizing mechanism (2) and the galvanizing aftertreatment mechanism (3) are mounted on the ground in sequence from left to right; the steel pipe pretreatment mechanism (1) is provided with a mist sucking cover (1-9); an elastic car (2-3-1) is arranged on the right side of a pipe fishing mechanism (2-3); and an oven uniform heating fan (3-5-1) is arranged at the top of a primary passivation oven (3-5). The steel pipe hot-dip galvanizing automatic production line treats and galvanizes steel pipes through a single continuous production mode, uses two times of organic and inorganic passivation to largely reduce the environmental protecting energy consumption, improves the working environment cleanness and the product corrosion resisting degree, reduces the user use cost, and achieves the purposes of high efficiency, environmental protection, energy conservation and high quality in steel pipe galvanization.

Description

technical field [0001] The invention belongs to the technical field of galvanizing processing of steel pipes, in particular to an automatic production line for hot-dip galvanizing of steel pipes. Background technique [0002] Steel pipe galvanizing is divided into three stages, that is, pre-treatment - galvanizing - post-treatment. The pre-treatment process steps are generally: degreasing→neutralization cleaning→pickling rust removal→cleaning→soaking in solvent→oven drying→to be plated , the galvanizing process steps are generally: galvanizing→pipe removal→leak zinc cooling bed→pipe drop pipe→outer wiping→inside blowing→water cooling crystallization→post-treatment; the post-treatment process steps are generally: water cooling crystallization→chromate Inorganic passivation→cleaning→organic membrane permeation treatment→drying→packaging. Under the current technical conditions, the steel pipes are hoisted into bundles and clustered steel pipes before and after the pretreatment...

AI Technical Summary

Problems solved by technology

Under the current technical conditions, the steel pipes are hoisted into bundles and clustered steel pipes before and after the pretreatment of the above processes under the current technical conditions. Therefore, the cover-type mist suction device cannot be used above the acid tank for degreasing and derusting (iron oxide). The side suction device can be used, so the energy consumption is high, and at the same time, the environmental pollution of the workshop is also relatively large. Since it is a bundled operation, it cannot be matched with the automatic pipe plating machine for online use, and most of the current side-in and end-out galvanizing processes are used. High requirements on plant equipment, large investment, low degree of intelligence, frequent equipment failures, difficult to guarantee product quality and output

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