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Method for performing three-proofing treatment on circuit board by using ultrasonic waves

A circuit board and ultrasonic technology, which is applied in the field of three-proof treatment of circuit boards, can solve the problems of missing coating, multi-coating, uneven coating, etc., and achieve the effect of no accumulation, high spraying efficiency and uniform coating

Active Publication Date: 2014-01-22
JIANGSU TONGCHI POWER AUTOMATION
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Problems solved by technology

These methods have uneven coating, and there are imaginations of over-coating and missing coating

Method used

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  • Method for performing three-proofing treatment on circuit board by using ultrasonic waves

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Embodiment Construction

[0021] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] A technology for three-proof treatment of circuit boards using ultrasonic waves, characterized in that it includes the following steps:

[0023] Step (1) Set up the circuit boards in the cleaning tank in an orderly manner, inject a special cleaning agent for circuit boards or an environmentally friendly electronic ultrasonic cleaning agent into the cleaning tank, and completely soak the circuit boards in the tank; turn on the ultrasonic generator to generate high-pressure air bubbles, After ultrasonic cleaning for 20-30 minutes, disconnect the ultrasonic generator and take out the circuit board. Stand neatly on a stand and drain the cleaning agent.

[0024] Step (2) Put the cleaned and filtered circuit boards into the oven, and the loading quantity shall be half ...

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Abstract

The invention discloses a method for performing three-proofing treatment on a circuit board by using ultrasonic waves. The method comprises the steps as follows: 1), ultrasonic cleaning: before coating, a cavitation effect in an ultrasonic liquid is used for changing electric energy into mechanical vibration for generating high-pressure air bubbles, and surface cleaning of the circuit board is completed; 2), drying; 3), covering; 4), dilution; 5), ultrasonic spraying: a three-proofing protection paint is atomized by the aid of an atomization function produced in the liquid through ultrasonic vibration, micron grade tiny droplets are produced, and a dense spraying purpose on the surface of the to-be-treated circuit board is achieved; and 6), curing. The method is reliable and practical, a cured protective film is uniform, the adhesive force is high, the product reliability is improved, and the after-sales service cost is decreased.

Description

technical field [0001] The invention relates to a technology for three-proof treatment of circuit boards by using ultrasonic waves, which belongs to the field of electronic product manufacturing. Background technique [0002] In the practical application of electronic products, the erosion of products by high dust, salt spray, humidity and high temperature is very common. The electronics industry usually implements moisture-proof, salt-spray, and mildew-proof treatments for electronic products used in harsh environments. The electronics industry calls this moisture-proof, salt-spray, and mildew-proof treatment the three-proof treatment. As the main electronic component of electronic products, circuit board (referred to as PCB) must have good electrical performance and corrosion resistance. The circuit board is the focus of three defenses. The protection performance of the circuit board will directly affect the electrical performance and service life of electronic products....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/22B08B3/12
Inventor 殷久龙万年旺
Owner JIANGSU TONGCHI POWER AUTOMATION
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