Method for using base plate to control welding deformation
A technology of welding deformation and backing plate, which is applied in the field of butt welding of medium-thick plates to control welding deformation, can solve the problems of base metal damage, labor and time-consuming, increase construction cost, etc., achieve convenient operation, reduce post-weld adjustment, and good economic benefits Effect
Inactive Publication Date: 2017-10-24
BEIJING SHOUGANG CONSTR GROUP
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] In the butt welding of medium and heavy plates, traditional methods such as post-weld flame correction and mechanical correction are often used for post-weld welding deformation, which is labor-intensive and time-consuming, which not only increases construction costs, but also causes certain damage to the base metal
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach
[0013] Figure 1-Figure 4 It is a specific embodiment of the present invention. The specific implementation is as follows:
[0014] The first step is to conduct advanced welding experiments according to the actual thickness of the butt plate, and then select the size of the backing plate that matches the experiment: length (100-200mm)*width (width of the butt plate)*t (thickness of the backing plate), generally t= Within the range of 4 ~ 30mm;
[0015] The second step is to place the backing plate directly under the welding position of the butt plate, so that the angle of the butt plate is the same as that of the welding experiment;
[0016] In the third step, the welding seam of the butt plate is welded in layers, and the interlayer is cooled. Due to the welding stress, the position of the weld seam gradually shrinks, so that the butt plate is lifted upward;
[0017] In the fourth step, after the butt plate is welded, as the weld seam cools, due to the influence of welding...
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 using a base plate to control welding deformation, and belongs to the field of control over the welding deformation through butt-joint welding of medium-thick plates. The method comprises the steps of firstly conducting a welding experiment according to the thickness of an actual butt-joint plate, and then choosing a base plate of which the size is matched with the experiment, wherein the size is length*width*t, the length is 100-200mm, the width is the width of the butt-joint plate, and the thickness t is 4-30mm; putting the base plate under the welding position of the butt-joint plate, so that the angle of the butt-joint plate is identical to that of the welding experiment; conducting layering welding on the welding joint of the butt-joint plate, conducting interlaying cooling, and making the position of the welding joint gradually shrink, so that the butt-joint plate is lifted upwards. After the butt-joint plate is welded, as the welding joint cools down, the welding joint is finally shrunk to the angle which makes the butt-joint plate smooth. The method for using the base plate to control the welding deformation has the advantages that the base plate makes a reverse angle generated in the welding position, then stress in the welding process is utilized, so that the welding joint is shrunk, finally the reverse angle is offset, so that the butt-joint plate is flat after being welded, the adjustment after welding is reduced, the operation is convenient, and the cost in controlling the welding deformation is greatly reduced.
Description
technical field [0001] The invention belongs to the field of butt welding of medium and thick flat plates to control welding deformation, and in particular provides a method for controlling welding deformation by using a backing plate. Background technique [0002] In the butt welding of medium and thick plates, traditional methods such as post-weld flame correction and mechanical correction are often used for post-weld welding deformation, which is labor-intensive and time-consuming, which not only increases construction costs, but also causes certain damage to the base metal. After continuous discussion, combined with the actual experience on the spot, and after repeated tests, our unit has summarized and developed a new method of using backing plates to control welding deformation. The position of the welding seam forms a reverse angle. After the welding is completed, the weld seam cools and shrinks to offset the reverse angle of the weld seam in advance, so that the butt...
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
Login to View More IPC IPC(8): B23K9/035
CPCB23K9/035
Inventor 郭建平王伟林姜兆双
Owner BEIJING SHOUGANG CONSTR GROUP