Peeling method for UV ink on metal substrate surface

Abstract

The invention relates to a peeling method for a UV ink on a metal substrate surface. The peeling method can be used for simply and efficiently removing the peeled swelling UV ink and preventing secondary adhesion on metal surface; air bubbles generated by air blowing can stir a paint remover and can promote de-molding effect; the paint remover can be reused, the use rate is high and the economic cost is lowered; automatic computer operation in the whole process can be realized; labor cost is ultralow; the peeling method is convenient for industrialization.

Description

technical field [0001] The invention relates to the field of metal surface coating removal, in particular to a metal surface protective UV ink stripping device, a method for using the stripping device, a combined device and a combined process centered on the stripping device. Background technique [0002] The so-called metals, such as stainless steel alloys, refer to high-alloy steels that can resist the corrosion of the atmosphere, weak corrosive media, and strong corrosive media, and have excellent corrosion resistance, formability, environmental compatibility, and can be used in a wide temperature range. High strength, high toughness and other characteristics, so it has been widely used in military industry, heavy industry, light industry, electrical industry, aerospace, shipbuilding, daily necessities, architectural decoration and other industries. [0003] At the beginning of metal manufacturing, many metal raw materials need to be smelted-casting-forging-opening-rollin...

AI Technical Summary

Problems solved by technology

In use, first use clearing potion to soften the ink, and then completely peel it off. The potassium hydroxide and liquid alkali in the components will soak and soften the ink in the board and the hole, and then use a high-pressure water gun to peel it off. The existing technology has the following problems: (1) The stripping agent has no effect on the substrate, but the high-pressure water gun will obviously have a significant mechanical impact on the material, resulting in deformation; (2) The green paint after stripping is directly discharged, which is not safe and environmentally friendly

This treatment method also appears in CN106497213A. First, after cleaning the surface oil and dirt of the workpiece to be stripped, it is completely immersed in the alkaline paint stripper. The treatment temperature is 25°C-60°C, and the treatment time is 20±10min, when the paint removal treatment of the workpiece is completed, take the workpiece out of the alkaline paint remover, and rinse off the coating residue attached to the surface with clean water; , In the case of accumulated residues, the workpiece can be cleaned with a high-pressure water gun. After cleaning, the workpiece can be subjected to the next process according to the customer's needs. This rough treatment method is not advocated by a harmonious society.

[0006] In addition, as CN105670375A Zhejiang University provides a kind of polyester enameled wire stripping process: (a) the paint remover is added in the lye tank, and heated to the paint film treatment temperature of the polyester enameled wire; (b) the lye tank is The paint remover in the pump is pumped into the bottom of the paint stripping bucket with stirring paddle; put the polyester enameled wire to be stripped into the paint stripping bucket; (c) start stirring after the overflow, and the speed is 30-300 revolutions per minute; The paint film that comes off overflows from the overflow tank on the top of the paint stripper along with the paint stripper, and flows into the filter bucket; (d) the paint film that comes off and the paint stripper are separated in the filter bucket, and the paint stripper continues to enter the lye tank, The more excellent part of the prior art is to filter and separate the paint film, but there are still the following problems: (1) strong alkali has high requirements on the container, and the stripping tank is an open system, and the paint stripper is easy to volatilize or sputtering; (2) The peeled paint film floats above the paint remover. When the workpiece is lifted out of the lye paint remover tank, the paint film still has a great probability of adhering to the surface of the substrate, and secondary treatment is necessary adhered paint film

[0007] Secondly, as CN103923770A discloses a plastic adhesive layer cleaning agent, a plastic cleaning process and cleaning equipment using the cleaning agent, after the stripping operation is completed, the cleaning agent in the reactor is exported and recycled after being filtered; then, the plastic fragments are mixed with Adhesive layer stripped matter is introduced into the separation tank, and according to the density of the plastic fragments and the density of the adhesive layer stripped matter, a separation liquid with an appropriate concentration is placed in the separation tank, so that the plastic fragments and the adhesive layer stripped matter are separated in the separation liquid according to the density. Separation, forming floating plastic fragments and sinking adhesion layer peelings, or floating adhesion layer peelings and sinking plastic fragments, although the separation of peelings by different densities is disclosed, there is no disclosure of specific separation liquids, ink substances, Just mentioning a separation method, and the whole process is complicated and costly

To sum up: there are at least the following areas to be improved in the prior art: (1) The efficiency of the paint remover is low, and it is not easy to completely peel off; (2) The paint film after peeling is inconvenient, not environmentally friendly, and not conducive to industrialization

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