CN102151987B - Box for preparing and forming laser material with controllable ambient temperature under inert atmosphere - Google Patents
Box for preparing and forming laser material with controllable ambient temperature under inert atmosphere Download PDFInfo
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- CN102151987B CN102151987B CN2011100247852A CN201110024785A CN102151987B CN 102151987 B CN102151987 B CN 102151987B CN 2011100247852 A CN2011100247852 A CN 2011100247852A CN 201110024785 A CN201110024785 A CN 201110024785A CN 102151987 B CN102151987 B CN 102151987B
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- inert atmosphere
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- heating cabinet
- laser
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Abstract
The invention discloses a box for preparing and forming a laser material with a controllable ambient temperature under an inert atmosphere. The periphery of a heating box (18) has a double-layer structure; heating plates (13) are arranged on the front inner wall and the rear inner wall of the heating box (18); a laser head (23) is arranged in a central hole of a circular upper cover (1); two powder conveying pipes (24) are symmetrically arranged on both sides of the laser head (23); a working table (17) is arranged on the back of a rack (15); a workpiece (27) is placed on the working table (17); a gear (7) engaged with the rack (15) is arranged on a transmission shaft (8); the other end of the transmission shaft (8) passes through the heating box (18) and a cylindrical box body (5) so as to be connected with a motor speed reducer; and the other end of a bracket (22) is connected with a linear motion mechanism. Due to the design of the double-layer box body, the difficulty of high-temperature sealing is solved. As different organizations can be produced by performing laser quick forming at different temperatures, the organization performance of parts can be controlled by controlling the temperature. By the box, the laser quick forming of the metal material which is easy to oxidize and has large thermal stress and poor plasticity can be realized; moreover, the class of the metal prepared by laser and formed quickly is extended.
Description
Technical field
The present invention relates to laser material preparation and forming technique field, particularly relate to a kind of controllable environment temperature inert atmosphere laser material preparation and forming box.
Background technology
high performance metallic composite material, Gradient Materials and the preparation of metal parts laser and shaping, be a kind of pointwise successively the continuous laser melt deposition synchronously add moulding material and prepare metallic composite, a new technology of Gradient Materials and Prototyping Metal Parts, the metallic composite that at first this technology will prepare, Gradient Materials reaches wants the mathematical model of Prototyping Metal Parts to press the certain thickness hierarchy slicing along short transverse, generate every one deck track while scan according to each layering two-dimensional geometry information according to certain rule and drive code, under it drives, numerically controlled machining platform is done plane motion (laser head transfixion), after one deck scanning is completed, laser head according to lift height along raising on Z-axis direction, meanwhile, metal dust or Diversity powder carry mode with inert gas (Ar gas) gas successively sends into laser molten pool by nozzle, (with respect to the relative motion of numerically controlled machining platform) left in motion with laser facula, laser molten pool solidifies (newly adding the material melt deposition), so repeatedly pointwise successively the continuous laser melt deposition until metallic composite, the preparation of Gradient Materials and the shaping of metal parts.
From above-mentioned metallic composite, the preparation of Gradient Materials laser and metal parts During Laser Rapid Forming as can be known; this process must be carried out in the inert protective atmosphere case; to prevent, in prepared metallic composite, Gradient Materials and formed thereby metal parts, too high oxygen content is arranged; make prepared material plasticity decrease and embrittlement, thereby can not meet instructions for use.yet, only carry out metallic composite in the protective atmosphere case, Gradient Materials preparation and metal parts laser forming only can meet preparation and the forming requirements of sub-fraction metal material, be that these metals and alloy material thereof itself have good plasticity, make in forming process, can produce plastic deformation alleviates due to the high-temperature gradient thermal stress that causes strong non-uniform temperature to bring out very in laser molten pool, this thermal stress directly causes the distortion of formed thereby metal parts or causes prepared metallic composite, Gradient Materials cracks and cracking.For solving or mitigation the problems referred to above, existing method is, to workpiece or base plate heating and insulation, with reduce as far as possible due to the heat radiation of workpiece or substrate cause along prepared material and part height direction thermograde, thereby relax non-uniform temperature and reduce consequent thermal stress, guaranteeing the smooth Laser Melting Deposition preparation and shaping of prepared material and metal parts.Even but adopted said method, though certain effect is arranged, but still the laser that can not meet high alloy content metal material prepares and laser fast forming, as the Ni based high-temperature alloy, and, with the metallic composite that high-load (mass percent＞50%) ceramic particle strengthens, strengthen the preparation of the titanium alloy composite material such as TA15, TC4 and some functionally gradient material (FGM)s as TiC.
Summary of the invention
, in order to overcome the prior art above shortcomings, the invention provides a kind of controllable environment temperature inert atmosphere laser material preparation and forming box.The present invention can realize easy oxidation, thermal stress is large and plasticity the is poor preparation of metal material laser and shaping, has widened the kind of laser preparation with form metal.
The technical solution adopted for the present invention to solve the technical problems is: described controllable environment temperature inert atmosphere laser material preparation comprises heating cabinet, inert atmosphere protecting housing and temperature control equipment with forming box.The surrounding of described heating cabinet is its inner asbestos of filling of double-decker, and the front and back inwall of heating cabinet is equipped with heating plate, and heating cabinet is placed on support.Lower surface welding circular outer cylinder and the square tube of the circular upper cover of described inert atmosphere case, within described square tube is arranged on circular outer cylinder, the upper surface of circular upper cover is welded with cooling water pipe, between circular outer cylinder and cylindrical box, sealing ring is set, the bottom, side of cylindrical box arranges air-filled pore, the oxygen measuring pore of bleeding is being set on circular upper cover between circular outer cylinder and square tube, the upper surface of square tube arranges thermocouple.Laser head is installed in the centre bore of circular upper cover, and the both sides of laser head are symmetrical two powder feeding pipe, 45 °-60 ° of the angles of two powder feeding pipe installed respectively.Slide rail is installed in the both sides, bottom surface of heating cabinet base plate centre square aperture, and the slide block that is arranged on tooth bar is mated, the back side installment work platform of tooth bar, place work piece on workbench.Be arranged on power transmission shaft with the tooth bar meshed gears, baffle plate is equipped with in the both sides of described gear.The other end of power transmission shaft passes heating cabinet, cylindrical box is connected with motor reducer, and power transmission shaft is installed in the rolling bearing of support one end, and the other end of support is connected with straight-line motion mechanism.
Described rolling bearing is arranged in ring flange, and the end face seal cap sealing of ring flange is installed bellows and sealed between ring flange and cylindrical box.
The present invention solves another technical scheme that its technical problem adopts: described controllable environment temperature inert atmosphere laser material preparation comprises heating cabinet, inert atmosphere protecting housing and temperature control equipment with forming box.Described heating cabinet is placed on support, and the surrounding of heating cabinet is its inner asbestos of filling of double-decker.before and after heating cabinet, inwall is equipped with heating plate, lower surface welding circular outer cylinder and the square tube of the circular upper cover of described inert atmosphere case, the upper surface of circular upper cover is welded with cooling water pipe, within described square tube is arranged on circular outer cylinder, between circular outer cylinder and cylindrical box, sealing ring is set, the bottom, side of cylindrical box arranges air-filled pore, the oxygen measuring pore of bleeding is set between the circular outer cylinder of circular upper cover and square tube, laser head is installed in the centre bore of circular upper cover, two powder feeding pipe of the symmetrical installation of difference on the circular upper cover of laser head both sides, 45 °-60 ° of the angles of two powder feeding pipe.One end of described power transmission shaft is connected with motor reducer, and the power transmission shaft other end passes cylindrical box, heating cabinet is installed rotary work piece in its end.Power transmission shaft is installed in the rolling bearing of support one end, and the other end of support is connected with straight-line motion mechanism.Described rolling bearing is arranged in ring flange, and the end face seal cap sealing of ring flange is installed bellows and sealed between ring flange and cylindrical box.
The invention has the beneficial effects as follows:, because gear and tooth bar and rolling bearing are arranged on outside heating cabinet, be not subjected to the impact of high temperature, can select common gear and tooth bar and rolling bearing., by the design of two layer box bodies, solved the difficult problem of elevated-temperature seal.In the situation that continuous punching row Ar gas, less than 50PPm, operating temperature can reach 800 ℃ of left and right when measuring oxygen content in work., lower than 50PPm, effectively stoped the generation of oxidation due to oxygen content, can make and be rich in metallic luster and without the laser fast forming part of crisp hard phenomenon.Because operating temperature can reach 800 ℃ of left and right, on the one hand, required laser power in the time of can reducing metallic composite, functionally gradient material (FGM) and metal parts laser fast forming, decrease the thermal stress intensity that produces because thermograde is high due to laser molten pool and adjacent area thereof, thereby, can effectively control distortion and cracking prepared and moulding material and part, simultaneously, carry out Laser Melting Deposition and can produce different tissues at different temperature, thereby reach the structure property of controlling part by controlling temperature.Therefore, the present invention can realize the laser fast forming of easy oxidation, thermal stress is large and plasticity is poor metal material, and has widened the kind of Laser Melting Deposition preparation with form metal.
Description of drawings
Fig. 1 is the preparation of plane motion controllable environment temperature inert atmosphere laser material and forming box structural representation;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the top view of circular upper cover;
Fig. 4 is the left view of Fig. 1;
Fig. 5 is slide block, tooth bar, guide rail and workbench partial enlarged drawing;
Fig. 6 is the rotatablely move preparation of controllable environment temperature inert atmosphere laser material and forming box structural representation;
Fig. 7 is the top view of Fig. 6;
Fig. 8 is the left view of Fig. 6.
In above-mentioned accompanying drawing, 1. circular upper cover, 2. hot box, 3. seal sleeve, 4. sealing ring, 5. sealed cylindrical, 6. support, 7. gear, 8. axle, 9. flange, 10. sealed bearing, 11. end caps, 12. baffle plates, 13. heating plates, 14. slide blocks, 15. tooth bar, 16. guide rails, 17. workbench, 18. heating cabinets, 19. rotary work pieces, 20. thermal insulation board, 21. bellowss, 22. supports, 23. laser heads, 24. powder feeding pipe, 25. inflation inlet, 26. exhaust oxygen determination mouths, 27. workpiece, 28. thermocouples, 29. cooling water pipes.
The specific embodiment
Embodiment 1
Fig. 1, the 2nd, an embodiment disclosed by the invention.Described controllable environment temperature inert atmosphere laser material preparation and the main processing non-turning workpiece of forming box, described forming box comprises heating cabinet 18, inert atmosphere protecting housing and temperature control equipment.Described heating cabinet 18 is placed on support 6, and the surrounding of heating cabinet 18 is double-decker, fills asbestos in the surrounding double-decker, and heating cabinet 18 front and back inwalls are equipped with heating plate 13.lower surface welding circular outer cylinder 3 and the square tube 2 of the circular upper cover 1 of described inert atmosphere case, within described square tube 2 is arranged on circular outer cylinder 3, the upper surface of circular upper cover 1 is welded with cooling water pipe 29, between circular outer cylinder 3 and cylindrical box 5, sealing ring 4 is set, the bottom, side of cylindrical box 5 arranges air-filled pore 25, the oxygen measuring pore 26 of bleeding is being set on circular upper cover 1 between circular outer cylinder 3 and square tube 2, square tube 2 upper surfaces arrange thermocouple 28, laser head 23 is installed in the centre bore of circular upper cover 1, the both sides of laser head 23 are two powder feeding pipe 24 of symmetrical installation respectively, 45 ° of the angles of two powder feeding pipe 24.Slide rail 16 is installed in the both sides, bottom surface of heating cabinet 18 base plate centre square aperture, and the slide block 14 that is arranged on tooth bar 15 is mated, the back side installment work platform 17 of tooth bar 15, and on workbench 17, place work piece 27; Be arranged on power transmission shaft 8 with tooth bar 15 meshed gears 7, baffle plate 12 is equipped with in the both sides of described gear 7.The other end of power transmission shaft 8 passes heating cabinet 18, cylindrical box 5 is connected with motor reducer, the interior installation power transmission shaft 8 of the rolling bearing 10 of support 22 1 ends, and the other end of support 22 is connected with straight-line motion mechanism.Rolling bearing 10 is arranged in ring flange 9, and the end face of ring flange 9, with seal cover 11 sealings, is installed bellows 21 between ring flange 9 and cylindrical box 5.
Embodiment 2
Fig. 6,7, the 8th, second embodiment disclosed by the invention, described controllable environment temperature inert atmosphere laser material preparation is mainly processed rotary work piece with forming box.The structure of this embodiment and embodiment 1 is basic identical, removes gear 7, tooth bar 15 and workbench 17 in heating cabinet 18, and an end of the power transmission shaft 8 in heating cabinet 18 is installed the rotary work piece 19 that needs surface cladding by shaft coupling.
The course of work
At first load onto laser head 23 and powder feeding pipe 24, regulate powder feeding pipe 24 the powder focus is adjusted to laser spot and overlapped, then seal sleeve 3, hot box 2, circular upper cover 1 are bolted.Heating cabinet 18 is placed in the sealed cylindrical 5 of inert atmosphere case, then circular upper cover 1 is enclosed within on the sealing flange of sealed cylindrical 5.Do while along Z axis, moving with laser head 23, the sealing ring 4 on circular upper cover 1 inwall and sealed cylindrical 5 forms slipper seals.After connection is completed, first bleed, then pour Ar gas, so repeatedly, when measuring in case oxygen content with oxygen analyzer less than 100ppm, after temperature in thermocouple 28 measurement casees reaches design temperature simultaneously, can start the preparation of metallic composite, Gradient Materials or the laser fast forming of metal parts.
The workbench of four axle laser numerically controlled machining platforms is connected with support 22, drives support 22 and does rectilinear motion.The other end of support 22 is equipped with ring flange 9, rolling bearing 10, and rolling bearing 10 end faces seal with seal cover 11.Power transmission shaft 8 passes rolling bearing 10 and extend in cylindrical box 5, and the one end connects gear 7 with key, and gear 7 and tooth bar 15 engagements, be converted into rectilinear motion in order to rotatablely moving.Motor reducer is placed on four axle laser numerically controlled machining platforms, and power transmission shaft 8 is clamped on the motor reducer that rotates.When the workbench drive support 22 of 4 axle laser numerically controlled machining platforms was done rectilinear motion by the diagram arrow, gear 7 was also done rectilinear motion by circular baffle plate 12 band carry-over bars 15, the workbench 17 of both sides, and two rectilinear motions synthesize makes workbench 17 do plane motion.
When needs are done revolving body workpieces, need the rotary work piece 19 of surface cladding to be connected with power transmission shaft 8 by shaft coupling, and directly rotary work piece 19 is extend in heating cabinet 18, one end of power transmission shaft 8 is clamped on the motor reducer that rotates, when motor reducer rotated, power transmission shaft 8 drove rotary work piece 19 and rotates.When support 22 drive power transmission shafts 8 were done rectilinear motion, rotary work piece 19 was done axial linear movement, can be therefore the heavy wall disk-like accessory with rotary work piece 19 laser formings.
Claims (8)
1. a controllable environment temperature inert atmosphere laser material prepares and forming box, described forming box comprises heating cabinet (18), inert atmosphere protecting housing and temperature control equipment, it is characterized in that: the surrounding of described heating cabinet (18) is double-decker, before and after it, inwall is equipped with heating plate (13), and heating cabinet (18) is placed on support (6); The circular upper cover of described inert atmosphere case (1) lower surface welding circular outer cylinder (3) and square tube (2), within described square tube (2) is arranged on circular outer cylinder (3), the upper surface of circular upper cover (1) is welded with cooling water pipe (29), between circular outer cylinder (3) and cylindrical box (5), sealing ring (4) is set, the bottom, side of cylindrical box (5) arranges air-filled pore (25), the oxygen measuring pore (26) of bleeding is set being positioned on circular upper cover (1) between circular outer cylinder (3) and square tube (2), the upper surface of square tube (2) arranges thermocouple (28); Laser head (23) is installed in the centre bore of circular upper cover (1), and the both sides of laser head (23) are symmetrical two powder feeding pipe (24) of installing respectively; Slide rail (16) is installed in the both sides, bottom surface of heating cabinet (18) base plate centre square aperture, the slide block (14) that is arranged on tooth bar (15) is mated, the back side installment work platform (17) of tooth bar (15), the upper place work piece (27) of workbench (17); Be arranged on power transmission shaft (8) with tooth bar (15) meshed gears (7), the other end of power transmission shaft (8) passes heating cabinet (18), cylindrical box (5) is connected with motor reducer, power transmission shaft (8) is installed in the rolling bearing (10) of support (22) one ends, and the other end of support (22) is connected with straight-line motion mechanism.
2. controllable environment temperature inert atmosphere laser material preparation according to claim 1 and forming box, is characterized in that: fill asbestos in described heating cabinet (18) surrounding double-decker.
3. controllable environment temperature inert atmosphere laser material according to claim 1 prepares and forming box, and it is characterized in that: the angle of described two powder feeding pipe (24) is 45 °-60 °.
4. controllable environment temperature inert atmosphere laser material according to claim 1 prepares and forming box, it is characterized in that: described rolling bearing (10) is arranged in ring flange (9), the end face of ring flange (9), with seal cover (11) sealing, is installed bellows (21) between ring flange (9) and cylindrical box (5).
5. controllable environment temperature inert atmosphere laser material according to claim 1 prepares and forming box, and it is characterized in that: baffle plate (12) is equipped with in the both sides of described gear (7).
6. a controllable environment temperature inert atmosphere laser material prepares and forming box, described forming box comprises heating cabinet (18), inert atmosphere protecting housing and temperature control equipment, it is characterized in that: the surrounding of described heating cabinet (18) is double-decker, before and after it, inwall is equipped with heating plate (13), and heating cabinet (18) is placed on support (6); Lower surface welding circular outer cylinder (3) and the square tube (2) of the circular upper cover of described inert atmosphere case (1), within described square tube (2) is arranged on circular outer cylinder (3), the upper surface of circular upper cover (1) is welded with cooling water pipe (29), between circular outer cylinder (3) and cylindrical box (5), sealing ring (4) is set, the bottom, side of cylindrical box (5) arranges air-filled pore (25), the oxygen measuring pore (26) of bleeding is set between the circular outer cylinder (3) of circular upper cover (1) and square tube (2), square tube (2) upper surface arranges thermocouple (28); Laser head (23) is installed, upper symmetrical two powder feeding pipe (24), 45 °-60 ° of the angles of two powder feeding pipe (24) installed respectively of the circular upper cover (1) of laser head (23) both sides in the centre bore of circular upper cover (1); Power transmission shaft (8) one ends pass cylindrical box (5), heating cabinet (18) is installed rotary work piece (19) in its end, and its other end is connected with motor reducer; Power transmission shaft (8) is installed in the rolling bearing (10) of support (22) one ends, and the other end of support (22) is connected with straight-line motion mechanism.
7. controllable environment temperature inert atmosphere laser material preparation according to claim 6 and forming box, is characterized in that: fill asbestos in described heating cabinet (18) surrounding double-decker.
8. controllable environment temperature inert atmosphere laser material according to claim 6 prepares and forming box, it is characterized in that: rolling bearing (10) is arranged in ring flange (9), the end face of ring flange (9), with seal cover (11) sealing, is installed bellows (21) between ring flange (9) and cylindrical box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100247852A CN102151987B (en) | 2011-01-21 | 2011-01-21 | Box for preparing and forming laser material with controllable ambient temperature under inert atmosphere |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100247852A CN102151987B (en) | 2011-01-21 | 2011-01-21 | Box for preparing and forming laser material with controllable ambient temperature under inert atmosphere |
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| Publication Number | Publication Date |
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| CN102151987A CN102151987A (en) | 2011-08-17 |
| CN102151987B true CN102151987B (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100247852A Expired - Fee Related CN102151987B (en) | 2011-01-21 | 2011-01-21 | Box for preparing and forming laser material with controllable ambient temperature under inert atmosphere |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162742B (en) * | 2013-05-20 | 2016-05-25 | 大族激光科技产业集团股份有限公司 | Laser processing and processing unit (plant) |
| CN105033436B (en) * | 2015-08-19 | 2017-03-08 | 四川优普超纯科技有限公司 | A kind of horizontal hot plate welding equipment for welding cylinder and end cap |
| CN106363297B (en) * | 2016-12-02 | 2018-01-30 | 哈尔滨理工大学 | A kind of laser prepares the built-in regulation of micro- texture rare gas protection and laser head sealing clamp |
| CN112139497B (en) * | 2020-09-21 | 2021-12-17 | 大连理工大学 | High-temperature integral preheating auxiliary additive manufacturing device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301371A (en) * | 1998-04-02 | 2000-10-31 | Matsushita Electric Ind Co Ltd | Method and device for fusion-joining high melting temperature material |
| CN1351919A (en) * | 2001-12-24 | 2002-06-05 | 北京工业大学 | Special equipment and process of laser fusion coating for producing high speed wire rod roller |
| CN101070595A (en) * | 2007-06-13 | 2007-11-14 | 华中科技大学 | Method and apparatus for preparing material coating by laser inductive composite melt-coating |
| CN101125394A (en) * | 2007-06-13 | 2008-02-20 | 华中科技大学 | Automatic powder feeding laser induction composite coating method and device |
| CN101362254A (en) * | 2008-09-12 | 2009-02-11 | 大连理工大学 | Laser processing zone physical state regulation method and device |
| CN101607348A (en) * | 2009-07-10 | 2009-12-23 | 西北工业大学 | A kind of inert atmosphere control device that is used for laser forming and reparation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005024790A1 (en) * | 2005-05-26 | 2006-12-07 | Eos Gmbh Electro Optical Systems | Radiant heating for heating the building material in a laser sintering device |
-
2011
- 2011-01-21 CN CN2011100247852A patent/CN102151987B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301371A (en) * | 1998-04-02 | 2000-10-31 | Matsushita Electric Ind Co Ltd | Method and device for fusion-joining high melting temperature material |
| CN1351919A (en) * | 2001-12-24 | 2002-06-05 | 北京工业大学 | Special equipment and process of laser fusion coating for producing high speed wire rod roller |
| CN101070595A (en) * | 2007-06-13 | 2007-11-14 | 华中科技大学 | Method and apparatus for preparing material coating by laser inductive composite melt-coating |
| CN101125394A (en) * | 2007-06-13 | 2008-02-20 | 华中科技大学 | Automatic powder feeding laser induction composite coating method and device |
| CN101362254A (en) * | 2008-09-12 | 2009-02-11 | 大连理工大学 | Laser processing zone physical state regulation method and device |
| CN101607348A (en) * | 2009-07-10 | 2009-12-23 | 西北工业大学 | A kind of inert atmosphere control device that is used for laser forming and reparation |
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| CN102151987A (en) | 2011-08-17 |
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