CN108927588B - Method for welding junction of rib plates of positioning arm - Google Patents
Method for welding junction of rib plates of positioning arm Download PDFInfo
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- CN108927588B CN108927588B CN201810778655.XA CN201810778655A CN108927588B CN 108927588 B CN108927588 B CN 108927588B CN 201810778655 A CN201810778655 A CN 201810778655A CN 108927588 B CN108927588 B CN 108927588B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
Abstract
The invention discloses a method for welding the intersection of rib plates of a positioning arm, which comprises three plates which are vertically welded with each other, wherein the welding position of a first plate and a second plate is called a first corner seam, two adjacent surfaces of the second plate and a third plate form two welding positions which are called a second corner seam and a fourth corner seam, the welding position of the third plate and the first plate is called a third corner seam, and a first corner seam welding bead, a second corner seam welding bead and a third corner seam welding bead are intersected at one point, and the method comprises the following steps: step 1: assembling a first plate, a second plate and a third plate; step 2: welding a third angle joint welding bead; and step 3: and sequentially welding a fourth corner joint weld bead, a second corner joint weld bead and a first corner joint weld bead, and completing the welding by one-time welding by adopting a half-inverted V-shaped track welding method. According to the invention, the number of joints at the intersection is reduced from 3 to 1, so that the welding defects are reduced, the internal quality is obviously improved, and the phenomenon of no welding at the end socket due to thick arc starting points is avoided.
Description
Technical Field
The invention belongs to the technical field of steel structure welding, and particularly relates to a method for welding a rib plate junction of a positioning arm.
Background
The prior art is directed at welding of split type location arm gusset three-point junction of EMUs, and the sharp corner problem of plate connection structure is avoided to the location arm structure adoption welding seam build-up welding form, and the build-up welding volume is big. With the increase of welding quantity, the influence on the welding deformation of the structure is increased, the number of the intersection welding seams and the number of the end socket welding seams are increased by the rib plate structure, and the possibility of generating welding defects is also increased. The locating arm is the key spare part of bogie, and its welding is extremely high to inside permeability and inside quality requirement, and how to overcome the inside quality management and control risk that polylinker and a large amount of build-up welding brought is the technical problem who awaits a urgent need to solve.
Chinese patent application No. CN201510333252.0 discloses an overcut angle penetration welding method, wherein two welders are simultaneously matched to skillfully make the welding seam continuously pass through the corner cut, and simultaneously, an arc-closing button on a welding gun is skillfully used to convert the flat welding parameters into vertical welding parameters, thereby ensuring the continuity of each welding seam at the corner cut and ensuring the quality of the welding seam. The seal head of the scheme is an arc starting point of the welding line, so that the phenomenon of no welding can be easily caused due to thick arc starting points, and particularly, the welding lines on two sides are more obvious when multilayer welding is carried out.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a method for welding the intersection of the rib plates of the positioning arm, wherein 3 joints at the intersection are reduced to 1 joint, so that the welding defects are reduced, the internal quality is obviously improved, and the phenomenon that the end socket is not welded due to thick arc starting points is avoided.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for welding the junction of rib plates of locating arm includes such steps as welding three plates perpendicular to each other, welding the first plate to the second plate to form the first corner seam, welding the second plate to the third plate to form the second corner seam and the fourth corner seam, welding the third plate to the first plate to form the third corner seam, and welding the first corner seam bead, the second corner seam bead and the third corner seam bead to join at one point:
step 1: assembling a first plate, a second plate and a third plate;
step 2: welding a third angle joint welding bead;
and step 3: and sequentially welding a fourth corner joint weld bead, a second corner joint weld bead and a first corner joint weld bead, and completing the welding by one-time welding by adopting a half-inverted V-shaped track welding method.
Further, in step 1, assembling the first plate, the second plate, and the third plate includes: and splicing the first plate and the second plate, backing welding the first corner joint bead, assembling the third plate, and backing welding the second corner joint bead.
Furthermore, the welding direction of the backing welding second angle joint bead is from top to bottom.
Further, in step 2, welding the third seaming pass includes: and (4) welding the third angle joint bead at a flat fillet welding position.
Further, in the step 2, a third angle seam welding bead is welded, and an arc starting point is formed at the intersection of the first angle seam welding bead, the second angle seam welding bead and the third angle seam welding bead;
preferably, the third seaming pass is a multi-layer, multi-pass weld.
Further, in step 3, the half-inverted V-shaped track welding method comprises the following steps: taking the middle part of a fourth corner joint welding bead in the thickness direction of the top of the third plate as an arc starting point, and welding the fourth corner joint welding bead, a second corner joint welding bead and a first corner joint welding bead in sequence at one time;
preferably, the arc starting point is the middle point of a fourth corner seam welding bead in the thickness direction of the top of the third plate.
Further, in step 3, the first corner joint bead, the second corner joint bead and the fourth corner joint bead are finished by one-time welding, and the corner is turned at a right angle at the intersection without arc stopping and joint;
preferably, the first fillet weld bead and the second fillet weld bead are welded in a flat fillet position.
Furthermore, the fourth corner joint bead, the first corner joint bead and the second corner joint bead are multi-layer multi-pass welding;
preferably, each layer is welded according to a half-inverted V-shaped track welding method.
Further, the reverse surfaces of the first corner joint, the second corner joint and the third corner joint are welded again.
Furthermore, the first plate is a lower cover plate of the positioning arm, the second plate is a base plate of the positioning arm, and the third plate is a rib plate.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
1. Reduce the joint of junction to 1 by 3, reduced welding defect's production, inside quality is showing and is promoting.
2. The phenomenon that the seal head is not welded due to thick arc starting points is avoided.
3. The method has low operation difficulty, is easy to solidify, and is convenient for operators to go on duty through simple training.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a welding method for a positioning arm rib plate junction according to the present invention;
FIG. 2 is a schematic view of the welding process of the present invention in a reversed V shape.
In the figure: 1. a positioning arm lower cover plate; 2. a positioning arm base plate; 3. a rib plate; 4. a midpoint; 5. a first fillet weld bead; 6. a second corner weld bead; 7. a third corner seaming pass.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 2, the method for welding the intersection of rib plates of positioning arms comprises three plates which are welded perpendicularly to each other, wherein the welding position of a first plate and a second plate is called a first corner seam, two adjacent surfaces of the second plate and a third plate form two welding positions, called a second corner seam and a fourth corner seam, the welding position of the third plate and the first plate is called a third corner seam, and a first corner seam welding bead 5, a second corner seam welding bead 6 and a third corner seam welding bead 7 are converged at one point, and the method comprises the following steps:
step 1: assembling a first plate, a second plate and a third plate;
step 2: welding a third corner weld bead 7;
and step 3: and sequentially welding a fourth corner joint bead, a second corner joint bead 6 and a first corner joint bead 5, and completing the welding by one-time welding by adopting a half-inverted V-shaped track welding method.
Specifically, in step 1, assembling the first plate, the second plate, and the third plate includes: and (3) splicing the first plate and the second plate, backing-welding the first corner joint bead 5, assembling the third plate, and backing-welding the second corner joint bead 6. First, the first plate and the second plate are joined, the first fillet weld position is adjusted to the flat fillet weld position by the welding positioner, and the first fillet weld bead 5 is back-welded. And then assembling the third plate, backing welding the second corner joint bead 6, wherein the welding direction of backing welding the second corner joint bead 6 is from top to bottom.
In step 2, welding the third corner seaming bead 7 comprises: the third corner seaming bead 7 is welded in the flat fillet welding position.
In step 2, the third corner weld bead 7 is welded, and the intersection of the first corner weld bead 5, the second corner weld bead 6 and the third corner weld bead 7 is an arc starting point. Preferably, the third seaming pass 7 is a multi-layer, multi-pass weld. Until the third plate and the first plate groove are filled.
After the third corner joint bead 7 is welded, the first corner joint and the second corner joint are adjusted to the flat corner welding position by using the welding positioner.
In step 3, the half-inverted V-shaped track welding method comprises the following steps: and (3) taking the middle part of the fourth corner joint bead in the thickness direction of the top of the third plate as an arc starting point, and welding the fourth corner joint bead, the second corner joint bead 6 and the first corner joint bead 5 in sequence at one time. Preferably, the arc starting point is the middle point 4 of the fourth corner seaming bead in the thickness direction of the top of the third plate.
In step 3, the first corner joint bead 5, the second corner joint bead 6 and the fourth corner joint bead are finished by one-time welding, and the corner is turned at a right angle at the intersection without arc stopping and joint. Preferably, the first and second corner beads 5, 6 are welded in a flat fillet position. The fourth corner bead, the first corner bead 5 and the second corner bead 6 are multi-layer multi-pass welds. Preferably, each layer is welded by a half-herringbone welding method. The method is adopted to carry out surfacing welding until the welding is finished. The method reduces the number of joints at the intersection from 3 to 1, reduces the generation of welding defects, and obviously improves the internal quality. The phenomenon that the seal head is not welded due to thick arc starting points is avoided.
And after the front welding is finished, welding the reverse sides of the first corner joint, the second corner joint and the third corner joint again according to the method. Further, one layer can be welded on the front surface, one layer can be welded on the back surface, and the front surface and the back surface are welded back and forth until the welding is finished, or the back surface is welded until the welding is finished after the welding on the front surface is finished.
Example one
As shown in fig. 1 to fig. 2, in the welding method for the intersection of rib plates of the positioning arm according to this embodiment, the first plate is a lower cover plate 1 of the positioning arm, the second plate is a base plate 2 of the positioning arm, and the third plate is a rib plate 3.
And assembling the lower positioning arm cover plate 1, the positioning arm seat plate 2 and the rib plate 3 according to the method. And backing welding the first corner seaming bead 5 and the second corner seaming bead 6, and then welding the third corner seaming bead 7 until the third corner seaming bead 7 is welded, wherein the middle part of the fourth corner seaming bead in the thickness direction of the rib plate 3 is used as an arc starting point, and preferably, the arc starting point is the middle point 4 of the fourth corner seaming bead in the thickness direction of the top of the third plate. After the arc starts, the arc is transited to a second corner joint welding bead 6 through the top of a third plate in sequence and then to a first corner joint welding bead 5, the arc is welded at one time, a right-angle turn is carried out at the intersection, and no joint exists during the arc stopping process.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. A method for welding the junction of rib plates of positioning arm includes three plates which are welded perpendicularly to each other, the welding position of a first plate and a second plate is called a first corner seam, two adjacent surfaces of the second plate and a third plate form two welding positions which are called a second corner seam and a fourth corner seam, the welding position of the third plate and the first plate is called a third corner seam, and a first corner seam welding bead, a second corner seam welding bead and a third corner seam welding bead are intersected at one point, which is characterized by including the following steps:
step 1: assembling a first plate, a second plate and a third plate;
step 2: welding a third angle joint welding bead;
and step 3: and adopting a half-inverted V-shaped track welding method, and sequentially welding a fourth corner joint welding bead, a second corner joint welding bead and a first corner joint welding bead at one time by taking the middle part of the fourth corner joint welding bead in the thickness direction of the top of the third plate as an arc starting point.
2. The method for welding the intersection of webs of a positioning arm according to claim 1, comprising: in step 1, assembling the first plate, the second plate, and the third plate includes: and splicing the first plate and the second plate, backing welding the first corner joint bead, assembling the third plate, and backing welding the second corner joint bead.
3. The method for welding the intersection of webs of a positioning arm according to claim 2, wherein: the welding direction of the backing weld second angle joint bead is from top to bottom.
4. The method for welding the intersection of webs of a positioning arm according to claim 1, comprising: in step 2, welding the third corner seaming pass comprises: and (4) welding the third angle joint bead at a flat fillet welding position.
5. The method for welding the intersection of webs of a positioning arm according to claim 1, comprising: and in the step 2, welding a third angle joint welding bead, wherein the intersection of the first angle joint welding bead, the second angle joint welding bead and the third angle joint welding bead is an arc starting point.
6. The method for welding the intersection of webs of a positioning arm according to claim 5, wherein: the third corner seam welding bead is multilayer multi-pass welding.
7. The method for welding the intersection of webs of a positioning arm according to claim 1, comprising: in step 3, the arcing point is the middle point of the fourth corner seaming bead in the thickness direction of the top of the third plate.
8. The method for welding the intersection of webs of a positioning arm according to claim 5, wherein: in step 3, the first corner joint bead, the second corner joint bead and the fourth corner joint bead are completed through one-time welding, and the corner is turned at a right angle at the intersection without arc stopping and joint.
9. The method for welding the intersection of webs of a positioning arm according to claim 8, wherein: the first corner weld bead and the second corner weld bead are welded in a flat corner welding position.
10. The method for welding the intersection of webs of a positioning arm according to claim 8, wherein: the fourth corner weld bead, the first corner weld bead and the second corner weld bead are multi-layer multi-pass welds.
11. The method for welding the intersection of webs of a positioning arm according to claim 10, wherein: each layer is welded according to a half-inverted V-shaped track welding method.
12. The method for welding the intersection of webs of a positioning arm according to claim 1, comprising: the reverse side of the first corner seam, the second corner seam and the third corner seam is welded again.
13. The method of welding a web intersection of locator arms according to any of claims 1-12, wherein: the first plate is a lower cover plate of the positioning arm, the second plate is a base plate of the positioning arm, and the third plate is a rib plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810778655.XA CN108927588B (en) | 2018-07-16 | 2018-07-16 | Method for welding junction of rib plates of positioning arm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810778655.XA CN108927588B (en) | 2018-07-16 | 2018-07-16 | Method for welding junction of rib plates of positioning arm |
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| CN108927588A CN108927588A (en) | 2018-12-04 |
| CN108927588B true CN108927588B (en) | 2020-09-01 |
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| CN110666294B (en) * | 2019-10-24 | 2021-07-13 | 青岛磊金德冲压件有限公司 | Welding method for complex cross structure of weather-resistant steel sleeper beam of railway passenger car |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2315733C3 (en) * | 1973-03-27 | 1981-06-25 | Sumitomo Heavy Industries, Ltd., Tokyo | Method and device for fillet weld welding |
| JPS51145442A (en) * | 1975-03-18 | 1976-12-14 | Sumitomo Metal Ind | Method of corner welding |
| JPH06182543A (en) * | 1992-12-18 | 1994-07-05 | Ishikawajima Harima Heavy Ind Co Ltd | Welding method for fillet welding intersection part |
| CN102500881B (en) * | 2011-11-21 | 2014-01-08 | 北京新风机械厂 | Thin-wall aluminum alloy three-plate butting one-time fusion welding process method |
| CN104985285B (en) * | 2015-06-15 | 2018-09-21 | 沪东中华造船(集团)有限公司 | It is a kind of to cross corner cut penetration welding method |
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