CN116604166A - Electron beam welding process method for avoiding splashing by using medium-pressure welding machine - Google Patents
Electron beam welding process method for avoiding splashing by using medium-pressure welding machine Download PDFInfo
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- CN116604166A CN116604166A CN202310748879.7A CN202310748879A CN116604166A CN 116604166 A CN116604166 A CN 116604166A CN 202310748879 A CN202310748879 A CN 202310748879A CN 116604166 A CN116604166 A CN 116604166A
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- welding
- electron beam
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- joint
- current value
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- 238000003466 welding Methods 0.000 title claims abstract description 129
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000001133 acceleration Effects 0.000 claims 1
- 238000005498 polishing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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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
- 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
- B23K15/0013—Positioning or observing workpieces, e.g. with respect to the impact; Aligning, aiming or focusing electronbeams
-
- 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
- B23K15/0026—Auxiliary equipment
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The application discloses an electron beam welding process method for avoiding splashing by using a medium-pressure welding machine, which comprises the following steps: confirming the pre-welding state of the part and selecting a medium-pressure welding machine; clamping the part to enable the welding joint to be vertical to the horizontal plane, setting a distance between the electron gun and the welding joint, and finding a focusing current value required by focusing the surface of the electron beam in a vacuumizing state; scanning and confirming the position of the welding line so as to align the electron beam with the welding joint; and welding by a positioning welding mode and a formal welding mode respectively. The application has the beneficial effects of avoiding post-welding polishing work, improving efficiency, reducing cost, keeping the original machined high-quality surface of the part after welding and achieving the optimal effect of the roughness of the runner surface.
Description
Technical Field
The application belongs to the field of electron beam welding of aero-engine parts, and particularly relates to an electron beam welding process method for avoiding splashing by using a medium-pressure welding machine.
Background
The electron beam is used for penetrating welding, splashing is an objective phenomenon which is generally recognized in the industry, particularly, when the current aviation industry uses a relatively common high-pressure welding machine for welding, a large amount of splashing is generated on the back surface of a welding line, and at present, only the welding process can be performed on the welding line, so that a boosting-level stator component of an aeroengine belongs to a variable-thickness flange plate part, and an electron beam welding process is used.
Disclosure of Invention
Therefore, the application discloses an electron beam welding process method for avoiding splashing by using a medium-pressure welding machine, so as to achieve the purposes of avoiding splashing to be attached to a part, avoiding further polishing treatment after the electron beam welding of the part, reducing quality risk, improving production efficiency and reducing manufacturing cost.
In order to achieve the above purpose, the present application adopts the following technical scheme: an electron beam welding process for avoiding spatter using a medium pressure welder, comprising: confirming the pre-welding state of the part and selecting a medium-pressure welding machine; clamping the part to enable the welding joint to be vertical to the horizontal plane, setting a distance between the electron gun and the welding joint, and finding a focusing current value required by focusing the surface of the electron beam in a vacuumizing state; scanning and confirming the position of the welding line so as to align the electron beam with the welding joint; and welding by a positioning welding mode and a formal welding mode respectively.
Further, the accelerating voltage of the medium-voltage welding machine is 60kV, the electron gun of the medium-voltage welding machine is an indirect cathode, and the using diameter of the indirect cathode is 2mm.
Further, confirming the pre-weld condition of the part includes: and assembling the parts, and confirming that the assembly clearance and the dislocation distance are smaller than or equal to 0.05mm.
Further, the electron gun and the welding joint are separated by a set distance, and the focusing current value required by focusing the surface of the electron beam is found in the vacuumizing state specifically as follows: setting the distance between 180mm and 220mm, setting the accelerating voltage to be 60kV, adjusting the focusing current value, and using the electron beam with the concentration of not more than 1mA on the surface of the welding joint to find the focusing current value required by focusing the surface of the electron beam.
Further, scanning and confirming the weld joint position so as to lead the electron beam to be aligned with the welding joint specifically comprises the following steps: the weld position was confirmed using an electron beam scan of not more than 1mA to align the electron beam with the weld joint.
Further, the welding parameters of the tack welding are specifically as follows: the accelerating voltage is 60kV, the focusing current value is between 1730mA and 1750mA, the focusing mode is lower focusing, the welding electron beam current is 5mA, the welding speed is 1000mm/min, and a scanning-free mode is adopted.
Further, the welding parameters of the formal welding are specifically as follows: the accelerating voltage is 60kV, the focusing current value is between 1790mA and 1810mA, the focusing mode is upper focusing, the welding joint is 15mA to 20mA, the welding speed is 1000mm/min, the scanning waveform is cosine wave, the phase is set to 90 degrees, the scanning amplitude is 0.8mm, and the scanning frequency is 1000Hz.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:
the existing welding method adopts a high-pressure welding machine for welding, a large amount of spatter is generated during welding, and a large amount of manpower and time are consumed for polishing.
The polishing splash can reduce the surface quality of the part and influence the performance of the engine, and the application can realize that the original machined high-quality surface of the part is maintained after welding, and the roughness of the runner surface reaches the optimal effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a booster stage stator assembly according to an embodiment of the present application;
fig. 2 is a schematic diagram illustrating placement during welding according to an embodiment of the present application.
Reference numerals in the drawings: 1. a stator case; 2. stator blades; 3. a stator inner ring; 4. and welding the joint.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in FIG. 1, the application provides a booster stage stator assembly electron beam welding process method for avoiding splashing by using a medium pressure welder, which comprises the following steps: confirming the pre-welding state of the part and selecting a medium-pressure welding machine; clamping the part to enable the welding joint 4 to be vertical to the horizontal plane, setting a distance between the electron gun and the welding joint 4, and finding a focusing current value required by focusing the surface of the electron beam in a vacuumizing state; scanning to confirm the weld position so that the electron beam is directed at the weld joint 4; and welding by a positioning welding mode and a formal welding mode respectively. The booster stage stator assembly comprises a stator casing 1, stator blades 2, a stator inner ring 3 and a welded joint 4.
The application can realize that the original machined high-quality surface of the part is kept after welding, and the roughness of the runner surface reaches the optimal effect.
Further, the accelerating voltage of the medium-voltage welding machine is 60kV, the electron gun of the medium-voltage welding machine is an indirect cathode, and the using diameter of the indirect cathode is 2mm.
Further, confirming the pre-weld condition of the part includes: the parts are assembled, and the assembly clearance and the dislocation distance are less than or equal to 0.05mm according to the confirmation after the assembly shown in figure 1. Because the state before welding has an influence on welding energy, the stator case 1, the stator blades 2 and the welding joint 4 are required to be ensured to be clean, no foreign matters are visually observed, and the cleaning cloth is dipped in acetone to clean and does not change color.
Further, as shown in fig. 2, after the welding joint 4 is ensured to be in the vertical direction by clamping the part, the distance between the electron gun and the welding joint 4 is set, and the focusing current value required by focusing the surface of the electron beam is found in the vacuumizing state specifically as follows: setting the distance between 180mm and 220mm, vacuumizing the vacuum chamber until the requirement of electron beam discharging is met, setting the accelerating voltage to be 60kV, adjusting the focusing current value, and using the electron beam with the concentration of not more than 1mA on the surface of the position of the welding joint 4 to find the focusing current value required by focusing the surface of the electron beam, wherein the focusing current value is about 1755mA.
Further, scanning confirms the weld position so that the electron beam is directed at the welded joint 4 is specifically: the weld position was confirmed using an electron beam scan of not more than 1mA to align the electron beam with the weld joint 4. Thereby ensuring that the electron beam is accurately aligned with the weld joint 4.
Further, the welding is divided into two modes of positioning welding and formal welding. The welding parameters of the positioning welding are specifically as follows: the accelerating voltage is 60kV, the focusing current value is between 1730mA and 1750mA, the focusing mode is lower focusing, the welding electron beam current is 5mA, the welding speed is 1000mm/min, and a scanning-free mode is adopted.
Further, the welding parameters of the formal welding are specifically as follows: the accelerating voltage is 60kV, the focusing current value is between 1790mA and 1810mA, the focusing mode is upper focusing, the welding joint 4 is 15mA to 20mA (the welding electron beam current is 15mA for a welding joint 4 with the thickness of 2mm, the welding joint 4 is 20mA for a welding joint 4 with the thickness of 2.5 mm), the welding speed is 1000mm/min, the scanning waveform is cosine wave, the phase is set to 90 degrees, the scanning amplitude is 0.8mm, and the scanning frequency is 1000Hz. The process can effectively control the splashing amount generated on the back surface of the welding line of the pressurizing-stage stator assembly during electron beam welding.
It should be noted that the electron beam welding machine used in the application is a medium-pressure welding machine; in the pressurizing-stage stator assembly shown in the figure, the materials of the stator case 1 and the stator blades 2 are TC4 titanium alloy, the stator case 1 and the stator blades 2 are electron beam welding connection structures, the number of welding seams of a single stator assembly is 92-128, and the thickness of the welding seams is divided into 2mm and 2.5 mm.
The above description is only a preferred technical solution of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should not depart from the spirit of the present application.
Claims (7)
1. An electron beam welding process method for avoiding splashing by using a medium pressure welding machine, which is characterized by comprising the following steps of:
confirming the pre-welding state of the part and selecting a medium-pressure welding machine;
the welding joint (4) is clamped by the part, so that the welding joint (4) is vertical to the horizontal plane, the electron gun and the welding joint (4) are separated by a set distance, and a focusing current value required by focusing the surface of the electron beam is found in a vacuumizing state;
scanning and confirming the position of the welding line so as to lead the electron beam to be aligned with the welding joint (4);
and welding by a positioning welding mode and a formal welding mode respectively.
2. The electron beam welding process method for avoiding splashing by using a medium pressure welding machine according to claim 1, wherein the acceleration voltage of the medium pressure welding machine is 60kV, the electron gun of the medium pressure welding machine is an indirectly heated cathode, and the use diameter of the indirectly heated cathode is 2mm.
3. The method of claim 1, wherein the step of confirming the pre-weld condition of the part comprises: and assembling the parts, and confirming that the assembly clearance and the dislocation distance are smaller than or equal to 0.05mm.
4. The method for electron beam welding process using a medium pressure welder to avoid splashing according to claim 1, wherein the step of spacing the electron gun from the welding joint (4) by a set distance, and the step of finding a focusing current value required for focusing the surface of the electron beam in a vacuum state is specifically:
the set distance is between 180mm and 220mm, the accelerating voltage is set to be 60kV, the focusing current value is adjusted, and the focusing current value required by focusing the surface of the electron beam is found out on the surface of the position of the welding joint (4) by using the electron beam which is not more than 1 mA.
5. An electron beam welding process using a medium pressure welder to avoid spatter according to claim 1, wherein the scanning confirms the weld position to align the electron beam to the weld joint (4) is specifically:
the weld position is confirmed using an electron beam scan of not more than 1mA to align the electron beam with the weld joint (4).
6. The method for electron beam welding process using a medium pressure welder to avoid spatter according to claim 1, wherein the welding parameters of the tack welding are specifically:
the accelerating voltage is 60kV, the focusing current value is between 1730mA and 1750mA, the focusing mode is lower focusing, the welding electron beam current is 5mA, the welding speed is 1000mm/min, and a scanning-free mode is adopted.
7. The method for electron beam welding process using a medium pressure welder to avoid spatter according to claim 1, wherein the welding parameters of the main welding are specifically:
the accelerating voltage is 60kV, the focusing current value is between 1790mA and 1810mA, the focusing mode is upper focusing, the welding joint (4) is 15mA to 20mA, the welding speed is 1000mm/min, the scanning waveform is cosine wave, the phase is set to 90 degrees, the scanning amplitude is 0.8mm, and the scanning frequency is 1000Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310748879.7A CN116604166A (en) | 2023-06-21 | 2023-06-21 | Electron beam welding process method for avoiding splashing by using medium-pressure welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310748879.7A CN116604166A (en) | 2023-06-21 | 2023-06-21 | Electron beam welding process method for avoiding splashing by using medium-pressure welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116604166A true CN116604166A (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310748879.7A Pending CN116604166A (en) | 2023-06-21 | 2023-06-21 | Electron beam welding process method for avoiding splashing by using medium-pressure welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116604166A (en) |
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2023
- 2023-06-21 CN CN202310748879.7A patent/CN116604166A/en active Pending
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