Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for laser welding using a nozzle capable of stabilising the keyhole

A technology of laser welding and nozzles, which is applied in the direction of laser welding equipment, combustion methods, welding equipment, etc.

Inactive Publication Date: 2010-12-08
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many welded structures that cannot be welded using laser welding using these flow types, e.g. welding stacks formed of multiple metal sheets with zinc coating or similar with zero gaps between them

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for laser welding using a nozzle capable of stabilising the keyhole
  • Method for laser welding using a nozzle capable of stabilising the keyhole
  • Method for laser welding using a nozzle capable of stabilising the keyhole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The invention can be better understood from the following description, given by way of example with reference to the accompanying drawings. The invention relates to a laser nozzle with a body 1 of "semi-axial" design, the body 1 having a An axial channel 2 of the beam and a plurality of gas injection passages 3 equidistant from said axial channel 2. The collision points of the various gas jets distributed via said gas channel 3 are oriented very close to the area of ​​interaction with the laser beam.

[0034] In other words, the laser nozzle used in the method of the invention is formed by a nozzle body 1 having an axis X-X, which body 1 has an upper surface 6, a lower surface 7 and a peripheral wall 5 of substantially conical form, which Extends between said upper surface 6 and lower surface 7 .

[0035] Such as Figure 1a with 1b As shown, the axial opening 2 extends between the upper surface 6 and the lower surface 7 of the nozzle body 1 . This opening is provided...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for welding with a laser beam, using a welding nozzle comprising: a nozzle body (1) having an axis and including at least an upper surface (6), a lower surface (7) and a peripheral wall (5); an axial cavity (2) extending between the upper (6) and lower (7) surfaces of the nozzle body (1) so as to define an outer channel (2) recessed from the surface of said peripheral wall (5); and a plurality of inner passages (3) drilled through the nozzle body (1) between the upper and lower surfaces (6, 7). The laser welding method of the invention provides a dynamic gas jet mechanically interacting with the molten metal bath, and further enables better control of the bath hydrodynamic flows, and thus better laser-welding efficiency.

Description

technical field [0001] The present invention relates to a laser welding method using a nozzle designed, adapted and formed for laser beam welding, the nozzle simply referred to as a "laser nozzle", which has a special form that when used in a laser beam welding method In the case of the nozzle, the special form allows better control of the hydrodynamic properties of the liquid metal bath through which the laser beam passes on the one hand and the gas passes on the other. Background technique [0002] Laser beam welding is a well-known method that is widely used industrially to assemble various materials such as carbon steel, stainless steel, aluminum and light alloys, among others. [0003] Briefly, to implement a laser welding method, a laser source or a laser generator is used to generate a laser beam, which is transmitted to one or more parts to be welded through an optical fiber or other optical devices such as mirrors and lenses. The energy of the beam makes it possibl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/14B23K26/16B23K26/32F23D14/54F23D14/58
CPCB23K2201/34B23K26/147B23K26/1447B23K26/3206B23K26/3293B23K26/32B23K26/1437B23K2101/34B23K2103/08B23K2103/50
Inventor K·舒弗P·勒菲弗
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE