CN110026662B - Titanium alloy welding area protection tool and welding method thereof - Google Patents
Titanium alloy welding area protection tool and welding method thereof Download PDFInfo
- Publication number
- CN110026662B CN110026662B CN201910251392.1A CN201910251392A CN110026662B CN 110026662 B CN110026662 B CN 110026662B CN 201910251392 A CN201910251392 A CN 201910251392A CN 110026662 B CN110026662 B CN 110026662B
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- China
- Prior art keywords
- welding
- hanging basket
- protective shell
- air
- titanium alloy
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- 238000003466 welding Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 49
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 238000011156 evaluation Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 3
- 239000008188 pellet Substances 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
Abstract
The invention belongs to the technical field of welding processes, and particularly relates to a titanium alloy welding area protection tool and a welding method thereof, wherein the welding method comprises the following steps: the device comprises a protective shell, a hanging basket, an air equalizing plate and a core block; the hanging basket is hung inside the protective shell, and the air homogenizing plate is arranged between the protective shell and the hanging basket; the pellet sets up inside the hanging flower basket, pellet lower extreme and air-equalizing plate upper end threaded connection. The design of the invention does not need vacuumizing equipment, and is more effective and simple for the evaluation work of the subsequent titanium insert welding process.
Description
Technical Field
The invention belongs to the technical field of welding processes, and particularly relates to a titanium alloy welding area protection tool and a welding method thereof.
Background
In the prior art, proper titanium sheets are mainly inserted into gaps in the nuclear power plant turbine blade shroud (titanium alloy) gap exceeding, and welding is performed after the gaps are adjusted, and as titanium and titanium alloy are active in chemical properties, the welding process is easily polluted by impurities such as oxygen, hydrogen, nitrogen and the like, so that the performance of a welding seam is poor, and the welding process and the protection of a welding area after welding are important factors for determining the quality of the welding seam.
Titanium and titanium alloy welding with the thickness below 3mm adopts argon tungsten-arc welding at present, and is divided into two types of open welding and welding in a box. The open type welding is under the atmospheric environment, which belongs to a local gas shielded welding method. The welding in the box is to place the test piece in the box body or the operation room, vacuumize before welding, then fill with protective gas such as argon, and the like, belonging to the whole gas protection.
The open type protection is suitable for welding with simple structure, is carried out by utilizing the towing cover, is convenient to implement, and has general protection effect. The box body protection needs a vacuum box body, is complex to operate, and is applicable to certain limitation. According to the actual specification and size of the titanium insert, the welding construction is inconvenient in the two welding area protection modes when the welding process assessment work is carried out. Therefore, in order to solve the above problem of protecting the welding area in the process of evaluating the welding process of the titanium alloy insert sheet of the steam turbine, a titanium alloy welding area protecting tool needs to be designed to solve the above technical problem.
Disclosure of Invention
The invention aims to provide a titanium alloy welding area protection tool and a welding method thereof for solving the technical problems of more auxiliary welding personnel, complex welding operation and limitation of the application of an operation tool in the prior art.
The technical scheme of the invention is as follows:
a titanium alloy weld zone protection tool comprising: the device comprises a protective shell, a hanging basket, an air equalizing plate and a core block; the hanging basket is hung inside the protective shell, and the air homogenizing plate is arranged between the protective shell and the hanging basket; the pellet sets up inside the hanging flower basket, pellet lower extreme and air-equalizing plate upper end threaded connection.
As described above, the whole protective housing is of a hollow cylindrical structure, the bottom of the protective housing is provided with an air passage, and the air passage and the interior of the protective housing are connected with each other, so that protective gas enters from the air passage.
As described above, the whole core block is in a solid cylinder structure, the lower end of the core block is provided with a cylinder-shaped boss, and the outer surface of the boss is provided with threads.
The hanging basket is integrally of a hollow cylindrical structure, and the annular boss is arranged at the upper end of the hanging basket and is used for being hung in the protective shell; a plurality of through holes are uniformly distributed around the hanging basket.
The center of the bottom of the hanging basket is also provided with a threaded through hole.
As described above, the surface of the air-homogenizing plate is uniformly provided with a plurality of vent holes, the upper end of the air-homogenizing plate is also provided with a threaded groove, and the inner diameter size of the threaded groove is matched with the size of the cylindrical boss at the lower end of the core block; the outer diameter of the threaded groove is matched with the size of the threaded through hole at the bottom of the hanging basket.
A method of welding any of the titanium alloy weld zone protection tools described above, comprising the steps of:
step one: placing a titanium insert process evaluation test block in a welding area at the upper end of the core block;
step two: after the air channel at the bottom of the protective shell is filled with protective gas for a period of time, the protective gas continuously covers the periphery of the whole welding test piece through the hanging basket and the air homogenizing plate, and after air is isolated, the welding work is started.
Step three: and after the welding work is finished, continuously filling the protective gas until the welding seam of the welded test piece is reduced to a specific temperature.
The invention has the following beneficial effects:
according to the invention, a suitable special tool is developed according to the actual specification and size of the titanium alloy inserting sheet, and the designed tool controls the protective gas to cover the whole welding test piece in a continuous steady-flow state through a special design structure and proper materials, thereby isolating air, rapidly reducing the temperature of the welding test piece and ensuring that the test piece can achieve a satisfactory protection effect even in an open environment.
If the same process evaluation is carried out, an open type supporting cover protection method is adopted, a welder is generally required to be equipped, the specific implementation of welding is responsible, and an assistant worker is responsible for tracking and filling protection gas. By using the special tool designed by the invention, all work can be completed by only one welder, and the operation is simpler. Compared with the vacuum box body in the prior art, the design of the invention does not need vacuumizing equipment, and is more effective and simpler for the evaluation work of the subsequent titanium insert welding process.
Drawings
FIG. 1 is a schematic view of a titanium alloy welding area protection tool according to the present invention;
FIG. 2 is a schematic structural illustration of a protective shell of a titanium alloy welding area protection tool designed according to the invention;
FIG. 3 is a schematic view of a basket structure of a titanium alloy welding area protection tool designed by the invention;
FIG. 4 is a schematic diagram of a gas-homogenizing plate structure of a titanium alloy welding area protection tool designed by the invention;
FIG. 5 is a schematic diagram of the structure of a titanium alloy welding area protection tool core block designed by the invention.
Wherein, the device comprises a 1-protective shell, a 2-hanging basket, a 3-air homogenizing plate and a 4-core block
Detailed Description
The technology of the present invention is further described below:
as shown in fig. 1 to 5, a titanium alloy welding area protection tool includes: the device comprises a protective shell 1, a hanging basket 2, a gas-equalizing plate 3 and core blocks 4; the hanging basket 2 is hung inside the protective shell 1, and the air homogenizing plate 3 is arranged between the protective shell 1 and the hanging basket 2; the pellet 4 is arranged inside the hanging basket 2, and the lower end of the pellet 4 is in threaded connection with the upper end of the air homogenizing plate 3.
As described above, the protective housing 1 is integrally in a hollow cylindrical structure, the bottom of the protective housing 1 is provided with an air passage, and the air passage and the interior of the protective housing 1 are together with each other, so that the protective gas enters from the air passage.
As described above, the whole core block 4 is in a solid cylinder structure, the lower end of the core block 4 is provided with a cylinder boss, and the outer surface of the boss is provided with threads.
As described above, the hanging basket 2 is of a hollow cylindrical structure as a whole, and the upper end of the hanging basket 2 is provided with an annular boss for hanging in the protective shell 1; a plurality of through holes are uniformly distributed around the hanging basket 2.
The center of the bottom of the hanging basket 2 is also provided with a threaded through hole.
As described above, the surface of the air-homogenizing plate 3 is uniformly provided with a plurality of vent holes, the upper end of the air-homogenizing plate 3 is also provided with a thread groove, and the inner diameter size of the thread groove is matched with the size of the cylindrical boss at the lower end of the core block 4; the outer diameter of the thread groove is matched with the size of the thread through hole at the bottom of the hanging basket 2.
The protective shell 1 is a body of the tool, an air passage is arranged below the protective shell 1, and protective gas enters from the air passage; the hanging basket 2 is hung in the protective shell 1, a welding protective area is established, a plurality of air passages are arranged around and below the hanging basket 2, and protective gas enters from the air passages and covers a test piece in the welding area, so that the air is isolated and the protective effect is achieved; the gas equalizing plate 3 homogenizes the shielding gas and keeps the shielding gas flowing in uniformly; the welding test piece is accepted to pellet 4 top, below and air-equalizing plate 3 threaded connection to fixed air-equalizing plate 3.
A method of welding any of the titanium alloy weld zone protection tools described above, comprising the steps of:
step one: placing a titanium insert process evaluation test block in a welding area at the upper end of the core block 4;
step two: after the air passage at the bottom of the protective shell 1 is filled with protective gas for a period of time, the protective gas continuously covers the periphery of the whole welding test piece through the hanging basket 2 and the air homogenizing plate 3, and after air is isolated, the welding work is started.
Step three: and after the welding work is finished, continuously filling the protective gas until the welding seam of the welded test piece is reduced to a specific temperature.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (1)
1. A welding method using a titanium alloy welding area protection tool, characterized in that the titanium alloy welding area protection tool comprises: the device comprises a protective shell (1), a hanging basket (2), a gas-equalizing plate (3) and core blocks (4); the hanging basket (2) is hung inside the protective shell (1), and the air homogenizing plate (3) is arranged between the protective shell (1) and the hanging basket (2); the core blocks (4) are arranged inside the hanging basket (2),
the lower end of the core block (4) is in threaded connection with the upper end of the air equalizing plate (3);
the protective shell (1) is integrally of a hollow cylindrical structure, an air passage is arranged at the bottom of the protective shell (1), and the air passage and the interior of the protective shell (1) are connected with each other, so that protective gas enters from the air passage;
the whole core block (4) is of a solid cylinder structure, a cylinder-shaped boss is arranged at the lower end of the core block (4), and threads are arranged on the outer surface of the boss;
the hanging basket (2) is of a hollow cylindrical structure as a whole, and an annular boss is arranged at the upper end of the hanging basket (2) and is used for being hung in the protective shell (1); a plurality of through holes are uniformly distributed around the hanging basket (2);
a threaded through hole is further formed in the center of the bottom of the hanging basket (2);
a plurality of vent holes are uniformly distributed on the surface of the air homogenizing plate (3), a threaded groove is further formed in the upper end of the air homogenizing plate (3), and the inner diameter size of the threaded groove is matched with the size of a cylindrical boss at the lower end of the core block (4); the outer diameter of the thread groove is matched with the size of a thread through hole at the bottom of the hanging basket (2);
the welding method adopting the titanium alloy welding area protection tool comprises the following steps:
step one: placing a titanium insert process evaluation test block in a welding area at the upper end of the core block (4);
step two: after the bottom air passage of the protective shell (1) is filled with protective gas for a period of time, the protective gas is continuously covered around the whole welding test piece through the hanging basket (2) and the air homogenizing plate (3), and after air is isolated, the welding work is started;
step three: and after the welding work is finished, continuously filling the protective gas until the welding seam of the welded test piece is reduced to a specific temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251392.1A CN110026662B (en) | 2019-03-29 | 2019-03-29 | Titanium alloy welding area protection tool and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251392.1A CN110026662B (en) | 2019-03-29 | 2019-03-29 | Titanium alloy welding area protection tool and welding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110026662A CN110026662A (en) | 2019-07-19 |
| CN110026662B true CN110026662B (en) | 2024-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910251392.1A Active CN110026662B (en) | 2019-03-29 | 2019-03-29 | Titanium alloy welding area protection tool and welding method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026662B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10202367A (en) * | 1997-01-23 | 1998-08-04 | Nippon Steel Weld Prod & Eng Co Ltd | One side gas shield arc welding method |
| JP2003236661A (en) * | 2002-02-18 | 2003-08-26 | Hitachi Ltd | Gas turbine blade and method of manufacturing the same |
| CN101032773A (en) * | 2007-04-18 | 2007-09-12 | 南京三超金刚石工具有限公司 | Method and device for the braze welding of tool made of superhard material |
| CN201862936U (en) * | 2010-10-13 | 2011-06-15 | 沈阳飞机工业（集团）有限公司 | Convenient inert gas protection box used for welding |
| CN105127559A (en) * | 2015-09-25 | 2015-12-09 | 兰州兰石重型装备股份有限公司 | Argon shielding device for titanium material welding and usage method of device |
| CN206967528U (en) * | 2017-07-03 | 2018-02-06 | 四川达宇特种车辆制造厂 | A kind of titanium alloy welding device |
| CN107671464A (en) * | 2017-11-14 | 2018-02-09 | 德阳东汽电站机械制造有限公司 | A kind of industrially pure titanium welding argon gas protection cabin |
| CN108941862A (en) * | 2018-09-17 | 2018-12-07 | 兰州兰石能源装备工程研究院有限公司 | Titanium welds the guard method of argon gas protective cover and titanium soldered |
| CN209886880U (en) * | 2019-03-29 | 2020-01-03 | 江苏核电有限公司 | Titanium alloy welding area protection tool |
-
2019
- 2019-03-29 CN CN201910251392.1A patent/CN110026662B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10202367A (en) * | 1997-01-23 | 1998-08-04 | Nippon Steel Weld Prod & Eng Co Ltd | One side gas shield arc welding method |
| JP2003236661A (en) * | 2002-02-18 | 2003-08-26 | Hitachi Ltd | Gas turbine blade and method of manufacturing the same |
| CN101032773A (en) * | 2007-04-18 | 2007-09-12 | 南京三超金刚石工具有限公司 | Method and device for the braze welding of tool made of superhard material |
| CN201862936U (en) * | 2010-10-13 | 2011-06-15 | 沈阳飞机工业（集团）有限公司 | Convenient inert gas protection box used for welding |
| CN105127559A (en) * | 2015-09-25 | 2015-12-09 | 兰州兰石重型装备股份有限公司 | Argon shielding device for titanium material welding and usage method of device |
| CN206967528U (en) * | 2017-07-03 | 2018-02-06 | 四川达宇特种车辆制造厂 | A kind of titanium alloy welding device |
| CN107671464A (en) * | 2017-11-14 | 2018-02-09 | 德阳东汽电站机械制造有限公司 | A kind of industrially pure titanium welding argon gas protection cabin |
| CN108941862A (en) * | 2018-09-17 | 2018-12-07 | 兰州兰石能源装备工程研究院有限公司 | Titanium welds the guard method of argon gas protective cover and titanium soldered |
| CN209886880U (en) * | 2019-03-29 | 2020-01-03 | 江苏核电有限公司 | Titanium alloy welding area protection tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110026662A (en) | 2019-07-19 |
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