CN106513679A - Laser additive manufacturing method applied to large-sized metal part - Google Patents
Laser additive manufacturing method applied to large-sized metal part Download PDFInfo
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- CN106513679A CN106513679A CN201611087366.2A CN201611087366A CN106513679A CN 106513679 A CN106513679 A CN 106513679A CN 201611087366 A CN201611087366 A CN 201611087366A CN 106513679 A CN106513679 A CN 106513679A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a laser additive manufacturing method applied to a large-sized metal part. The laser additive manufacturing method comprises the following steps: according to the configuration characteristics and load distribution characteristics of the integral structure of the part, dividing the part into a plurality of sub-blocks; according to the shape structure characteristics of all the sub-blocks, separately dividing the sub-blocks into a plurality of scanning areas: wed plate scanning areas, edge strip scanning areas, T-shaped block scanning areas and ear plate scanning areas, and then setting the scanning sequence according to the principle that priority is given to the farthest scanning area; adopting a short-edge reciprocating scanning mode in the scanning areas, guaranteeing the consistent widths of scanning paths in the scanning areas, and completing the manufacturing of all the sub-blocks; assembling, clamping and positioning the manufactured sub-blocks according to the position relation determined when the part is divided into the sub-blocks, guaranteeing that deformation allowance is left at the seam between two adjacent sub-blocks, and adopting a deformation mapping mode for positioning between two adjacent sub-blocks; and subjecting all the positioned sub-blocks to laser additive connection till all the sub-blocks are connected together to form a whole, thereby completing the manufacturing of the part.
Description
Technical field
The invention belongs to laser gain material manufacturing technology field, more particularly to a kind of laser suitable for band large-scale metal part
Increasing material manufacturing method.
Background technology
(Laser Additive Manufacturing, abbreviation LAM, are commonly called as 3D printing skill to laser gain material manufacturing technology
Art), it is, with alloy powder as raw material, fusing in situ to be carried out by high power laser light to alloy powder, and makes the conjunction of molten condition
Bronze end rapid solidification simultaneously deposits to manufacture entity component step by step.
The principle of laser gain material manufacturing technology is：Go out the threedimensional model of part first with Computerized three-dimensional software design,
Then hierarchy slicing process is carried out to threedimensional model in a computer, makes that threedimensional model is discrete to turn to a series of two-dimentional aspect,
Finally successively scanned using laser and successively added alloy powder, most threedimensional model part is converted into entity component at last.
From the point of view of the part manufacture of complicated shape, laser gain material manufacturing technology has compared with traditional manufacturing technology and cannot compare
The advantage of plan, its achievable near-net-shape, more saves material, without the need for mould and special fixture, with short production cycle and efficiency high,
Manufactured part has excellent mechanical property, therefore, in aerospace field, more and more frequently it is used for titanium alloy
The quick manufacture of part.
But, the characteristics of due to there is fast hot rapid cooling in laser gain material manufacture process, particularly part base solid and sedimentary
The violent heating and cooling of the long time period of laser beam can be experienced in deposition process, and mobile molten bath can be in bottom of pond
The lower rapid solidification of constraint shrinks, at the same can association non-equilibrium circulation solid-state phase changes in short-term, this can produce big in inside parts and answer
Miscellaneous thermal stress, structural stress and mechanical restraint, while with strong unstable state reciprocal action and stress concentration phenomenon, directly
It is exactly that part deformation occurs and ftractures to connect consequence.
For band large-scale metal part, after the long-time shuttle-scanning of high energy laser beam, inside parts can also be produced
The serious Thermal incubation effect of life, this will aggravate deformation and the cracking of part.Therefore, the laser gain material manufacture matter of band large-scale metal part
Amount is difficult to control always, seriously limits application of the band large-scale metal part in laser gain material manufacture field.
The content of the invention
For the problem that prior art is present, the present invention provides a kind of laser gain material suitable for band large-scale metal part and manufactures
Method, can be prevented effectively from part and deformation occur and ftracture, while reducing the Thermal incubation effect of inside parts, effectively improve large-scale
The laser gain material workmanship of metal parts.
To achieve these goals, the present invention is adopted the following technical scheme that：A kind of laser suitable for band large-scale metal part
Increasing material manufacturing method, comprises the steps：
Step one：Part piecemeal
According to the integrally-built configuration characteristic of part and load distribution characteristicss, part is divided into into some sub-blocks；
Step 2：Sub-block subregion
According to the shape and structure feature of each sub-block, some scanning areas are respectively divided out in each sub-block；
Step 3：Sub-block is manufactured
Minor face shuttle-scanning mode is adopted in scanning area, and ensures the scanning pattern width phase one in scanning area
Cause, and complete the manufacture of whole sub-blocks；
Step 4：Assembling parts
Each sub-block for having manufactured is carried out assembling according to defined location relation during piecemeal and Set and Positioning, and ensures phase
Adjacent sub-block seam crossing is left；
Step 5：Part is manufactured
Laser gain material connection is carried out to completing each sub-block for positioning, until whole sub-blocks are connected together and one is formed
Individual entirety, part manufacture are completed.
After some scanning areas in sub-block have been divided, need to be ranked up scanning sequency, and it is farthest according to distance
Area preference principle is ranked up.
Based on the shape and structure feature of sub-block, scanning area is divided into into 4 types, including web class scanning area, edge strip
During scanning area in class scanning area, T-shaped piece of class scanning area and otic placode class scanning area, and any sub-block is 4 types
One or more.
After the completion of sub-block manufacture, need heat treatment and roughing to be carried out to sub-block, then sub-block is guaranteed Jing after carrying out flaw detection
Zero defect.
Beneficial effects of the present invention：
The present invention compared with prior art, can be prevented effectively from part and deformation occurs and ftracture, while reducing inside parts
Thermal incubation effect, effectively improve the laser gain material workmanship of band large-scale metal part.
Description of the drawings
Fig. 1 is that the scanning area of sub-block in embodiment divides schematic diagram；
Fig. 2 is web class scanning area schematic diagram；
Fig. 3 is edge strip class scanning area schematic diagram；
Fig. 4 is T-shaped piece of class scanning area schematic diagram；
Fig. 5 is otic placode class scanning area schematic diagram；
Fig. 6 is that schematic diagram is offset in the deformation after being positioned using deformation map mode between adjacent sub-blocks；
Fig. 7 is to be provided without the temperature distortion schematic diagram that deformation map mode is positioned between adjacent sub-blocks
In figure, 1 web class scanning area, 2 edge strip class scanning areas, 3 T-shaped pieces of class scanning areas, 4 otic placode classes
Scanning area.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of laser gain material manufacture method suitable for band large-scale metal part, comprises the steps：
Step one：Part piecemeal
According to the integrally-built configuration characteristic of part and load distribution characteristicss, part is divided into into some sub-blocks；By right
Part carries out piecemeal, can effectively reduce the Thermal incubation effect during post laser increasing material manufacturing, and then reduce internal stress, effectively
Avoid the appearance for deforming and ftractureing；
Step 2：Sub-block subregion
According to the shape and structure feature of each sub-block, some scanning areas are respectively divided out in each sub-block；Work as sub-block
After interior some scanning areas are divided, need to be ranked up scanning sequency, and according to entering apart from most remote areas priority principle
Row sequence；Can so make the Temperature Distribution of scanning process more uniform, further reduce internal stress and Thermal incubation effect；
As shown in figure 1, the scanning area for a certain sub-block divides schematic diagram, based on the shape and structure feature of sub-block, scan
Region is divided into 4 types, including web class scanning area 1, edge strip class scanning area 2, T-shaped piece of class scanning area 3 and otic placode class
Scanning area 4, and the scanning area arbitrarily in sub-block is one or more in 4 types；
Step 3：Sub-block is manufactured
Minor face shuttle-scanning mode is adopted in scanning area, and ensures the scanning pattern width phase one in scanning area
Cause, and complete the manufacture of whole sub-blocks；After the completion of sub-block manufacture, need to carry out sub-block heat treatment and roughing, then Jing is visited
Triage guarantees sub-block zero defect after surveying；
As shown in Fig. 2 be web class scanning area schematic diagram, due to the area of web class scanning area it is larger, can first by
Web class scanning area is divided into the equal some zonules of area approximation, each zonule to carry out minor face scanning respectively；
As shown in figure 3, be edge strip class scanning area schematic diagram, as edge strip class scanning area has larger length-width ratio,
Therefore minor face scanning only need to be carried out in the longitudinal direction；
As shown in figure 4, be T-shaped piece of class scanning area schematic diagram, due to two T-shaped arms of T-shaped piece of class scanning area it is visual
For edge strip class scanning area, then only need to T-shaped arm orthogonal to two carry out minor face scanning respectively；
As shown in figure 5, be otic placode class scanning area schematic diagram, due to otic placode class scanning area it is mostly irregularly shaped, then
Otic placode class scanning area can be divided into some parallel edge stripe-shaped regions, then minor face is carried out one by one to some edge stripe-shaped regions and be swept
Retouch；
Step 4：Assembling parts
Each sub-block for having manufactured is carried out assembling according to defined location relation during piecemeal and Set and Positioning, and ensures phase
Adjacent sub-block seam crossing is left；As shown in fig. 6, being adjacent
Schematic diagram is offset in deformation after being positioned using deformation map mode between sub-block；As shown in fig. 7, to be provided without between adjacent sub-blocks
The temperature distortion schematic diagram that deformation map mode is positioned；It can be seen that, after being positioned using deformation map mode between adjacent sub-blocks,
When carrying out laser gain material connection, the thermal deformation caused due to heat input can be effectively offset, the dimensional accuracy of part has been effectively ensured；
Step 5：Part is manufactured
Laser gain material connection is carried out to completing each sub-block for positioning, until whole sub-blocks are connected together and one is formed
Individual entirety, part manufacture are completed.
Scheme in embodiment being not used to limits the scope of patent protection of the present invention, it is all without departing from carried out by the present invention etc.
Effect is implemented or is changed, and is both contained in the scope of the claims of this case.
Claims (4)
1. a kind of laser gain material manufacture method suitable for band large-scale metal part, it is characterised in that comprise the steps：
Step one：Part piecemeal
According to the integrally-built configuration characteristic of part and load distribution characteristicss, part is divided into into some sub-blocks；
Step 2：Sub-block subregion
According to the shape and structure feature of each sub-block, some scanning areas are respectively divided out in each sub-block；
Step 3：Sub-block is manufactured
Minor face shuttle-scanning mode is adopted in scanning area, and ensures that the scanning pattern width in scanning area is consistent, and
Complete the manufacture of whole sub-blocks；
Step 4：Assembling parts
Each sub-block for having manufactured is carried out assembling according to defined location relation during piecemeal and Set and Positioning, and ensures adjacent son
Block seam crossing is left；
Step 5：Part is manufactured
To complete position each sub-block carry out laser gain material connection, until by whole sub-blocks connect together and formed one it is whole
Body, part manufacture are completed.
2. a kind of laser gain material manufacture method suitable for band large-scale metal part according to claim 1, it is characterised in that：
After some scanning areas in sub-block have been divided, need to be ranked up scanning sequency, and according to preferential apart from most remote areas
Principle is ranked up.
3. a kind of laser gain material manufacture method suitable for band large-scale metal part according to claim 1, it is characterised in that：
Based on the shape and structure feature of sub-block, scanning area is divided into into 4 types, including web class scanning area, edge strip class scanning area
Domain, T-shaped piece of class scanning area and otic placode class scanning area, and the scanning area arbitrarily in sub-block be one kind in 4 types or
It is several.
4. a kind of laser gain material manufacture method suitable for band large-scale metal part according to claim 1, it is characterised in that：
After the completion of sub-block manufacture, need heat treatment and roughing to be carried out to sub-block, then sub-block zero defect is guaranteed Jing after carrying out flaw detection.
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| CN201611087366.2A CN106513679B (en) | 2016-11-30 | 2016-11-30 | A kind of laser gain material manufacturing method suitable for band large-scale metal part |
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| CN201611087366.2A CN106513679B (en) | 2016-11-30 | 2016-11-30 | A kind of laser gain material manufacturing method suitable for band large-scale metal part |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671289A (en) * | 2017-11-01 | 2018-02-09 | 南京航空航天大学 | A kind of process control method of the rare earth modified enhancing aluminium alloy laser 3D printing of low melting loss of elements |
| CN108161000A (en) * | 2017-11-24 | 2018-06-15 | 北京航空航天大学 | A kind of large complicated metal component increases material and machining joint preparation process |
| CN109128169A (en) * | 2018-10-16 | 2019-01-04 | 北京锐海三维科技有限公司 | A kind of large size high-performance metal part Direct Laser Fabrication Technology |
| CN109128168A (en) * | 2018-10-16 | 2019-01-04 | 沈阳航空航天大学 | A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature |
| CN109365816A (en) * | 2018-12-24 | 2019-02-22 | 天津镭明激光科技有限公司 | A kind of the increasing material manufacturing tooling and manufacturing process of large-scale part |
| CN110340358A (en) * | 2019-07-09 | 2019-10-18 | 南京中科煜宸激光技术有限公司 | The method of increasing material manufacturing process parameter gradients regulation |
| CN110523981A (en) * | 2019-08-23 | 2019-12-03 | 广东省新材料研究所 | The 3D printing method of more performance composite constructions |
| CN110603115A (en) * | 2017-04-27 | 2019-12-20 | 株式会社神户制钢所 | Method for joining laminated molded parts, structure, and laminated molded part |
| CN111761058A (en) * | 2020-05-25 | 2020-10-13 | 沈阳精合数控科技开发有限公司 | Sectional forming method and system for laser deposition manufacturing technology and terminal equipment |
| CN113508027A (en) * | 2019-01-29 | 2021-10-15 | 通用电气公司 | Optimization method for load balancing and build time minimization in additive manufacturing |
| CN114734055A (en) * | 2022-01-20 | 2022-07-12 | 航发优材(镇江)增材制造有限公司 | Laser metal deposition preparation method for boss structure of engine diffuser |
| CN115319116A (en) * | 2022-07-20 | 2022-11-11 | 成都飞机工业（集团）有限责任公司 | Cross-configuration part laser powder feeding 3D printing forming method |
| CN115415547A (en) * | 2022-11-07 | 2022-12-02 | 北京清研智束科技有限公司 | Electron beam scanning method, apparatus, device and medium |
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| CN107671289A (en) * | 2017-11-01 | 2018-02-09 | 南京航空航天大学 | A kind of process control method of the rare earth modified enhancing aluminium alloy laser 3D printing of low melting loss of elements |
| CN108161000A (en) * | 2017-11-24 | 2018-06-15 | 北京航空航天大学 | A kind of large complicated metal component increases material and machining joint preparation process |
| CN109128169A (en) * | 2018-10-16 | 2019-01-04 | 北京锐海三维科技有限公司 | A kind of large size high-performance metal part Direct Laser Fabrication Technology |
| CN109128168A (en) * | 2018-10-16 | 2019-01-04 | 沈阳航空航天大学 | A kind of synchronous powder feeding system increasing material manufacturing Process Planning Method based on structure feature |
| CN109365816A (en) * | 2018-12-24 | 2019-02-22 | 天津镭明激光科技有限公司 | A kind of the increasing material manufacturing tooling and manufacturing process of large-scale part |
| CN113508027B (en) * | 2019-01-29 | 2023-07-21 | 通用电气公司 | Optimization method for load balancing and construction time minimization in additive manufacturing |
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| CN110340358A (en) * | 2019-07-09 | 2019-10-18 | 南京中科煜宸激光技术有限公司 | The method of increasing material manufacturing process parameter gradients regulation |
| CN110340358B (en) * | 2019-07-09 | 2020-02-18 | 南京中科煜宸激光技术有限公司 | Method for gradient regulation of process parameters in additive manufacturing process |
| CN110523981A (en) * | 2019-08-23 | 2019-12-03 | 广东省新材料研究所 | The 3D printing method of more performance composite constructions |
| CN111761058A (en) * | 2020-05-25 | 2020-10-13 | 沈阳精合数控科技开发有限公司 | Sectional forming method and system for laser deposition manufacturing technology and terminal equipment |
| CN114734055B (en) * | 2022-01-20 | 2023-07-11 | 航发优材(镇江)增材制造有限公司 | Laser metal deposition preparation method for boss structure of engine diffuser |
| CN114734055A (en) * | 2022-01-20 | 2022-07-12 | 航发优材(镇江)增材制造有限公司 | Laser metal deposition preparation method for boss structure of engine diffuser |
| CN115319116A (en) * | 2022-07-20 | 2022-11-11 | 成都飞机工业（集团）有限责任公司 | Cross-configuration part laser powder feeding 3D printing forming method |
| CN115319116B (en) * | 2022-07-20 | 2024-01-12 | 成都飞机工业（集团）有限责任公司 | Cross-configuration part laser powder feeding 3D printing forming method |
| CN115415547A (en) * | 2022-11-07 | 2022-12-02 | 北京清研智束科技有限公司 | Electron beam scanning method, apparatus, device and medium |
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| CN106513679B (en) | 2018-10-19 |
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