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Method for machining a material with high-power density electromagnetic radiation

A technology of electromagnetic radiation and processing materials, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve problems such as material disconnection and difficulty in thickness control

Inactive Publication Date: 2007-04-11
萨米尔有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Other problems are that the material can break uncontrollably and thickness control is difficult

Method used

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  • Method for machining a material with high-power density electromagnetic radiation

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Embodiment Construction

[0012] Processing is carried out with electromagnetic radiation, usually laser light. This radiation has a specific wavelength which is selected according to the material to be processed so that the radiation can penetrate the interior of the material without substantial surface absorption. Since the material-specifically selected beam is also focused inside the material, the result is stress conditions that cause the material to break apart in a controlled manner. This focusing process is carried out in the form of specific wavelengths by suitable methods. For example, laser beams can be focused by optics (lenses or mirrors). In some cases, focusing can also be performed by means of magnetic coils. It is important that the focal point of the radiation be located within the material and / or in the vicinity of a penetrating surface in order to generate radiation of sufficient power density within the material. In this way, high power densities are obtained by focusing the bea...

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Abstract

The invention relates to a method for machining a material with high-power density electromagnetic radiation. The radiation has its wavelength selected material-specifically, such that the radiation penetrates inside the material without substantial surface absorption. The radiation is focused on a spot inside the material and / or in the proximity of a penetration surface and this spot is moved along a desired machining path. The electromagnetic radiation can be provided by laser light and the focusing can be effected by means of optics. The method is particularly useful in cutting glass and the method offers benefits, including only slight heating of the machined workpiece, smoothness of the fracture plane and no vaporization of harmful alloying elements.

Description

technical field [0001] The invention relates to a method for processing materials with high power density electromagnetic radiation. [0002] Tested operations of the method of the invention include the application of glass cutting by means of a working laser. Background technique [0003] The use of lasers has been practiced since early times, for example, for glass cutting, but existing known methods are based on surface absorption of glass, ie energy is absorbed into the surface layer, heating it, and melting and vaporizing the glass. Therefore, the material is broken due to the thermal shock generated in the glass. Other problems are that the material breaks apart uncontrollably and thickness control is difficult. Contents of the invention [0004] It is an object of the present invention to provide an improved machining method which has a number of advantages over prior art methods, including: only slight heating of the workpiece, smooth fracture surfaces (eg in gla...

Claims

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Application Information

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IPC IPC(8): B23K26/38B23K26/04B23K26/40B26DC03B33/04C03B33/09
CPCB23K26/0057C03B33/04C03B33/091B23K26/4075B23K26/40B23K26/53B23K2103/50B23K26/04B23K26/38C03B33/09
Inventor 安蒂·萨尔米宁亚里·霍维科皮
Owner 萨米尔有限公司
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