CN105382405A - Stationary shaft shoulder assistant supporting inclined penetration friction-stir welding device and method - Google Patents
Stationary shaft shoulder assistant supporting inclined penetration friction-stir welding device and method Download PDFInfo
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- CN105382405A CN105382405A CN201511017317.7A CN201511017317A CN105382405A CN 105382405 A CN105382405 A CN 105382405A CN 201511017317 A CN201511017317 A CN 201511017317A CN 105382405 A CN105382405 A CN 105382405A
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- 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
- B23K20/122—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 using a non-consumable tool, e.g. friction stir welding
-
- 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
- B23K20/122—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 using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—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 using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
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- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a stationary shaft shoulder assistant supporting inclined penetration friction-stir welding device and method, relates to a friction-stir welding device and method, and aims at solving the problem that an existing friction-stir welding method is difficult in avoiding a non-welding-on defect, or the problem that although the non-welding-on defect can be avoided, overlarge thermal input and other defects are caused. The friction-stir welding device provided by the invention comprises a long-needle stirring head, a stationary shaft shoulder with a blind hole, a translation sliding block, a linear guideway and a positioning clamping apparatus. During welding, the liner guideway, a welded workpiece and the positioning clamping apparatus are stationary, and the long-needle stirring head, the stationary shaft shoulder and the translation sliding block move along a welding direction, so as to realize a welding process. The stationary shaft shoulder assistant supporting inclined penetration friction-stir welding method provided by the invention comprises the following steps: 1, assembly of the device; 2, fixing of the long-needle stirring head and the stationary shaft shoulder; 3, friction-stir welding. The device and the method, provided by the invention are used for friction-stir welding.
Description
Technical field
The present invention relates to a kind of agitating friction welder and method, be specifically related to a kind of static shaft shoulder supplemental support and tilt to penetrate agitating friction welder and method, belong to welding technology field.
Background technology
Friction stir welding method has that welding deformation is little, joint quality is high and the advantage such as green energy conservation, has a wide range of applications in the field such as Aero-Space and track traffic.But due to the restriction of Friction stir welding itself, the length of mixing needle used is generally all less than the thickness of welded piece to ensure that the shaft shoulder can obtain good appearance of weld with welded piece close contact.Be less than welded piece thickness just because of mixing needle length, be thus difficult to avoid forming non-seam defect at the root of weld, and this defect is difficult to because size is less adopt conventional detection method to find thus have larger potential safety hazard.Especially for plate sheet welding, the non-seam defect of root seriously can reduce joint bearing capacity, and for the joint bearing dynamic load, the non-seam defect of root seriously can reduce its fatigue behaviour.
For addressing this problem, patent " CN101947691A " discloses the self-sustaining friction stir welding method that a kind of upper and lower shaft shoulder diameter does not wait, obtain the joint not having the non-seam defect of root, but make welding joint softened serious because the heat production simultaneously of the upper and lower shaft shoulder causes heat input higher, cause joint mechanical property lower, and also there is the shortcoming that mixing needle easily ruptures in the method; Patent " CN102601515A " discloses a kind of lower shaft shoulder non-rotary self-sustaining agitating friction welding stirring-head and welding method thereof, reduce thermal weld stress due to lower shaft shoulder non rotating, but zero inclination angle welding can only be carried out due to double-shaft shoulder and cause forging and stamping effect deficiency to make joint easily occur the defects such as hole; Patent " CN103894726A " by using the backing plate of homogeneous material and in postwelding milling except the mode of backing plate eliminates the non-seam defect of root in welding process, but the method not only increases welding sequence and cost, and easily bottom workpiece, introduce Hook defect, cause joint performance to reduce on the contrary.Therefore, the present invention proposes a kind of static shaft shoulder supplemental support and tilts to penetrate friction stir welding method, while avoiding non-seam defect completely, effectively can reduce thermal weld stress, realize welding with angle, the welding point that final acquisition high-quality is high-strength.
Summary of the invention
The present invention proposes a kind of static shaft shoulder supplemental support and tilts to penetrate agitating friction welder and method, object is the problem that the existing friction stir welding method of solution is difficult to avoid non-seam defect, although or can avoid, but make the problem that heat input is excessive and cause other defect to be formed, design mixing needle length is greater than the stirring-head of welded piece thickness, and make mixing needle tilt to penetrate welded piece, welding axial load is born by the static shaft shoulder with blind hole below welded piece, while avoiding non-seam defect to be formed completely, obtain the friction stir welding that high-quality is high-strength.
The present invention is the technical scheme taked that solves the problem:
A kind of static shaft shoulder supplemental support tilts to penetrate agitating friction welder, it comprises minute hand stirring-head, the static shaft shoulder, translator slider, line slideway and positioning fixture, minute hand stirring-head is made up of the upper shaft shoulder and long mixing needle, long mixing needle is fixedly mounted on the lower end of the shaft shoulder, and long mixing needle and the upper shaft shoulder are coaxially arranged, the length of minute hand stirring-head mixing needle is greater than welded piece thickness, the cross section of the upper shaft shoulder and long mixing needle is circle, the center of the static shaft shoulder is processed with blind round hole, and static shaft shoulder diameter is not less than stirring-head shaft shoulder diameter, and blind hole diameter is greater than long mixing needle diameter, and blind hole depth is greater than the difference of long mixing needle length and welded piece thickness, two positioning fixtures are positioned opposite and be arranged on welding bench along welding direction, line slideway is arranged on the welding bench between two positioning fixtures along welding direction, translator slider is arranged on line slideway, the static shaft shoulder is arranged in translator slider, translator slider can be slided on line slideway, welded piece is arranged on the upper end of two positioning fixtures, minute hand stirring-head is arranged on welding machine, minute hand stirring-head, the peaceful slide block that moves of the static shaft shoulder is on same axis, during welding, welded piece, line slideway, positioning fixture and welding bench transfixion, the long mixing needle of minute hand stirring-head inserts the blind hole of the static shaft shoulder through welded piece, minute hand stirring-head, the peaceful slide block that moves of the static shaft shoulder moves along welding direction, until welded.
The diameter 5mm larger than the upper shaft shoulder diameter of minute hand stirring-head of the static shaft shoulder.
The diameter 4mm larger than the diameter of long mixing needle of static shaft shoulder blind hole.
The length of the long mixing needle of depth ratio of static shaft shoulder blind hole and the large 3mm of difference of welded piece thickness.
Present invention also offers a kind of static shaft shoulder supplemental support to tilt to penetrate friction stir welding method, it comprises the following steps:
The assembling of step one, device:
Translator slider is slipped into line slideway from side, and line slideway is fixed on along welding direction on the workbench of agitating friction welding, the both sides of two identical positioning fixture next-door neighbour line slideways are placed and fixed on the table, in welding process, the positioning fixture transfixion of line slideway and its both sides;
Fixing of step 2, minute hand stirring-head and the static shaft shoulder:
Minute hand stirring-head is fixed on friction stir welding machine, the static shaft shoulder is fixed in translator slider; Static shaft shoulder upper surface and positioning fixture upper end surface are in same level, and the peaceful slide block that moves of minute hand stirring-head, the static shaft shoulder is on coaxial line; In welding process, the static shaft shoulder is peaceful move slide block together linearly guide rail 4 slide, minute hand stirring-head and the static shaft shoulder is peaceful moves slide block synchronizing moving;
Step 3: agitating friction welds:
Be fixed on by welded piece on positioning fixture, welded piece lower surface and static shaft shoulder upper surface close contact, adjustment tilt angle also by selected welding condition input control system, starts welding button, carries out agitating friction welding.
Minute hand stirring-head 1 inclination angle be fixed on welding machine is 0.5 °-5 °.
The present invention has following beneficial effect:
The present invention is by design minute hand stirring-head and the static shaft shoulder with blind hole, mixing needle is enable to tilt to penetrate welded piece, both having avoided the simultaneously heat production of the upper and lower shaft shoulder of self-sustaining friction stir welding causes heat input higher and the problem that makes welding joint softened serious, turn avoid double-shaft shoulder can only carry out zero inclination angle welding and cause forging and stamping effect deficiency to make joint easily occur the problem of hole defect, also reduce the possibility of the fracture of mixing needle in welding process simultaneously.The present invention, while avoiding non-seam defect to be formed completely, effectively reduces thermal weld stress, realizes welding with angle, can obtain the friction stir welding that high-quality is high-strength.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation that the static shaft shoulder supplemental support of the present invention tilts to penetrate agitating friction welder; Fig. 2 is the Longitudinal cross section schematic that the static shaft shoulder supplemental support of the present invention tilts to penetrate agitating friction welder.
Wherein 1 is minute hand stirring-head, and 2 is the static shaft shoulder with blind hole, and 3 is translator slider, and 4 is line slideway, and 5 is positioning fixture, and 6 is welded piece, and 7 is welding bench.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 to Fig. 2 illustrates present embodiment, the static shaft shoulder supplemental support of one of present embodiment tilts to penetrate agitating friction welder, it is characterized in that: it comprises minute hand stirring-head 1, the static shaft shoulder 2, translator slider 3, line slideway 4 and positioning fixture 5, minute hand stirring-head 1 is made up of the upper shaft shoulder and long mixing needle, long mixing needle is fixedly mounted on the lower end of the shaft shoulder, and long mixing needle and the upper shaft shoulder are coaxially arranged, the length of minute hand stirring-head 1 mixing needle is greater than welded piece thickness; The cross section of the upper shaft shoulder and long mixing needle is circle;
The center of the static shaft shoulder 2 is processed with blind round hole, and the static shaft shoulder 2 diameter is not less than stirring-head 1 shaft shoulder diameter, and blind hole diameter is greater than long mixing needle diameter, and blind hole depth is greater than the difference of long mixing needle length and welded piece thickness;
Two positioning fixtures 5 are positioned opposite and be arranged on welding bench 7 along welding direction, line slideway 4 is arranged on the welding bench 7 between two positioning fixtures 5 along welding direction, translator slider 3 is arranged on line slideway 4, the static shaft shoulder 2 is arranged in translator slider 3, translator slider 3 can be slided on line slideway 4, welded piece 6 is arranged on the upper end of two positioning fixtures 5, minute hand stirring-head 1 is arranged on welding machine, minute hand stirring-head 1, the static shaft shoulder 2 and translator slider 3 are on same axis, during welding, welded piece 6, line slideway 4, positioning fixture 5 and welding bench 7 transfixion, the long mixing needle of minute hand stirring-head 1 inserts the blind hole of the static shaft shoulder 2 through welded piece 6, minute hand stirring-head 1, the static shaft shoulder 2 and translator slider 3 move along welding direction, until welded.
The minute hand stirring-head 1 of present embodiment refers to the stirring-head that mixing needle length is greater than welded piece thickness.
Detailed description of the invention two: composition graphs 1 to Fig. 2 illustrates present embodiment, the length of the long mixing needle of minute hand stirring-head 1 2mm larger than welded piece thickness in present embodiment, setting like this, can eliminate the non-seam defect of root, all the other are identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 1 to Fig. 2 illustrates present embodiment, the static shaft shoulder 2 end face diameter 5mm larger than the upper shaft shoulder diameter of minute hand stirring-head 1 of present embodiment.Setting like this, axial compressive force acts on the static shaft shoulder 2 completely, can obtain good appearance of weld.Other connected mode is identical with detailed description of the invention one or two.
Detailed description of the invention four: composition graphs 1 to Fig. 2 illustrates present embodiment, the blind hole diameter 4mm larger than the diameter of long mixing needle of the static shaft shoulder 2 of present embodiment.Setting like this, can effectively prevent from, between mixing needle side with blind hole sidewall, phase mutual friction occurs, thus reduces mixing needle wearing and tearing.Other connected mode and detailed description of the invention one, two or three identical.
Detailed description of the invention five: composition graphs 1 to Fig. 2 illustrates present embodiment, the blind hole depth of the static shaft shoulder 2 of present embodiment is than the length of long mixing needle and the large 3mm of the difference of welded piece thickness.Setting like this, can effectively prevent from, between mixing needle end face with blind hole bottom surface, phase mutual friction occurs, thus reduces mixing needle wearing and tearing.Other connected mode and detailed description of the invention one, two, three or four identical.
Detailed description of the invention six: composition graphs 1 to Fig. 2 illustrates present embodiment, the static shaft shoulder supplemental support of one of present embodiment tilts to penetrate friction stir welding method, and it comprises the following steps:
The assembling of step one, device:
Translator slider 3 is slipped into line slideway 4 from side, and line slideway 4 is fixed on along welding direction on the workbench 7 of agitating friction welding, the both sides that two identical positioning fixtures 5 are close to line slideway 4 are placed and fixed on the table 7, in welding process, positioning fixture 5 transfixion of line slideway 4 and its both sides;
Fixing of step 2, minute hand stirring-head and the static shaft shoulder:
Minute hand stirring-head 1 is fixed on friction stir welding machine, the static shaft shoulder 2 is fixed in translator slider 3; The static shaft shoulder 2 upper surface and positioning fixture 5 upper end surface are in same level, and minute hand stirring-head 1, the static shaft shoulder 2 and translator slider 3 are on coaxial line; In welding process, the static shaft shoulder 2 together with translator slider 3 linearly guide rail 4 slide, minute hand stirring-head 1 and the static shaft shoulder 2 and translator slider 3 synchronizing moving;
Step 3: agitating friction welds:
Be fixed on by welded piece 6 on positioning fixture 5, welded piece 6 lower surface and the static shaft shoulder 2 upper surface close contact, adjustment tilt angle also by selected welding condition input control system, starts welding button, carries out agitating friction welding.
Detailed description of the invention seven: composition graphs 1 to Fig. 2 illustrates present embodiment, minute hand stirring-head 1 inclination angle be fixed on welding machine of present embodiment is 0.5 °-5 °.Setting like this, effectively can strengthen the forging and stamping effect of shaft shoulder Resistance of Weld Metal, avoids producing the defects such as hole.Other connected mode is identical with detailed description of the invention five or six.
Detailed description of the invention eight: composition graphs 1 to Fig. 2 illustrates present embodiment, minute hand stirring-head 1 inclination angle be fixed on welding machine of present embodiment is 2 °.Setting like this, effectively can strengthen the forging and stamping effect of shaft shoulder Resistance of Weld Metal, avoids producing the defects such as hole.Other connected mode and detailed description of the invention five, six or seven identical.
Claims (8)
1. a static shaft shoulder supplemental support tilts to penetrate agitating friction welder, it is characterized in that: it comprises minute hand stirring-head (1), the static shaft shoulder (2), translator slider (3), line slideway (4) and positioning fixture (5), minute hand stirring-head (1) is made up of the upper shaft shoulder and long mixing needle, long mixing needle is fixedly mounted on the lower end of the shaft shoulder, and long mixing needle and the upper shaft shoulder are coaxially arranged, the mixing needle length of minute hand stirring-head (1) is greater than welded piece thickness; The cross section of the upper shaft shoulder and long mixing needle is circle;
The center of the static shaft shoulder (2) is processed with blind round hole, the static shaft shoulder (2) diameter is not less than stirring-head (1) shaft shoulder diameter, blind hole diameter is greater than long mixing needle diameter, and blind hole depth is greater than the difference of long mixing needle length and welded piece thickness;
Two positioning fixtures (5) are positioned opposite and be arranged on welding bench (7) along welding direction, line slideway (4) is arranged on the welding bench (7) between two positioning fixtures (5) along welding direction, translator slider (3) is arranged on line slideway (4), the static shaft shoulder (2) is arranged in translator slider (3), translator slider (3) can in the upper slip of line slideway (4), welded piece (6) is arranged on the upper end of two positioning fixtures (5), minute hand stirring-head (1) is arranged on welding machine, minute hand stirring-head (1), the static shaft shoulder (2) and translator slider (3) are on same axis, during welding, welded piece (6), line slideway (4), positioning fixture (5) and welding bench (7) transfixion, the long mixing needle of minute hand stirring-head (1) inserts the blind hole of the static shaft shoulder (2) through welded piece (6), minute hand stirring-head (1), the static shaft shoulder (2) and translator slider (3) move along welding direction, until welded.
2. the static shaft shoulder supplemental support of one according to claim 1 tilts to penetrate friction stir welding method, it is characterized in that: the length 2mm larger than welded piece thickness of the long mixing needle of minute hand stirring-head (1).
3. the static shaft shoulder supplemental support of one according to claim 1 tilts to penetrate friction stir welding method, it is characterized in that: the diameter 5mm larger than the upper shaft shoulder diameter of minute hand stirring-head (1) of the static shaft shoulder (2).
4. the static shaft shoulder supplemental support of one according to claim 1 tilts to penetrate friction stir welding method, it is characterized in that: the diameter 4mm larger than the diameter of long mixing needle of the static shaft shoulder (2) blind hole.
5. the static shaft shoulder supplemental support of one according to claim 1 tilts to penetrate friction stir welding method, it is characterized in that: the length of the long mixing needle of depth ratio of the static shaft shoulder (2) blind hole and the large 3mm of difference of welded piece thickness.
6. static shaft shoulder supplemental support tilts to penetrate a friction stir welding method, it is characterized in that: it comprises the following steps:
The assembling of step one, device:
Translator slider (3) is slipped into line slideway (4) from side, and line slideway (4) is fixed on along welding direction on the workbench (7) of agitating friction welding, the both sides of two identical positioning fixtures (5) next-door neighbour's line slideway (4) are placed and are fixed on workbench (7), in welding process, positioning fixture (5) transfixion of line slideway (4) and its both sides;
Fixing of step 2, minute hand stirring-head and the static shaft shoulder:
Minute hand stirring-head (1) is fixed on friction stir welding machine, the static shaft shoulder (2) is fixed in translator slider (3); The static shaft shoulder (2) upper surface and positioning fixture (5) upper end surface are in same level, and minute hand stirring-head (1), the static shaft shoulder (2) and translator slider (3) are on coaxial line; In welding process, the static shaft shoulder (2) and translator slider (3) be linearly guide rail (4) slip together, minute hand stirring-head (1) and the static shaft shoulder (2) and translator slider (3) synchronizing moving;
Step 3: agitating friction welds:
Welded piece (6) is fixed on positioning fixture (5), welded piece (6) lower surface and the static shaft shoulder (2) upper surface close contact, adjust tilt angle and the welding condition input control system that will select, start welding button, carry out agitating friction welding.
7. the static shaft shoulder supplemental support of one according to claim 6 tilts to penetrate friction stir welding method, it is characterized in that: minute hand stirring-head (1) inclination angle be fixed on welding machine is 0.5 °-5 °.
8. the static shaft shoulder supplemental support of one according to claim 7 tilts to penetrate friction stir welding method, it is characterized in that: minute hand stirring-head (1) inclination angle be fixed on welding machine is 2 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017317.7A CN105382405B (en) | 2015-12-29 | 2015-12-29 | A kind of static shaft shoulder Auxiliary support, which tilts, penetrates agitating friction welder and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017317.7A CN105382405B (en) | 2015-12-29 | 2015-12-29 | A kind of static shaft shoulder Auxiliary support, which tilts, penetrates agitating friction welder and method |
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| CN105382405A true CN105382405A (en) | 2016-03-09 |
| CN105382405B CN105382405B (en) | 2017-11-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676328A (en) * | 2019-02-12 | 2019-04-26 | 黄山学院 | A kind of inclined-plane workpiece surface modification method and device |
| CN109940261A (en) * | 2019-03-28 | 2019-06-28 | 哈尔滨工业大学 | A kind of device and method of dynamic support auxiliary Friction Stir Welding T connector |
| CN110039170A (en) * | 2019-03-28 | 2019-07-23 | 哈尔滨工业大学 | A kind of homogeneity fixture auxiliary single track Friction Stir Welding T connector device and method |
| WO2020015228A1 (en) * | 2018-07-15 | 2020-01-23 | 倪平涛 | Method for welding cylindrical body assembly of aluminum-alloy vehicle body of railway car by means of friction stir welding using stationary double-shoulder and four-shoulder stirring tool provided with auxiliary cord device |
| CN112475587A (en) * | 2020-11-11 | 2021-03-12 | 哈尔滨工业大学 | Friction stir welding device and method for applying argon protection to two sides of weld joint |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020015228A1 (en) * | 2018-07-15 | 2020-01-23 | 倪平涛 | Method for welding cylindrical body assembly of aluminum-alloy vehicle body of railway car by means of friction stir welding using stationary double-shoulder and four-shoulder stirring tool provided with auxiliary cord device |
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| CN109940261A (en) * | 2019-03-28 | 2019-06-28 | 哈尔滨工业大学 | A kind of device and method of dynamic support auxiliary Friction Stir Welding T connector |
| CN110039170A (en) * | 2019-03-28 | 2019-07-23 | 哈尔滨工业大学 | A kind of homogeneity fixture auxiliary single track Friction Stir Welding T connector device and method |
| CN110039170B (en) * | 2019-03-28 | 2021-07-13 | 哈尔滨工业大学 | Device and method for assisting single-pass friction stir welding of T-shaped joint by using homogeneous clamp |
| CN112475587A (en) * | 2020-11-11 | 2021-03-12 | 哈尔滨工业大学 | Friction stir welding device and method for applying argon protection to two sides of weld joint |
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| CN105382405B (en) | 2017-11-17 |
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