Laser cutting method and system used for amorphous thin belts

Abstract

The invention discloses a laser cutting method and system used for amorphous thin belts. The cutting system comprises a pulse laser, a beam expansion collimating mirror, a scanning galvanometer, a focus lens, an industrial personal computer, an inflation chamber and a worktable, wherein the industrial personal computer is used for controlling the pulse laser and the scanning galvanometer; a clampused for fixing the amorphous thin belts is arranged on the worktable; a light-transmitting lens is arranged on a top surface of the inflation chamber; an inflation opening and an oxygen content measuring interface are arranged on a side surface of the inflation chamber; a pulse laser beam generated by the pulse laser is expanded by the beam expansion collimating mirror, then enters the scanning galvanometer, and is focused by the focus lens through deflection of the scanning galvanometer; and the laser beam enters the surface of the amorphous thin belt through the light-transmitting lens on the inflation chamber after being focused. By adopting the laser cutting method and system, the 0.01-0.05 mm-thick amorphous thin belt can be subjected to complicated-shape high-speed cutting; besides,cutting joints are smooth; and oxidation and slag adhering are avoided.

Description

technical field [0001] The invention belongs to the field of laser processing, and in particular relates to a laser cutting method and system for amorphous thin strips. Background technique [0002] Amorphous alloys have outstanding advantages in strength, corrosion resistance, and wear resistance, and are widely used in consumer electronics, machinery, and chemical industries. Due to the high brittleness of amorphous alloys, it is easy to be broken by mechanical processing, and the thickness of amorphous alloys is relatively thin, which is not conducive to large-scale mechanical processing. Laser cutting uses a beam of high energy density to move on the surface of the workpiece. It is a non-contact processing. Compared with mechanical processing, laser cutting is more suitable for cutting amorphous alloys. [0003] In the field of brazing, amorphous alloys are often used as intermediate layer materials for welding, with a thickness of 0.01-0.1mm. According to the complexit...

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Problems solved by technology

[0003] In the field of brazing, amorphous alloys are often used as intermediate layer materials for welding, with a thickness of 0.01 to 0.1mm. According to the complexity of the welding device, it is necessary to open holes of different shapes on the smaller amorphous strips, and to ensure Machining accuracy and control of notch crystallization and oxidation degree, which cannot be accomplished by traditional processing methods

The Chinese patent with the notification number CN103878482B discloses a laser cutting method for amorphous alloys. This method uses a manipulator to drive the cutting and walking to realize the cutting of 0.1mm-20mm thick amorphous alloys, but it cannot be realized for thinner amorphous alloys. high quality cutting

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