CN105665704A - Metal laser selective melting method - Google Patents
Metal laser selective melting method Download PDFInfo
- Publication number
- CN105665704A CN105665704A CN201610141354.7A CN201610141354A CN105665704A CN 105665704 A CN105665704 A CN 105665704A CN 201610141354 A CN201610141354 A CN 201610141354A CN 105665704 A CN105665704 A CN 105665704A
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- Prior art keywords
- laser
- metal
- scanning
- metal dust
- melting method
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- 239000002184 metal Substances 0.000 title claims abstract description 90
- 238000002844 melting Methods 0.000 title claims abstract description 32
- 230000008018 melting Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims description 45
- 230000004927 fusion Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract 2
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- VYMDGNCVAMGZFE-UHFFFAOYSA-N phenylbutazonum Chemical group O=C1C(CCCC)C(=O)N(C=2C=CC=CC=2)N1C1=CC=CC=C1 VYMDGNCVAMGZFE-UHFFFAOYSA-N 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- 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
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
- B22F12/45—Two or more
-
- 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
Abstract
The invention provides a metal laser selective melting method. The metal laser selective melting method is characterized in that two kinds of lasers with different powers are adopted for conducting laser melting on metal powder zones needling to be melted; during melting, the lasers with the low power firstly conduct scanning on outline boundaries of the metal powder zones; then the lasers with the high power conduct scanning on internal zones of the metal powder zones; and during scanning, the thickness of a metal powder layer obtained by scanning with the lasers with the high power one time is integral multiples of the thickness of the metal powder layer obtained by scanning with the lasers with the low power one time. According to the metal laser selective melting method, the efficiency of the laser molding process is improved, and meanwhile, the surface quality of a metal part is guaranteed; and in other words, while the stability and the molding quality of the overall process are guaranteed, the building speed of metal laser selective melting equipment is improved as a whole.
Description
Technical field
The present invention relates to metal laser selective melting Rapid Prototyping technique field, particularly relate to a kind of metal laser selective melting method.
Background technology
In the melting process process of selective laser, after metal dust is paved, laser press specified path and melted, after metal powder material cools down, just form final metal solid entity. Under normal circumstances, selective laser is melted equipment and is all utilized single constant power laser beam melts metal dust, and whole technical process mainly experiences " paving powder-laser fusion powder-metal freezing-spread next layer of powder-laser fusion powder ". In this process, the construction speed of equipment depends primarily on the paving powder speed of equipment and laser melts the volume of powder within the unit interval. When spreading powder speed and being fixing, the speed improving laser fusion powder is to improve the important channel of selective laser melting unit forming speed. When laser power is more big, the effective light spot diameter that it is formed on effective focal plane is more big, it is possible to the powder thickness of fusing is also thicker, and this can improve selective laser melting unit forming speed largely. If but only melt metal dust with high power laser, the surface of metal parts can be rough, and metal surface quality will decline to a great extent. Low power laser then can the good part of profiled surface quality.
Accordingly, it would be desirable to a kind of metal laser selective melting method, it can under the premise improving selective laser melting unit forming speed, it is ensured that part forming surface fine.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of metal laser selective melting method, easily makes part forming shaggy problem when being used for solving to improve in prior art forming speed.
For achieving the above object and other relevant purposes, the present invention provides a kind of metal laser selective melting method, described metal laser selective melting method adopts the laser of two kinds of power that vary in size that required molten metal powder zone is carried out laser fusion, during fusing, the profile border in described metal dust district is scanned by first lower powered laser, then by high-power laser, the interior zone in described metal dust district is scanned again, and high-power laser scanning metal dust thickness once is the integral multiple of lower powered laser scanning metal dust thickness once during scanning.
Preferably, described lower powered laser adopts circular scanning path that the profile border in described metal dust district is scanned.
Preferably, described high-power laser scanning adopts bending path that the interior zone in described metal dust district is scanned, described bending path by a plurality of be parallel to each other and head and the tail alignment and be connected part of path constitute, all part of paths are covered with the interior zone in whole described metal dust district.
Preferably, described high-power laser scanning time produced laser facula more than described lower powered laser scanning time produced laser facula.
Preferably, described lower powered laser scanning metal dust thickness once is the standard thickness that metal dust spreads powder every time.
As mentioned above, the metal laser selective melting method of the present invention, have the advantages that metal dust is melted by the laser adopting two kinds of different capacities, utilize lower powered laser that the profile border of required molten metal powder zone is scanned, and adopt high-power laser that the interior zone of required molten metal powder zone is scanned, realize the interior zone in metal dust district is quickly scanned by high-power laser, and by lower powered laser, profile boundary scan reaches to guarantee the surface fine of formation of parts, therefore, the present invention had both improve the efficiency of laser forming process, ensure that the surface quality of Prototyping Metal Parts simultaneously, it is to say, while ensureing whole technology stability and forming quality, improve the construction speed of metal laser selective melting equipment on the whole.
Accompanying drawing explanation
Fig. 1 is shown as the metal laser selective melting method of present invention scanning schematic diagram in X/Y plane.
Fig. 2 is shown as the metal laser selective melting method of present invention scanning schematic diagram in ZX plane.
Element numbers explanation
1 lower powered laser beam scan path
2 high-power laser beam scan paths
3 second hot spots
4 first hot spots
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art the content disclosed by this specification can understand other advantages and effect of the present invention easily.
Refer to Fig. 1 to Fig. 2. Notice, the structure of this specification institute accompanying drawings depicted, ratio, size etc., all only in order to coordinate the disclosed content of description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of the present invention, therefore do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, under not affecting effect that the present invention can be generated by and the purpose that can reach, all should still drop in the scope that disclosed technology contents can be contained. Simultaneously, in this specification cited as " on ", D score, "left", "right", " centre " and " one " etc. term, it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, the present invention provides a kind of metal laser selective melting method, described metal laser selective melting method adopts the laser of two kinds of power that vary in size that required molten metal powder zone is carried out laser fusion, during fusing, the profile border in described metal dust district is scanned by first lower powered laser, then by high-power laser, the interior zone in described metal dust district is scanned again, see lower powered laser beam scan path 1 in Fig. 1, high-power laser beam scan path 2, and high-power laser scanning metal dust thickness once is the integral multiple of lower powered laser scanning metal dust thickness once during scanning.The present invention adopts the laser of two kinds of different capacities that metal dust district is carried out laser fusion, and lower powered laser only scans the profile border in metal dust district, high-power laser extremely scans the interior zone in metal dust district, and scanning times also differs, after lower powered laser scanning repeatedly, high-power laser scanning once, and both scanning metal dust thickness become integral multiple, so both accelerate the speed of laser forming, also ensure that becoming more meticulous of formation of parts surface.
Adopt the metal laser selective melting method of the present invention, when required molten metal powder area is determined, first lower powered laser by melting the powder on metal dust region contour border along lower powered laser beam scan path, then melted the powder in metal dust intra-zone region by high-power laser along high-power laser beam scan path 2.
As it is shown in figure 1, lower powered laser beam scan path 1 is particularly as follows: lower powered laser adopts circular scanning path that the profile border in metal dust district is scanned.
As shown in Figure 1, high-power laser beam scan path 2 is particularly as follows: high-power laser scanning adopts bending path that the interior zone in metal dust district is scanned, bending path by a plurality of be parallel to each other and head and the tail alignment and be connected part of path constitute, all part of paths are covered with the interior zone in whole metal dust district. Because the powder layer thickness that low power laser is fusible is less, the powder layer thickness that high power laser light is melted is bigger, so, in actual scanning process, low power laser first completes low power laser scanning pattern 1, then paving second layer metal powder, and low power laser completes low power laser scanning pattern 1 again, in the middle of now, non-scanning area powder thickness reaches high power laser light scanning requirement, and high power laser light completes the scanning of zone line by high power laser light scanning pattern 2. Namely after low power laser scanning multilamellar contour area, high power laser light run-down zone line.
As in figure 2 it is shown, above-mentioned high-power laser when scanning produced laser facula (shown in the first hot spot 4 in Fig. 2) more than lower powered laser produced laser facula (shown in second hot spot 3 in Fig. 2) when scanning.
For better when improving forming speed, it is ensured that forming quality, above-mentioned lower powered laser scanning metal dust thickness once is the standard thickness that metal dust spreads powder every time. As, it is d that metal dust spreads powder thickness every time, then lower powered laser scanning metal dust thickness once is also d, and the metal dust thickness that high-power laser scanning is once is Kd, and K is integer; That is when laser scanning, after lower powered laser scanning K time, high-power laser scanning once, then lower powered laser scanning K time again, high-power laser scanning once, until all having scanned part forming.
In sum, the metal laser selective melting method of the present invention, metal dust district is carried out laser fusion by the laser adopting two kinds of different capacities, and lower powered laser only scans the profile border in metal dust district, high-power laser extremely scans the interior zone in metal dust district, and scanning times also differs, after lower powered laser scanning repeatedly, high-power laser scanning is once, and both metal dust thickness of scanning become integral multiple, so both accelerate the speed of laser forming, also ensure that becoming more meticulous of formation of parts surface. So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment is illustrative principles of the invention and effect thereof only, not for the restriction present invention.Above-described embodiment all under the spirit and category of the present invention, can be modified or change by any those skilled in the art. Therefore, art has usually intellectual such as modifying without departing from all equivalences completed under disclosed spirit and technological thought or change, must be contained by the claim of the present invention.
Claims (5)
1. a metal laser selective melting method, it is characterized in that, described metal laser selective melting method adopts the laser of two kinds of power that vary in size that required molten metal powder zone is carried out laser fusion, during fusing, the profile border in described metal dust district is scanned by first lower powered laser, then by high-power laser, the interior zone in described metal dust district is scanned again, and during scanning, high-power laser scanning metal dust thickness once is the integral multiple of lower powered laser scanning metal dust thickness once.
2. metal laser selective melting method according to claim 1, it is characterised in that: described lower powered laser adopts circular scanning path that the profile border in described metal dust district is scanned.
3. metal laser selective melting method according to claim 1, it is characterized in that: described high-power laser scanning adopts bending path that the interior zone in described metal dust district is scanned, described bending path by a plurality of be parallel to each other and head and the tail alignment and be connected part of path constitute, all part of paths are covered with the interior zone in whole described metal dust district.
4. metal laser selective melting method according to claim 1, it is characterised in that: described high-power laser scanning time produced laser facula more than described lower powered laser scanning time produced laser facula.
5. metal laser selective melting method according to claim 1, it is characterised in that: described lower powered laser scanning metal dust thickness once is the standard thickness that metal dust spreads powder every time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610141354.7A CN105665704A (en) | 2016-03-11 | 2016-03-11 | Metal laser selective melting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610141354.7A CN105665704A (en) | 2016-03-11 | 2016-03-11 | Metal laser selective melting method |
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| Publication Number | Publication Date |
|---|---|
| CN105665704A true CN105665704A (en) | 2016-06-15 |
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| CN201610141354.7A Pending CN105665704A (en) | 2016-03-11 | 2016-03-11 | Metal laser selective melting method |
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| CN (1) | CN105665704A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041079A (en) * | 2016-07-20 | 2016-10-26 | 北京隆源自动成型***有限公司 | Selective laser melting forming operation method |
| CN106426907A (en) * | 2016-09-20 | 2017-02-22 | 西安交通大学 | Efficient scanning method for discontinuous filling type laser additive manufacturing |
| CN106984812A (en) * | 2017-04-01 | 2017-07-28 | 鑫精合激光科技发展（北京）有限公司 | A kind of reinforced Laser Scanning melted for selective laser |
| CN109317671A (en) * | 2018-08-15 | 2019-02-12 | 江苏大学 | A kind of method that laser gain material prepares high-entropy alloy |
| CN109676123A (en) * | 2018-12-20 | 2019-04-26 | 西安铂力特增材技术股份有限公司 | A kind of scan method of optical soliton interaction metal, alloy and ceramic part |
| CN109747578A (en) * | 2017-11-06 | 2019-05-14 | 丰田自动车株式会社 | Crash box and its manufacturing method |
| CN110883402A (en) * | 2019-12-04 | 2020-03-17 | 中国航空制造技术研究院 | Electric arc additive manufacturing method |
| CN112008248A (en) * | 2020-07-29 | 2020-12-01 | 大连理工大学 | Method for generating surface pattern track by adopting laser double-scanning strategy |
| CN112059186A (en) * | 2020-11-11 | 2020-12-11 | 中国航发上海商用航空发动机制造有限责任公司 | Molded article with inclined surface and molding method thereof |
| CN112059185A (en) * | 2020-11-11 | 2020-12-11 | 中国航发上海商用航空发动机制造有限责任公司 | Molded article with cantilever structure and method of molding the same |
| CN112453426A (en) * | 2020-12-10 | 2021-03-09 | 安徽工程大学 | 3D printing enhancement process for titanium alloy for aviation |
| CN113510242A (en) * | 2021-06-22 | 2021-10-19 | 上海航翼高新技术发展研究院有限公司 | Rapid forming method of 750 ℃ resistant titanium-based composite cylindrical part |
| CN114012106A (en) * | 2021-10-21 | 2022-02-08 | 宁波中乌新材料产业技术研究院有限公司 | Laser additive manufacturing and forming method of static mixer |
| JP2022515460A (en) * | 2018-12-27 | 2022-02-18 | レイヤーワイズ エヌヴェ | 3D printing system that optimizes contouring for multiple energy beams |
| CN114160809A (en) * | 2021-11-09 | 2022-03-11 | 南京晨光集团有限责任公司 | High-power large-layer thickness selective laser melting forming method |
| CN114951690A (en) * | 2021-02-22 | 2022-08-30 | 广东汉邦激光科技有限公司 | Method and apparatus for forming three-dimensional model |
| CN115026313A (en) * | 2022-08-15 | 2022-09-09 | 杭州爱新凯科技有限公司 | Double-laser single-galvanometer printing system and printing method |
| CN115475961A (en) * | 2022-09-27 | 2022-12-16 | 湖南华曙高科技股份有限公司 | Control method and system for powder bed melting laser sintering and additive manufacturing equipment |
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| CN103658647A (en) * | 2013-12-10 | 2014-03-26 | 华南理工大学 | SLM device based on four lasers and two stations and machining method |
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Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041079A (en) * | 2016-07-20 | 2016-10-26 | 北京隆源自动成型***有限公司 | Selective laser melting forming operation method |
| CN106426907A (en) * | 2016-09-20 | 2017-02-22 | 西安交通大学 | Efficient scanning method for discontinuous filling type laser additive manufacturing |
| CN106426907B (en) * | 2016-09-20 | 2019-07-12 | 西安交通大学 | A kind of efficient scan method of discontinuous filling laser gain material manufacture |
| CN106984812A (en) * | 2017-04-01 | 2017-07-28 | 鑫精合激光科技发展（北京）有限公司 | A kind of reinforced Laser Scanning melted for selective laser |
| CN106984812B (en) * | 2017-04-01 | 2019-01-04 | 鑫精合激光科技发展（北京）有限公司 | A kind of reinforced Laser Scanning for selective laser fusing |
| CN109747578A (en) * | 2017-11-06 | 2019-05-14 | 丰田自动车株式会社 | Crash box and its manufacturing method |
| CN109317671A (en) * | 2018-08-15 | 2019-02-12 | 江苏大学 | A kind of method that laser gain material prepares high-entropy alloy |
| CN109676123A (en) * | 2018-12-20 | 2019-04-26 | 西安铂力特增材技术股份有限公司 | A kind of scan method of optical soliton interaction metal, alloy and ceramic part |
| JP2022515460A (en) * | 2018-12-27 | 2022-02-18 | レイヤーワイズ エヌヴェ | 3D printing system that optimizes contouring for multiple energy beams |
| JP7206395B2 (en) | 2018-12-27 | 2023-01-17 | レイヤーワイズ エヌヴェ | A 3D printing system that optimizes contouring for multiple energy beams |
| CN110883402A (en) * | 2019-12-04 | 2020-03-17 | 中国航空制造技术研究院 | Electric arc additive manufacturing method |
| CN112008248B (en) * | 2020-07-29 | 2021-05-18 | 大连理工大学 | Method for generating surface pattern track by adopting laser double-scanning strategy |
| CN112008248A (en) * | 2020-07-29 | 2020-12-01 | 大连理工大学 | Method for generating surface pattern track by adopting laser double-scanning strategy |
| CN112059186A (en) * | 2020-11-11 | 2020-12-11 | 中国航发上海商用航空发动机制造有限责任公司 | Molded article with inclined surface and molding method thereof |
| CN112059185A (en) * | 2020-11-11 | 2020-12-11 | 中国航发上海商用航空发动机制造有限责任公司 | Molded article with cantilever structure and method of molding the same |
| CN112059185B (en) * | 2020-11-11 | 2021-01-15 | 中国航发上海商用航空发动机制造有限责任公司 | Molded article with cantilever structure and method of molding the same |
| CN112059186B (en) * | 2020-11-11 | 2021-01-15 | 中国航发上海商用航空发动机制造有限责任公司 | Molded article with inclined surface and molding method thereof |
| CN112453426A (en) * | 2020-12-10 | 2021-03-09 | 安徽工程大学 | 3D printing enhancement process for titanium alloy for aviation |
| CN114951690B (en) * | 2021-02-22 | 2024-02-27 | 广东汉邦激光科技有限公司 | Forming method and three-dimensional forming equipment for three-dimensional model |
| CN114951690A (en) * | 2021-02-22 | 2022-08-30 | 广东汉邦激光科技有限公司 | Method and apparatus for forming three-dimensional model |
| CN113510242A (en) * | 2021-06-22 | 2021-10-19 | 上海航翼高新技术发展研究院有限公司 | Rapid forming method of 750 ℃ resistant titanium-based composite cylindrical part |
| CN114012106A (en) * | 2021-10-21 | 2022-02-08 | 宁波中乌新材料产业技术研究院有限公司 | Laser additive manufacturing and forming method of static mixer |
| CN114160809A (en) * | 2021-11-09 | 2022-03-11 | 南京晨光集团有限责任公司 | High-power large-layer thickness selective laser melting forming method |
| CN115026313A (en) * | 2022-08-15 | 2022-09-09 | 杭州爱新凯科技有限公司 | Double-laser single-galvanometer printing system and printing method |
| CN115475961A (en) * | 2022-09-27 | 2022-12-16 | 湖南华曙高科技股份有限公司 | Control method and system for powder bed melting laser sintering and additive manufacturing equipment |
| CN115475961B (en) * | 2022-09-27 | 2023-06-30 | 湖南华曙高科技股份有限公司 | Control method and system for powder bed melting laser sintering and additive manufacturing equipment |
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