CN110434450A - A kind of Friction stir welding method of step type weld seam - Google Patents
A kind of Friction stir welding method of step type weld seam Download PDFInfo
- Publication number
- CN110434450A CN110434450A CN201910456970.5A CN201910456970A CN110434450A CN 110434450 A CN110434450 A CN 110434450A CN 201910456970 A CN201910456970 A CN 201910456970A CN 110434450 A CN110434450 A CN 110434450A
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- weld seam
- thickness
- welding procedure
- welding
- stepped
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Classifications
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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
Abstract
The invention belongs to the engineer applications that agitating friction is welded in Field of Aviation Manufacturing, a kind of Friction stir welding method of stepped weld seam is provided, overcome the shortcomings of the prior art, removing every section of weld seam uropore and different-thickness weld seam junction in ladder weld seam there are problems that not welding place.Include the following steps: (1) that the weld seam that is successively become smaller by thickness of stepped weld seam is mutually constituted in succession, retains welding procedure surplus at every kind of thickness weld seam both ends before weldering；Step 2 has taken welding procedure surplus as solder joint or receipts solder joint, is successively welded to thin to various thickness weld seams by thickness, whenever the weld seam for having welded a kind of thickness, the welding procedure surplus of thickness weld seam both ends reservation is fallen with milling tool.The present invention is conducive to the extensive use that agitating friction is welded in Field of Aviation Manufacturing.
Description
Technical field
The invention belongs to the engineer applications that agitating friction is welded in Field of Aviation Manufacturing, are related to a kind of stirring for stepped weld seam
Mix friction-welding technique improved method.
Background technique
Successively become smaller by the thickness phase of weld seam of stepped weld seam is constituted in succession, as shown in Figure 1.Using Friction Stir Welding
When, due to mixing needle length be it is fixed, a kind of stirring-head of specification can only weld a kind of weld seam of thickness, different-thickness weld seam
Friction welding need to be stirred to different-thickness weld seam respectively using plurality of specifications stirring-head.There are following for the welding technique
Insufficient: 1. in the tail portion that every kind of thickness weld seam terminates, there are uropores, influence the intensity and beauty of weld seam；2. since between centers diameter is big
In mixing needle diameter, exists in adjacent different-thickness weld seam junction and do not weld place.The above insufficient agitating friction that influences is welded in boat
The extensive use of empty manufacturing field.
Summary of the invention
Goal of the invention: providing a kind of Friction stir welding method of stepped weld seam, overcome it is of the existing technology not
Foot, removing every section of weld seam uropore and different-thickness weld seam junction in ladder weld seam there are problems that not welding place.
A kind of technical solution: Friction stir welding method of step type weld seam, comprising:
The weld seam that step 1, stepped weld seam are successively become smaller by thickness is mutually constituted in succession, at every kind of thickness weld seam both ends before weldering
Retain welding procedure surplus；
Step 2 has taken welding procedure surplus as solder joint or receipts solder joint, is successively welded to thin to various thickness weld seams by thickness
It connects, whenever the weld seam for having welded a kind of thickness, the welding procedure surplus of thickness weld seam both ends reservation is fallen with milling tool.
Whenever a kind of weld seam of thickness welded and with milling tool fall the thickness weld seam both ends reservation welding procedure more than
After amount, next thickness weld seam treatment process specifically: select suitable stirring-head, the uropore that the above thickness weld seam receives solder joint is
It plays solder joint, carry out next thickness weld seam welding, postwelding milling cutter by terminal of the welding procedure surplus of next thickness weld seam
Mill away the welding procedure surplus that next thickness weld seam both ends retain.
Welding procedure surplus includes two kinds: a kind of welding procedure surplus is stepped weld seam prolonging at whole weld seam both ends
It stretches；Another welding procedure surplus is extension of the thick weld seam on thin weld seam in the middle part of weld seam.
Base material is kept identical as the thickness of weld seam at welding procedure surplus.
To stepped weld seam the welding procedure surplus of the extension at whole weld seam both ends milling standard are as follows: whole removal weldering
Connect process allowance.
To the milling standard of the welding procedure surplus of extension of the weld seam thick in the middle part of weld seam on thin weld seam are as follows: upper thickness weldering
The welding procedure surplus milling of seam is arrived equal with the thickness of next thickness weld seam.
Suitable stirring-head refers to: the mixing needle diameter of stirring-head should be greater than the diameter equal to uropore, and mixing needle length is omited
Less than plate thickness.
The range that mixing needle length is slightly less than plate thickness is 0.1-0.5 millimeters.
Step 2 includes:
Clamping, preweld cleaning weld seam, AB sections of weld seam welding, excision welding procedure surplus, BC sections of weld seam welding, excision welding
Process allowance.
Clamping includes:
By part, in top to bottom, left and right, front and rear direction, compacting is held out against, and keeps commissure to have space after the completion of general assembly, space is wide
Degree is greater than welder head working position width.
The utility model has the advantages that access for welding is preferable, fills convenient for tooling to part after the present invention increases welding procedure surplus
Folder.Stepped weld seam is welded according to welding sequence, the achievable whole weld seam welding of clamped one time are suitable for difficult clamping and carrying
Heavy parts.The present invention is simple and practical, easy to operate, does not increase the economic cost of part processing, it can be achieved that agitating friction welds skill
Art meets part production to intensity, quality and aesthetic, is conducive to agitating friction and is welded in the engineer application of stepped weld seam
The extensive use of Field of Aviation Manufacturing.
Detailed description of the invention
Fig. 1 is that stepped weld seam docks schematic diagram；
Wherein: 1. right stepped parts, the left stepped part of 1a, 2 the 1st articles of weld seams, 3 the 2nd articles of weld seams, 4 the 3rd articles of weld seams,
5 nth weld seams.
Fig. 2 is stepped weld joint welding process surplus schematic diagram.
Wherein: 6. the 1st articles of weld seam front-end process surpluses, 7. the 1st articles of weld seam backend process surpluses, 7. the 2nd articles of weld seam techniques
Surplus, 8. the 3rd articles of weld seam process allowances, 9. nth weld seam process allowances
Fig. 3 step type weld seam butt-joint process surplus schematic diagram.
Fig. 4 step type weld seam plays weldering and receives bond pad locations schematic diagram.
The 1st article of weld seam postwelding process allowance of Fig. 5 cuts off schematic diagram.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawing, please refers to Fig. 2 to Fig. 5
Step 1: retaining welding procedure surplus
When part is machined, retain welding procedure surplus at every kind of thickness weld seam both ends.It is provided by the invention
Welding procedure surplus increases method as shown in Fig. 2, welding procedure surplus 6 and 10 is extension of the stepped weld seam at weld seam both ends,
Extension of the thick weld seam of welding procedure surplus 7,8 and 9 on thin weld seam.Stepped weld seam docking effect is as schemed after increasing process allowance
Shown in 3.Base material is kept identical as the thickness of weld seam at welding procedure surplus, and planform and size can be according to parts and stirring
Head size concrete condition determines.When welding, base material plays solder joint or receipts solder joint as what agitating friction welded at welding procedure surplus.
Welding procedure surplus provided herein increases mode, its main feature is that the simple easy processing forming of structure type, postwelding are convenient for utilizing milling
Knife removal.
Step 2: welding procedure
Weld seam plays weldering and receives solder joint as shown in figure 3, wherein A point, B point, D point, N point are all located at welding procedure surplus area,
The specific welding sequence of step type weld seam of the invention is as follows:
A. clamping.Parts fixation schematic diagram is as shown in Figure 4.It is required that part is compacted push up in top to bottom, left and right, front and rear direction
Tightly, guarantee that part will not move in the welding process, keep commissure to have open space, prevent from welding after the completion of general assembly
Welder head and tooling collide in the process.
B. preweld cleaning weld seam.Commissure is cleaned by the way of mechanical grinding and chemical cleaning, removes weld seam
The oxidation film and greasy dirt at place.
C.AB sections of weld seam welding.At AB sections of welding, A point and B point play weldering and receive solder joint and answer respectively as playing weldering and receiving solder joint
It is fully located on process allowance, convenient for the welding of postwelding removal welding procedure surplus and Article 2 weld seam.
D. welding procedure surplus is cut off.Milling cutter is assembled on friction stir welding machine main shaft, editing procedure is to welding procedure
Surplus 6,7 is removed.1st article of weld seam postwelding process allowance excision effect is as shown in Figure 5.
E.BC sections of weld seam welding.At BC sections of welding, B point and C point play weldering and receive solder joint and answer respectively as playing weldering and receiving solder joint
It is fully located on process allowance.Suitable stirring-head is selected according to plate thickness and the size of uropore, mixing needle diameter should be greater than
Equal to the diameter of uropore, mixing needle length is slightly less than plate thickness.
F. welding procedure surplus is cut off.Milling cutter is assembled on friction stir welding machine main shaft, editing procedure is to welding procedure
Surplus 8 is removed.
G. process e is repeated, the process of process f is sequentially completed the welding of remaining weld seam.
Claims (10)
1. a kind of Friction stir welding method of step type weld seam characterized by comprising
The weld seam that step 1, stepped weld seam are successively become smaller by thickness is mutually constituted in succession, is retained before weldering at every kind of thickness weld seam both ends
Welding procedure surplus；
Step 2 has taken welding procedure surplus as solder joint or receipts solder joint, is successively welded to thin to various thickness weld seams by thickness,
Whenever the weld seam for having welded a kind of thickness, the welding procedure surplus of thickness weld seam both ends reservation is fallen with milling tool.
2. a kind of Friction stir welding method of stepped weld seam as described in claim 1, which is characterized in that
After a kind of weld seam of thickness has welded and falls the welding procedure surplus of thickness weld seam both ends reservation with milling tool,
Next thickness weld seam treatment process specifically: select suitable stirring-head, the uropore that the above thickness weld seam receives solder joint has been weldering
Point carries out next thickness weld seam welding, postwelding milling tool by terminal of the welding procedure surplus of next thickness weld seam
Fall the welding procedure surplus that next thickness weld seam both ends retain.
3. a kind of Friction stir welding method of stepped weld seam as claimed in claim 2, which is characterized in that
Welding procedure surplus includes two kinds: a kind of welding procedure surplus is extension of the stepped weld seam at whole weld seam both ends；Separately
A kind of welding procedure surplus is extension of the thick weld seam on thin weld seam in the middle part of weld seam.
4. a kind of Friction stir welding method of stepped weld seam as claimed in claim 3, which is characterized in that
Base material is kept identical as the thickness of weld seam at welding procedure surplus.
5. a kind of Friction stir welding method of stepped weld seam as claimed in claim 3, which is characterized in that step type
Milling standard of the weld seam in the welding procedure surplus of the extension at whole weld seam both ends are as follows: whole removal welding procedure surplus.
6. a kind of Friction stir welding method of stepped weld seam as claimed in claim 3, which is characterized in that in weld seam
The milling standard of the welding procedure surplus of extension of portion's thickness weld seam on thin weld seam are as follows: the welding procedure surplus of upper thickness weld seam
It mills equal with the thickness of next thickness weld seam.
7. a kind of Friction stir welding method of stepped weld seam as described in claim 1, which is characterized in that
Suitable stirring-head refers to: the mixing needle diameter of stirring-head should be greater than the diameter equal to uropore, and mixing needle length is slightly less than
Plate thickness.
8. a kind of Friction stir welding method of stepped weld seam as claimed in claim 7, which is characterized in that mixing needle is long
The range that degree is slightly less than plate thickness is 0.1-0.5 millimeters.
9. a kind of Friction stir welding method of stepped weld seam as described in claim 1, which is characterized in that step 2 packet
It includes:
Clamping, preweld cleaning weld seam, AB sections of weld seam welding, excision welding procedure surplus, BC sections of weld seam welding, excision welding procedure
Surplus.
10. a kind of Friction stir welding method of stepped weld seam as claimed in claim 9, which is characterized in that clamping packet
It includes:
By part, in top to bottom, left and right, front and rear direction, compacting is held out against, and keeps commissure to have space after the completion of general assembly, space width is big
In welder head working position width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456970.5A CN110434450A (en) | 2019-05-29 | 2019-05-29 | A kind of Friction stir welding method of step type weld seam |
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| CN201910456970.5A CN110434450A (en) | 2019-05-29 | 2019-05-29 | A kind of Friction stir welding method of step type weld seam |
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| CN110434450A true CN110434450A (en) | 2019-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453513A (en) * | 2020-10-14 | 2021-03-09 | 沈阳透平机械股份有限公司 | Method for machining impeller blade of centrifugal compressor and impeller blade |
| CN113275734A (en) * | 2021-03-26 | 2021-08-20 | 陕西飞机工业有限责任公司 | Friction stir welding method for concave welding line |
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| DE19746308A1 (en) * | 1997-10-21 | 1999-04-22 | Burkhardt Prof Dr Dr Suthoff | Linear weld joint is produced by a friction lap welding process |
| JP5000982B2 (en) * | 2006-10-31 | 2012-08-15 | 日立建機株式会社 | Laser welding method for differential thickness materials |
| CN102873454A (en) * | 2012-09-18 | 2013-01-16 | 西北工业大学 | Welding method for multi-layer metal strip |
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| CN108526678A (en) * | 2017-03-06 | 2018-09-14 | 陕西飞机工业（集团）有限公司 | A kind of stirring friction-welding technique method of Z-type weld seam |
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2019
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| JPH03248787A (en) * | 1990-02-27 | 1991-11-06 | Amada Co Ltd | Method and device for automatically correcting welding line in laser beam welding |
| DE19746308A1 (en) * | 1997-10-21 | 1999-04-22 | Burkhardt Prof Dr Dr Suthoff | Linear weld joint is produced by a friction lap welding process |
| JP5000982B2 (en) * | 2006-10-31 | 2012-08-15 | 日立建機株式会社 | Laser welding method for differential thickness materials |
| CN102873454A (en) * | 2012-09-18 | 2013-01-16 | 西北工业大学 | Welding method for multi-layer metal strip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453513A (en) * | 2020-10-14 | 2021-03-09 | 沈阳透平机械股份有限公司 | Method for machining impeller blade of centrifugal compressor and impeller blade |
| CN113275734A (en) * | 2021-03-26 | 2021-08-20 | 陕西飞机工业有限责任公司 | Friction stir welding method for concave welding line |
| CN113275734B (en) * | 2021-03-26 | 2022-11-22 | 陕西飞机工业有限责任公司 | Friction stir welding method for concave welding line |
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Application publication date: 20191112 |