CN104588879A - Pulse laser welding technology for precise coupling part - Google Patents
Pulse laser welding technology for precise coupling part Download PDFInfo
- Publication number
- CN104588879A CN104588879A CN201410771400.2A CN201410771400A CN104588879A CN 104588879 A CN104588879 A CN 104588879A CN 201410771400 A CN201410771400 A CN 201410771400A CN 104588879 A CN104588879 A CN 104588879A
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- China
- Prior art keywords
- welding
- coupling part
- pulse laser
- laser welding
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- 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.)
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a technology for carrying out pulse laser welding repair on an erosion area and a sealing area of a coupling part connected with a petroleum pipeline. The technology is characterized in that the erosion area of the coupling part is located at a deep cavity position, and a work-piece is provided with a threaded screw thread and is thin in wall. Temperature of traditional argon arc welding is higher than 200 DEG C, namely the work-piece deforms when the temperature is higher than 120 DEG C, and the deep cavity position can not be welded; pulse laser welding is a kind of non-contact welding and can solve the problem well, the temperature can be controlled to be about 80 DEG C, and the work-piece will not deform. In the welding process, only the erosion area is welded, large-area welding is avoided, time and materials are saved, follow-up machining is faster, and the dimensional precision is higher.
Description
Technical field
The present invention relates to the application of pulsed laser welding, particularly relate to a kind of pulsed laser welding of accurate coupling part.
Background technology
Accurate coupling part is applicable to various petroleum pipeline and connects, and because workpiece is little, complex contour, particularly relates to and closely cooperate and sealing, require that dimensional accuracy is high, and appearance requirement is attractive in appearance.Traditional handicraft adopts argon arc welding, is very easily out of shape, undercut, burns, occur shrinkage cavity, and the greyish black oxidation of weld seam is serious, and face of weld such as to wound at the phenomenon, and postwelding even causes workpiece to be scrapped.
Summary of the invention
The pulsed laser welding that the present invention uses is the laser beam that focuses on carries out melting welding untouchable welding method as the energy that energy bombardment weldment produces, its characteristic:
1. energy density is high, and heat input is few, and workpiece thermal deformation is little;
2. heat affected area, fusion zone is narrow, and fusion penetration is very large;
3. argon shield during welding, pore-free and rosin joint phenomenon;
4. be that noncontact is welded at a distance, can weld the position that some difficulty are higher, the inaccessible position of argon arc welding, some positions, narrow dark chamber, small but excellent thin geometric areas, the profile size of welding work pieces is unrestricted;
5. postwelding nature cooling velocity is high, can reach 106 DEG C/S, thus welding fusion zone is organized very trickle, makes joint performance good;
Pulsed laser welding solves all kinds of defects of traditional argon arc welding very well, thus the possibility that solution workpiece is scrapped, save production cost.
detailed description of the invention:
Now further illustrate for the erosion district paired pulses laser welding technology welding a kind of petroleum pipeline coupling part.Its requirement carries out REPAIR WELDING to erosion district, and the technical indicator of the pulsed laser welder of first our employing is as follows:
1.type of laser: ND:YAG;
2.optical maser wavelength: 1.06 μm;
3.pulse width: 0.3-20ms;
4. pulse frequency: 1-20Hz;
5. peak power output: 300W;
6.spot diameter: 200-1200 μm;
After optimum configurations is complete, we adopt diameter to be that 625 welding wires of 0.5mm add silk reparation as shown in Figure 1 to erosion district, are soldered workpiece indeformable, weld zone non-oxidation, appearance looks elegant, in machined perfection as before as shown in Figure 2.PT detects a flaw pore-free crackle as shown in Figure 3.
accompanying drawing illustrates:
Bottom Fig. 1 coupling part seal groove and edge pulse laser repairing
Outward appearance after machined after the reparation of Fig. 2 pulse laser
Flawless pore-free after Fig. 3 PT detects a flaw.
Claims (6)
1. type of laser: ND:YAG.
2. optical maser wavelength: 1.06 μm.
3. pulse width: 0.3-20ms.
4. pulse frequency: 1-20Hz.
5. peak power output: 300W.
6. spot diameter: 200-1200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410771400.2A CN104588879A (en) | 2014-12-16 | 2014-12-16 | Pulse laser welding technology for precise coupling part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410771400.2A CN104588879A (en) | 2014-12-16 | 2014-12-16 | Pulse laser welding technology for precise coupling part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104588879A true CN104588879A (en) | 2015-05-06 |
Family
ID=53115118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410771400.2A Pending CN104588879A (en) | 2014-12-16 | 2014-12-16 | Pulse laser welding technology for precise coupling part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104588879A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070267009A1 (en) * | 2004-08-23 | 2007-11-22 | Wei Wang | Medicinal Aerosol Formulation Receptacle and Production Thereof |
| US20090001058A1 (en) * | 2007-06-27 | 2009-01-01 | James Lentz | Method and apparatus for depositing raised features at select locations on a substrate to produce a slip-resistant surface |
| CN102000915A (en) * | 2009-08-31 | 2011-04-06 | 通用电气公司 | Combustion cap effusion plate laser weld repair |
| CN102019505A (en) * | 2009-09-17 | 2011-04-20 | 沈阳大陆激光技术有限公司 | Method for laser cladding by using laser cladding welding wire |
| CN102773608A (en) * | 2012-06-29 | 2012-11-14 | 中山市博汇广告工艺制品有限公司 | Laser welding word machine and welding word process |
-
2014
- 2014-12-16 CN CN201410771400.2A patent/CN104588879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070267009A1 (en) * | 2004-08-23 | 2007-11-22 | Wei Wang | Medicinal Aerosol Formulation Receptacle and Production Thereof |
| US20090001058A1 (en) * | 2007-06-27 | 2009-01-01 | James Lentz | Method and apparatus for depositing raised features at select locations on a substrate to produce a slip-resistant surface |
| CN102000915A (en) * | 2009-08-31 | 2011-04-06 | 通用电气公司 | Combustion cap effusion plate laser weld repair |
| CN102019505A (en) * | 2009-09-17 | 2011-04-20 | 沈阳大陆激光技术有限公司 | Method for laser cladding by using laser cladding welding wire |
| CN102773608A (en) * | 2012-06-29 | 2012-11-14 | 中山市博汇广告工艺制品有限公司 | Laser welding word machine and welding word process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |
|
| WD01 | Invention patent application deemed withdrawn after publication |