CN111571070A - Welding method of I-shaped workpiece - Google Patents
Welding method of I-shaped workpiece Download PDFInfo
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- CN111571070A CN111571070A CN202010380793.XA CN202010380793A CN111571070A CN 111571070 A CN111571070 A CN 111571070A CN 202010380793 A CN202010380793 A CN 202010380793A CN 111571070 A CN111571070 A CN 111571070A
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- welding
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- shaped
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K9/18—Submerged-arc welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding method of an I-shaped workpiece, which comprises the following steps: determining a key welding edge of the I-shaped workpiece, and arranging an inspection line on the key welding edge; determining a workpiece deformation quantity threshold value of the I-shaped workpiece; welding one welding seam of the I-shaped workpiece, and measuring the deformation quantity of the I-shaped workpiece during welding based on the inspection line in the welding process; when the deformation amount of the I-shaped workpiece during welding is equal to the deformation amount threshold value of the workpiece, stopping welding and carrying out welding of the next welding line; and (4) repeating the step (3) until all welding seams are welded, so that the deformation of the I-shaped workpiece during welding is in a controllable range, a foundation can be laid for subsequent processing, and the cost is obviously reduced.
Description
Technical Field
The invention relates to the technical field of welding of I-shaped workpieces, in particular to a welding method of an I-shaped workpiece.
Background
Workpieces are often deformed during welding, and in order to avoid the influence of the deformation of the workpieces during welding, the workpieces are often straightened by flame heating or machinery and the like after the workpieces are welded, but the thickness, the size and the weight of a steel plate of an I-shaped workpiece are large, so that the I-shaped workpiece cannot be straightened by a conventional method, and therefore, the urgent need exists for providing a welding method for the I-shaped workpiece
Disclosure of Invention
The invention aims to provide a method for welding an I-shaped workpiece, which can strictly control the welding deformation of the I-shaped workpiece, lay a foundation for subsequent processing and obviously reduce the cost.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention specifically comprises the following steps:
a method of welding an i-shaped workpiece, the method comprising:
(1) determining a key welding edge of the I-shaped workpiece, and arranging an inspection line on the key welding edge;
(2) determining a workpiece deformation quantity threshold value of the I-shaped workpiece;
(3) welding one welding seam of the I-shaped workpiece, and measuring the deformation quantity of the I-shaped workpiece during welding based on the inspection line in the welding process; when the deformation amount of the I-shaped workpiece during welding is equal to the deformation amount threshold value of the workpiece, stopping welding and carrying out welding of the next welding line;
(4) and (4) repeating the step (3) until all welding seams are welded.
Preferably, the i-shaped workpiece includes a first workpiece, a second workpiece and a third workpiece, and two ends of the second workpiece are respectively connected with the first workpiece and the third workpiece, and the first workpiece and the third workpiece are parallel to each other.
Preferably, the deformation amount of the i-shaped workpiece during welding is a difference between a distance between the first workpiece and the third workpiece and a length of the second workpiece.
Preferably, when the two right-angled sides of the angle square abut against the third workpiece and the second workpiece respectively, the deformation amount of the I-shaped workpiece during welding is the maximum value of the width of a gap between the right-angled side of the angle square abutting against the third workpiece and the top of the third workpiece.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a welding method of an I-shaped workpiece, which comprises the following steps: determining a key welding edge of the I-shaped workpiece, and arranging an inspection line on the key welding edge; determining a workpiece deformation quantity threshold value of the I-shaped workpiece; welding one welding seam of the I-shaped workpiece, and measuring the deformation quantity of the I-shaped workpiece during welding based on the inspection line in the welding process; when the deformation amount of the I-shaped workpiece during welding is equal to the deformation amount threshold value of the workpiece, stopping welding and carrying out welding of the next welding line; and (4) repeating the step (3) until all welding seams are welded, so that the deformation of the I-shaped workpiece during welding is in a controllable range, a foundation can be laid for subsequent processing, and the cost is obviously reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of an I-shaped workpiece according to the present invention;
FIG. 2 is a schematic view of a measuring tape used for measuring the deformation of the I-shaped workpiece during welding;
FIG. 3 is a schematic structural diagram of measuring the deformation amount of the I-shaped workpiece during welding by using an angle ruler;
wherein the reference numerals in fig. 1-3 are:
1. a first workpiece; 2. a second workpiece; 3. a third workpiece; 4. welding seams; 5. inspecting the line; 6. an angle square.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
the invention discloses a welding method of an I-shaped workpiece, which comprises the following steps:
(1) determining a key welding edge of the I-shaped workpiece, and arranging an inspection line 5 on the key welding edge;
(2) and determining a workpiece deformation quantity threshold of the I-shaped workpiece, wherein the difference between the workpiece deformation quantity threshold and the convex-concave bending is not more than 10mm when the I-shaped workpiece is set specifically.
(3) Welding one welding seam of the I-shaped workpiece, and measuring the deformation quantity of the I-shaped workpiece during welding based on the inspection line 5 in the welding process; when the deformation amount of the I-shaped workpiece during welding is equal to the deformation amount threshold value of the workpiece, stopping welding and carrying out welding of the next welding line;
(4) and (4) repeating the step (3) until all welding seams are welded.
As shown in fig. 1 to 3, the i-shaped workpiece includes a first workpiece 1, a second workpiece 2, and a third workpiece 3, and both ends of the second workpiece 2 are connected to the first workpiece 1 and the third workpiece 3, respectively, and the first workpiece 1 and the third workpiece 3 are parallel to each other, so that the i-shaped workpiece includes four welding seams.
In the invention, the purpose of determining the key welding edge is to check the convex-concave deformation amount by using a steel wire and a spring tensioning tool according to an end surface datum line, and the method comprises the following specific steps: (1) before the workpiece is point-mounted, the panel is not flat, and is mechanically leveled; (2) machining the vertical plate in the height direction until the vertical plate meets the size requirement, and machining a welding groove; (3) before submerged arc welding construction, an angle ruler is used for checking, edges of 90 degrees are selected as datum mark plate surfaces, and the two sides of the plate surfaces are marked by poplar punch. The two ends of the steel wire are assisted by a steel wire and spring tensioning tool, the steel wire is tensioned by the force of 100 newtons, the steel wire is ensured not to be wound, and the convex-concave deformation is checked; (4) and then, selecting a welding position (a, welding from the middle to two ends, and welding from the head section to the tail end) from the convex-concave direction, and changing the welding deformation direction. .
As a preferable mode of the above aspect, the amount of deformation when the i-shaped workpiece is welded is a difference between the distance between the first workpiece 1 and the third workpiece 3 and the length of the second workpiece 2, specifically, as shown in fig. 2, when the distance between the first workpiece 1 and the third workpiece 3 is measured by a tape measure and is denoted by L, and then the length of the second workpiece 2 is measured and is denoted by L0, a difference Δ L between L and L0 is the amount of deformation when the i-shaped workpiece is welded.
Or, in other embodiments, the deformation amount of the i-shaped workpiece during welding is the maximum value of the width of the gap between the right-angled side of the square 6 and the top of the third workpiece 3 when the two right-angled sides of the square 6 abut against the third workpiece 3 and the second workpiece 2, respectively, specifically, as shown in fig. 3, the two right-angled sides of the square 6 abut against the third workpiece 3 and the second workpiece 2, respectively, and then the maximum value of the width of the gap between the right-angled side of the third workpiece 3 and the top of the third workpiece 3 is measured and is denoted as b, i.e., the deformation amount of the i-shaped workpiece during welding.
Specifically, as shown in fig. 1, the welding seams 4 are numbered according to the first two and the fourth two, the welding seams are firstly bottomed by submerged arc welding, and each welding seam 4 is bottomed by two layers, so that the welding quality of the I-shaped workpiece is controlled, the welding seams are deeper in penetration depth and have no defects of air holes, slag inclusion and the like, and the two layers of bottomed welding can not only facilitate the detection of a measuring tool to preliminarily determine the deformation amount, but also avoid the tearing of the opposite side positioning welding seams, thereby causing quality defects.
When the first welding seam 4 is welded, when the deformation quantity delta L or b of the I-shaped workpiece during welding is equal to the deformation quantity threshold value, the I-shaped workpiece is immediately turned over to jump to the second opposite-angle welding seam 4 for welding, and the deformation quantity of the workpiece is controlled to be a in the same way. Then, the third welding line 4 is welded, and the amount of deformation of the workpiece is controlled to 2a (for the purpose of compensating the amount of deformation a of the workpiece at the time of welding the first welding line 4). Then, the fourth welding seam 4 is welded, and the workpiece deformation amount is controlled to 2a (the workpiece deformation amount a during welding of the third welding seam 4 is compensated). And performing multiple cycles in this way, controlling the deformation of the workpiece of the subsequent weld joint 4 to be 2a, when the groove is filled with 3/4, ensuring that the total deformation of the workpiece does not exceed a set value a, finally connecting the 1/4 groove with a crevasse and a flat panel, and correcting the deformation of the I-shaped workpiece.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (4)
1. A method of welding an i-shaped workpiece, the method comprising:
(1) determining a key welding edge of the I-shaped workpiece, and arranging an inspection line on the key welding edge;
(2) determining a workpiece deformation quantity threshold value of the I-shaped workpiece;
(3) welding one welding seam of the I-shaped workpiece, and measuring the deformation quantity of the I-shaped workpiece during welding based on the inspection line in the welding process; when the deformation amount of the I-shaped workpiece during welding is equal to the deformation amount threshold value of the workpiece, stopping welding and carrying out welding of the next welding line;
(4) and (4) repeating the step (3) until all welding seams are welded.
2. The welding method according to claim 1, wherein the i-shaped workpieces include a first workpiece, a second workpiece, and a third workpiece, and both ends of the second workpiece are connected to the first workpiece and the third workpiece, respectively, and the first workpiece and the third workpiece are parallel to each other.
3. The welding method according to claim 2, wherein the amount of deformation when the i-shaped workpieces are welded is a difference between a distance between the first workpiece and the third workpiece and a length of the second workpiece.
4. The welding method of claim 4, characterized in that the deformation of the I-shaped workpiece during welding is the maximum value of the width of the gap between the square next to the third workpiece and the top of the third workpiece when the two square edges of the square next to the third workpiece and the second workpiece, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380793.XA CN111571070A (en) | 2020-05-08 | 2020-05-08 | Welding method of I-shaped workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380793.XA CN111571070A (en) | 2020-05-08 | 2020-05-08 | Welding method of I-shaped workpiece |
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| CN111571070A true CN111571070A (en) | 2020-08-25 |
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| CN202010380793.XA Pending CN111571070A (en) | 2020-05-08 | 2020-05-08 | Welding method of I-shaped workpiece |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091226A (en) * | 1999-09-24 | 2001-04-06 | Kawasaki Steel Corp | Dimension measuring method for shape steel while running |
| CN101108443A (en) * | 2006-07-18 | 2008-01-23 | 中信重型机械公司 | Installing and soldering technique of inlet, outlet slip ring of large-scale sliding crawler mill barrel |
| CN201527245U (en) * | 2009-11-07 | 2010-07-14 | 焦安杰 | Measuring tool specialized for measuring inclination of steel section flange |
| CN102962593A (en) * | 2012-10-26 | 2013-03-13 | 福建省马尾造船股份有限公司 | Welding process of group establishment stage intervention interchangeable part |
| CN104550325A (en) * | 2015-01-07 | 2015-04-29 | 宁波亚洲浆纸业有限公司 | Correcting device and correcting method thereof |
| CN105057902A (en) * | 2015-08-04 | 2015-11-18 | 武船重型工程股份有限公司 | Super-thick plate splicing method and lifting appliance |
| CN105081595A (en) * | 2015-02-04 | 2015-11-25 | 上海船舶工艺研究所 | Fillet weld welding structure for K-type grooves of moderately-thick plate without back chipping and welding technology of fillet weld welding structure |
-
2020
- 2020-05-08 CN CN202010380793.XA patent/CN111571070A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091226A (en) * | 1999-09-24 | 2001-04-06 | Kawasaki Steel Corp | Dimension measuring method for shape steel while running |
| CN101108443A (en) * | 2006-07-18 | 2008-01-23 | 中信重型机械公司 | Installing and soldering technique of inlet, outlet slip ring of large-scale sliding crawler mill barrel |
| CN201527245U (en) * | 2009-11-07 | 2010-07-14 | 焦安杰 | Measuring tool specialized for measuring inclination of steel section flange |
| CN102962593A (en) * | 2012-10-26 | 2013-03-13 | 福建省马尾造船股份有限公司 | Welding process of group establishment stage intervention interchangeable part |
| CN104550325A (en) * | 2015-01-07 | 2015-04-29 | 宁波亚洲浆纸业有限公司 | Correcting device and correcting method thereof |
| CN105081595A (en) * | 2015-02-04 | 2015-11-25 | 上海船舶工艺研究所 | Fillet weld welding structure for K-type grooves of moderately-thick plate without back chipping and welding technology of fillet weld welding structure |
| CN105057902A (en) * | 2015-08-04 | 2015-11-18 | 武船重型工程股份有限公司 | Super-thick plate splicing method and lifting appliance |
Non-Patent Citations (2)
| Title |
|---|
| 张明爽: "《钢结构实用材料手册》", 31 October 2007, 山西科学技术出版社 * |
| 陈莛等: "《金工实训》", 31 August 2016, 重庆大学出版社 * |
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Application publication date: 20200825 |