Device for continuously hot dip galvanizing pipe

Abstract

The invention provides a device for continuously hot dip galvanizing a pipe. A continuous production line device is adopted to solve the problem that a steel pipe cannot be continuously galvanized in the prior art. The device for continuously hot dip galvanizing the pipe comprises an uncoiling machine 1, cropping tail scissors 2, a first withdrawal roll 3, a steel plate welder 4, a withdrawal roll 5, a disc-type loop 6, a second withdrawal roll 7, a straightening device 8, a rolling molding machine 9, a straight welding machine 10, a pre-heating cleaner 11, a zinc groove 12, an annular air knife 13, a cold air blower 14, a steel pipe clamping and delivering device 15, fixed-length rear scissors 16 and a stacking apparatus. The stacking apparatus is provided with two stackers, one of which is put into operation while the other is for later use. The device for continuously hot dip galvanizing the pipe improves the production efficiency and saves cost.

Description

technical field [0001] The invention belongs to the field of galvanizing in the metallurgical industry, in particular to the production field of hot-dip galvanizing. Background technique [0002] At present, some of the original domestic galvanized pipes are produced by electroplating, and some are welded by galvanized sheets. The galvanized pipes are galvanized by electro-galvanizing. The thickness of the coating is difficult to control, the coating is thin, the production speed is slow, and the cost is high. Most of the hot-dip galvanizing adopts the cage dip galvanizing method. The steel pipe is cut into the required length, placed in the cage and immersed in a zinc pot. In this way, the zinc layer is coated on both sides, but the actual application is only The outer surface of the steel pipe needs to be galvanized, and the waste of double-sided galvanizing is serious; in addition, the welding process of the galvanized sheet is to roll-form the hot-dip galvanized sheet an...

AI Technical Summary

Problems solved by technology

[0002] At present, some of the original domestic galvanized pipes are produced by electroplating, and some are welded by galvanized sheets. The galvanized pipes are galvanized by electro-galvanizing. The thickness of the coating is difficult to control, the coating is thin, the production speed is slow, and the cost is high. Most of the hot-dip galvanizing adopts the cage dip galvanizing method. The steel pipe is cut into the required length, placed in the cage and immersed in a zinc pot. In this way, the zinc layer is coated on both sides, but the actual application is only The outer surface of the steel pipe needs to be galvanized, and the waste of double-sided galvanizing is serious; in addition, the welding process of the galvanized sheet is to roll-form the hot-dip galvanized sheet and weld it. Seam repair galvanized layer

Galvanized on steel pipes, the production efficiency of these methods is low, continuous production is not possible, the process is complicated, the production cost is high, and the labor intensity is high.

Images