CN107900544B - Welding method for cross-shaped welding line without forming welding hole - Google Patents
Welding method for cross-shaped welding line without forming welding hole Download PDFInfo
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- CN107900544B CN107900544B CN201711079444.9A CN201711079444A CN107900544B CN 107900544 B CN107900544 B CN 107900544B CN 201711079444 A CN201711079444 A CN 201711079444A CN 107900544 B CN107900544 B CN 107900544B
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- welding
- butt
- welding seam
- forming
- web plate
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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
- 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
- B23K31/022—Making profiled bars with soldered or welded seams
Abstract
A welding method for a cross-shaped welding seam without forming a welding hole comprises the following steps: supporting the flange plate to a certain height at the crossed part of the butt weld of the flange plate and the web plate under the condition of not forming a welding hole; the inner side is continuously pasted with a ceramic liner, and the outer side is formed by single-side welding and double-side welding, so that the butt welding seam is kept continuous at the web plate; and after the butt welding seam is qualified through nondestructive testing, removing the surplus height of the back surface, and completing the welding seam between the rest part of the web plate and the upper and lower flange edges. The welding method ensures the continuity of the upper and lower flange butt welding seams at the web position, and improves the quality of the welding seams and the fatigue resistance of the whole structure.
Description
Technical Field
The invention relates to a welding method for a cross-shaped welding line without forming a welding hole.
Background
The crossed part of the flange plate butt welding seam and the web plate is generally processed by means of forming a through welding hole at the corresponding position of the web plate. When the fatigue stress amplitude of the part is too large, the requirement of structural fatigue stress cannot be met by arranging the over-welding holes, and the safety of the bridge structure is influenced.
Disclosure of Invention
The invention aims to provide a welding method for preventing a cross welding seam from forming a welding hole, and solves the problem that when the fatigue stress amplitude of a cross part of a flange plate butt welding seam and a web plate is too large, the forming of the welding hole cannot meet the requirement of structural fatigue stress, and the safety of a bridge structure is influenced.
The technical scheme adopted for achieving the purpose is that the welding method for preventing the cross-shaped welding seam from passing through the welding hole comprises the following steps: supporting the flange plate to a certain height at the crossed part of the butt weld of the flange plate and the web plate under the condition of not forming a welding hole; the inner side is continuously pasted with a ceramic liner, and the outer side is formed by single-side welding and double-side welding, so that the butt welding seam is kept continuous at the web plate; and after the butt welding seam is qualified through nondestructive testing, removing the surplus height of the back surface, and completing the welding seam between the rest part of the web plate and the upper and lower flange edges.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
The invention effectively ensures the continuity of the butt welding seam at the cross connection part of the web plate, can effectively detect the welding seam and ensure the welding quality.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a detail view of the cross-shaped cross-section of the butt weld of the flange plate and the web plate of the present invention;
FIG. 2 is a schematic view of the present invention after the upper and lower flange plates are spread apart;
FIG. 3 is a schematic view of the present invention after the butt joint of the upper and lower flange plates is completed;
FIG. 4 is a schematic view of the web of the present invention after completion of the weld between the remaining portion of the web and the upper and lower flanges.
Shown in the figure: 1. the welding method comprises the following steps of upper flange 2, lower flange 3, web 4, upper flange butt-joint welding seam 5, lower flange butt-joint welding seam 6, ceramic liner 7, welding seam between the rest part of the web and the upper flange, and welding seam between the rest part of the web and the lower flange 8.
Detailed Description
A welding method for a cross-shaped welding seam without forming a welding hole comprises the following steps:
1) supporting the flange plate at the crossed part of the butt welding seam of the flange plate and the web plate under the condition of not forming a welding hole;
2) the inner side is continuously pasted with a ceramic liner, and the outer side is formed by single-side welding and double-side welding, so that the butt welding seam is kept continuous at the web plate;
3) and after the butt welding seam is qualified through nondestructive testing, removing the surplus height of the back surface, and completing the welding seam between the rest part of the web plate and the upper and lower flange edges.
Examples
As shown in fig. 1 to 4, an embodiment of the present invention provides a welding method for a cross-shaped weld without forming a weld hole, the welding method including: supporting the flange plate to a certain height at the crossed part of the butt weld of the flange plate and the web plate under the condition of not forming a welding hole; the inner side is continuously pasted with a ceramic liner, and the outer side is formed by single-side welding and double-side welding, so that the butt welding seam is kept continuous at the web plate; and after the butt welding seam is qualified through nondestructive testing, removing the surplus height of the back surface, and completing the welding seam between the rest part of the web plate and the upper and lower flange edges.
Supporting the upper flange 1 and the lower flange 2 to a certain height, continuously adhering a ceramic liner 6 on the inner side, and performing single-side welding and double-side molding on the outer side to keep the upper flange butt weld 4 and the lower flange butt weld 5 continuous at the web 3; and after the nondestructive testing of the upper flange butt welding seam 4 and the lower flange butt welding seam 5 is qualified, removing the residual height of the back surface, and completing the welding seam 7 between the residual part of the web plate and the upper and lower flange and the welding seam 8 between the residual part of the web plate and the lower flange.
The main control point of the invention is that the ends of the upper and lower flange plates are supported by proper height in a mechanical or fire roasting way, which ensures that not only enough stations are provided for sticking ceramic liners, but also the height is not too high, so that the gap between the web plates and the upper and lower flange plates cannot be too large after the butt welding seam is finished.
Claims (1)
1. A welding method for a cross-shaped welding seam without forming a welding hole is characterized by comprising the following steps: 1) supporting the flange plate at the crossed part of the butt welding seam of the flange plate and the web plate under the condition of not forming a welding hole;
2) the inner side is continuously pasted with a ceramic liner, and the outer side is formed by single-side welding and double-side welding, so that the butt welding seam is kept continuous at the web plate;
3) and after the butt welding seam is qualified through nondestructive testing, removing the surplus height of the back surface, and completing the welding seam between the rest part of the web plate and the upper and lower flange edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079444.9A CN107900544B (en) | 2017-11-06 | 2017-11-06 | Welding method for cross-shaped welding line without forming welding hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079444.9A CN107900544B (en) | 2017-11-06 | 2017-11-06 | Welding method for cross-shaped welding line without forming welding hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107900544A CN107900544A (en) | 2018-04-13 |
| CN107900544B true CN107900544B (en) | 2020-03-13 |
Family
ID=61842610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711079444.9A Active CN107900544B (en) | 2017-11-06 | 2017-11-06 | Welding method for cross-shaped welding line without forming welding hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107900544B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127588A (en) * | 1981-01-29 | 1982-08-07 | Nippon Kokan Kk <Nkk> | Method for welding of structural members consisting of facing and frame to each other |
| JPH0910992A (en) * | 1995-06-27 | 1997-01-14 | Sunouchi:Kk | Method for joining h-shape steel beam with steel column and electric conductor used therefor |
| CN202137513U (en) * | 2011-05-03 | 2012-02-08 | 扬帆集团股份有限公司 | Novel over-welding hole of 92500T bulk cargo ship |
| CN106475694A (en) * | 2016-11-24 | 2017-03-08 | 沪东中华造船(集团)有限公司 | A kind of method for being secured across clearance hole steel sleeve |
-
2017
- 2017-11-06 CN CN201711079444.9A patent/CN107900544B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127588A (en) * | 1981-01-29 | 1982-08-07 | Nippon Kokan Kk <Nkk> | Method for welding of structural members consisting of facing and frame to each other |
| JPH0910992A (en) * | 1995-06-27 | 1997-01-14 | Sunouchi:Kk | Method for joining h-shape steel beam with steel column and electric conductor used therefor |
| CN202137513U (en) * | 2011-05-03 | 2012-02-08 | 扬帆集团股份有限公司 | Novel over-welding hole of 92500T bulk cargo ship |
| CN106475694A (en) * | 2016-11-24 | 2017-03-08 | 沪东中华造船(集团)有限公司 | A kind of method for being secured across clearance hole steel sleeve |
Non-Patent Citations (1)
| Title |
|---|
| H型钢组装焊接产生裂纹的原因分析;梁博等;《钢结构》;20080430(第04期);第61-64页 * |
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| Publication number | Publication date |
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| CN107900544A (en) | 2018-04-13 |
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| PB01 | Publication | ||
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shi Lianghong Inventor after: Li Yanguo Inventor after: Lv Dacai Inventor after: Zhu Dongming Inventor after: Huang Yong Inventor after: Li Min Inventor after: Ma Deli Inventor after: Wang Yuangen Inventor after: Huang Xin Inventor after: Wang Suili Inventor before: Zhu Dongming Inventor before: Zheng Ziyuan Inventor before: Huang Yong Inventor before: Guo Hongyan Inventor before: Li Min Inventor before: Chen Qian Inventor before: Jin Qiao |
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Effective date of registration: 20200507 Address after: 332000 No. 148 East Binjiang Road, Jiangxi, Jiujiang Co-patentee after: CHINA RAILWAY SHANGHAI GROUP Co.,Ltd. Patentee after: CHINA RAILWAY JIUJIANG BRIDGE ENGINEERING Co.,Ltd. Co-patentee after: CHINA RAILWAY BAOJI BRIDGE GROUP Co.,Ltd. Address before: 332004 No. 148 East Binjiang Road, Jiangxi, Jiujiang Patentee before: CHINA RAILWAY JIUJIANG BRIDGE ENGINEERING Co.,Ltd. |