CN101982284B - Repair welding method and welding tool of stirring friction plug for friction preheating of telescopic shaft shoulder - Google Patents
Repair welding method and welding tool of stirring friction plug for friction preheating of telescopic shaft shoulder Download PDFInfo
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- CN101982284B CN101982284B CN2010105319477A CN201010531947A CN101982284B CN 101982284 B CN101982284 B CN 101982284B CN 2010105319477 A CN2010105319477 A CN 2010105319477A CN 201010531947 A CN201010531947 A CN 201010531947A CN 101982284 B CN101982284 B CN 101982284B
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Abstract
The invention provides a repair welding method and a welding tool of a stirring friction plug for friction preheating of a telescopic shaft shoulder, which relates to a repair welding method and a welding tool of a filling type stirring friction plug. The invention solves the problems that in the repair welding process of the filling type stirring friction plug, strong resistance causes a stirring needle to be broken when the stirring needle does not completely plastic deformation so that the continuous fluidity of materials is poor. The method comprises the following steps: (1) taking the same materials for the stirring needle and the repair welded part; (2) punching a conical defect repair preset hole; (3) determining the size of the stirring needle; (4) positioning the conical defect repair preset hole; (5) preheating by friction; and (6) carrying out repair welding. The welding tool is characterized in that an upper circular ring on the telescopic shaft shoulder is connected with a lower cylinder on a clamping body of the welding tool through a key, a spring is arranged between the upper end surface of a lower circular ring on the telescopic shaft shoulder and the lower end surface of the lower cylinder, the lower cylinder is connected with the outer surface of the lower circular ring by a limiting plate, and a stirring body is arranged in a clamping hole on the clamping body of the welding tool and a through hole on the telescopic shaft shoulder. The invention is used for stirring friction welding of welded seam keyholes and repair welding of defects.
Description
Technical field
The present invention relates to the method and the soldering set thereof of the repair welding of a kind of filled type friction stir plug, be used for the repair welding of stir friction welding seam keyhole and defective.
Background technology
Since Britain's institute of welding (TWI) was invented friction stir welding method in 1991; This technology is little because of its welding deformation, residual stress is little; Need not protective gas and packing material; Can eliminate pore, be mingled with, weld defect such as crackle, and do not produce arc light, flue dust, noise pollution etc., the characteristics of can significantly reduce cost simultaneously, save material, optimizing structure, alleviate aircraft such as construction weight receive the concern of various countries scientific research institution.Because this technology has the not available distinguishing feature of a lot of additive methods, it is used to space industry soon, and the welding of carrier rocket core level tank tube section longitudinal joint of new generation is exactly to select this method for use.Although utilize friction stir welding method can obtain the high quality welding joint, in the engineering practical operation, be difficult to avoid fully the generation of weld defect, particularly keyhole, be difficult to especially eliminate.Mainly contain with the method that solves stir friction welding seam keyhole and weld defect on the engineering: melting welding, friction plug weld, pumpback formula soldering set friction stir welding and the repair welding of filled type friction stir plug.
According to [model is regulated. friction plug weld research and development and key issue. and the space flight manufacturing technology; 2007; 1,34-37] described in content can know: the mode that melting welding generally selects for use argon tungsten-arc welding (TIG) to fill silk realizes that current most weld defects all adopt traditional hand TIG weldering to repair.This method is easy and simple to handle, but hot input quantity is big, is prone to cause weld seam regional area grain growth, and toughness reduces, and can cause bigger residual stress and distortion at the repair welding position simultaneously.In addition, the manual TIG repair welding is once success often, and some aluminium alloy can not carry out repeatedly repair welding; Too much repair welding meeting causes joint alloying element scaling loss; Have a strong impact on joint quality, even cause product rejection, thereby cause significantly improving and the prolongation of production cycle of product cost.
According to [P J.Hartley.Friction plug weld repair for the space shuttle external tank.Weld.Metal Fabrication; 2002,9,6-8] described in content can know: friction plug weld belongs to solid phase and connects; In the process of patch weld metal molten can not appear; Weld residual stress is low, workpiece deformation is little, significantly improves mechanical property, fatigue strength, fracture toughness and the joint plasticity of repair welding weld seam, and welding parameter can accurately be controlled; Technology stability and repeatability are high, have improved the once successful probability of repair welding.But the method needs secondary operations because whole stopper is placed the repair welding position, unnecessary stopper is removed, and owing to the stressed regional area that only is confined to the consent sidewall in the plug welding process, it is serious to cause the repair welding regional stress to be concentrated, and has influenced the mechanical property of joint.And the method need be carried out urgency and stopped when applying upset force, need special equipment, on conventional friction stir welding machine, can't realize.
According to [UEMAT SU Y, TOKAJI K, TOZAKI Y; KURITA T, MURATA S.Effect of re-filling probe kole on tensile failure and fatigue behaviour of friction stir welded j oints in Al-Mg-Si alloy.Int.J.Fat.2008,30; 1956-1966] described in content can know: pumpback formula soldering set agitating friction is welded in the welding process identical with conventional friction stir welding; Just in welding ending place, pumpback gradually in the mixing needle rotary course is through the backfill of shaft shoulder bottom plastic metal; Realize the filling of keyhole; But realization that should technology not only needs complicated control system and dynamical system and corresponding frame for movement, and owing to do not have abundant plastic metal realization backfill, though keyhole has been eliminated; But cause the attenuation of weld seam afterbody joint effective thickness, still do not have thoroughly to eliminate the influence of keyhole.
According to the patent No. is 200910308559X; Publication number is CN101670483; Disclosed content can be known in the title " filled type friction stir plug repair method and soldering set thereof ": can not realize the solid phase repair welding to keyhole and defective though do not possess the friction stir plug repair welding of preheating link; But the strong resistance of repair welding part material can cause mixing needle not perfect plasticity distortion just rupture, make the continuous flow variation of material, reduce the mechanical property of joint.
Summary of the invention
The objective of the invention is for solving in the filled type friction stir plug process of patch weld; Owing to the repair welding part material is not carried out preheating; Its strong resistance can cause mixing needle not perfect plasticity distortion just rupture; Make the continuous flow variation of material, cause the problem of welding joint mechanical property difference, a kind of scalable shaft shoulder friction preheating friction stir plug repair method and soldering set thereof are provided.
Method of the present invention realizes through following steps: one, choosing of mixing needle material: the material of mixing needle is with identical by the part material of repair welding; Two, open taper defect repair preset holes: made a locating hole by the weld defect place of repair welding, it is taper hole that locating hole is expanded, and this taper hole is the taper defect repair preset holes of treating repair welding; Three, confirm the size of mixing needle: the exterior contour size of mixing needle should be greater than the in-profile size of taper defect repair preset holes; Four, taper defect repair preset holes is located: make the dead in line of taper defect repair preset holes and mixing needle; Five, friction preheating: when the lower surface of the flexible shaft shoulder begins to contact with surface of the work; Mixing needle does not also contact with taper defect repair preset holes sidewall; Spring generation strain between the soldering set cramping body and the flexible shaft shoulder; The elastic deformation force acts on the upper surface of the following annulus on the flexible shaft shoulder; Make down between lower surface and the surface of the work of annulus and produce relative rubbing action, utilize frictional heat near the heating that rubs of the material taper defect repair preset holes, thereby realization is to the preheating of taper defect repair preset holes; Six, repair welding: after warm finishes; Along with being pressed into gradually of soldering set, the conical section of mixing needle from through hole, stretch out fully and outside be exposed at down outside the lower surface of annulus, mixing needle closely contacts with the taper defect repair preset holes inner-wall material of treating repair welding; And agitating friction; The plastic deformation phenomenon appears in the interface zone metal, under the effect of the lower surface of the flexible shaft shoulder and the heat production of surface of the work agitating friction and mixing needle and the heat production of taper defect repair preset holes sidewall agitating friction, and under the effect of torsional shear power; The conical section complete filling of the mixing needle after the plastic deformation is in taper defect repair preset holes; Make soldering set move 1mm～5mm along welding direction at last, realize the repair welding to stir friction welding seam defective and keyhole, soldering set is mentioned; Spring is in relaxed state, stirs needle handle and leaves in the clamping hole of soldering set cramping body.
Soldering set of the present invention comprises soldering set cramping body, the flexible shaft shoulder, stirring body, spring, four limiting plates and at least four keys, and said stirring body is made up of mixing needle and stirring needle handle, stirs needle handle and mixing needle and processes one from top to bottom; The outer surface that stirs needle handle is provided with the mixing needle clamping face, and mixing needle is a cone, and said soldering set cramping body is made up of coaxial last cylinder and following cylinder; Go up cylindrical diameter less than following cylindrical diameter, last cylinder is processed one with following cylinder, goes up cylindrical outer surface and is provided with the soldering set clamping face; Place, down cylindrical axle center is provided with shoulder hole, and shoulder hole is respectively annulus hole and clamping hole from the bottom to top, and the sidewall of clamping hole is provided with the tapped through hole perpendicular to following cylinder axis; Be laid with at least four inside grooves on the inwall in last annulus hole, the flexible shaft shoulder is made up of coaxial last annulus and following annulus, and the external diameter of last annulus is less than the external diameter of following annulus; Last annulus and following annulus are processed one, and the outer surface of last annulus is laid with and four inside grooves water jacket one to one at least, and the last annulus on the shaft shoulder that stretches is arranged in the annulus hole; Each is equipped with a key in water jacket and the inside groove one to one; The external diameter of following annulus equates with following cylindrical external diameter, the place, axle center of the flexible shaft shoulder be provided with clamping hole over against and the through hole that equates of aperture, spring is between the upper surface of cylindrical lower surface and following annulus down; And spring housing is contained on the annulus; The external diameter of following annulus equates that with following cylindrical external diameter each limiting plate is provided with slotted hole, and four limiting plates are uniformly distributed with and are arranged on down annulus and following cylindrical outer surface; The upper end of each limiting plate is connected limiting plate through screw with following cylinder; The lower end of each limiting plate is connected limiting plate through screw with following annulus, and the screw on each limiting plate all passes slotted hole, and the stirring needle handle on the stirring body is arranged in through hole and the clamping hole; And mixing needle clamping face and tapped through hole over against, 2/3rds conical sections of mixing needle expose to down outside the lower surface of annulus.
The present invention has the following advantages: one, the present invention through the flexible shaft shoulder 2 with treat the mutual friction realization preheating mutually of repair welding region surface; Make and treat repair welding region material generation plastic deformation; And then reduce its resistance to mixing needle; Thereby be prone to make the repair welding region material that sufficient plastic flowing takes place, form well behaved repair welding joint, fundamentally solved in the filled type friction stir plug process of patch weld; The powerful resistance at repair welding position cause mixing needle not perfect plasticity distortion just rupture, cause the problem of welding joint mechanical property difference.Two, utilize method of the present invention and soldering set thereof can realize rubbing preheating and filled type friction stir plug repair welding integrated design, simplified repair welding, improved technology stability and repeatability, adaptability is strong.Three, the repair welding of scalable shaft shoulder friction preheating friction stir plug is the same with friction stir welding and friction plug weld, belongs to solid phase and connects, and does not occur metal molten in the welding process; And under the agitating friction effect of the shaft shoulder; Weld residual stress reduces, workpiece deformation reduces, and has significantly improved the mechanical property of repair welding weld seam, for aluminium alloy; Repair welding strength of joint coefficient has reached 0.75, repair welding joint percentage elongation >=5%.
Description of drawings
Fig. 1 is the soldering set structure master cutaway view of scalable shaft shoulder friction preheating friction stir plug repair welding;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is that the K of Fig. 1 is to view;
Fig. 4 is structure master's cutaway view of stirring body 3;
Fig. 5 is the soldering set warm state diagram of scalable shaft shoulder friction preheating friction stir plug repair welding;
Fig. 6 is the soldering set process of patch weld state diagram of scalable shaft shoulder friction preheating friction stir plug repair welding;
Fig. 7 is state diagram after the soldering set repair welding of scalable shaft shoulder friction preheating friction stir plug repair welding.
The specific embodiment
The specific embodiment one: combine Fig. 1, Fig. 5, Fig. 6 and Fig. 7 that this embodiment is described, this embodiment is realized through following steps: one, choosing of mixing needle material: the material of mixing needle 3-1 is with identical by the part material of repair welding; Two, open taper defect repair preset holes: made a locating hole by the weld defect place of repair welding, using type to bore the locating hole expansion is that taper hole, this taper hole are the taper defect repair preset holes of treating repair welding according to the repair welding demand; Three, confirm the size of mixing needle: the exterior contour size of mixing needle 3-1 should have abundant friction and enough loadings in order to guarantee mixing needle and defect repair preset holes greater than the in-profile size of taper defect repair preset holes; Four, taper defect repair preset holes is located: make the dead in line of taper defect repair preset holes and mixing needle 3-1; Five, friction preheating: when the lower surface of the flexible shaft shoulder 2 begins to contact with surface of the work; Mixing needle 3-1 does not also contact with taper defect repair preset holes sidewall; Strain takes place in the spring 4 that the soldering set cramping body 1 and the flexible shaft shoulder are 2; The elastic deformation force acts on the upper surface of the following annulus 2-2 on the flexible shaft shoulder 2, makes down the relative rubbing action of generation between lower surface and the surface of the work of annulus 2-2, utilizes frictional heat near the heating that rubs of the material taper defect repair preset holes; Thereby realize the preheating to taper defect repair preset holes, the soldering set state is as shown in Figure 5; Six, repair welding: after warm finishes,, as shown in Figure 6 along with being pressed into gradually of soldering set; The conical section of mixing needle 3-1 from through hole 2-3, stretch out fully and outside be exposed at down outside the lower surface of annulus 2-2, mixing needle 3-1 closely contacts with the taper defect repair preset holes inner-wall material of treating repair welding, and agitating friction; The plastic deformation phenomenon appears in the interface zone metal, under the effect of the lower surface of the flexible shaft shoulder 2 and the heat production of surface of the work agitating friction and mixing needle 3-1 and the heat production of taper defect repair preset holes sidewall agitating friction, and under the effect of torsional shear power; The conical section complete filling of mixing needle 3-1 after the plastic deformation is in taper defect repair preset holes; For making material that better plastic flowing take place, make soldering set move 1mm～5mm at last along welding direction, realize repair welding to stir friction welding seam defective and keyhole; Soldering set is mentioned; Spring 4 is in relaxed state, stirs needle handle and leaves in the clamping hole 1-2-2 of soldering set cramping body 1, and the soldering set state is as shown in Figure 7.
The specific embodiment two: combine Fig. 1～Fig. 4 that this embodiment is described, this embodiment comprises soldering set cramping body 1, the flexible shaft shoulder 2, stirring body 3, spring 4, four limiting plates 5 and at least four keys 6, stirring body 3 by mixing needle 3-1 with stir needle handle 3-2 and form; Stir needle handle 3-2 and mixing needle 3-1 and process one from top to bottom; The outer surface that stirs needle handle 3-2 is provided with mixing needle clamping face 3-2-1, and mixing needle 3-1 is a cone, and soldering set cramping body 1 is made up of coaxial last cylinder 1-1 and following cylinder 1-2; The diameter of last cylinder 1-1 is less than the diameter of following cylinder 1-2; Last cylinder 1-1 and following cylinder 1-2 process one, and the outer surface of last cylinder 1-1 is provided with soldering set clamping face 1-1-1, and the place, axle center of following cylinder 1-2 is provided with shoulder hole; Shoulder hole is respectively annulus hole 1-2-1 and clamping hole 1-2-2 from the bottom to top; The sidewall of clamping hole 1-2-2 is provided with the tapped through hole 1-2-3 perpendicular to following cylinder 1-2 axis, is laid with at least four inside groove 1-2-1-1 on the inwall of last annulus hole 1-2-1, and the flexible shaft shoulder 2 is made up of coaxial last annulus 2-1 and following annulus 2-2; The external diameter of last annulus 2-1 is less than the external diameter of following annulus 2-2; Last annulus 2-1 and following annulus 2-2 process one, and the outer surface of last annulus 2-1 is laid with and four inside groove 1-2-1-1 water jacket 2-1-1 one to one at least, and the last annulus 2-1 on the shaft shoulder 2 that stretches is arranged among the 1-2-1 of annulus hole; Each is equipped with a key 6 among water jacket 2-1-1 and the inside groove 1-2-1-1 one to one; The external diameter of following annulus 2-2 equates with the external diameter of following cylinder 1-2, the place, axle center of the flexible shaft shoulder 2 be provided with clamping hole 1-2-2 over against and the through hole 2-3 that equates of aperture, clamping hole 1-2-2 and through hole 2-3 are used to place stirring body 3; Spring 4 is between the upper surface of the lower surface of descending cylinder 1-2 and following annulus 2-2; And spring 4 is sleeved on the annulus 2-1, and the external diameter of following annulus 2-2 equates that with the external diameter of following cylinder 1-2 each limiting plate 5 is provided with slotted hole 5-1; Four limiting plates 5 are uniformly distributed with the outer surface that is arranged on down annulus 2-2 and following cylinder 1-2; The upper end of each limiting plate 5 is connected limiting plate 5 through screw with following cylinder 1-2, the lower end of each limiting plate 5 is connected limiting plate 5 through screw with following annulus 2-2, and the screw on each limiting plate 5 all passes slotted hole 5-1; The screw that is positioned at the below on each limiting plate 5 can drive the flexible shaft shoulder 2 and move up and down along slotted hole 5-1; Stirring needle handle 3-2 on the stirring body 3 is arranged among through hole 2-3 and the clamping hole 1-2-2, and mixing needle clamping face 3-2-1 and tapped through hole 1-2-3 over against, 2/3rds conical sections of mixing needle 3-1 expose to down outside the lower surface of annulus 2-2.Bolt 7 tightens together stirring body 3 through tapped through hole 1-2-3 with following cylinder 1-2.When the lower surface of annulus 2-2 begins to contact with surface of the work instantly; Mixing needle 3-1 does not also contact with taper defect repair preset holes sidewall; But strain has taken place in spring 4, and the elastic deformation force acts on down on the upper surface of annulus 2-2, makes down between lower surface and the surface of the work of annulus 2-2 and produces relative rubbing action; Utilize frictional heat near the heating that rubs of the material taper defect repair preset holes, thereby realize preheating the defect repair preset holes.
The specific embodiment three: combine Fig. 1 that this embodiment is described, the lower surface of the following annulus 2-2 of this embodiment is provided with the spill shaft shoulder face 2-2-1 that outward flange is higher than the center.Spill shaft shoulder face 2-2-1 has effectively prevented the outflow of the material after the mixing needle 3-1 plastification.Other composition and annexation are identical with the specific embodiment two.
The specific embodiment four: combine Fig. 1 that this embodiment is described; Place, the axle center of soldering set cramping body 1 upper surface of this embodiment be provided with following cylinder 1-2 on the material returned hole 1-3 that communicates of clamping hole 1-2-2, and the bore dia of material returned hole 1-3 is less than the bore dia of clamping hole 1-2-2.After repair welding is accomplished, can release, be convenient to change stirring body 3 from the stirring needle handle 3-2 that material returned hole 1-3 will be retained in the clamping hole 1-2-2.Other composition and annexation are identical with the specific embodiment two or three.
The specific embodiment five: combine Fig. 1 that this embodiment is described, the soldering set cramping body 1 of this embodiment and the material of the flexible shaft shoulder 2 are high-speed steel.The soldering set cramping body 1 and the flexible shaft shoulder 2 can adopt the high-speed steel of W18Cr4V, W6Mo5Cr4V2, the W9Mo3Cr4V trade mark, and the high-speed-steel structure of above-mentioned material can be reused.The material of stirring body 3 is with identical by the part material of repair welding.Other composition and annexation are identical with the specific embodiment four.
Claims (5)
1. scalable shaft shoulder friction preheating friction stir plug repair method, it is characterized in that: said method realizes through following steps: one, choosing of mixing needle material: the material of mixing needle (3-1) is with identical by the part material of repair welding; Two, open taper defect repair preset holes: made a locating hole by the weld defect place of repair welding, it is taper hole that locating hole is expanded, and this taper hole is the taper defect repair preset holes of treating repair welding; Three, confirm the size of mixing needle: the exterior contour size of mixing needle (3-1) should be greater than the in-profile size of taper defect repair preset holes; Four, taper defect repair preset holes is located: make the dead in line of taper defect repair preset holes and mixing needle (3-1); Five, friction preheating: when the lower surface of the flexible shaft shoulder (2) begins to contact with surface of the work; Mixing needle (3-1) does not also contact with taper defect repair preset holes sidewall; Strain takes place in the spring (4) between the soldering set cramping body (1) and the flexible shaft shoulder (2); The elastic deformation force acts on the upper surface of the following annulus (2-2) on the flexible shaft shoulder (2); Make down between lower surface and the surface of the work of annulus (2-2) and produce relative rubbing action, utilize frictional heat near the heating that rubs of the material taper defect repair preset holes, thereby realization is to the preheating of taper defect repair preset holes; Six, repair welding: after warm finishes; Along with being pressed into gradually of soldering set, the conical section of mixing needle (3-1) from through hole (2-3), stretch out fully and outside be exposed at down outside the lower surface of annulus (2-2), mixing needle (3-1) closely contacts with the taper defect repair preset holes inner-wall material of treating repair welding; And agitating friction; The plastic deformation phenomenon appears in the interface zone metal, under the effect of the lower surface of the flexible shaft shoulder (2) and the heat production of surface of the work agitating friction and mixing needle (3-1) and the heat production of taper defect repair preset holes sidewall agitating friction, and under the effect of torsional shear power; The conical section complete filling of the mixing needle after the plastic deformation (3-1) is in taper defect repair preset holes; Make soldering set move 1mm～5mm along welding direction at last, realize the repair welding to stir friction welding seam defective and keyhole, soldering set is mentioned; Spring (4) is in relaxed state, stirs needle handle and leaves in the clamping hole (1-2-2) of soldering set cramping body (1).
2. soldering set of realizing the said scalable shaft shoulder friction of claim 1 preheating friction stir plug repair method; Said soldering set comprises stirring body (3); Said stirring body (3) is made up of mixing needle (3-1) and stirring needle handle (3-2); Stir needle handle (3-2) and mixing needle (3-1) and process one from top to bottom, the outer surface that stirs needle handle (3-2) is provided with mixing needle clamping face (3-2-1), and mixing needle (3-1) is a cone; It is characterized in that: said soldering set also comprises soldering set cramping body (1), the flexible shaft shoulder (2), spring (4), four limiting plates (5) and at least four keys (6); Said soldering set cramping body (1) is made up of coaxial last cylinder (1-1) and following cylinder (1-2), and the diameter of last cylinder (1-1) is less than the diameter of following cylinder (1-2), and last cylinder (1-1) is processed one with following cylinder (1-2); The outer surface of last cylinder (1-1) is provided with soldering set clamping face (1-1-1); The place, axle center of following cylinder (1-2) is provided with shoulder hole, and shoulder hole is respectively annulus hole (1-2-1) and clamping hole (1-2-2) from the bottom to top, and the sidewall of clamping hole (1-2-2) is provided with the tapped through hole (1-2-3) perpendicular to following cylinder (1-2) axis; Be laid with at least four inside grooves (1-2-1-1) on the inwall in last annulus hole (1-2-1); The flexible shaft shoulder (2) is made up of coaxial last annulus (2-1) and following annulus (2-2), and the external diameter of last annulus (2-1) is less than the external diameter of following annulus (2-2), and last annulus (2-1) is processed one with following annulus (2-2); The outer surface of last annulus (2-1) is laid with and four inside grooves (1-2-1-1) water jacket (2-1-1) one to one at least; Last annulus (2-1) on the flexible shaft shoulder (2) is arranged in the annulus hole (1-2-1), and each is equipped with a key (6) in water jacket (2-1-1) and the inside groove (1-2-1-1) one to one, and the external diameter of following annulus (2-2) equates with the external diameter of following cylinder (1-2); The place, axle center of the flexible shaft shoulder (2) be provided with clamping hole (1-2-2) to and the through hole (2-3) that equates of aperture; Spring (4) is positioned between the upper surface of lower surface and following annulus (2-2) of following cylinder (1-2), and spring (4) is sleeved on the annulus (2-1), and the external diameter of following annulus (2-2) equates with the external diameter of following cylinder (1-2); Each limiting plate (5) is provided with slotted hole (5-1); Four limiting plates (5) are uniformly distributed with the outer surface that is arranged on down annulus (2-2) and following cylinder (1-2), and the upper end of each limiting plate (5) is connected limiting plate (5) through screw with following cylinder (1-2), and the lower end of each limiting plate (5) is connected limiting plate (5) through screw with following annulus (2-2); And the screw on each limiting plate (5) all passes slotted hole (5-1); Stirring needle handle (3-2) on the stirring body (3) is arranged in through hole (2-3) and the clamping hole (1-2-2), and mixing needle clamping face (3-2-1) is right with tapped through hole (1-2-3), and 2/3rds conical sections of mixing needle (3-1) expose to down outside the lower surface of annulus (2-2).
3. according to the soldering set of the said scalable shaft shoulder friction preheating friction stir plug of claim 2 repair welding, it is characterized in that: the said lower surface of annulus (2-2) down is provided with the spill shaft shoulder face (2-2-1) that outward flange is higher than the center.
4. according to the soldering set of claim 2 or 3 said scalable shaft shoulders friction preheating friction stir plug repair weldings; It is characterized in that: place, the axle center of soldering set cramping body (1) upper surface be provided with following cylinder (1-2) on the material returned hole (1-3) that communicates of clamping hole (1-2-2), and the bore dia of material returned hole (1-3) is less than the bore dia of clamping hole (1-2-2).
5. according to the soldering set of the said scalable shaft shoulder friction preheating friction stir plug of claim 4 repair welding, it is characterized in that: the material of the said soldering set cramping body (1) and the flexible shaft shoulder (2) is high-speed steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105319477A CN101982284B (en) | 2010-11-04 | 2010-11-04 | Repair welding method and welding tool of stirring friction plug for friction preheating of telescopic shaft shoulder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105319477A CN101982284B (en) | 2010-11-04 | 2010-11-04 | Repair welding method and welding tool of stirring friction plug for friction preheating of telescopic shaft shoulder |
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| CN101982284A CN101982284A (en) | 2011-03-02 |
| CN101982284B true CN101982284B (en) | 2012-06-27 |
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