CN105436697A - Efficient heat-insulation friction stir welding head and method - Google Patents
Efficient heat-insulation friction stir welding head and method Download PDFInfo
- Publication number
- CN105436697A CN105436697A CN201510873379.1A CN201510873379A CN105436697A CN 105436697 A CN105436697 A CN 105436697A CN 201510873379 A CN201510873379 A CN 201510873379A CN 105436697 A CN105436697 A CN 105436697A
- Authority
- CN
- China
- Prior art keywords
- stirring
- head
- barrier coating
- clamping handle
- thermal barrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
Abstract
The invention discloses an efficient heat-insulation friction stir welding head. The efficient heat-insulation friction stir welding head comprises a machine tool contact part and a work part. The machine tool contact part comprises a stirring head clamping handle (1) and a clamping handle end (2). The work part comprises a shaft shoulder (3) and a stirring needle (4). The stirring head clamping handle (1), the clamping handle end (2), the shoulder (3) and the stirring needle (4) are sequentially fixed from top to bottom. The outer surfaces of the stirring head clamping handle (1) and the clamping handle end (2) are provided with thermal barrier coatings (5) respectively.
Description
Technical field
The present invention relates to a kind of agitating friction welding stirring-head, especially a kind of efficient, heat insulation stirring friction welding agitator head.
Background technology
Friction stir welding (FrictionStirWelding, be called for short FSW) be a kind of in welding process materials to be welded there is not the Solid-phase welding technology melted, stirring-head is the key tool in stir friction welding process.The principle that friction stir welding completes welding is, machine tool chief axis drives stirring friction welding agitator head High Rotation Speed, the mixing needle of stirring-head inserts weld seam simultaneously, the stirring-head shaft shoulder produces severe friction with materials to be welded surface and produces the heat required for welding, materials to be welded is made to be heated to high-ductility state, simultaneously the mixing needle of High Rotation Speed drives weld seam adjacent material that violent Plastic Flow occurs, and weld seam completes seam under its applied pressure because of the vigorous agitation of material and the shaft shoulder.In welding process, weld seam adjacent material is in high-ductility solid state and melts, therefore it is a kind of solid-state welding technology being different from melting, and compared to melting, friction stir welding has that consuming little energy, weld seam performance attractive in appearance are good, do not produce the advantages such as pernicious gas in welding process.
In stir friction welding process, stirring-head is in the condition of high temperature, and when welding aluminum alloy materials, the temperature of stirring-head and weld metal contact site is about 400 ~ 500 DEG C, and when the contour melting point metals of welding steel, stirring-head temperature can up to more than 1000 DEG C.Because of stirring-head operationally clamping on machine tool chief axis, the heat that stirring-head operationally produces inevitably can be transmitted to machine tool chief axis, thus cause machine tool chief axis temperature to raise, and the too high meeting of main shaft temperature has a strong impact on life-span and the machining accuracy of main shaft, at present for preventing main shaft temperature too high, generally adopt and carry out the modes such as water-cooling to main shaft and lower the temperature, the method not only equipment complexity cost is high, and its heat taken away from main shaft has also been wasted, and is unfavorable for the efficiency utilization of energy.
Thermal barrier coating (Thermalbarriercoatings, be called for short TBCs), be that one is used in surface of metal product usually, in order to reducing parent metal operating temperature, improve its heat fatigue and anti-oxidant, burn into polishing machine, there is the ceramic coating of good effect of heat insulation.Thermal Barrier Coating Technologies is used to rocket engine and gas turbine blades the earliest, in order to improve its high temperature resistant and decay resistance.At present, at turbine blade application thermal barrier coating, parent metal temperature can be reduced and reach about 170 DEG C.
Summary of the invention
The present invention be solve main shaft temperature in stir friction welding process too high and water-cooling adopts to main shaft time the cost high and problem that capacity usage ratio is low, devise a kind of efficient, heat insulation stirring friction welding agitator head.This stirring-head effectively can reduce the heat that stirring-head transmits to machine tool chief axis, prevents main shaft temperature too high, avoids the thermal loss produced when adopting the methods such as water-cooling to lower the temperature to main shaft simultaneously.
In order to solve the problems of the technologies described above, the invention provides a kind of efficient, heat insulation stirring friction welding agitator head, described stirring-head comprises and lathe contact site and working position; Describedly comprise stirring-head clamping handle, clamping handle end with lathe contact site; Described working position comprises the shaft shoulder, mixing needle; Described stirring-head clamping handle, clamping handle end, the shaft shoulder, mixing needle interfix from top to bottom successively; Described stirring-head clamping handle, clamping handle end outer surface arrange thermal barrier coating respectively.
Improvement as to efficient, heat insulation stirring friction welding agitator head of the present invention: described thermal barrier coating is the low thermal conductivity material of heat conductivility difference.
Further improvement as to efficient, heat insulation stirring friction welding agitator head of the present invention: the thickness of described thermal barrier coating is 50 ~ 500 μm.
Further improvement as to efficient, heat insulation stirring friction welding agitator head of the present invention: the structure of described thermal barrier coating comprises the double-decker be made up of tack coat and ceramic layer, the sandwich construction be made up of tack coat, layer of blockading, ceramic layer, and the gradient-structure be made up of tack coat and composition continually varying ceramic layer.
Further improvement as to efficient, heat insulation stirring friction welding agitator head of the present invention: described thermal barrier coating has and stirring-head clamping handle, clamping handle end integrative-structure formula or separable structure formula two kinds of combinations.
Further improvement as to efficient, heat insulation stirring friction welding agitator head of the present invention: described thermal barrier coating is arranged by plasma spraying method, electro beam physics vapour deposition method, HVAF method, laser remelting process or chemical vapour deposition technique.
Further improvement as to efficient, heat insulation stirring friction welding agitator head of the present invention: described thermal barrier coating is with 6 ~ 8%Y
2o
3stable ZrO
2ceramic heat-barrier coating.
A thermal barrier coating processing method for efficient, heat insulation stirring friction welding agitator head, removes certain thickness by stirring-head clamping handle; Pretreatment is carried out to the metal base surface of stirring-head clamping handle; Preheating is carried out to stirring-head; With plasma spraying method, certain thickness thermal barrier coating is sprayed equably to stirring-head clamping handle.
Improvement as the thermal barrier coating processing method to a kind of efficient, heat insulation stirring friction welding agitator head: the thickness that described stirring-head clamping handle is removed is the thickness of thermal barrier coating.
Further improvement as the thermal barrier coating processing method to a kind of efficient, heat insulation stirring friction welding agitator head: described pre-treatment step comprises removing surface and oil contaminant, rust, oxide layer etc. and effects on surface carries out roughening treatment.
The present invention sprays certain thickness thermal barrier coating at the position that stirring-head contacts with machine tool chief axis, and the composition of this thermal barrier coating is including but not limited to 6 ~ 8%Y
2o
3stable ZrO
2ceramic heat-barrier coating, the method of thermal barrier coating is processed including but not limited to plasma spraying method, electro beam physics vapour deposition method etc. to stirring-head, the structure of this thermal barrier coating is including but not limited to the double-decker be made up of tack coat and ceramic layer, the sandwich construction be made up of tack coat, blockade layer, ceramic layer etc., and the gradient-structure be made up of tack coat and composition continually varying ceramic layer.By this structure, the potent thermal insulation layer formed, the speed of high temperature in communication process in use produced is slowed down greatly, in process, do not need the effect namely being realized cooling by other cooling process, the service life of great prolongation relevant device, and the cost of manufacturing procedure can not be increased.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation of typical agitation friction welding stirring-head;
Fig. 2 is stirring-head clamping handle position of the present invention part sectioned view.
Detailed description of the invention
Embodiment 1, Fig. 1 ~ Fig. 2 provide a kind of efficient, heat insulation stirring friction welding agitator head and method.
As shown in Figure 1, be the structural representation of efficient, heat insulation stirring friction welding agitator head, comprise stirring-head clamping handle 1, clamping handle end 2, the shaft shoulder 3, mixing needle 4.Stirring-head clamping handle 1, clamping handle end 2, the shaft shoulder 3, mixing needle 4 are mutually permanently connected successively with order from top to bottom.Its stirring-head clamping handle 1, clamping handle end 2 are the positions contacted with machine tool chief axis.In stir friction welding process, the end face of the stirring-head shaft shoulder 3 and mixing needle produce the heat required for welding with material generation severe friction, produce heat wherein a part be delivered to welded piece, some is transmitted to machine tool chief axis by stirring-head (clamping handle end 2, stirring-head clamping handle 1), this part heat being transmitted to machine tool chief axis does not only play a driving role to welding, and machine tool chief axis temperature also can be caused to raise thus affect its life-span.
As shown in Figure 2, New type agitation head of the present invention in FIG stirring-head clamping handle 1, clamping handle end 2 position spraying thermal barrier coating 5, this thermal barrier coating 5 because of its thermal conductivity low, can significantly reduce the heat being transmitted to machine tool chief axis in stir friction welding process by stirring-head, thus avoid because main shaft temperature is too high and then affect the problem in its life-span.Use this invention described agitating friction welding stirring-head to weld, owing to fundamentally avoiding the too high problem of main shaft temperature, main shaft, without the need to carrying out extra cooling again, decreases input and the maintenance cost of spindle cooling device.Meanwhile, adopt the invention process welding can reduce because stirring-head conduct heat the thermal loss caused to main shaft, be conducive to energy utilization efficiency when improving welding, thus under the prerequisite not reducing property of welded joint, reduce energy consumption or raising welding efficiency.
As shown in Figure 2, the present invention in FIG 1 and 2 position increase thermal barrier coating 5.
Concrete, the material of this thermal barrier coating 5 is with 6 ~ 8%Y
2o
3stable ZrO
2ceramic heat-barrier coating 5; The spraying method of this coating is plasma spraying method; The thickness of this coating is 50 ~ 500 μm.
Its concrete processing method is:
1. with lathe etc., stirring-head clamping handle 1, position, clamping handle end 2 removal certain thickness in Fig. 1 are sprayed thermal barrier coating 5 slot milling to give, or directly process the stirring-head being applicable to spraying size;
2. need the metal base surface spraying thermal barrier coating 5 to carry out pretreatment in couple Fig. 2, this pretreatment comprises removing surface and oil contaminant, rust, oxide layer etc. and effects on surface carries out roughening treatment with satisfied spraying requirement;
3. before spraying, preheating is carried out to stirring-head;
4. with plasma spraying method, certain thickness thermal barrier coating 5 is sprayed equably to the position shown in 1 in stirring-head Fig. 2.
The certain thickness of above-described thermal barrier coating 5 is consistent with the certain thickness removed on stirring-head clamping handle 1, clamping handle end 2, make it possible to existing stirring-head in this way reequip, make it adapt to the processing environment of this set thermal insulation layer, and unnecessaryly improve relevant device to adapt to this stirring-head.
In contrast to the friction welding (FW) stirring-head in prior art, the thermal insulation layer technology of stirring-head of the present invention owing to adopting, stop the high temperature produced in the actual use procedure of stirring-head to machine tool chief axis transmission, extend the service life of machine tool chief axis, and under the prerequisite not increasing external cooling system, just can reach the constructed effect of external cooling system.And in the present invention, thickness for thermal insulation layer is set to 50 ~ 500 μm, mechanical damage can not be produced to stirring-head during the thermal insulation layer process of this thickness, and time in concrete, the situation that original clamping apparatus cannot mate this stirring-head completely also can not be caused to occur because thermal insulation layer causes the metallic character generation great variety of stirring-head.
Finally, it is also to be noted that what enumerate above is only a specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (10)
1. efficient, a heat insulation stirring friction welding agitator head, is characterized in that: described stirring-head comprises and lathe contact site and working position;
Describedly comprise stirring-head clamping handle (1), clamping handle end (2) with lathe contact site;
Described working position comprises the shaft shoulder (3), mixing needle (4);
Described stirring-head clamping handle (1), clamping handle end (2), the shaft shoulder (3), mixing needle (4) interfix from top to bottom successively;
Described stirring-head clamping handle (1), clamping handle end (2) outer surface arrange thermal barrier coating (5) respectively.
2. efficient, heat insulation stirring friction welding agitator head according to claim 1, is characterized in that: the low thermal conductivity material that described thermal barrier coating (5) is heat conductivility difference.
3. efficient, heat insulation stirring friction welding agitator head according to claim 2, is characterized in that: the thickness of described thermal barrier coating (5) is 50 ~ 500 μm.
4. efficient, heat insulation stirring friction welding agitator head according to claim 3, it is characterized in that: the structure of described thermal barrier coating (5) comprises the double-decker be made up of tack coat and ceramic layer, the sandwich construction be made up of tack coat, layer of blockading, ceramic layer, and the gradient-structure be made up of tack coat and composition continually varying ceramic layer.
5. efficient, heat insulation stirring friction welding agitator head according to claim 4, is characterized in that: described thermal barrier coating (5) has and stirring-head clamping handle (1), clamping handle end (2) integrative-structure formula or separable structure formula two kinds of combinations.
6. efficient, heat insulation stirring friction welding agitator head according to claim 5, is characterized in that: described thermal barrier coating (5) is arranged by plasma spraying method, electro beam physics vapour deposition method, HVAF method, laser remelting process or chemical vapour deposition technique.
7. efficient, heat insulation stirring friction welding agitator head according to claim 6, is characterized in that: described thermal barrier coating (5) is with 6 ~ 8%Y
2o
3stable ZrO
2ceramic heat-barrier coating.
8. a thermal barrier coating processing method for efficient, heat insulation stirring friction welding agitator head, is characterized in that: stirring-head clamping handle (1) is removed certain thickness;
Pretreatment is carried out to the metal base surface of stirring-head clamping handle (1);
Preheating is carried out to stirring-head;
With plasma spraying method, certain thickness thermal barrier coating (5) is sprayed equably to stirring-head clamping handle (1).
9. the thermal barrier coating processing method of efficient, heat insulation stirring friction welding agitator head according to claim 8, is characterized in that: the thickness that described stirring-head clamping handle (1) is removed is the thickness of thermal barrier coating (5).
10. the thermal barrier coating processing method of efficient, heat insulation stirring friction welding agitator head according to claim 9, is characterized in that: described pre-treatment step comprises removing surface and oil contaminant, rust, oxide layer etc. and effects on surface carries out roughening treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873379.1A CN105436697A (en) | 2015-12-02 | 2015-12-02 | Efficient heat-insulation friction stir welding head and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873379.1A CN105436697A (en) | 2015-12-02 | 2015-12-02 | Efficient heat-insulation friction stir welding head and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105436697A true CN105436697A (en) | 2016-03-30 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510873379.1A Pending CN105436697A (en) | 2015-12-02 | 2015-12-02 | Efficient heat-insulation friction stir welding head and method |
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| JP2010194591A (en) * | 2009-02-26 | 2010-09-09 | Kyocera Corp | Tool and apparatus for friction stir welding |
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| CN103789715A (en) * | 2014-02-10 | 2014-05-14 | 江苏大学 | Anti-oxidization thermal barrier coating material with long service life and preparation method thereof |
| CN103930234A (en) * | 2011-11-11 | 2014-07-16 | 山特维克知识产权股份有限公司 | Friction stir welding tool made of cemented tungsten carbid with nickel and with an AL203 surface coating |
| CN203830902U (en) * | 2014-05-12 | 2014-09-17 | 东莞市闻誉实业有限公司 | Friction stir cutter |
| CN104498858A (en) * | 2014-12-02 | 2015-04-08 | 佛山铭乾科技有限公司 | Nano-ceramic thermal barrier coating and preparation method thereof |
| CN205551782U (en) * | 2015-12-02 | 2016-09-07 | 浙江理工大学 | High -efficient, thermal -insulated friction stir welding stirring head |
-
2015
- 2015-12-02 CN CN201510873379.1A patent/CN105436697A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631601A (en) * | 2000-05-08 | 2005-06-29 | 布莱阿姆青年大学 | Friction stir welding using a superabrasive tool |
| JP2004082144A (en) * | 2002-08-23 | 2004-03-18 | Hitachi Cable Ltd | Tool and method for friction stir welding |
| EP1430986A1 (en) * | 2002-12-20 | 2004-06-23 | Hitachi, Ltd. | Friction stir welding method for reducing the friction force |
| CN101394963A (en) * | 2006-01-31 | 2009-03-25 | Sii米加钻石公司 | Thermally enhanced tool for friction stirring |
| JP2010194591A (en) * | 2009-02-26 | 2010-09-09 | Kyocera Corp | Tool and apparatus for friction stir welding |
| CN102655977A (en) * | 2009-12-17 | 2012-09-05 | 住友电气工业株式会社 | Coated rotary tool |
| CN102107328A (en) * | 2009-12-23 | 2011-06-29 | 中国科学院金属研究所 | Combined type welding tool used for friction stir welding of metal matrix composite |
| CN103930234A (en) * | 2011-11-11 | 2014-07-16 | 山特维克知识产权股份有限公司 | Friction stir welding tool made of cemented tungsten carbid with nickel and with an AL203 surface coating |
| CN103789715A (en) * | 2014-02-10 | 2014-05-14 | 江苏大学 | Anti-oxidization thermal barrier coating material with long service life and preparation method thereof |
| CN203830902U (en) * | 2014-05-12 | 2014-09-17 | 东莞市闻誉实业有限公司 | Friction stir cutter |
| CN104498858A (en) * | 2014-12-02 | 2015-04-08 | 佛山铭乾科技有限公司 | Nano-ceramic thermal barrier coating and preparation method thereof |
| CN205551782U (en) * | 2015-12-02 | 2016-09-07 | 浙江理工大学 | High -efficient, thermal -insulated friction stir welding stirring head |
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Application publication date: 20160330 |
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