CN104313568A - Local inert gas protection device for laser deposition repair of metal parts - Google Patents
Local inert gas protection device for laser deposition repair of metal parts Download PDFInfo
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- CN104313568A CN104313568A CN201410536458.9A CN201410536458A CN104313568A CN 104313568 A CN104313568 A CN 104313568A CN 201410536458 A CN201410536458 A CN 201410536458A CN 104313568 A CN104313568 A CN 104313568A
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- inert gas
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- laser deposition
- repaired
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
Abstract
The invention relates to a gas protection device, and in particular relates to a local inert gas protection device for the laser deposition repair of metal parts, belonging to the technical field of laser processing. The local inert gas protection device is compact in structure and stable in performances, can meet the space requirement of test installation, and is low in design and manufacture costs, simple and practical; a stand column of a movement executing mechanism at the upper end of a coaxial powder feeding nozzle is connected with the to-be-repaired part of a titanium alloy part by a soft seal cover. Therefore, a locally sealed flexible atmosphere protection chamber is formed between the part and the stand column, and an inert gas inlet, an inert gas outlet and interfaces of various gas sensors are reserved in the soft seal cover, so that the contents of all gases in the sealed atmosphere chamber can be conveniently detected, the whole titanium alloy part can be repaired in the presence of the purer inert gas, and a better laser repair effect can be further achieved.
Description
Technical field
The present invention relates to a kind of gas shield device, specifically relate to a kind of metal parts laser deposition reparation local inert gas protection device, it belongs to technical field of laser processing.
Background technology
Titanium alloy has the features such as the biological activity that specific tenacity is high, good corrosion resistance, thermotolerance are high and good, is widely used in the fields such as Aeronautics and Astronautics, navigation, automobile, metallurgy, chemical industry, medical science in recent years.But, the cost that the feature of the resistance to deformation that the high-melting-point, the high molten state that have of titanium alloy itself is active and large makes titanium alloy be shaped from starting material to preparation improves all greatly.In addition, there will be certain error unavoidably in the course of processing of part and cause semi-finished articles or closely add scrapping of part eventually.And severe part Service Environment also can cause the damage of part, and then causes larger financial loss.If scrap part entirety or change, not only produce and the replacement cycle longer, and due to part processing charges and cost of raw and processed materials costliness, also can cause great waste.If carry out reparation to these titanium alloy components and manufacture again, not only can reduce loss, and greatly can shorten the production cycle, reduce costs.
Laser deposition recovery technique can realize having the reparation of the part damaged compared with complicated shape, certain depth manufacturing defect, by mistake machining damage or military service and manufacturing.Laser deposition recovery technique compensate for the deficiency of conventional repair techniques existing for repair member physical dimension and structure property control, shows huge prospect in the reparation field of titanium alloy component.
In laser deposition repair process; the high oxidation of titanium alloy under the high reactivity and high temperature of molten state and nitrogenize tendency, make the reparation district in repair process and main body protection problem become the important factor of restriction titanium alloy component laser deposition remediation efficiency and repair member performance.In order to improve repairing effect, improving repairing quality, usually titanium alloy component being placed in a closed atmosphere protection casing being full of rare gas element and carrying out.In order to realize such inert gas environment, common way first utilizes vacuum pump to be vacuumized atmosphere protection room, and then fill inert protective gas inside.So repeatedly vacuumize, fill inert protective gas and can obtain comparatively pure inert gas environment several times.But the atmosphere protection environment utilizing aforesaid method to obtain, not only early stage equipment design and manufacture cost have high input, and equipment in use needs to repeat to vacuumize, filling with inert gas thus reach reduces oxygen, the object of the content of nitrogen G&W.But this method is not high to the utilization ratio of rare gas element, longevity of service, reduce laser repairing efficiency.Meanwhile, size limit of closed atmosphere protection box sizes can the scope of rebuild part size, and therefore this method cannot adapt to the large feature of rebuild part dimensional change scope, thus reduces the utilization ratio of equipment, adds production cost.
Summary of the invention
In view of prior art Problems existing; the object of the invention is to provide a kind of compact construction, with low cost, stable performance and easy to operate metal parts laser deposition reparation local inert gas protection device, be particularly applied to the local inert gas protection device that titanium alloy component is repaired.
For achieving the above object, the technical solution adopted in the present invention is: metal parts laser deposition reparation local inert gas protection device, is characterized in that: described local indifferent gas dress protector comprises permanent seat wear ring, lip ring, soft seal closure, support frame and gas detection sensor; The column of permanent seat wear ring and coaxial powder-feeding nozzle upper end movement executing mechanism is connected to form sealing, is connected between permanent seat wear ring and lip ring by soft seal closure; Two annular sealing strips that described lip ring is parallel to each other by profile are formed, and be provided with between two annular sealing strips and vacuumize hole, soft seal closure is provided with the first air valve and the second air valve; Gas detection sensor interface on described soft seal closure; Described soft seal closure is provided with support frame.
Described lip ring contacts with workpiece to be repaired, and by vacuumizing the air in the middle of hole extraction lip ring and workpiece to be repaired, lip ring becomes vacuum pad, utilize negative pressure of vacuum principle to complete lip ring and workpiece to be repaired quick be coupled to be formed seal.
Metal parts laser deposition reparation local as above inert gas protection device, it is applied to laser deposition prosthetic device, and laser deposition prosthetic device is arranged in the middle of the atmosphere protection room of local inert gas protection device formation; Described laser deposition prosthetic device comprises laser apparatus, condensing lens, powder feeder and coaxial powder-feeding nozzle; Laser apparatus and condensing lens be arranged in parallel; coaxial powder-feeding nozzle is located at the lower end of condensing lens; powder feeder is connected with coaxial powder-feeding nozzle, and the local indifferent gas dress permanent seat wear ring of protector and the column of coaxial powder-feeding nozzle upper end movement executing mechanism are connected to form sealing.
Compared with prior art, beneficial effect of the present invention:
(1) this local inert gas protection device compact construction, stable performance, meet the space requirement that test is installed, design and manufacture cost is cheap, simple and practical; A kind of soft seal closure is adopted to be connected between movement executing mechanism column in coaxial powder-feeding nozzle upper end with titanium alloy component position to be repaired.So far; the flexible atmosphere protection room that formation one is partially sealed between part and column; the interface of the inlet mouth of reserved rare gas element, air outlet and various gas sensor on this soft seal closure; to detect the content of the indoor each gas of closed atmosphere; ensure that whole titanium alloy component repair process carries out under a purer protection of inert gas, and then obtain better laser repairing effect.
(2) this local inert gas protection device can be good at adapting to large, the complex-shaped changeable feature of accessory size variation range to be repaired, expands the scope of application of laser deposition renovation technique; Improve the utilization ratio of rare gas element in repair process simultaneously, well can play the effect of protection of inert gas, the problem mentioned in improving environment background and defect.
Accompanying drawing explanation
Fig. 1 is present system composition schematic diagram;
Fig. 2 is structural representation under the full gaseity of the present invention;
Fig. 3 is vertical view of the present invention;
Fig. 4 is used for the atmosphere protection cell structure schematic diagram of flat-type part;
Fig. 5 is used for the atmosphere protection cell structure schematic diagram of Cylinder Parts;
Fig. 6 is used for the atmosphere protection cell structure schematic diagram of curved surface class part;
In figure: 1, condensing lens, 2, permanent seat wear ring, the 3, first air valve, 4, soft seal closure, 5, gas detection sensor interface, 6, the second air valve, 7, annular sealing strip, 8, part, 9, vacuumize hole, 10, support frame, 11, powder feeder, 12, coaxial powder-feeding nozzle, 13, laser apparatus.
Embodiment
Metal parts laser deposition reparation local inert gas protection device, it comprises permanent seat wear ring 2, annular sealing strip 7, soft seal closure 4, support frame 10 and gas detection sensor interface 5 and forms; Top, atmosphere protection room utilizes permanent seat wear ring 2 to be connected to form sealing with the column of coaxial powder-feeding nozzle 12 upper end movement executing mechanism; Two annular sealing strips 7 that bottom, atmosphere protection room profile is parallel to each other are fixed along part 8 position to be repaired circumference; Soft seal closure 5 is adopted to connect between permanent seat wear ring 2, annular sealing strip 7; Article two, be provided with between annular sealing strip 7 and vacuumize hole 9, soft seal closure 5 is provided with the first air valve and the second air valve.
Metal parts laser deposition reparation local as above inert gas protection device, it is applied to laser deposition prosthetic device, and laser deposition prosthetic device is arranged in the atmosphere protection room of local inert gas protection device formation; Described laser deposition prosthetic device comprises laser apparatus 13, condensing lens 1, powder feeder 11, coaxial powder-feeding nozzle 12; Laser apparatus 13 and condensing lens 1 be arranged in parallel, coaxial powder-feeding nozzle 12 is located at the lower end of condensing lens, powder feeder 11 is connected with coaxial powder-feeding nozzle 12, and the permanent seat wear ring 2 that localised protection device of air is established is connected to form sealing with the column of coaxial powder-feeding nozzle 12 upper end movement executing mechanism; Lip ring contacts with workpiece to be repaired, and by vacuumizing the air in the middle of hole extraction lip ring and workpiece to be repaired, lip ring becomes vacuum pad, utilize negative pressure of vacuum principle to complete lip ring and workpiece to be repaired quick be coupled to be formed seal.
Working process of the present invention is: treating before rebuild part 8 repairs, first tackling position to be repaired and carrying out regularization and cleaning oily waste treatment; Next opens support frame 10, the annular sealing strip 7 that two profiles are parallel to each other is installed, open vacuum pump K1 and valve K6 by vacuumizing hole 9, the cavity that annular sealing strip 7 and part to be repaired 8 are formed to be vacuumized, and then the effect of sealing is played to atmosphere protection room; Column permanent seat wear ring 2 is installed; Local gas protector installs; It can form a local atmosphere protection room to part area to be repaired, packs up support frame 10, closes argon tanks air outlet valve K2 and opens the air that vacuum pump valve K1 extracts atmosphere protection indoor; After aforesaid operations completes, open argon tanks air outlet valve K2 and close vacuum pump valve K1, inertia protection gas is filled to atmosphere protection indoor; Open oxygen, aqueous vapor, nitrogen content test chart gas valve K5 simultaneously, detect the content of each composition, the content according to each composition test repeats 3 ~ 5 times said process, makes each gaseous constituent content of atmosphere protection indoor meet the job requirement of laser repairing; If require strict to oxygen, nitrogen, water-content, open gas treating system K3, purification is to requiring content; Just laser deposition repair can be carried out after opening support frame.
As shown in Figure 3: flat-type part type makes part to be repaired and gas shield device tight joint than being easier to by negative pressure of vacuum mode, this juncture convenient and swift being conducive to improves laser repairing efficiency.
As shown in Figure 4: Cylinder Parts type than flat-type part to be connected with gas shield device relative complex some; because the special sealing material of annular sealing strip 7 makes; have certain shrinkability and snappiness, when therefore Cylinder Parts diameter changes little, annular sealing strip 7 can play sealing function completely.
As shown in Figure 5: gas shield device can be suitable for the less part of curvature, this type of part and gas shield device coupling poor, grinding process should be carried out with gas shield device junction in a pre-installation, be conducive to improving its coupling.Although annular sealing strip 7 has certain shrinkability and snappiness, rubber is connected with curved surface part to be difficult to reach and mates completely, increases its engaging force by improving suction pressure.
Claims (4)
1. metal parts laser deposition reparation local inert gas protection device, is characterized in that: described local indifferent gas dress protector comprises permanent seat wear ring, lip ring, soft seal closure, support frame and gas detection sensor; The column of permanent seat wear ring and coaxial powder-feeding nozzle upper end movement executing mechanism is connected to form sealing, is connected between permanent seat wear ring and lip ring by soft seal closure; Two annular sealing strips that described lip ring is parallel to each other by profile are formed, and be equipped with and vacuumize hole between two annular sealing strips and on soft seal closure; Described soft seal closure is provided with inert gas import, inert gas outlet and gas detection sensor interface; Described soft seal closure is provided with support frame.
2. metal parts laser deposition reparation local according to claim 1 inert gas protection device; it is characterized in that: described lip ring contacts with workpiece to be repaired; and by vacuumizing the air in the middle of hole extraction lip ring and workpiece to be repaired; lip ring becomes vacuum pad, utilize negative pressure of vacuum principle to complete lip ring and workpiece to be repaired quick be coupled to be formed seal.
3. metal parts laser deposition reparation local as claimed in claim 1 inert gas protection device, it is applied to laser deposition prosthetic device, and laser deposition prosthetic device is arranged in the middle of the atmosphere protection room of local inert gas protection device formation; Described laser deposition prosthetic device comprises laser apparatus, condensing lens, powder feeder and coaxial powder-feeding nozzle; Laser apparatus and condensing lens be arranged in parallel; coaxial powder-feeding nozzle is located at the lower end of condensing lens; powder feeder is connected with coaxial powder-feeding nozzle, and the local indifferent gas dress permanent seat wear ring of protector and the column of coaxial powder-feeding nozzle upper end movement executing mechanism are connected to form sealing.
4. the using method of metal parts laser deposition reparation local as claimed in claim 1 inert gas protection device, it is characterized in that: its process is: treating before rebuild part repairs, first tackling position to be repaired and carrying out regularization and cleaning oily waste treatment; Next opens support frame, installs the annular sealing strip that two profiles are parallel to each other, and opens vacuum pump K1 and valve K6 and is vacuumized by the cavity that annular sealing strip and part to be repaired are formed by vacuumizing hole, and then play the effect of sealing to atmosphere protection room; Column permanent seat wear ring is installed; Local gas protector installs; It can form a local atmosphere protection room to part area to be repaired, packs up support frame, closes argon tanks air outlet valve K2 and opens the air that vacuum pump valve K1 extracts atmosphere protection indoor; After aforesaid operations completes, open argon tanks air outlet valve K2 and close vacuum pump valve K1, inertia protection gas is filled to atmosphere protection indoor; Open oxygen, aqueous vapor, nitrogen content test chart gas valve K5 simultaneously, detect the content of each composition, the content according to each composition test repeats 3 ~ 5 times said process, makes each gaseous constituent content of atmosphere protection indoor meet the job requirement of laser repairing; If require strict to oxygen, nitrogen, water-content, open gas treating system K3, purification is to requiring content; Just laser deposition repair can be carried out after opening support frame.
Priority Applications (1)
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| CN201410536458.9A CN104313568B (en) | 2014-10-11 | 2014-10-11 | Metal parts laser deposition repairs local inert gas protection device |
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| CN201410536458.9A CN104313568B (en) | 2014-10-11 | 2014-10-11 | Metal parts laser deposition repairs local inert gas protection device |
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| CN104313568A true CN104313568A (en) | 2015-01-28 |
| CN104313568B CN104313568B (en) | 2016-10-26 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148944A (en) * | 2015-04-17 | 2016-11-23 | 中国科学院沈阳自动化研究所 | A kind of large titanium alloy part laser repairing equipment |
| CN110280762A (en) * | 2019-07-09 | 2019-09-27 | 南京中科煜宸激光技术有限公司 | Inert gas shielding flexibility warehouse and the processing method for utilizing the flexibility warehouse |
| CN110576183A (en) * | 2018-06-08 | 2019-12-17 | 中国科学院沈阳自动化研究所 | Laser material increase and decrease composite manufacturing equipment for large-scale die maintenance and manufacturing |
| CN110670065A (en) * | 2019-10-09 | 2020-01-10 | 东北大学 | Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades |
| CN111515394A (en) * | 2020-05-18 | 2020-08-11 | 南京理工大学 | Laser three-dimensional forming inert atmosphere protection box |
| CN112222425A (en) * | 2020-08-31 | 2021-01-15 | 西安交通大学 | Method and system for rapidly reducing water oxygen content of forming chamber in additive manufacturing process |
| CN112743105A (en) * | 2020-12-10 | 2021-05-04 | 西安铂力特增材技术股份有限公司 | Atmosphere protection device for active metal external field additive repair and repair method |
| CN113028058A (en) * | 2021-03-02 | 2021-06-25 | 吉林大学 | Additive manufacturing gas protection sealing device and sealing method |
| CN113070490A (en) * | 2021-03-30 | 2021-07-06 | 华中科技大学 | Laser powder feeding and atmosphere repairing protection device |
| CN113199038A (en) * | 2021-05-07 | 2021-08-03 | 吉林大学 | Bionic deformation self-adaptive flexible sealing 3D printing equipment with bamboo fungus structure |
| CN113245564A (en) * | 2021-06-11 | 2021-08-13 | 季华实验室 | Local inert gas protection system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205757Y (en) * | 1994-11-01 | 1995-08-23 | 何湘华 | Solidifying gas sealing cover for sand mould of water glass |
| CN201446232U (en) * | 2009-07-10 | 2010-05-05 | 西北工业大学 | Inert atmosphere control device for enclosed circulating purification |
| CN102453906A (en) * | 2010-10-20 | 2012-05-16 | 中国科学院力学研究所 | Multifunctional gas protection atmosphere case for laser cladding formation |
| CN103741139A (en) * | 2014-01-22 | 2014-04-23 | 韶关学院 | Quick laser cladding device and cladding method of flat metal parts |
| CN104014912A (en) * | 2014-06-07 | 2014-09-03 | 中国人民解放军装甲兵工程学院 | Titanium and titanium alloy component arc welding adding material remanufacturing method |
| CN203907133U (en) * | 2013-12-24 | 2014-10-29 | 珠海派诺科技股份有限公司 | Antifouling protection cover |
| CN204251713U (en) * | 2014-10-11 | 2015-04-08 | 沈阳航空航天大学 | A kind of metal parts laser deposition reparation local inert gas protection device |
-
2014
- 2014-10-11 CN CN201410536458.9A patent/CN104313568B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205757Y (en) * | 1994-11-01 | 1995-08-23 | 何湘华 | Solidifying gas sealing cover for sand mould of water glass |
| CN201446232U (en) * | 2009-07-10 | 2010-05-05 | 西北工业大学 | Inert atmosphere control device for enclosed circulating purification |
| CN102453906A (en) * | 2010-10-20 | 2012-05-16 | 中国科学院力学研究所 | Multifunctional gas protection atmosphere case for laser cladding formation |
| CN203907133U (en) * | 2013-12-24 | 2014-10-29 | 珠海派诺科技股份有限公司 | Antifouling protection cover |
| CN103741139A (en) * | 2014-01-22 | 2014-04-23 | 韶关学院 | Quick laser cladding device and cladding method of flat metal parts |
| CN104014912A (en) * | 2014-06-07 | 2014-09-03 | 中国人民解放军装甲兵工程学院 | Titanium and titanium alloy component arc welding adding material remanufacturing method |
| CN204251713U (en) * | 2014-10-11 | 2015-04-08 | 沈阳航空航天大学 | A kind of metal parts laser deposition reparation local inert gas protection device |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148944B (en) * | 2015-04-17 | 2018-07-31 | 中国科学院沈阳自动化研究所 | A kind of large titanium alloy part laser repairing equipment |
| CN106148944A (en) * | 2015-04-17 | 2016-11-23 | 中国科学院沈阳自动化研究所 | A kind of large titanium alloy part laser repairing equipment |
| CN110576183A (en) * | 2018-06-08 | 2019-12-17 | 中国科学院沈阳自动化研究所 | Laser material increase and decrease composite manufacturing equipment for large-scale die maintenance and manufacturing |
| CN110280762A (en) * | 2019-07-09 | 2019-09-27 | 南京中科煜宸激光技术有限公司 | Inert gas shielding flexibility warehouse and the processing method for utilizing the flexibility warehouse |
| CN110280762B (en) * | 2019-07-09 | 2024-02-06 | 南京中科煜宸激光技术有限公司 | Inert gas-shielded flexible bin body and processing method using same |
| CN110670065B (en) * | 2019-10-09 | 2022-02-01 | 东北大学 | Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades |
| CN110670065A (en) * | 2019-10-09 | 2020-01-10 | 东北大学 | Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades |
| CN111515394A (en) * | 2020-05-18 | 2020-08-11 | 南京理工大学 | Laser three-dimensional forming inert atmosphere protection box |
| CN112222425A (en) * | 2020-08-31 | 2021-01-15 | 西安交通大学 | Method and system for rapidly reducing water oxygen content of forming chamber in additive manufacturing process |
| CN112743105A (en) * | 2020-12-10 | 2021-05-04 | 西安铂力特增材技术股份有限公司 | Atmosphere protection device for active metal external field additive repair and repair method |
| CN113028058A (en) * | 2021-03-02 | 2021-06-25 | 吉林大学 | Additive manufacturing gas protection sealing device and sealing method |
| CN113028058B (en) * | 2021-03-02 | 2023-10-31 | 吉林大学 | Additive manufacturing gas protection sealing device and sealing method |
| CN113070490B (en) * | 2021-03-30 | 2022-06-14 | 华中科技大学 | Laser powder feeding and atmosphere repairing protection device |
| CN113070490A (en) * | 2021-03-30 | 2021-07-06 | 华中科技大学 | Laser powder feeding and atmosphere repairing protection device |
| CN113199038B (en) * | 2021-05-07 | 2021-12-14 | 吉林大学 | Bionic deformation self-adaptive flexible sealing 3D printing equipment with bamboo fungus structure |
| CN113199038A (en) * | 2021-05-07 | 2021-08-03 | 吉林大学 | Bionic deformation self-adaptive flexible sealing 3D printing equipment with bamboo fungus structure |
| CN113245564A (en) * | 2021-06-11 | 2021-08-13 | 季华实验室 | Local inert gas protection system |
| CN113245564B (en) * | 2021-06-11 | 2021-10-12 | 季华实验室 | Local inert gas protection system |
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