Welding equipment of plastics acidic bath and welding process thereof

Abstract

The invention relates to the technical field of cold rolling and pickling line, in particular to a welding equipment and a welding process for a plastic pickling groove . The welding equipment is composed of a worktable, rails, a walking trolley, a machine base on the trolley, a horizontal sliding mechanism, an adjustment screw, a slant sliding mechanism and a welding device. The welding device iscomposed of a motor, a reduction gear, an auger delivery device, a heater and a welding head. The welding process comprises the following steps: the adjustment screw adjusts the degree of inclinationof the slant sliding mechanism, welding material is added into a feed hopper, the power supply of the heater is powered on, the temperature of each heating zone of a machine barrel is respectively controlled in the range as a first zone below 190 DEG C, a second zone below 230 DEG C, and a third zone below 280 DEG C, and the moving speed is controlled to be 0.05-0.08 m / s. The invention has the advantages that the welding quality is improved, and the weld seam factor can reach above 0.9; the equipment is convenient to install and maintenance free, and has long service life. The weld seam is formed in one time, no repeated factory build-up welding is required; the weld seam is free from pore, undercut and over burning, with smooth surface and graceful form, needs no dressing, and is corrosion and ageing resistant.

Description

technical field [0001] The invention relates to the technical field of cold-rolled pickling production lines, in particular to welding equipment and a welding process for plastic pickling tanks. Background technique [0002] The pickling tank is the main equipment of the cold rolling pickling production line. In the past, the pickling tank adopted the technical scheme of steel structure lined with rubber and then lined with acid-resistant bricks. Since the working temperature of the pickling process reaches 80-90°C and changes frequently, the lining is easy to fall off under the action of frequent alternating working temperatures. After the lining falls off, the steel structure is quickly corroded and leaks acid. In order to completely solve the shedding problem of the steel structure lined with rubber and then lined with acid-resistant bricks, polypropylene plastic pickling tanks are used to replace the pickling tanks with steel structures lined with rubber and lined with ...

AI Technical Summary

Problems solved by technology

The current plastic welding uses manual hot air welding, but the welding quality is poor: the weld coefficient is only 0.4-0.5, the lower the weld coefficient, the worse the welding quality

The polypropylene plastic sheet used for welding the pickling tank is relatively thick, and manual hot air welding can only be multi-layer surfacing, which cannot guarantee the welding quality, which directly affects the service life of the pickling tank

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