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Pretreatment method of atmospheric plasma on surface of automobile accessory

A technology of atmospheric pressure plasma and auto parts, applied in the direction of surface pretreatment, device for coating liquid on the surface, chemical instruments and methods, etc., can solve the problems of unqualified products, low production efficiency, cumbersome procedures, etc. Achieve the effects of saving grinding and high-pressure washing, improving production efficiency and simplifying the process flow

Active Publication Date: 2009-06-24
DONGGUAN HIROSAWA AUTOMOTIVE TRIM
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  • Abstract
  • Description
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Problems solved by technology

This method has cumbersome procedures, low production efficiency and high cost, and it is easy to produce unqualified coating when processing some workpieces with complex surface shapes, resulting in product defect rate.

Method used

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  • Pretreatment method of atmospheric plasma on surface of automobile accessory

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Embodiment Construction

[0017] The present invention is described further below:

[0018] Place the workpiece to be processed on the working table of the atmospheric pressure plasma processing equipment; the spray gun of the atmospheric pressure plasma processing equipment moves at a constant speed relative to the workpiece at a position of 3 mm to 40 mm from the surface of the workpiece, and dissociates the air from the air under normal pressure into The plasma beam is sprayed onto the surface of the workpiece, and the surface of the workpiece is treated with atmospheric pressure plasma.

[0019] Plasma, also known as plasma, is an ionized gas-like substance composed of atoms deprived of some electrons and positive and negative electrons generated after atoms are ionized; when the temperature of ordinary gas rises, the thermal motion of gas particles intensifies, making the particles A strong collision occurs between them, and electrons in a large number of atoms or molecules are knocked off, thereb...

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Abstract

The invention relates to the technical field of surface treatment of automobile parts, in particular to a normal-pressure plasma surface pretreatment method for the automobile parts, which comprises: putting a workpiece on a work top of a normal-pressure plasma treatment device; moving a spray gun at uniform velocity on a position which is 3 to 40 millimeters away from the surface of the workpiece to spray plasma beams dissociated by the air at normal pressure to the surface of the workpiece for normal-pressure plasma treatment; and removing pollutant and dust after treating the surface of the workpiece. The normal-pressure plasma surface pretreatment method for the automobile parts saves the procedures of grinding, high-pressure flushing and the like, and simplifies the technological flow; and energy of plasma can drive molecules on the surface of the workpiece to react with oxygen and nitrogen in the air to form new active functional groups, so that the normal-pressure plasma surface pretreatment method for the automobile parts obviously improves the adhesive force on coating materials, does not need primary coat, reduces the cost, and improves the excellent rate of products.

Description

Technical field: [0001] The invention relates to the technical field of surface treatment of auto parts, in particular to a pretreatment method of normal-pressure plasma on the surface of auto parts. Background technique: [0002] Some auto parts made of materials such as plastic, EPDM profiles, and aluminum, such as airbag covers, steering wheels, etc., need to be painted before the coating process to ensure the coating effect. The surface of the workpiece is pretreated, the purpose of which is to remove oil, dust, organic pollutants and other stains on the surface of the workpiece, clean the surface of the workpiece, and at the same time improve the tension and adhesion of the surface of the workpiece, so as to avoid bubbles during the coating process and poor adhesion of the paint. stable defects. [0003] At present, the methods of pre-painting the above-mentioned types of workpieces generally include grinding, high-pressure washing, etc. to clean the surface of the wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/12B08B7/00
Inventor 庄吴钏伍利辉
Owner DONGGUAN HIROSAWA AUTOMOTIVE TRIM
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