Electrophoresis apparatus and process suitable for automobile leaf spring

Abstract

The invention discloses an electrophoresis apparatus and process suitable for an automobile leaf spring. Ball-blasted reeds are subjected to degreasing, parkerizing, water washing and other pretreatments through a conveying chain, then enter an electrophoresis trough, are automatically dried, subjected to strong cold and cooled down after electrophoresis and are finally off-line; the reeds are assembled into a leaf spring assembly after electrophoresis, and the assembly is subject to surface paint spraying through an electrostatic painting line so as to meet the requirements on product corrosion protection and surface colors of clients. The invention overcomes the shortcomings of a conventional leaf spring coating technology, and creates a brand-new leaf spring coating technology-the process route and production equipment adopting leaf spring uniwafer electrophoresis plus assembly surface painting. The process saves energy and labor, achieves high utilization ratio of paint, enables the salt fog resisting capability of the leaf spring to be higher than 300 h, and simultaneously improves and prolongs the surface quality and the service life of the reeds.

Description

[0001] technical field [0002] The invention relates to the technical field of coating technology for automobile leaf springs, in particular to an electrophoresis device and a process suitable for automobile leaf springs. Background technique [0003] Automobile leaf springs are assembled from a plurality of reeds of different lengths. The existing coating of automobile leaf springs generally adopts: after the reeds are shot peened, a single piece of anti-rust primer is sprayed (no pretreatment process), and then assembled. The rear assembly is sprayed with topcoat to meet product anti-corrosion and surface color requirements. Primers and topcoats are generally sprayed by hand or electrostatically. The advantages of manual spraying are simple equipment, less investment, relatively low operating costs, and easy control. The disadvantage is that the paint utilization rate is low (only about 40%), wastes resources and pollutes the environment; although the paint utilizati...

AI Technical Summary

Problems solved by technology

The advantages of manual spraying are simple equipment, less investment, relatively low operating costs, and easy control. The disadvantages are low paint utilization (only about 40%), waste of resources, and environmental pollution; although the paint utilization of electrostatic spraying has increased (50%) %~60%), but due to the electrostatic shielding between the reeds, the paint film adsorption effect between the ears and the reeds of the spring assembly is poor, and the salt spray test is only 60~90 hours; a few use the leaf spring assembly to degrease→ Phosphating → electrophoresis → low-temperature drying coating process, this process has defects such as inability to absorb paint film between sheets, and paint sticking to the ear holes of the leaf spring assembly, and the salt spray resistance time is 90 to 120 hours

None of the above processes can meet the standard requirements of domestic high-end automobiles and European and American automobile leaf spring salt spray resistance time greater than 300 hours

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