Bottoming welding method of laser-hot wire MIG composite based on light beam scanning
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A welding method and beam scanning technology, which is applied in the field of laser-hot wire MIG composite backing welding, can solve the problem that the back of the liquid metal weld is easy to form concaves, etc.
Inactive Publication Date: 2018-12-11
HARBIN IRT INTELLIGENT ROBOT TECH CO LTD
View PDF7 Cites 9 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0012] The purpose of the present invention is to solve the problem that the back of the liquid metal weld is easy to form concave during the ex
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach 1
[0019] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment mode, a laser-hot wire MIG composite bottoming welding method based on beam scanning described in this embodiment, the bottoming welding method includes: a laser beam scanned along a certain trajectory and a hot wire protected by an inert gas MIG arc combination is used for backing welding. The laser beam and arc act in a welding pool. By reasonably matching the power of the laser beam, scanning frequency, and laser swing, it can stir the welding pool to a certain extent and change the welding pool. The stressed state of the pool, thus completing the root welding of the workpiece to be welded.
[0020] In this embodiment, the laser beam scanning technology is used to stir the welding pool of the workpiece to be welded, changing the hand state of the welding pool and reducing the resistance of the liquid metal to the root of the groove , improve the forming effect of the back of t...
specific Embodiment approach 2
[0021] Specific embodiment 2: This embodiment is a laser-hot wire MIG composite bottoming welding method based on beam scanning described in specific embodiment 1. In this embodiment, the laser beam and the MIG arc are compounded. For: paraxial compound mode;
[0022] The paraxial composite method is specifically: the laser beam is in front, the MIG arc is behind, the inclination angle of the laser beam is controlled between 80° and 90°, the inclination angle of the MIG arc welding torch is controlled between 55° and 65°, and the light The wire pitch is 0mm to 8mm.
specific Embodiment approach 3
[0023] Specific embodiment three: This embodiment is a laser-hot wire MIG composite welding method based on beam scanning described in specific embodiment one. In this embodiment, the shape of the scanning trajectory of the laser beam is circular, One of elliptical, S-shaped or zigzag, the scanning frequency F of the laser beam is greater than or equal to 100HZ, and the scanning width B of the laser beam is in the range of 2mm-5mm.
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
Property
Measurement
Unit
Defocus amount
aaaaa
aaaaa
Login to view more
Abstract
The invention provides a bottoming welding method of laser-hot wire MIG composite based on light beam scanning, relates to the field of laser-hot wire MIG composite welding, and solves the problem that liquid metal welding joint back surface is prone to forming an indent when an existing laser-hot wire MIG welding performs bottoming welding. Bottoming welding is carried out on laser beam and hot wire MIG electric arc composite, wherein the laser beam scans along a certain track, and the hot wire MIG electric arc composite is protected by insert gas. The laser beam and the electric arc act in awelding pool, the power, scanning frequency and laser swing of the laser beam are matched reasonably to achieve a certain stirring action for the welding pool, the stress state of the welding pool ischanged, and the bottoming welding of welded workpieces is completed. The bottoming welding method of the laser-hot wire MIG composite based on the light beam scanning has the beneficial effects thatthe stirring action is achieved for the laser scanning, the stress state of the welding pool is changed, the resistance of the liquid metal flowing to a groove root portion is reduced, the forming effect of the welding joint back surface is improved, and the forming of the welding joint back surface is quite attractive and the spread-ability of the welding joint is good.
Description
technical field [0001] The invention relates to a laser-hot wire MIG composite backing welding technology. Background technique [0002] Because TIG welding is protected by pure Ar, the welding process is stable, the weld shape is beautiful, the weld metal is clean, and the metallurgical performance of the welded joint is high. For TIG root welding, in order to ensure the penetration and back forming of the weld root, the following two methods are mainly used: [0003] (1) Larger groove angle (60°-70°), resulting in low welding efficiency, large consumption of welding materials, large welding heat input, and easily lead to large welding deformation; [0004] (2) A certain gap needs to be left at the root of the groove. The uneven size of the gap will directly affect the penetration of the root of the weld and the formation of the back. ; [0005] Therefore, with the rapid development of my country's aviation, aerospace, nuclear power and other fields, TIG welding methods ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more