Aluminum-based circuit board laser cutting process and equipment thereof

Abstract

The invention discloses an aluminum-based circuit board laser cutting process and equipment thereof. An aluminum-based circuit board comprises an aluminum substrate, an insulating layer is arranged on the aluminum substrate, a copper foil circuit formed by etching a copper foil and a sunken position are arranged on the insulating layer, a paint layer is arranged on the copper foil circuit and the sunken position, and a groove is formed in the sunken position by the paint layer; a joint cutting mode of carbon dioxide laser and optical fiber laser is adopted, the energy density of the carbon dioxide laser is relatively low, the cutting effect on a paint layer and an insulating layer in the aluminum-based circuit board is good, after the paint layer and the insulating layer are cut, the edges are free of dust, burrs and deformation, and a copper foil circuit is free of damage, blackening and oxidation; and the energy density of the optical fiber laser is relatively high, the cutting effect on the aluminum substrate is relatively high, and the edge of the cut aluminum substrate is smooth and neat.

Description

technical field [0001] The invention belongs to the technical field of laser cutting equipment, and in particular relates to a laser cutting process of an aluminum-based circuit board and equipment thereof. Background technique [0002] Aluminum-based circuit board is a unique metal-based clad circuit board, which has good thermal conductivity, electrical insulation and mechanical processing performance, so it is widely used in the field of electronic circuits. [0003] When the aluminum-based circuit board is applied to a specific product, it needs to be cut according to the circuit design of the product to form a finished aluminum-based circuit board before application. With the refinement and high-end development of electronic circuit products, the cutting precision requirements for aluminum-based circuit boards are very high, and the application scale of aluminum-based circuit boards is large, so the requirements for cutting efficiency of aluminum-based circuit boards ar...

AI Technical Summary

Problems solved by technology

However, this method will lead to blackening of the edge of the aluminum-based circuit board after cutting. The reason is that the single pulse power energy density is relatively low, the heat conversion ratio is relatively high, and the heat accumulation leads to carbonization of the material.

The direct use of high-power pulsed laser can reduce the number of scans, but due to the strong penetrating power of high-power pulses, the heat is easy to diffuse, which will cause oxidation on the rear surface of the product along the width near the cutting edge, which not only damages the appearance, but also may Will affect the use of aluminum-based circuit boards

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