CN114749784A - Method for improving surface quality of electron beam fuse forming part - Google Patents
Method for improving surface quality of electron beam fuse forming part Download PDFInfo
- Publication number
- CN114749784A CN114749784A CN202210495047.4A CN202210495047A CN114749784A CN 114749784 A CN114749784 A CN 114749784A CN 202210495047 A CN202210495047 A CN 202210495047A CN 114749784 A CN114749784 A CN 114749784A
- Authority
- CN
- China
- Prior art keywords
- fuse
- track
- accumulation
- electron beam
- workbench
- 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
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009825 accumulation Methods 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 26
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- B23K15/0046—Welding
- B23K15/0086—Welding welding for purposes other than joining, e.g. built-up 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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0006—Electron-beam welding or cutting specially adapted for particular articles
-
- 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
Abstract
The invention discloses a method for improving the surface quality of an electron beam fuse forming part, which comprises the following steps: (1) carrying out layering processing on the three-dimensional model of the part, and planning the stacking track of each layer; (2) fixing the substrate on a workbench; (3) the workbench moves according to the planned accumulation track to accumulate the fuse on the substrate; it is characterized in that: after finishing one fuse stack, single-point fuse compensation is performed at the convergence end of the fuse stack. Compared with the prior art, the method effectively avoids the sinking of the closing end of the accumulation body, can reduce the length or the height allowance required by the structural additive forming under the condition of ensuring that the size of the part is not lost, thereby improving the material utilization rate of the forming structure, and has the advantages of simple operation and low cost.
Description
Technical Field
The invention belongs to the field of electron beam additive manufacturing, and particularly relates to a method for improving the surface quality of an electron beam fuse forming part.
Background
As shown in FIG. 1, the electron beam fuse forming (EBAM) technology is based on the principle that an electron beam with high energy density is used as a heat source to bombard the surface of metal to form a molten pool on a substrate or a previous accumulation body, a metal wire is fed from a side shaft and is heated and melted into the molten pool, and the position of the molten pool is changed along with the movement of the substrate according to a planned track (a workbench can move in the direction of X, Y, Z shaft), so that the molten metal can be gradually solidified on the planned track to form a new accumulation body, and fuse accumulation is carried out layer by layer to complete the manufacturing of metal parts.
The electron beam fusing process generates a large amount of metal vapor, which reacts with the electron beam, so that the height of the beam converging end (tail end) is significantly lower than that of other parts, the beam starting end (start end) is slightly higher than that of other parts, and the height becomes larger as the number of stacked layers increases, as shown in fig. 2 and 3.
For a thin-wall structural part formed by a single stacking track, in order to overcome the problem of sink of the converging stream end, a mode of opposite stacking tracks of adjacent layers is generally adopted, as shown in fig. 4, the converging stream end and the converging stream end of the next layer are complementary with the converging stream end and the converging stream end of the previous layer, so as to offset a part of height difference. However, this method cannot completely eliminate the tendency of uneven forming surface, the forming result is mostly that the two ends of the track are depressed and the middle is higher, and in order to ensure that the part does not have meat deficiency, the forming length or the forming height margin (as shown in fig. 5) needs to be increased, and the material consumption is high.
For the layered cross section with large size and requiring multi-pass forming, a cross section boundary contour plus internal filling mode is usually adopted, the track paths of all the tracks in the same layer are in the same direction, but the track directions of adjacent layers are opposite or form a certain included angle, as shown in fig. 6. Due to the existence of the boundary contour, the whole appearance can be ensured to be regular, the depression of the converging flow end can be compensated to a certain degree by changing the direction of the internal filling track, but a pit is still formed at the end point of each track of the last layer, and the allowance of the forming height needs to be increased to ensure that the size of the part is not lost.
Patent document CN110814467A discloses a path correction method for eliminating edge collapse of an arc additive manufacturing component, which combines a normal filling path and an edge compensation bead correction path into one manufacturing cycle to eliminate a height difference between a layer edge and a main body, but the edge compensation bead correction path is more complicated to calculate. In addition, the edge collapse in the patent is that the material shortage of the welding seam at the outermost side is caused because the adjacent welding seams of the same layer are in order to meet a certain overlapping rate, so that the height of the welding seam is reduced, the edge collapse is formed after the welding seams are accumulated layer by layer, the reason is different from the reason for forming the beam-closing end depression in the electron beam fuse forming process, and the problem of the beam-closing end depression in the electron beam fuse forming technology cannot be solved.
Disclosure of Invention
In order to overcome the defect of the sink of the beam-converging end in the existing electron beam fuse forming process, the invention provides a method for improving the surface quality of an electron beam fuse forming part, so that the material consumption can be reduced under the condition of ensuring that the size of the part is not lost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of improving the surface quality of an electron beam fuse formed part, comprising the steps of:
(1) carrying out layering processing on the three-dimensional model of the part, and planning the stacking track of each layer;
(2) fixing the substrate on a workbench;
(3) the workbench moves according to the planned accumulation track to accumulate the fuse on the substrate;
it is characterized in that: after finishing one fuse stack, single-point fuse compensation is performed at the convergence end of the fuse stack.
Preferably, the operation process of the single-point fuse compensation comprises the following steps:
(a) after the accumulation body is solidified, the workbench reversely runs according to the accumulation track of the accumulation body, so that the beam-collecting end of the accumulation body is used as a molten pool area again;
(b) starting the electron beam, feeding the wire, stopping feeding the wire after the fuse wire amount at the beam converging end reaches the compensation requirement, and closing the electron beam.
More preferably, the setting time of step (a) is 3 to 5 seconds.
More preferably, the fusing time of the step (b) is 1-2 seconds.
Preferably, 2-5 mm blank sections without fuse accumulation are reserved at the initial section and the final section of each accumulation track respectively.
Preferably, the accumulation body is a converging end which is 1-3 mm inward from the edge of the tail end.
Preferably, adjacent layers have stacking paths that are oriented in the same or opposite directions or at an angle.
Preferably, the stacking track is a linear track.
Preferably, the part is a thin-walled structural part.
Has the advantages that:
compared with the prior art, the method effectively avoids the depression of the beam converging end of the accumulation body, improves the surface quality of the electron beam fuse forming part, and can reduce the length or height allowance required by forming under the condition of ensuring that the size of the part is not lost, thereby reducing the consumption of materials and having the advantages of simple operation and low cost.
Drawings
FIG. 1 is a schematic diagram of electron beam fuse formation.
FIG. 2 is a schematic diagram of the formation of electron beam fuse single layer stacks.
FIG. 3 is a schematic diagram of the formation of electron beam fuse multilayer co-stacking.
Fig. 4 is a schematic view of the forming of a thin-walled structural part of the prior art.
Fig. 5 is a schematic view of the increased forming allowance of the existing thin-walled structural part for ensuring the size is not lost.
FIG. 6 is a schematic view of the formation of a part having a large layered cross section according to the prior art.
FIG. 7 is a schematic view of the thin-walled structural component formed according to the present invention using co-directional stacking of adjacent layer traces.
FIG. 8 is a schematic diagram of the thin-walled structural component forming process using reverse stacking of adjacent layer traces in accordance with the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
Example 1
The process of manufacturing the parts by adopting the electron beam fuse forming technology comprises the following steps:
(1) establishing a three-dimensional model of the part, carrying out layering processing on the three-dimensional model, planning the stacking tracks of all layers, selecting a single track or multiple tracks for a single layer according to the size of a layering section, adopting linear tracks as the tracks, and respectively arranging blank sections of 2-5 mm at the starting section and the ending section of each track.
(2) And selecting the materials of the substrate and the wire material according to the material of the part.
(3) The substrate was fixed on a table and evacuated.
(4) The workbench moves to the starting point of the first stacking track.
(5) And (3) moving for a certain distance (2-5 mm) along the track, and increasing the electron beam current from 0 to a set value.
(6) Feeding the wire material, keeping the size of the electron beam stable, continuously operating the workbench along the planned track, and starting to print the accumulation body.
(7) And stopping feeding the wire, reducing the electron beam current from the set value to 0, ending the printing of the accumulation body, and continuously running the workbench along the planned track for a certain distance (2-5 mm) to the terminal point.
(8) The stage is stationary at the end of the trajectory for a period of time to solidify the deposit, which is usually set to 3-5 seconds.
(9) The working platform reversely runs for 3-5 mm along the original track, so that the beam converging end of the accumulation body can be irradiated by the electron beam, namely, the accumulation body becomes a molten pool area again, and the working platform is static.
(10) And (4) increasing the electron beam current from 0 to a set value, feeding the wire material, and maintaining for 1.0-2.0 s.
(11) Stopping feeding the wire, closing the electron beam current, and completing the single-point fuse compensation of the beam converging end of the accumulation body.
(12) And (5) the workbench moves to the starting point of the next stacking track, and the steps (5) to (11) are repeated until the part is manufactured.
FIG. 7 shows a thin-wall structural part manufactured by using the same track direction of adjacent layers, and after the converging flow end of each layer is compensated by the single-point fuse wire of the invention, the actual forming result is similar to the theoretical appearance.
FIG. 8 shows a thin-walled structural part manufactured by using the track directions of adjacent layers in opposite directions, and the actual forming result of the converging flow end of each layer is similar to the theoretical shape after the converging flow end of each layer is subjected to the single-point fuse compensation of the invention.
For parts with large layered sections, multiple tracks are required in a single layer, the track directions in the same layer are the same, the track directions of adjacent layers are opposite or the same, the manufacturing process is the same, fuse wire accumulation is carried out layer by channel, and compared with the existing mode, the boundary outline can be omitted.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method of improving the surface quality of an electron beam fuse formed part, comprising the steps of:
(1) carrying out layering processing on the three-dimensional model of the part, and planning the stacking track of each layer;
(2) fixing the substrate on a workbench;
(3) the workbench moves according to the planned accumulation track to accumulate the fuse on the substrate;
the method is characterized in that: after finishing one fuse stack, single-point fuse compensation is performed at the convergence end of the fuse stack.
2. The method of claim 1, wherein: the operation process of the single-point fuse compensation comprises the following steps:
(a) after the accumulation body is solidified, the workbench reversely runs according to the accumulation track of the accumulation body, so that the beam-collecting end of the accumulation body is used as a molten pool area again;
(b) starting the electron beam, feeding the wire, stopping feeding the wire after the fuse wire amount at the beam converging end reaches the compensation requirement, and closing the electron beam.
3. The method of claim 2, wherein: the solidification time in the step (a) is 3-5 seconds.
4. The method of claim 2, wherein: the fuse time in the step (b) is 1-2 seconds.
5. The method of claim 1, wherein: and 2-5 mm blank sections which are not subjected to fuse wire accumulation are reserved in the initial section and the final section of each accumulation track respectively.
6. The method of claim 1, wherein: the accumulation body is a collecting end which is 1-3 mm inward from the edge of the tail end.
7. The method of claim 1, wherein: the stacking track directions of adjacent layers are the same or opposite or form a certain included angle.
8. The method of claim 1, wherein: the stacking track is a linear track.
9. The method of claim 1, wherein: the parts are thin-walled structural parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210495047.4A CN114749784A (en) | 2022-05-07 | 2022-05-07 | Method for improving surface quality of electron beam fuse forming part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210495047.4A CN114749784A (en) | 2022-05-07 | 2022-05-07 | Method for improving surface quality of electron beam fuse forming part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114749784A true CN114749784A (en) | 2022-07-15 |
Family
ID=82334157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210495047.4A Pending CN114749784A (en) | 2022-05-07 | 2022-05-07 | Method for improving surface quality of electron beam fuse forming part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114749784A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213907A (en) * | 2023-05-09 | 2023-06-06 | 中国航空制造技术研究院 | Method for improving forming precision of narrow rib structure in manufacturing of electron beam fuse |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764889A (en) * | 2012-07-13 | 2012-11-07 | 中国航空工业集团公司北京航空制造工程研究所 | Electron beam synchronous powder feeding and quick forming method |
| US20150209910A1 (en) * | 2014-01-24 | 2015-07-30 | Lincoln Global, Inc. | Method And System For Additive Manufacturing Of Cooling Passages Using High Energy Source |
| JP2016190255A (en) * | 2015-03-31 | 2016-11-10 | 株式会社デンソー | Joined body, joining method and joining device |
| CN109514067A (en) * | 2018-10-31 | 2019-03-26 | 南京理工大学 | Increase the high-intensitive TA18 titanium alloy member preparation method of material based on electron beam fuse |
| JP6676220B1 (en) * | 2018-10-24 | 2020-04-08 | 三菱電機株式会社 | Additional manufacturing equipment and numerical control equipment |
| CN112605517A (en) * | 2020-12-14 | 2021-04-06 | 西安航天动力机械有限公司 | Method for avoiding arc starting and closing defects of longitudinal seam electron beam welding |
| CN113084322A (en) * | 2021-05-07 | 2021-07-09 | 上海理工大学 | Fuse wire additive manufacturing device and method for magnesium alloy structural part |
| CN113118606A (en) * | 2021-03-29 | 2021-07-16 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Electron beam fuse material additive manufacturing method for large titanium-aluminum alloy component |
| CN113458576A (en) * | 2021-07-12 | 2021-10-01 | 宁波江丰电子材料股份有限公司 | Electron beam welding method of target assembly and target assembly |
-
2022
- 2022-05-07 CN CN202210495047.4A patent/CN114749784A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764889A (en) * | 2012-07-13 | 2012-11-07 | 中国航空工业集团公司北京航空制造工程研究所 | Electron beam synchronous powder feeding and quick forming method |
| US20150209910A1 (en) * | 2014-01-24 | 2015-07-30 | Lincoln Global, Inc. | Method And System For Additive Manufacturing Of Cooling Passages Using High Energy Source |
| JP2016190255A (en) * | 2015-03-31 | 2016-11-10 | 株式会社デンソー | Joined body, joining method and joining device |
| JP6676220B1 (en) * | 2018-10-24 | 2020-04-08 | 三菱電機株式会社 | Additional manufacturing equipment and numerical control equipment |
| CN109514067A (en) * | 2018-10-31 | 2019-03-26 | 南京理工大学 | Increase the high-intensitive TA18 titanium alloy member preparation method of material based on electron beam fuse |
| CN112605517A (en) * | 2020-12-14 | 2021-04-06 | 西安航天动力机械有限公司 | Method for avoiding arc starting and closing defects of longitudinal seam electron beam welding |
| CN113118606A (en) * | 2021-03-29 | 2021-07-16 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Electron beam fuse material additive manufacturing method for large titanium-aluminum alloy component |
| CN113084322A (en) * | 2021-05-07 | 2021-07-09 | 上海理工大学 | Fuse wire additive manufacturing device and method for magnesium alloy structural part |
| CN113458576A (en) * | 2021-07-12 | 2021-10-01 | 宁波江丰电子材料股份有限公司 | Electron beam welding method of target assembly and target assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213907A (en) * | 2023-05-09 | 2023-06-06 | 中国航空制造技术研究院 | Method for improving forming precision of narrow rib structure in manufacturing of electron beam fuse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106238876B (en) | Non-close thin-walled workpiece GTAW double synchronous silk filling increasing material manufacturing method | |
| CN106216862B (en) | A kind of composite manufacturing method and device subtracting material based on electric arc increasing material and high energy beam current | |
| CN104001915B (en) | A kind of high energy beam increases material and manufactures equipment and the control method thereof of large scale metallic element | |
| CN108161229B (en) | A kind of method of silk filling formula increasing material manufacturing entity class aluminium alloy structure | |
| CN105252119B (en) | Based on gas metal-arc welding and the metal of digital control processing welding 3D printing method | |
| US9302338B2 (en) | Method for manufacturing metal parts and molds and micro-roller used therefor | |
| CN103008895A (en) | Narrow gap multi-pass laser welding method for thick plate | |
| CN114749784A (en) | Method for improving surface quality of electron beam fuse forming part | |
| WO2022100396A1 (en) | Formed part having inclined surface and forming method therefor | |
| CN106392270A (en) | Method for electric-arc additive manufacturing of aluminum alloy multi-layer single-pass closed structural member | |
| US11554438B2 (en) | Method and apparatus for manufacturing layered model | |
| CN108907189A (en) | A kind of more material molding machines and method based on metal 3D printing | |
| CN106825859A (en) | A kind of aluminum alloy junction component multilayer two pass electric arc increasing material manufacturing method | |
| CN106141373A (en) | The electric arc 3D printing device of aluminum alloy junction component and Method of printing | |
| CN104668563A (en) | High-energy beam additive manufacturing method and equipment with high powder raw material utilization rate | |
| WO2022100397A1 (en) | Forming part having cantilever structure and forming method therefor | |
| CN102116933A (en) | Laser scanning method for selective laser firing | |
| CN107790866A (en) | Bimetallic electron beam fuse increasing material manufacturing method | |
| CN109128437A (en) | Crossedpath metal component GMA increasing material manufacturing method based on current sense | |
| CN109262110A (en) | A kind of metal arc increasing material manufacturing method | |
| JP2010131616A (en) | Tandem rock welding method | |
| CN110899905B (en) | Correction method for polygonal member sharp angle path based on arc additive manufacturing | |
| CN108188606B (en) | Part manufacturing equipment and method combining laser cutting and electromagnetic welding | |
| CN103273200A (en) | Laser cladding restoring method for die steel | |
| JP7327995B2 (en) | LAMINATED PRODUCT MANUFACTURING METHOD AND LAMINATED MOLDED PRODUCT |
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 |