CN111761196A - Vacuum chamber internal protection system for preheating electron beam welding - Google Patents
Vacuum chamber internal protection system for preheating electron beam welding Download PDFInfo
- Publication number
- CN111761196A CN111761196A CN202010520721.0A CN202010520721A CN111761196A CN 111761196 A CN111761196 A CN 111761196A CN 202010520721 A CN202010520721 A CN 202010520721A CN 111761196 A CN111761196 A CN 111761196A
- Authority
- CN
- China
- Prior art keywords
- vacuum chamber
- protection
- electron beam
- beam welding
- steel wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- B23K15/00—Electron-beam welding or cutting
- B23K15/06—Electron-beam welding or cutting within a vacuum chamber
-
- 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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0033—Preliminary treatment
-
- 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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0046—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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/006—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
The invention relates to a vacuum chamber internal protection system for preheating electron beam welding, which is used for carrying out heat insulation protection on the inner wall of a vacuum chamber, an electron gun, a condenser tube, a tooling rotary table, internal switch components and the like by utilizing the protection system; on the other hand, the heat insulation protection effect can be achieved for parts except the structural member, the heat damage caused by overhigh local temperature is avoided, and the stable guarantee is provided for the vacuum preheating electron beam welding.
Description
Technical Field
The invention relates to the technical field of electron beam welding, in particular to a vacuum chamber internal protection system for preheating electron beam welding.
Background
With the progress of advanced equipment manufacturing technology, the strength of materials applied to titanium alloy is continuously improved, the thickness of the materials is continuously increased, the difficulty of electron beam welding suitable for large-thickness high-strength titanium alloy is gradually increased, and the toughness and the matching performance of a welding joint are reduced. Through experimental research, the comprehensive performance of the high-strength titanium alloy electron beam welding joint can be effectively improved by adopting the pre-welding preheating process.
The high temperature is preheated by a large heating device before welding in a vacuum environment, the current domestic existing vacuum electron beam welding design can not meet the service working condition of long-time and high-temperature heating, and moreover, the heat insulation protection is not carried out, the long-time heating is carried out in a vacuum chamber, and the heat damage to components and tools in the vacuum chamber is possibly caused; the high-temperature preheating work of vacuum electron beam welding titanium alloy is not reported at home and abroad, and related research reports on a protection system in a vacuum chamber are not needed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a vacuum chamber internal protection system for preheating electron beam welding, which is used for carrying out heat insulation protection on the inner wall of a vacuum chamber, an electron gun, a condenser tube, a tooling turntable, an internal switch component and the like by utilizing the protection system, so that on one hand, the dissipation of heat energy can be reduced, and the heat preservation effect on the center of a heating heat source is realized; on the other hand, the heat insulation protection effect can be achieved for parts except the structural member, the heat damage caused by overhigh local temperature is avoided, and the stable guarantee is provided for the vacuum preheating electron beam welding.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a real empty room inside protection system for preheating electron beam welding, vacuum preheating electron beam welding set includes electron gun, real empty room and preheating heater, treats that the welding workpiece is located the vacuum chamber, still is equipped with the condenser pipe in the vacuum chamber, protection system mainly comprises thermal-insulated reflecting screen and the protection network that is used for fixed thermal-insulated reflecting screen, specifically includes: an electron gun protection device, a vacuum chamber inner wall protection device and a condensation pipe protection device; the vacuum chamber inner wall protection device consists of heat insulation reflecting screens and steel wire protective nets, the heat insulation reflecting screens and the steel wire protective nets are mounted on the inner wall of the vacuum chamber to realize heat protection of the whole inner wall, the steel wire protective nets are distributed in a grid-shaped staggered manner and fix steel wires in a spot welding manner, the sizes of the grids can be adjusted according to the protection area required actually, the heat insulation reflecting screens are arranged between the steel wire protective nets as interlayers, the distance between every two adjacent protective nets is 2-5 mm, and the heat insulation reflecting screens are guaranteed to be separated from each other and not; electron gun protector adds the protective structure of thermal-insulated reflecting screen for the steel wire protection network that the slant was woven, can effectively avoid electron beam welded center on the basis of realizing the electron gun protection, conveniently implements the welding, condenser pipe protector adopts the steel wire protection network to add the structure of thermal-insulated reflecting screen, and condenser pipe protector establishes at the condenser pipe outside and does not cover the condenser pipe both ends.
Furthermore, the heat insulation reflecting screen is made of aluminum foil, and the thickness of the heat insulation reflecting screen is more than or equal to 0.05 mm.
Furthermore, the protection device and the protection parts can be assembled and fixed with each other, and can also be supported outside the protection parts independently to form an independent frame structure.
Has the advantages that: the invention provides a vacuum preheating electron beam welding protection system, which is used for protecting the interior of a vacuum chamber aiming at the vacuum preheating welding of high-strength alloys (titanium, steel and the like) and large-sized structural parts with large thickness; compared with the prior art, the invention has the following remarkable advantages: 1. the protection system can realize good protection on equipment, assist in completing high-temperature preheating welding of workpieces, and preheat in a vacuum environment, and can effectively prevent the damage to parts and components around the inside of a welding device through heat radiation when the preheating temperature is higher; 2. the protection device has better auxiliary effect on preheating while reflecting heat radiation, and can improve the preheating and heating efficiency; 3. compared with the heat insulation materials which are complex to manufacture and expensive, the protective device with the steel wire protective net and the aluminum foil interlayer is simple in design structure, easy to operate and low in cost.
Drawings
FIG. 1 is a schematic view of a vacuum pre-heating electron beam welding protection system;
FIG. 2 illustrates a condenser tube guard within a vacuum chamber;
FIG. 3 is a cross-sectional view of an inner wall guard of the vacuum chamber;
FIG. 4 is a schematic view of a protective net structure on the inner wall of a vacuum chamber;
fig. 5 is a schematic view of a protective net structure of the electron gun protective device.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
The invention provides a vacuum chamber internal protection system for preheating electron beam welding, which is shown in figure 1 as an overall structure schematic diagram of the vacuum preheating electron beam welding protection system, wherein a vacuum preheating electron beam welding device comprises a vacuum chamber 1, an electron gun 2, a condensing tube 3, a heating device 4 and the like which are arranged in the vacuum chamber 1; as shown in fig. 1 and 3, the protection system mainly comprises a heat-insulating reflecting screen 9 and a protective net 10 for fixing the heat-insulating screen, and specifically comprises: electron gun guard 6: the protective screen is composed of a protective screen 10 woven in an inclined mode and a heat insulation reflecting screen 9, and the protective structure woven in the inclined mode can effectively avoid the center of electron beam welding on the basis of achieving protection of the electron gun 1, so that welding is convenient to implement; vacuum chamber inner wall protection device 5: as shown in fig. 3, the heat-insulation protective device is composed of a heat-insulation reflecting screen 9 and a protective net 10, is the core of the protective device, and is installed on the inner wall 8 of the vacuum chamber to realize the heat protection of the whole inner wall; condenser pipe protector: the condensation pipe 3 is a vacuum chamber for condensing water vapor, assists in reducing the vacuum degree, needs an external protection device to prevent direct heat radiation of a heater, adopts a structure of a protective net 10 and a heat insulation reflection screen 9, is arranged around the outer wall of the condensation pipe 3, and does not cover two ends of the condensation pipe 3; the workpiece to be welded is placed on a rotary table in the vacuum chamber 1, and the heating device 4 is the center of the whole heating heat source and heats the workpiece to be welded.
Fig. 2 is a schematic view of the condenser tube 3 and its external protection device, the condenser tube protection device 7 is in the form of a right-angle folded plate and is protected outside the condenser tube, and two end portions of the condenser tube 3 need to generate condensation in the vacuum chamber 1 without a baffle, so as to facilitate the reduction of vacuum degree, and not only perform thermal protection but also do not affect the functionality.
Fig. 3 is a cross-sectional view of a vacuum chamber inner wall protection device 5, wherein the left side of the vacuum chamber inner wall protection device is a vacuum chamber inner wall 8, the right side of the vacuum chamber inner wall protection device is a protection device composed of protective nets 10 and a heat insulation reflection screen 9, the heat insulation reflection screen 9 is clamped between adjacent protective nets 10, aluminum foils are usually selected as the heat insulation reflection screen 9, the protective nets 10 can be specifically made of steel wire meshes, as shown in fig. 4, the steel wire meshes are woven into mesh-shaped staggered distribution, the steel wires are fixed by spot welding, the mesh size is 50mm × 50mm, the specific mesh size can be adjusted according to the protection area required in practice, but the mesh size is moderate, the fact that the aluminum foils of; the figure shows the structure of a four-layer steel wire protection and three-layer heat insulation reflecting screen 9.
The electron gun guard 6 is similar to the vacuum chamber inner wall guard 5 in the form of a protective net, and is different in that the protective net 10 of the electron gun guard 6 is obliquely woven as shown in fig. 5, so that the electron gun 2 can be effectively prevented from the center of electron beam welding on the basis of protection, and welding is conveniently performed as shown in fig. 1.
The protective device of the invention can be mutually assembled and fixed with parts needing protection, such as a vacuum chamber wall 8, an electron gun 2, a condenser pipe 3 and the like, and can also be independently supported outside the protective parts, and is in an independent frame structure, as shown in figures 4 and 5, a hanging lug is arranged above a protective net 10 and can be supported on the inner wall of the vacuum chamber and the outside of the electron gun in a suspension mode, and the condenser pipe protective device can be independently supported outside the condenser pipe.
The high temperature pre-heating electron beam welding protection device under vacuum environment of the invention is described below with reference to a typical workpiece welding.
As shown in figures 1-5, a protection system is arranged in a vacuum chamber 1 before a heating device 4 and a workpiece to be welded are arranged, wherein the vacuum chamber inner wall protection device 5 is arranged on an inner wall 8 of the vacuum chamber, four layers of steel wire protective nets are arranged, the size of each net is 50mm × 50mm, the distance between every two adjacent protective nets 10 is 2 mm-5 mm, an interlayer in the protective nets 10 is an aluminum foil heat insulation reflecting screen, the thickness of the aluminum foil is larger than or equal to 0.05mm, excessive radiation of heat to the inner wall 8 of the vacuum chamber is prevented, a condenser pipe protection device 7 is supported outside a condenser pipe 3, and an electron gun 2 penetrates throughAfter the protection system is installed, the workpiece to be welded and the heating device 4 are installed at corresponding positions, a vacuum chamber furnace door is closed, vacuumizing is carried out, and the vacuum degree is 1 × 10-2Heating is started after Pa, and a workpiece to be welded is heated to a required temperature T; because the aluminium foil has the reflection heat radiation function, can weaken vacuum heat radiation among the work piece heating process and to vacuum chamber inner wall, condenser pipe and electron gun radiation heat, effectively protect vacuum chamber inner wall, condenser pipe and electron gun, the aluminium foil passes through the steel wire protection network and also forms the vacuum cavity through the form of evacuation with the vacuum chamber inner wall, further plays thermal-insulated effect to vacuum chamber inner wall.
If the preheating temperature corresponding to the workpiece is increased, the heat insulation effect can be enhanced by increasing the number of layers of the protective net and the aluminum foil heat insulation reflecting screen, but attention needs to be paid to ensure the distance between the multiple layers of heat insulation screens.
The vacuum heat insulation protective layer of the protective system is preheated to 50-800 ℃ in a vacuum environment, the protective layer is not softened and does not influence the electron beam welding process, the heat damage of vacuum heat radiation to the inner wall of a vacuum chamber, an electron gun tool and a rubber and plastic switch can be effectively prevented, the heat conduction can be reduced through the steel wire mesh structure, the heat radiation reflected by the smooth surface of the aluminum foil in the vacuum environment can reduce the heat dissipation of the center of a heat source, the preheating effect in the vacuum environment is facilitated, and the engineering use requirement is met.
Claims (3)
1. The utility model provides a real empty room inside protection system for preheating electron beam welding, vacuum preheating electron beam welding set include electron gun, real empty room and preheat the heater, treat that the welding workpiece is located the vacuum chamber, still is equipped with the condenser pipe in the vacuum chamber, its characterized in that, protection system mainly comprises thermal-insulated reflecting screen and the protection network that is used for fixed thermal-insulated reflecting screen, specifically includes: an electron gun protection device, a vacuum chamber inner wall protection device and a condensation pipe protection device; the vacuum chamber inner wall protection device consists of heat insulation reflecting screens and steel wire protective nets, the heat insulation reflecting screens and the steel wire protective nets are mounted on the inner wall of the vacuum chamber to realize heat protection of the whole inner wall, the steel wire protective nets are distributed in a grid-shaped staggered manner and fix steel wires in a spot welding manner, the sizes of the grids can be adjusted according to the protection area required actually, the heat insulation reflecting screens are arranged between the steel wire protective nets as interlayers, the distance between every two adjacent protective nets is 2-5 mm, and the heat insulation reflecting screens are guaranteed to be separated from each other and not; electron gun protector adds the protective structure of thermal-insulated reflecting screen for the steel wire protection network that the slant was woven, can effectively avoid electron beam welded center on the basis of realizing the electron gun protection, conveniently implements the welding, condenser pipe protector adopts the steel wire protection network to add the structure of thermal-insulated reflecting screen, and condenser pipe protector establishes at the condenser pipe outside and does not cover the condenser pipe both ends.
2. The vacuum chamber interior shielding system for electron beam welding preheating of claim 1, wherein the heat-insulating reflecting screen is aluminum foil with a thickness of 0.05mm or more.
3. The vacuum chamber internal shield system for electron beam welding as recited in claim 1, wherein said shield assembly and said shield member are assembled and fixed to each other, and can be supported separately from each other outside said shield member in a single frame structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520721.0A CN111761196A (en) | 2020-06-10 | 2020-06-10 | Vacuum chamber internal protection system for preheating electron beam welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520721.0A CN111761196A (en) | 2020-06-10 | 2020-06-10 | Vacuum chamber internal protection system for preheating electron beam welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111761196A true CN111761196A (en) | 2020-10-13 |
Family
ID=72720443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010520721.0A Pending CN111761196A (en) | 2020-06-10 | 2020-06-10 | Vacuum chamber internal protection system for preheating electron beam welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111761196A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453674A (en) * | 2020-11-17 | 2021-03-09 | 中国航发北京航空材料研究院 | Vacuum electron beam welding equipment capable of welding under high temperature condition |
| RU2773203C1 (en) * | 2021-07-28 | 2022-05-31 | Акционерное общество "Пермский завод "Машиностроитель" | Device for protecting the walls of the vacuum chamber from spraying |
| CN114799455A (en) * | 2022-04-06 | 2022-07-29 | 中国船舶重工集团公司第七二五研究所 | Electron gun protection device for vacuum preheating electron beam welding device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039891A (en) * | 1988-08-04 | 1990-02-21 | 李芧华 | Vacuum room type insulation device |
| JPH07150647A (en) * | 1993-11-30 | 1995-06-13 | Higashi Nippon House Kk | Heat insulating material with air layer in multilayer structure |
| CN2693399Y (en) * | 2004-05-25 | 2005-04-20 | 西安松立焊接工程自动化有限责任公司 | Multifunctional vacuum brazing mechanism |
| CN2913385Y (en) * | 2006-04-18 | 2007-06-20 | 北京七星华创电子股份有限公司 | Overlength material high temperature horizontal vacuum heat treatment furnace |
| CN106903398A (en) * | 2017-04-19 | 2017-06-30 | 中国航发北京航空材料研究院 | Heat power supply welding method and its device are combined under a kind of vacuum/protective atmosphere |
| CN109514066A (en) * | 2018-10-31 | 2019-03-26 | 南京理工大学 | The device of control interlayer temperature based on electron beam fuse increasing material manufacturing |
-
2020
- 2020-06-10 CN CN202010520721.0A patent/CN111761196A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039891A (en) * | 1988-08-04 | 1990-02-21 | 李芧华 | Vacuum room type insulation device |
| JPH07150647A (en) * | 1993-11-30 | 1995-06-13 | Higashi Nippon House Kk | Heat insulating material with air layer in multilayer structure |
| CN2693399Y (en) * | 2004-05-25 | 2005-04-20 | 西安松立焊接工程自动化有限责任公司 | Multifunctional vacuum brazing mechanism |
| CN2913385Y (en) * | 2006-04-18 | 2007-06-20 | 北京七星华创电子股份有限公司 | Overlength material high temperature horizontal vacuum heat treatment furnace |
| CN106903398A (en) * | 2017-04-19 | 2017-06-30 | 中国航发北京航空材料研究院 | Heat power supply welding method and its device are combined under a kind of vacuum/protective atmosphere |
| CN109514066A (en) * | 2018-10-31 | 2019-03-26 | 南京理工大学 | The device of control interlayer temperature based on electron beam fuse increasing material manufacturing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453674A (en) * | 2020-11-17 | 2021-03-09 | 中国航发北京航空材料研究院 | Vacuum electron beam welding equipment capable of welding under high temperature condition |
| CN112453674B (en) * | 2020-11-17 | 2022-05-27 | 中国航发北京航空材料研究院 | Vacuum electron beam welding equipment capable of welding under high temperature condition |
| RU2773203C1 (en) * | 2021-07-28 | 2022-05-31 | Акционерное общество "Пермский завод "Машиностроитель" | Device for protecting the walls of the vacuum chamber from spraying |
| CN114799455A (en) * | 2022-04-06 | 2022-07-29 | 中国船舶重工集团公司第七二五研究所 | Electron gun protection device for vacuum preheating electron beam welding device |
| CN114799455B (en) * | 2022-04-06 | 2023-06-23 | 中国船舶重工集团公司第七二五研究所 | Electron gun protection device for vacuum preheating electron beam welding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111761196A (en) | Vacuum chamber internal protection system for preheating electron beam welding | |
| CN102259218B (en) | Vacuum activating welding device | |
| CN108555463B (en) | Ultra-high power laser cutting machine and heat dissipation and dust removal integrated system thereof | |
| CN106624320B (en) | Method for welding hollow flat tube parts by electron beams | |
| CN105033459B (en) | Intermetallic compound control method of steel/niobium laser welding joint | |
| CN1086161C (en) | High-frequency heating and pressurizing technology and equipment for soldering ring and planar parts made of different metals | |
| CN103203606B (en) | Method for producing multi-cavity phase change temperature-equalization plate | |
| CN106270872A (en) | A kind of vacuum induction composite brazing method | |
| CN102069290B (en) | Process for preparing Fe3Al/Al composite structure by diffusion bonding | |
| CN112846550A (en) | Back-through protective gas device and method for laser-MIG composite welding of high-strength aluminum alloy | |
| CN202719669U (en) | Solar split heater | |
| CN112475643B (en) | Welding device and welding process for reducing porosity in laser welding joint | |
| CN106695144A (en) | Welding repair method for nuclear power equipment made of low-alloy high-strength steel | |
| CN112383979B (en) | Medium-frequency heating device and method for special-shaped thick-wall end socket | |
| CN211966428U (en) | Stop gear for mechanical welding | |
| CN210855926U (en) | Hyaluronic acid sodium dehydration device | |
| CN207402234U (en) | A kind of vacuum brazing furnace that workpiece excess calories is prevented to scatter and disappear | |
| CN212945913U (en) | Energy-saving square aluminum brazing furnace body | |
| CN107941059B (en) | Heat energy recovery system | |
| CN219684365U (en) | Radiator welding device | |
| KR101406361B1 (en) | Overlay Welding Device Using Radiation | |
| CN201119040Y (en) | An industrial electromagnetic inductance heater | |
| CN211102289U (en) | Pipe tube sheet welding protection and heat preservation frock | |
| CN203679500U (en) | Special metal pipeline welding protection device | |
| CN212446386U (en) | Outdoor butt joint operation hot melt ware |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201013 |