CN114227039A - Movable vacuum repair welding method and repair welding device - Google Patents
Movable vacuum repair welding method and repair welding device Download PDFInfo
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- CN114227039A CN114227039A CN202111515106.1A CN202111515106A CN114227039A CN 114227039 A CN114227039 A CN 114227039A CN 202111515106 A CN202111515106 A CN 202111515106A CN 114227039 A CN114227039 A CN 114227039A
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- 238000003466 welding Methods 0.000 title claims abstract description 133
- 230000008439 repair process Effects 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000011261 inert gas Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000007796 conventional method Methods 0.000 claims abstract description 7
- 238000001179 sorption measurement Methods 0.000 claims description 29
- 239000000084 colloidal system Substances 0.000 claims description 14
- 239000013013 elastic material Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 5
- 206010067484 Adverse reaction Diseases 0.000 abstract description 4
- 230000006838 adverse reaction Effects 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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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
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Abstract
The invention discloses a movable vacuum repair welding method and a repair welding device, which comprises the steps of firstly covering a repair welding device on a region to be repaired, then placing a welding tool in the repair welding device, sealing the repair welding device, inflating and expanding the repair welding device, and finally carrying out vacuum repair welding operation according to a conventional method. By adopting the repair welding method and the repair welding device, a movable closed vacuum repair welding environment is created by introducing inert gas, adverse reaction caused by contact with air in the welding process is avoided, the product quality can be effectively ensured, the bottleneck problem of enterprises in the welding process is solved, the problem of no implementation condition of vacuum repair welding is realized, and the repair welding method and the repair welding device have the advantages of high flexibility, convenience in operation, convenience in use and the like, have higher economic and social benefits, and are worthy of popularization and application in the industry.
Description
Technical Field
The invention relates to the technical field of vacuum welding, in particular to a movable vacuum repair welding method and a repair welding device.
Background
With the continuous progress of science and technology, more and more novel materials are used in engineering applications, and people have higher requirements on products. Taking metals with higher activity such as titanium alloy as an example, the processing mode of the metal material products is special, and vacuum welding is adopted for welding, because the metal materials are contacted with air in the welding process, oxide scales are generated due to oxidation reaction, and the oxide scales are difficult and complicated to clean. Meanwhile, during welding, hydrogen embrittlement can be caused by hydrogen absorption, so that the welded product is easy to break or crack during use. In order to prevent such metal material products from contacting air as much as possible during the welding process, vacuum welding is adopted. As the requirements of people on the precision of mechanical manufacturing are higher and higher, the vacuum welding develops the welding technology in a new way by using the unique vacuum environment, the technical innovation in the sterile vacuum environment is realized, and the welding technology develops in a new way.
However, since the vacuum welding is required to be performed in a dedicated facility, in a discrete manufacturing company, after parts are assembled into a module or a part after welding, repair welding may be required due to an emergency, and when the parts are required to be repaired, conditions that are difficult to ensure the vacuum repair welding are directly performed on the module or the part, and welding is performed under normal conditions, which may cause problems of scale formation and "hydrogen embrittlement", and in this case, only the module or the part may be disassembled, and then the parts are returned to the dedicated facility to be repaired.
In the actual assembly and use process, a part of assemblies and parts cannot be disassembled due to the limitation of connection modes such as glue joint, welding and the like, and the disassembled assemblies or parts are easily scrapped due to the fact that rivet holes are enlarged or faults such as cracks and fractures are generated on parts in the disassembling process. Although such metal materials (such as titanium alloy materials) bring more excellent performance to products, the processing mode is special and repair welding cannot be performed, so that the metal materials also become a bottleneck of manufacturing enterprises.
Disclosure of Invention
The invention aims to solve the technical problems in the background art and provides a movable vacuum repair welding method which is high in flexibility, convenient to operate and capable of effectively guaranteeing the product quality.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a movable vacuum repair welding method comprises the steps of firstly covering a repair welding device on a region to be repaired, then placing a welding tool in the repair welding device, sealing the repair welding device, inflating and expanding the repair welding device, and finally performing vacuum repair welding operation according to a conventional method; the method specifically comprises the following steps:
the vacuum repair welding method comprises the following steps:
step 1: covering the device body in a region to be subjected to vacuum repair welding;
step 2: adsorbing part of the adsorption device on a component or part structure of an area to be subjected to vacuum repair welding;
and step 3: firstly, all welding wires, clamping tools and other auxiliary appliances used for welding are placed in the device body, and then the rest adsorption devices are all adsorbed on the device body;
and 4, step 4: an air inlet pipe connected with external inert gas is connected into the air inlet channel, and an air discharge pipe with the diameter consistent with that of the air inlet pipe is connected into the air discharge channel;
and 5: putting a welding tool into the device body through the tool channel, and finally coating colloidal or muddy substances on the air inlet channel, the air outlet channel, the tool channel and the gap part of the adsorption device to enable the welding tool to reach a sealing state;
step 6: the inert gas is injected into the device body through the air inlet pipe in the air inlet channel, the air outlet pipe at the exhaust channel is blocked by fingers, and the fingers can be released after the device body is inflated and expanded to be in a cover shape;
and 7: checking whether air leakage exists in the gap part of the adsorption device or not, if the air leakage phenomenon exists, suspending inflation, and repeating the step 5 until no air leakage exists, so as to carry out the next step;
and 8: and continuously inflating the device body for 20-30 minutes to enable the device body to expand to a cover-shaped structure, extending the two hands of an operator into the left operation channel and the right operation channel, and finally performing vacuum repair welding operation according to a conventional method.
Further, the vacuum repair welding method is adopted, wherein the device body is made of colloid elastic material and is made into a cover-shaped structure; and the adsorption device is made of colloid elastic material and is of a panel structure.
Further, the vacuum repair welding method is adopted, wherein operation gloves which are hermetically isolated from the device body are arranged inside the left operation channel and the right operation channel.
Further, the vacuum repair welding method of the present invention is adopted, wherein the size of the tool passage is 1.2 times the size of the welding tool.
The invention also provides a welding device adopting the vacuum repair welding method, the repair welding device comprises a device body and an adsorption device, the device body is made into a cover-shaped structure by adopting colloid elastic materials, and the adsorption device is made into a panel structure by adopting colloid elastic materials; the device comprises a device body and is characterized in that an air inlet channel, an air exhaust channel, a tool channel and an operation channel are arranged on the device body, the air inlet channel and the air exhaust channel are respectively arranged on the left side and the right side of the device body, the tool channel is arranged on one side close to the air exhaust channel, the operation channel comprises a left operation channel and a right operation channel, the left operation channel and the right operation channel are arranged above the tool channel and are positioned on the left side and the right side of the device body, and operation gloves hermetically isolated from the device body are arranged inside the left operation channel and the right operation channel; the adsorption device is arranged at the bottom of the device body and is in sealing connection with the device body to form a closed vacuum repair welding environment.
Compared with the prior art, the movable vacuum repair welding method and the repair welding device have the advantages that: the device body and the adsorption device are connected with a component or part to be subjected to vacuum repair welding, and inert gas is introduced, so that a movable closed vacuum repair welding environment is formed, adverse reaction caused by contact with air in a welding process is avoided, and the product quality can be effectively ensured; meanwhile, the device body and the adsorption device are both made of colloid elastic materials, so that the vacuum repair welding device can adapt to components or parts with different structural forms to perform vacuum repair welding operation.
In conclusion, by adopting the repair welding method and the repair welding device, a movable closed vacuum repair welding environment is created by introducing inert gas, adverse reaction caused by contact with air in the welding process is avoided, the product quality can be effectively ensured, the bottleneck problem of enterprises in the welding process is solved, the problem of no implementation condition of vacuum repair welding is realized, and the repair welding method and the repair welding device have the advantages of high flexibility, convenience in operation, convenience in use and the like, have higher economic and social benefits, and are worthy of popularization and application in the industry.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
Shown in the figure: 1-device body, 11-air inlet channel, 12-air outlet channel, 13-tool channel, 14-left operation channel, 15-right operation channel and 2-adsorption device.
Detailed Description
To further illustrate the concepts of the present invention, embodiments of the present invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the movable vacuum repair welding method of the present invention comprises covering the repair welding device on the region to be repaired, then placing the welding tool in the repair welding device, sealing the repair welding device, inflating the expansion repair welding device, and finally performing vacuum repair welding operation according to the conventional method; the method specifically comprises the following steps:
step 1: covering the device body 1 in a region to be subjected to vacuum repair welding;
step 2: adsorbing part of the adsorption device 2 on the component or part structure of the area to be subjected to vacuum repair welding;
and step 3: firstly, all welding wires, clamping tools and other auxiliary appliances used for welding are put into the device body 1, and then all the rest adsorption devices 2 are adsorbed on the device body 1;
and 4, step 4: an air inlet pipe connected with external inert gas is connected into the air inlet channel 11, and an air outlet pipe with the diameter consistent with that of the air inlet pipe is connected into the air outlet channel 12;
and 5: putting a welding tool into the device body 1 through the tool channel 13, and finally coating a colloidal or muddy substance on the air inlet channel 11, the air outlet channel 12, the tool channel 13 and the gap part of the adsorption device 2 to enable the welding tool to reach a sealing state;
step 6: the inert gas is injected into the device body 1 through the air inlet pipe in the air inlet channel 11, the air outlet pipe at the exhaust channel 12 is blocked by fingers, and the fingers can be released after the device body 1 is inflated and expanded to be in a cover shape;
and 7: checking whether air leakage exists at the gap part of the adsorption device 2 or not, if the air leakage phenomenon exists, suspending inflation, and repeating the step 5 until no air leakage exists, so as to carry out the next step;
and 8: and continuously inflating the device body 1 for 20-30 minutes to enable the device body to expand to a cover-shaped structure, enabling an operator to stretch two hands into the left operation channel 14 and the right operation channel 15, and finally performing vacuum repair welding operation according to a conventional method.
The welding device adopting the vacuum repair welding method comprises a device body 1 and an adsorption device 2, wherein the device body 1 is made of colloid elastic materials and is in a cover-shaped structure, and the adsorption device 2 is made of colloid elastic materials and is in a panel structure; the device comprises a device body 1, and is characterized in that an air inlet channel 11, an air outlet channel 12, a tool channel 13 and an operation channel are arranged on the device body 1, the air inlet channel 11 and the air outlet channel 12 are respectively arranged on the left side and the right side of the device body 1, the tool channel 13 is arranged on one side close to the air outlet channel 12, the operation channel comprises a left operation channel 14 and a right operation channel 15, the left operation channel 14 and the right operation channel 15 are arranged above the tool channel 13 and are positioned on the left side and the right side of the device body 1, and operation gloves hermetically isolated from the device body 1 are arranged inside the left operation channel 14 and the right operation channel 15; the adsorption device 2 is arranged at the bottom of the device body 1 and is hermetically connected with the device body 1 to form a closed vacuum repair welding environment.
In order to ensure that the repair welding method has the characteristic of high flexibility, the device body 1 and the adsorption device 2 are both made of colloid elastic materials, meanwhile, operation gloves hermetically isolated from the device body 1 are arranged inside the left operation channel 14 and the right operation channel 15, and welding operation is conveniently carried out by using the operation gloves. The operation gloves are general colloid gloves in the prior art, and the operation is convenient as long as both hands are convenient to stretch into the device body 1. In addition, in order to ensure that the welding tool can smoothly enter the device body 1, the size of the tool passage 13 is 1.2 times that of the welding tool.
In the practical application process, the movable vacuum repair welding method is adopted, the device body 1 and the adsorption device 2 are connected with a component or part to be subjected to vacuum repair welding, inert gas is introduced, so that a movable closed vacuum repair welding environment is formed, an operator stretches two hands into the left operation channel 14 and the right operation channel 15, and vacuum repair welding operation is performed through operation gloves arranged in the device body and hermetically isolated from the device body 1. Adverse reaction caused by contact with air in the welding process is avoided, and the product quality can be effectively ensured; meanwhile, the device body 1 and the adsorption device 2 are both made of colloid elastic materials, so that the vacuum repair welding device can adapt to components or parts with different structural forms to perform vacuum repair welding operation.
In conclusion, the repair welding method and the repair welding device provided by the invention create a movable closed vacuum repair welding environment by introducing inert gas, thereby not only effectively solving the problem that the vacuum repair welding has no implementation condition, but also solving the bottleneck problem of enterprises in the welding process.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art, and any modifications, equivalents, improvements, etc. made by using the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A movable vacuum repair welding method is characterized by comprising the steps of firstly covering a repair welding device on a region to be repaired, then placing a welding tool in the repair welding device, sealing the repair welding device, inflating and expanding the repair welding device, and finally performing vacuum repair welding operation according to a conventional method; the method specifically comprises the following steps:
step 1: covering the device body (1) in an area to be subjected to vacuum repair welding;
step 2: adsorbing part of the adsorption device (2) on the component or part structure of the area to be subjected to vacuum repair welding;
and step 3: firstly, all welding wires, clamping tools and other auxiliary appliances used for welding are put into the device body (1), and then all the rest adsorption devices (2) are adsorbed on the device body (1);
and 4, step 4: an air inlet pipe connected with external inert gas is connected into the air inlet channel (11), and an air outlet pipe with the diameter consistent with that of the air inlet pipe is connected into the air outlet channel (12);
and 5: putting a welding tool into the device body (1) through the tool channel (13), and finally coating colloidal or muddy substances on the gap parts of the air inlet channel (11), the air outlet channel (12), the tool channel (13) and the adsorption device (2) to enable the welding tool to reach a sealing state;
step 6: inert gas is injected into the device body (1) through the air inlet pipe in the air inlet channel (11), a gas outlet pipe at the exhaust channel (12) needs to be blocked by fingers, and the fingers can be released after the device body (1) is inflated and expanded to be in a cover shape;
and 7: checking whether air leakage exists at the gap part of the adsorption device (2), if air leakage exists, suspending inflation, and repeating the step 5 until no air leakage exists, so as to carry out the next step;
and 8: and continuously inflating the device body (1) for 20-30 minutes to enable the device body to expand to a cover-shaped structure, enabling an operator to stretch two hands into the left operation channel (14) and the right operation channel (15), and finally performing vacuum repair welding operation according to a conventional method.
2. The vacuum repair welding method according to claim 1, characterized in that: the device body (1) is made of colloid elastic material and is made into a cover-shaped structure; and the adsorption device (2) is made of colloid elastic material into a panel structure.
3. The vacuum repair welding method according to claim 1, characterized in that: and operating gloves sealed and isolated from the device body (1) are arranged inside the left operating channel (14) and the right operating channel (15).
4. The vacuum repair welding method according to claim 1, characterized in that: the size of the tool passage (13) is 1.2 times the size of the welding tool.
5. A repair welding apparatus using the vacuum repair welding method according to claim 1, characterized in that: the repair welding device comprises a device body (1) and an adsorption device (2), wherein the device body (1) is made of colloid elastic materials and is of a cover-shaped structure, and the adsorption device (2) is made of colloid elastic materials and is of a panel structure; the device comprises a device body (1) and is characterized in that an air inlet channel (11), an air exhaust channel (12), a tool channel (13) and an operation channel are arranged on the device body (1), the air inlet channel (11) and the air exhaust channel (12) are respectively arranged on the left side and the right side of the device body (1), the tool channel (13) is arranged on one side close to the air exhaust channel (12), the operation channel comprises a left operation channel (14) and a right operation channel (15), the left operation channel (14) and the right operation channel (15) are arranged above the tool channel (13) and are positioned on the left side and the right side of the device body (1), and operation gloves hermetically isolated from the device body (1) are arranged inside the left operation channel (14) and the right operation channel (15); the adsorption device (2) is arranged at the bottom of the device body (1) and is in sealing connection with the device body (1) to form a closed vacuum repair welding environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515106.1A CN114227039A (en) | 2021-12-13 | 2021-12-13 | Movable vacuum repair welding method and repair welding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515106.1A CN114227039A (en) | 2021-12-13 | 2021-12-13 | Movable vacuum repair welding method and repair welding device |
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| Publication Number | Publication Date |
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| CN114227039A true CN114227039A (en) | 2022-03-25 |
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| CN202111515106.1A Pending CN114227039A (en) | 2021-12-13 | 2021-12-13 | Movable vacuum repair welding method and repair welding device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433650A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Absorption-type vacuum welding equipment and process |
| CN204565455U (en) * | 2015-04-16 | 2015-08-19 | 中船黄埔文冲船舶有限公司 | Titanium alloy welding argon gas cover frock |
| CN204566163U (en) * | 2014-10-14 | 2015-08-19 | 长沙米淇仪器设备有限公司 | A kind of all-transparent vacuum glove box |
| CN205869672U (en) * | 2016-08-09 | 2017-01-11 | 南昌工程学院 | Smart foundry goods repair welding the argon protection welding set of high temperature alloy |
| CN106863362A (en) * | 2017-03-07 | 2017-06-20 | 深圳市赛格诺生物科技有限公司 | A kind of inert gas glove box and method |
| 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 |
| CN213224848U (en) * | 2020-09-08 | 2021-05-18 | 贵州安吉航空精密铸造有限责任公司 | Vacuum repair welding device for large castings |
-
2021
- 2021-12-13 CN CN202111515106.1A patent/CN114227039A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433650A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Absorption-type vacuum welding equipment and process |
| CN204566163U (en) * | 2014-10-14 | 2015-08-19 | 长沙米淇仪器设备有限公司 | A kind of all-transparent vacuum glove box |
| CN204565455U (en) * | 2015-04-16 | 2015-08-19 | 中船黄埔文冲船舶有限公司 | Titanium alloy welding argon gas cover frock |
| CN205869672U (en) * | 2016-08-09 | 2017-01-11 | 南昌工程学院 | Smart foundry goods repair welding the argon protection welding set of high temperature alloy |
| CN106863362A (en) * | 2017-03-07 | 2017-06-20 | 深圳市赛格诺生物科技有限公司 | A kind of inert gas glove box and method |
| 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 |
| CN213224848U (en) * | 2020-09-08 | 2021-05-18 | 贵州安吉航空精密铸造有限责任公司 | Vacuum repair welding device for large castings |
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Application publication date: 20220325 |