Two-spraying and one-curing equipment and process for corrosion-resistant workpiece adopting composite coating

Abstract

The invention discloses two-spraying and one-curing equipment and process for a corrosion-resistant workpiece adopting a composite coating, and belongs to the technical field of spraying and curing of the composite coating. The two-spraying and one-curing equipment specifically comprises a shot blasting device, a primary spraying recovery device, a primary spraying system, a secondary spraying system, a secondary spraying recovery device, a catenary conveying system, a curing oven device and a catenary driving and whole-line control system, and each of the primary spraying system and the secondary spraying system comprises a centralizing device and a self-locating reciprocating device. In the spraying process, a shaking stand column workpiece can be centralized, and it is ensured that a spray gun accurately stretches into an inner hole of the stand column workpiece; the spray gun can be subjected to self-locating treatment in the spraying process, so that the problem that the spray gun cannot safely and accurately extend into the inner hole of the stand column workpiece for spraying due to thermal expansion and cold contraction of a catenary is solved; and the two-spraying and one-curing equipment and process for the corrosion-resistant workpiece adopting the composite coating has the advantages of less curing times, short production line and small occupied area.

Description

technical field [0001] The invention relates to a two-spray and one-cure equipment and process using a composite coating for anti-corrosion workpieces, and belongs to the technical field of composite coating spraying and curing. Background technique [0002] At present, with the continuous deepening of the concept of environmental protection and green sustainability, high-speed guardrails and columns are changing from the traditional high-energy-consumption and high-pollution galvanized anti-corrosion method to the green, energy-saving and environmentally friendly powder spraying method. [0003] The main process of using epoxy zinc-based polyester composite coating for anti-corrosion metal workpieces is: shot blasting, primary spraying, primary furnace curing, cooling, secondary spraying, secondary furnace curing, and cooling. [0004] The above-mentioned anti-corrosion equipment and process have the following disadvantages: [0005] There are many times of curing, long pr...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the deficiencies in the background technology, the present invention provides a two-spray and one-fix equipment and process using a composite coating anti-corrosion workpiece, which can perform righting treatment on the swaying column workpiece during the spraying process to ensure that the spray gun can accurately penetrate into the inner hole of the column workpiece ;The spray gun can be self-locating during the spraying process, so that the spray gun will not be able to safely and accurately extend into the inner hole of the column workpiece for spraying due to the thermal expansion and contraction of the catenary; it has less curing times and a shorter production line , the advantages of small footprint; it has the advantages of high utilization rate of curing heat energy, less gas consumption, and less polluting exhaust emissions

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