CN106513679B - A kind of laser gain material manufacturing method suitable for band large-scale metal part - Google Patents
A kind of laser gain material manufacturing method suitable for band large-scale metal part Download PDFInfo
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- CN106513679B CN106513679B CN201611087366.2A CN201611087366A CN106513679B CN 106513679 B CN106513679 B CN 106513679B CN 201611087366 A CN201611087366 A CN 201611087366A CN 106513679 B CN106513679 B CN 106513679B
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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
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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
- B22F10/30—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]
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- 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
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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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
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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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
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- 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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Laser Beam Processing (AREA)
Abstract
A kind of laser gain material manufacturing method suitable for band large-scale metal part, step are：According to the integrally-built configuration characteristic of part and load distribution characteristics, part is divided into several sub-blocks；According to the shape and structure feature of each sub-block, several scanning areas are respectively divided out in each sub-block, is divided into web class, edge strip class, T-block class and otic placode class scanning area, then be ranked up to scanning sequency, is ranked up according to apart from most remote areas priority principle；Short side shuttle-scanning mode is used in scanning area, and ensures that the scan path width in scanning area is consistent, and completes the manufacture of whole sub-blocks；The position relationship determined when by each sub-block manufactured according to piecemeal assemble and Set and Positioning, and ensures adjacent sub-blocks seam crossing there are distortion allowances, and is positioned using deformation map mode between adjacent sub-blocks；Each sub-block to completing positioning carries out laser gain material connection, until whole sub-blocks to be connected together to and formed an entirety, part manufacture is completed.
Description
Technical field
The invention belongs to laser gain material manufacturing technology fields, 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 fusing in situ to be carried out to alloy powder by high power laser light, and make the conjunction of molten condition using alloy powder as raw material
Bronze end quickly solidifies and is deposited step by step to manufacture entity component.
The principle of laser gain material manufacturing technology is：Go out the threedimensional model of part first with Computerized three-dimensional Software for Design,
Then hierarchy slicing processing is carried out to threedimensional model in a computer, makes threedimensional model is discrete to turn to a series of two-dimentional level,
Finally using laser successively scan and successively add alloy powder, threedimensional model part is finally converted into entity component.
From the point of view of the manufacture of the part of complicated shape, laser gain material manufacturing technology has compared with traditional manufacturing technology and can not compare
Quasi- advantage can realize near-net-shape, more save material, be not necessarily to mold and special fixture, with short production cycle and efficient,
Manufactured part has excellent mechanical property, therefore, in aerospace field, is more and more frequently used for titanium alloy
The quick manufacture of part.
But due to there is the characteristics of fast hot rapid cooling, especially part base solid and sedimentary in laser gain material manufacturing process
The violent heating and cooling of the long time period of laser beam can be undergone in deposition process, and mobile molten bath can be in bottom of pond
Quick solidification shrinkage under constraint, while association non-equilibrium cycle solid-state phase changes in short-term, this can generate big and answer in inside parts
Miscellaneous thermal stress, structural stress and mechanical restraint, while with strong unstable state reciprocation and stress concentration phenomenon, directly
It is exactly that part occurs deforming and crack to connect consequence.
For band large-scale metal part, after the long-time shuttle-scanning of high energy laser beam, inside parts can also produce
Raw serious Thermal incubation effect, this will aggravate deformation and the cracking of part.Therefore, the laser gain material of band large-scale metal part manufactures matter
Amount is difficult to control always, seriously limits application of the band large-scale metal part in laser gain material manufacturing field.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of laser gain material manufacture suitable for band large-scale metal part
Method can effectively avoid part from occurring deforming and crack, while reduce the Thermal incubation effect of inside parts, effectively improve large size
The laser gain material workmanship of metal parts.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of laser suitable for band large-scale metal part
Increasing material manufacturing method, includes the following steps：
Step 1：Part piecemeal
According to the integrally-built configuration characteristic of part and load distribution characteristics, part is divided into several sub-blocks；
Step 2：Sub-block subregion
According to the shape and structure feature of each sub-block, several scanning areas are respectively divided out in each sub-block；
Step 3：Sub-block manufactures
Short side shuttle-scanning mode is used in scanning area, and ensures the scan path width phase one in scanning area
It causes, and completes the manufacture of whole sub-blocks；
Step 4：Assembling parts
The position relationship determined when by each sub-block manufactured according to piecemeal assemble and Set and Positioning, and ensures phase
There are distortion allowances for adjacent sub-block seam crossing, and are positioned using deformation map mode between adjacent sub-blocks；
Step 5：Part manufactures
Each sub-block to completing positioning carries out laser gain material connection, until whole sub-blocks are connected together and form one
A entirety, part manufacture are completed.
It after several scanning areas in sub-block have divided, needs to be ranked up scanning sequency, and farthest according to distance
Area preference principle is ranked up.
Scanning area is divided into 4 types, including web class scanning area, edge strip by the shape and structure feature based on sub-block
Class scanning area, T-block class scanning area and otic placode class scanning area, and the scanning area in arbitrary sub-block is in 4 types
One or more.
After the completion of sub-block manufacture, need to carry out heat treatment and roughing to sub-block, then ensure sub-block after carrying out flaw detection
Zero defect.
Beneficial effects of the present invention：
Compared with prior art, the present invention can effectively avoid part from occurring deforming and crack, 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-block class scanning area schematic diagram；
Fig. 5 is otic placode class scanning area schematic diagram；
Schematic diagram is offset in deformation after Fig. 6 is positioned between adjacent sub-blocks using deformation map mode；
Fig. 7 does not use the temperature distortion schematic diagram that deformation map mode positions between adjacent sub-blocks
In figure, 1-web class scanning area, 2-edge strip class scanning areas, 3-T-block class scanning areas, 4-otic placode classes
Scanning area.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
A kind of laser gain material manufacturing method suitable for band large-scale metal part includes the following steps：
Step 1：Part piecemeal
According to the integrally-built configuration characteristic of part and load distribution characteristics, part is divided into several 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 cracking；
Step 2：Sub-block subregion
According to the shape and structure feature of each sub-block, several scanning areas are respectively divided out in each sub-block；Work as sub-block
After interior several scanning areas divide, need to be ranked up scanning sequency, and according to apart from most remote areas priority principle into
Row sequence；So the Temperature Distribution of scanning process can be made more uniform, further decrease internal stress and Thermal incubation effect；
As shown in Figure 1, the scanning area for a certain sub-block divides schematic diagram, the shape and structure feature based on sub-block, scanning
Region is divided into 4 types, including web class scanning area 1, edge strip class scanning area 2, T-block class scanning area 3 and otic placode class
Scanning area 4, and the scanning area in arbitrary sub-block is one or more of 4 types；
Step 3：Sub-block manufactures
Short side shuttle-scanning mode is used in scanning area, and ensures the scan path width phase one in scanning area
It causes, and completes the manufacture of whole sub-blocks；After the completion of sub-block manufacture, need to carry out heat treatment and roughing to sub-block, then through visiting
Triage ensures sub-block zero defect after surveying；
As shown in Fig. 2, be web class scanning area schematic diagram, since the area of web class scanning area is larger, can first by
Several zonules that web class scanning area is divided into area approximation equal, each zonule carry out short side scanning respectively；
As shown in figure 3, be edge strip class scanning area schematic diagram, since edge strip class scanning area has larger length-width ratio,
Therefore short side scanning only need to be carried out in the longitudinal direction；
As shown in figure 4, being T-block class scanning area schematic diagram, since two T-type arms of T-block class scanning area are visual
For edge strip class scanning area, then only short side scanning need to be carried out respectively to two orthogonal T-type arms；
As shown in figure 5, being otic placode class scanning area schematic diagram, since otic placode class scanning area is mostly irregular shape, then
Otic placode class scanning area can be divided into several parallel edge stripe-shaped regions, then short side is carried out one by one to several edge stripe-shaped regions and is swept
It retouches；
Step 4：Assembling parts
The position relationship determined when by each sub-block manufactured according to piecemeal assemble and Set and Positioning, and ensures phase
There are distortion allowances for adjacent sub-block seam crossing, and are positioned using deformation map mode between adjacent sub-blocks；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, not used between adjacent sub-blocks
The temperature distortion schematic diagram that deformation map mode positions；As 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 by heat input can be effectively offset, the dimensional accuracy of part has been effectively ensured；
Step 5：Part manufactures
Each sub-block to completing positioning carries out laser gain material connection, until whole sub-blocks are connected together and form one
A entirety, part manufacture are completed.
Scheme in embodiment be not to limit the scope of patent protection of the present invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the claims of this case.
Claims (3)
1. a kind of laser gain material manufacturing method suitable for band large-scale metal part, it is characterised in that include the following steps：
Step 1：Part piecemeal
According to the integrally-built configuration characteristic of part and load distribution characteristics, part is divided into several sub-blocks；
Step 2：Sub-block subregion
According to the shape and structure feature of each sub-block, several scanning areas are respectively divided out in each sub-block；When in sub-block
It after several scanning areas divide, needs to be ranked up scanning sequency, and is arranged according to apart from most remote areas priority principle
Sequence；
Step 3：Sub-block manufactures
Short side shuttle-scanning mode is used in scanning area, and ensures that the scan path width in scanning area is consistent, and
Complete the manufacture of whole sub-blocks；
Step 4：Assembling parts
The position relationship determined when by each sub-block manufactured according to piecemeal assemble and Set and Positioning, and ensures adjacent son
There are distortion allowances for block seam crossing, and are positioned using deformation map mode between adjacent sub-blocks；
Step 5：Part manufactures
Each sub-block to completing positioning carries out laser gain material connection, whole up to whole sub-blocks to be connected together to and formed one
Body, part manufacture are completed.
2. a kind of laser gain material manufacturing method suitable for band large-scale metal part according to claim 1, it is characterised in that：
Scanning area is divided into 4 types, including web class scanning area, edge strip class scanning area by the shape and structure feature based on sub-block
Domain, T-block class scanning area and otic placode class scanning area, and the scanning area in arbitrary sub-block be one kind in 4 types or
It is several.
3. a kind of laser gain material manufacturing 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 to carry out heat treatment and roughing to sub-block, then ensure sub-block zero defect after carrying out flaw detection.
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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106513679A CN106513679A (en) | 2017-03-22 |
| CN106513679B true CN106513679B (en) | 2018-10-19 |
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| US11065820B2 (en) * | 2019-01-29 | 2021-07-20 | General Electric Company | Optimization approach to load balancing and minimization of build time in additive manufacturing |
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| 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 |
| 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 |
| CN115415547B (en) * | 2022-11-07 | 2023-03-24 | 北京清研智束科技有限公司 | Electron beam scanning method, apparatus, device and medium |
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