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Method for blunting sharp edges of glass objects

A glass edge and object technology, applied in glass manufacturing equipment, glass cutting devices, welding/welding/cutting items, etc., can solve problems such as low controllability, reduced strength, and falling material fragments

Inactive Publication Date: 2015-12-09
佩尔科姆杜布纳机械制造厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Disadvantages of this method include: possible reduction in strength due to residual thermal stress, and possible shedding of material chips (chips) when separation is performed, and due to the different distribution of power density in each treatment spot (uniform distribution only exists in theory) resulting in low controllability of the process

Method used

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  • Method for blunting sharp edges of glass objects
  • Method for blunting sharp edges of glass objects
  • Method for blunting sharp edges of glass objects

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Embodiment Construction

[0029] According to the present invention (see figure 1 ), a method of passivating sharp edges of a glass object comprising: treating the edge of a glass object 1 with a focused laser beam 2 of annular cross-section while relatively moving the glass object and / or the beam. The treatment with the laser beam consists in heating the glass edge 4 to a temperature above the glass transition temperature, ie T>Tg. This causes glass material to be removed from the edge 4 of the glass object 1 in the form of fragments 3, forming a chamfer.

[0030] In addition if figure 1 As shown in , in one embodiment, a laser beam 2 (whose hot spot preferably has an annular ellipse) is directed at an angle to the edge of the glass 1 to be chamfered with respect to the plane 3, which is the edge of the glass 1. Continuation of the surface facing the laser beam 2. Under normal circumstances, the laser beam moves along the edge of the glass 1 in a straight line, preferably at a constant speed and a ...

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Abstract

The invention relates to methods for processing glass objects, in particular, to methods of blunting sharp edges of glass objects. A method comprises treating a glass edge with a focused laser beam, while relatively moving the glass object and / or the beam, said treating of the glass edge being carried out with a laser beam having a ring-shaped section, during which the glass edge is heated with the laser beam to a temperature above glass transition temperature, T>Tg. The method provides the creation of tempered glass sections of desired shape and size in the near-edge area due to the provision of thermal stresses in these areas, which cause the formation of a chamfer with rounded or blunt ends on the glass at brittle fracture.

Description

technical field [0001] The invention relates to a processing method for glass objects, in particular to a passivation method for sharp edges of glass objects. The present invention can be used in various industries involving glass processing of passivated edges. Background technique [0002] Conventional mechanical and chemical methods of processing glass edges can create microcracks in the glass sheet, especially at the glass edges, reducing the strength of the glass by an order of magnitude. [0003] An alternative machining method is laser chamfering. Laser light is characterized by a large coherence length of monochromatic light. Lasers are used in many industrial and medical applications. Important technical applications of lasers include, for example, spectroscopy, laser distance measurement, and lasers are also used for precision cutting and welding processes in metals, ceramics and glass. [0004] WO03015976A1 discloses a method of chamfering the edge of a glass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B33/09B23K26/04B23K26/354B23K26/36B23K26/38B23K26/402
CPCC03C23/0025B23K26/0006B23K26/0066B23K2203/50C03B29/00C03B33/082C03B29/025B23K26/352B23K26/3576B23K26/0734B23K2103/54
Inventor V·S·卡丁T·A·阿利耶夫
Owner 佩尔科姆杜布纳机械制造厂有限公司
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