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Beam splitting type laser roughing modulation device

A laser texturing and spectroscopic technology, applied in laser welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of complex shape of chopper disc, long focusing distance, spot size and position can not be adjusted, etc., to achieve a reasonable focus spot and energy density, high wear resistance, effective preheat quenching and texturing

Inactive Publication Date: 2007-10-17
SHANGHAI JIAO TONG UNIV
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  • Abstract
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Problems solved by technology

In addition, the device has a long focusing distance, which makes it difficult to obtain a small focal spot, and the size and position of the spot cannot be adjusted. The shape of the chopper disc is complicated, and satisfactory processing accuracy cannot be obtained. The rotation speed of more than 10,000 revolutions per minute will also affect the side blowing of auxiliary gas
Therefore, the beam modulation device needs to be redesigned

Method used

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  • Beam splitting type laser roughing modulation device
  • Beam splitting type laser roughing modulation device
  • Beam splitting type laser roughing modulation device

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Embodiment Construction

[0014] The embodiments of the present invention will be described in detail below with reference to the drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation modes and specific operation procedures are given, but the protection scope of the present invention is not limited to the following Mentioned examples.

[0015] In order to obtain a higher texturing power density and to keep the focusing lens away from the workpiece to be processed, a beam expander telescope can be added to the light guide system of the laser processing system to reduce the divergence angle of the laser beam, and then focus again. The beam waist position (focus position) of the beam is transformed into the allowable range for processing, thereby increasing the processing range and effective focal depth of the laser beam, and obtaining a smaller focal spot diameter. In order to turn continuous light into pulsed light, a mechanic...

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Abstract

A dichroic laser texturing and regulating device for laser texturing process comprised a continuous laser generator, an expanding telescope, a dichroic turntable, a light beam conversion and combination mirror, a focusing mirror and a roller. The expanding telescope is positioned between the continuous laser generator and the focusing mirror, the dichroic turntable and the light beam conversion and combination mirror is disposed between the expanding telescopes, the dichroic turntable is inserted between the light beam conversion and combination mirror, and the focusing mirror is located above the roller. The continuous laser beam given off by the continuous laser generator becomes pulse light after splitted by the revolving dichroic turntable, the light beam conversion and combination mirror implements light path shift and conversion of light beam reflected and splitted by the dichroic turntable, finally the pulse laser beam is focused to the roller by the focusing mirror after being expanded by the expanding telescope. Accordingly, the texturing roller surface processed by the laser regulating device of the invention has isotropy and even roughness, and higher wearability.

Description

Technical field [0001] The invention relates to a beam transmission system used in the technical field of laser processing, in particular to a spectroscopic laser texturing modulation device for laser texturing processing. Background technique [0002] Laser texturing is a new cold-rolled steel roll texturing technology recently developed in the steel industry to produce high-quality steel plates. When laser texturing rolls, pulsed laser beams with high energy density and high repetition frequency are concentrated and irradiated on the surface of the rolls to form several small molten pools. At the same time, the auxiliary gas side blows the molten material in the molten pool and deposits on the edge of the molten pool according to the specified requirements. ; After the light pulse stops, the melt of the pits cools rapidly, forming a hardened surface of the pits and pit-side convex structures. The continuous laser is modulated by the laser modulation disc to form a pulsed laser,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/06B23K26/36B23K26/062B23K26/064
Inventor 胡德金万大平王裕明归振兴刘红斌
Owner SHANGHAI JIAO TONG UNIV
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