A Method of Controlling the Root Gap and Warpage of Welding Joints on One Side of Thin Plate
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 technology of root gap and joint root, which is applied in the field of single-face welding of thin plates, can solve the problems affecting the quality of the weld seam and the welding process, warping deformation, poor flexibility, etc., and achieves a significant effect of misalignment control, free separation, and positioning The effect of flexible and accurate spacing
Inactive Publication Date: 2015-10-07
GUANGDONG PROVINCIAL INST OF WELDING TECH GUANGDONG PROVINCIAL ACADEMY OF UKRAINE
View PDF6 Cites 0 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
[0008] The object of the present invention is to address the above-mentioned problems and deficiencies, and to provide a single-side control sheet that can solve the problems of poor flexibility in the existing thin-plate butt welding root gap and warping deformation control methods and problems that affect the quality of the weld seam and the welding process. Method of Butt Welding Joint Root Gap and Warping Deformation
[0011] A. According to the thickness of the thin plate, the form of the groove, and the size required by the root gap process, a certain distance in front of the welding torch can be installed to solve the problem that the root gap of the thin plate is getting smaller and out-of-plane due to the lateral shrinkage in front of the molten pool during the welding process. The problem of warping and deformation ensures that the welding process can be carried out smoothly. The width of the circular convex part of the circular convex roller is the same as the width of the joint root gap of the thin plate;
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
Embodiment 1
[0055] The method of dynamically controlling the root gap and warping deformation of the single-face welding joint of the thin plate with welding includes: the thickness of the aluminum alloy thin plate is δ=3mm, according to the δ≤4mm in Table 1, the I-shaped groove welding is adopted, see Figure 9 , the root gap is 1.5mm;
[0056] Make a circular convex roller 2 that controls the root gap with welding positioning. The section of the circular convex part 21 is an I-shaped structure, the convex height is 4mm (including the circular top), and the 1mm exceeding the plate thickness In the forming groove 51 of the backing plate 5 under the thin plate;
[0057] Assemble the circular convex roller 2, TIG welding torch (with filler wire), and extrusion wheel 3 in sequence, and place the device on the aluminum alloy sheet to be welded. Automated TIG wire-filled welding, due to the circular forming groove below, successfully completes the TIG welding of single-sided welding and doubl...
Embodiment 2
[0059] The method of dynamically controlling the root gap and warping deformation of the single-face welding joint of the thin plate with welding includes: the thickness of the aluminum alloy thin plate is δ=5mm, according to the δ>4mm in Table 1, the V-shaped groove welding is adopted, see Figure 11 , the groove angle is 65°, the blunt edge height at the root is 2mm, and the groove gap is 2.5mm;
[0060] Make a circular convex roller 2 that controls the root gap with welding positioning, the section of the circular convex part 21 of the circular convex roller 2 is an inverted Y-shaped structure, and the total height of the convex is 6.5mm (including the circular top) , the 1.5mm exceeding the plate thickness δ is located in the forming groove 51 of the backing plate 5 under the aluminum alloy sheet;
[0061] Assemble the circular convex roller 2, TIG welding torch (with filler wire), extrusion wheel 3, and extrusion force device 7 in sequence, place the device on the aluminu...
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
Login to view more
Abstract
The invention discloses a method for controlling root gaps and buckling deformation of single-side butt-welded joints of sheets. The method includes steps of firstly, mounting a circular convex roller at the front of a welding gun according to the thickness of a sheet, groove types and the sizes, which are required by a process, of root gaps; secondly, mounting a squeezing wheel with a groove at the rear of the welding gun according to the sizes, which are required by a height strengthening process, of welded joints; thirdly, connecting the circular convex roller with the squeezing wheel by a support and mounting a squeezing force device on the support. The method has the advantages that dynamic welding dynamic positioning and constraining effects can be realized, the positioning distance is accurate, buckling deformation of the flat sheets can be flexibly controlled, an obvious flat sheet buckling deformation control effect can be realized, point fixing and removing operation on point contact, surface contact, positioning plug blocks and the like can be omitted, automatic welding procedures can be assuredly smoothly carried out, the method is free of extract constraints on the distances of the positioning plug blocks and various sections, seams can be freely expanded and contracted in the surfaces of the sheets in heating and cooling procedures, residual stress due to the extra constraints on the distances of the positioning plug blocks or various sections can be removed, and deformation due to the extra constraints on the distances of the positioning plug blocks or various sections can be prevented.
Description
technical field [0001] The invention relates to a thin plate single-face welding process method, in particular to a method for dynamically controlling the root gap and warping deformation of a single-face welded joint of a thin plate along with welding. Background technique [0002] Aluminum and titanium alloys have the advantages of high specific strength, high specific stiffness, light weight, and corrosion resistance, and are widely used in aerospace, marine weaponry and other fields. At the same time, due to its special physical and chemical properties, such as low density, small specific heat, and large thermal expansion coefficient, large internal stress will be generated in the weld seam and near seam area in flat tailor welding, of which the transverse internal stress and transverse shrinkage , will cause the root spacing of the welded plate to decrease continuously, and eventually the spacing will disappear. This will lead to uneven filling of the weld metal and le...
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 
Login to view more