CN210633113U - Laser welding device capable of guaranteeing brightness and smoothness of titanium alloy welding surface - Google Patents
Laser welding device capable of guaranteeing brightness and smoothness of titanium alloy welding surface Download PDFInfo
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- CN210633113U CN210633113U CN201921389028.3U CN201921389028U CN210633113U CN 210633113 U CN210633113 U CN 210633113U CN 201921389028 U CN201921389028 U CN 201921389028U CN 210633113 U CN210633113 U CN 210633113U
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Abstract
The utility model discloses a can ensure bright smooth laser welding device of titanium alloy welded surface, it includes the mounting panel, sets up laser welder head on the mounting panel, setting are in just aim at the protective gas that blows in welding seam and the peripheral space range and hold in the palm the cover on the mounting panel, protective gas hold in the palm the cover include the dustcoat casing, set up in dustcoat casing bottom and with the dustcoat casing is in around forming a cavity structures's double-deck gas screen, level setting intake pipe in the cavity, the one end of intake pipe with the dustcoat casing is connected and is formed an air inlet, a plurality of apertures have been seted up to the upper surface of intake pipe. The utility model discloses accomplish welding position's preorder clearance and subsequent clearing simultaneously along with the removal of soldered connection around the welding, guarantee welding quality to realize that the welded joint surface is bright level and smooth.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of laser welding, especially, relate to a can ensure bright level and smooth laser welding device of titanium alloy welded surface.
[ background of the invention ]
Titanium alloys have advantages such as lower density, high specific strength, good mechanical properties and corrosion resistance, non-magnetic and non-toxic. The method is widely applied to the fields of aerospace, navigation, petrochemical industry, automobiles, medical treatment, military weaponry and the like. For thick plate titanium alloy welding, the traditional welding mode has the problems of shallow welding fusion depth, low welding speed, large welding thermal deformation, high production cost and the like. Vacuum electron beam welding and laser welding are increasingly used for welding titanium and its titanium alloys. However, electron beam welding equipment is complex and expensive, the assembly requirement is strict, the size and the shape of a workpiece to be welded are generally limited, and the like, so that the popularization and the application of the electron beam welding equipment are influenced to a certain extent. The titanium alloy laser welding technology of the thick plate is broken through, and the problem of high welding difficulty of the thick plate is solved.
The titanium alloy weldability has the following characteristics:
1. the joint is extremely easy to overheat, the crystal grains are easy to coarsen and have high tendency of cold cracking and large porosity;
2. the titanium alloy reacts with H at 250 ℃, O at 400 ℃ and N at 600 ℃, so that pores are easily formed in the welding process, and the plasticity and impact toughness of the brittle compound formed by the reaction are reduced;
3. the welding deformation is large, the elastic modulus is low, and the welding residual deformation is large.
Therefore, it is necessary to provide a new laser welding device capable of ensuring the brightness and smoothness of the welding surface of the titanium alloy to solve the above problems.
[ Utility model ] content
The utility model discloses a main aim at provides a can ensure bright level and smooth laser welding device of titanium alloy welded surface, can effectual protection welding system, provide good welding environment, guarantee welding quality realizes that titanium alloy welded joint surface is bright level and smooth.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a can ensure bright smooth laser welding device of titanium alloy welded surface, it includes the mounting panel, sets up laser welder head on the mounting panel, set up and be in on the mounting panel and aim at the welding seam and the peripheral space within range protection gas that blows and hold in the palm the cover, protection gas hold in the palm the cover include the dustcoat casing, set up in dustcoat casing bottom and with the dustcoat casing is around forming a cavity structures's double-deck gas screen, level setting and is in intake pipe in the cavity, the one end of intake pipe with the dustcoat casing is connected and is formed an air inlet, a plurality of apertures have been seted up to the upper surface of intake pipe.
Further, the air inlet is communicated with an argon gas source, gas blown in through the air inlet pipe is blown in through the small holes in the cavity, the whole cavity is fully filled by blowing in from the upper part of the cavity, and then the double-layer air filter net is blown to the surface of a welding seam through blowing.
Furthermore, the argon with the purity of more than or equal to 99.99 percent is blown out of the protective gas supporting cover, and the flow rate is controlled to be 10-25L/min.
Further, the diameter of the small hole is 1-6 mm.
Further, the laser welding device also comprises an air knife device which is arranged on the laser welding head and blows air perpendicular to the laser beam.
Further, the air blown out by the air knife device is dry air, and the air pressure is 0.2-0.7 MPa.
Further, the device comprises a filler wire side blowing device which is arranged on the mounting plate and located beside the laser welding head.
Furthermore, argon with the purity of more than or equal to 99.9 percent is blown out by the wire filling side blowing device, and the flow rate is controlled to be 5-10L/min.
Furthermore, a coaxial blowing device for blowing air along the direction of the laser beam is arranged at the bottom of the laser welding head.
Furthermore, the coaxial blowing device blows dry air, and the air pressure is 0.05-0.2 Mpa.
Compared with the prior art, the utility model relates to a can ensure bright level and smooth laser welding device of titanium alloy welded surface's beneficial effect lies in: the protective gas support cover which aims at the welding seam and blows in the peripheral space range is arranged, and the U-shaped copper pipe structure which blows upwards is arranged in the protective gas support cover mechanism, so that the protective gas is sufficient, saturated and stable, the air in the support cover is exhausted, the protective effect is improved, the welding protective range is enlarged by the support cover structure, the titanium alloy is prevented from reacting with hydrogen and oxygen at the temperature higher than 250 ℃, a welding pool is better protected, and a better welding joint is obtained; the coaxial protective gas blowing device, the air knife device which is arranged in the direction vertical to the laser beam, the protective gas which annularly surrounds the welding wire and is blown in along the welding wire conveying direction, and the protective gas support cover which is arranged on the right side of the laser welding head are arranged on the laser emission path, so that the welding environment of the surface of a welding workpiece is guaranteed in an all-around manner, and the strong guarantee is provided for improving the stability of the welding quality.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an exploded view of the protective gas hood according to the embodiment of the present invention;
the figures in the drawings represent:
100 can ensure the brightness and the smoothness of the welding surface of the titanium alloy;
1, mounting a plate; 2, laser welding head; 3 protective gas support cover, 31 outer cover shell, 32 double-layer gas filtering net, 33 gas inlet pipe, 34 gas inlet and 35 small holes; 4 an air knife device; 5, a wire filling side-blowing device; 6, a welding seam tracking device; 7 coaxial blowing device.
[ detailed description ] embodiments
Example (b):
referring to fig. 1-2, the present embodiment is a laser welding apparatus 100 capable of ensuring a smooth and bright titanium alloy welding surface, which includes a mounting plate 1, a laser welding head 2 disposed on the mounting plate 1, and a shielding gas holder 3 disposed on the mounting plate 1 and blowing gas within a range of a welding line and a peripheral space, wherein the shielding gas holder 3 includes a housing 31, a double-layer gas filter 32 disposed at the bottom of the housing 31 and surrounding the housing 31 to form a cavity structure, and an air inlet pipe 33 horizontally disposed in the cavity, one end of the air inlet pipe 33 is connected to the housing 32 to form an air inlet 34, and a plurality of small holes 35 are disposed on an upper surface of the air inlet pipe 33.
The protective gas hood 3 blows out argon with the purity of more than or equal to 99.99 percent, and the flow rate is controlled to be 10-25L/min. The diameter of the small hole 35 is 1-6 mm.
The present embodiment further comprises an air knife device 4 arranged on the laser welding head 1 to blow air perpendicular to the laser beam. The air blown out by the air knife device 4 is dry air, and the air pressure is 0.2-0.7 MPa. The air knife device 4 is a standard fitting in laser welding heads and is commercially available with laser welding heads.
The embodiment also comprises a filler wire side-blowing device 5 which is arranged on the mounting plate 1 and is positioned beside the laser welding head 2. Argon with the purity of more than or equal to 99.9 percent is blown out by the wire filling side-blowing device 5, and the flow rate is controlled to be 5-10L/min. The filler wire side blowing device 5 can adopt a filler wire blowing protection structure in the prior art to realize wire feeding and blowing of protective gas annularly surrounding the welding wire, and the structure can refer to the structure in the patent CN201820798737.6 of the company, so the structure is not described in detail in the embodiment.
The embodiment also comprises a weld tracking device 6 which is arranged on the mounting plate 1 and is positioned beside the filler wire side blowing device 5. The seam tracking device 6 is a standard part that is directly available on the market, and therefore the construction principle will not be described in detail in this embodiment.
The bottom of the laser welding head 2 is also provided with a coaxial blowing device 7 for blowing along the direction of the laser beam. The coaxial blowing device 7 blows dry air with the air pressure of 0.05-0.2 Mpa.
In the laser welding device 100 capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy, the protective gas support cover which is aligned with the welding line and blows air in the peripheral space range is arranged, and the U-shaped copper pipe structure which blows air upwards is arranged in the protective gas support cover mechanism, so that on one hand, the protective gas is sufficient, saturated and stable, on the other hand, the air in the support cover is discharged, the protective effect is improved, the welding protective range is enlarged by the support cover structure, the titanium alloy is prevented from reacting with hydrogen and oxygen at the temperature higher than 250 ℃, a welding pool is protected better, and a better welding joint is obtained; the coaxial protective gas blowing device, the air knife device which is arranged in the direction vertical to the laser beam, the protective gas which annularly surrounds the welding wire and is blown in along the welding wire conveying direction, and the protective gas support cover which is arranged on the right side of the laser welding head are arranged on the laser emission path, so that the welding environment of the surface of a welding workpiece is guaranteed in an all-around manner, and the strong guarantee is provided for improving the stability of the welding quality.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (10)
1. The utility model provides a can ensure bright level and smooth laser welding device in titanium alloy welded surface which characterized in that: it includes the mounting panel, sets up laser welder head, setting on the mounting panel are in just aim at the protection gas that welding seam and peripheral space within range blown on the mounting panel and hold in the palm the cover, the protection gas holds in the palm the cover and includes the dustcoat casing, set up in dustcoat casing bottom and with the dustcoat casing is around forming a cavity structures's double-deck air filter net, level setting and is in intake pipe in the cavity, the one end of intake pipe with the dustcoat casing is connected and is formed an air inlet, a plurality of apertures have been seted up to the upper surface of intake pipe.
2. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 1, characterized in that: the air inlet is communicated with an argon gas source, gas blown in through the air inlet pipe is blown into the cavity through the small holes, the whole cavity is fully filled by blowing in from the upper part of the cavity, and then the double-layer air filtering net penetrates through the small holes and is blown to the surface of a welding seam.
3. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 2, characterized in that: the protective gas support hood blows argon with the purity of more than or equal to 99.99 percent, and the flow rate is controlled to be 10-25L/min.
4. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 1, characterized in that: the diameter of the small hole is 1-6 mm.
5. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 1, characterized in that: the laser welding device also comprises an air knife device which is arranged on the laser welding head and blows air perpendicular to the laser beam.
6. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy as claimed in claim 5, wherein: the air blown out by the air knife device is dry air, and the air pressure is 0.2-0.7 Mpa.
7. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 1, characterized in that: the device is characterized by further comprising a filler wire side-blowing device which is arranged on the mounting plate and positioned beside the laser welding head.
8. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 7, is characterized in that: the argon with the purity of more than or equal to 99.9 percent is blown out by the wire filling side-blowing device, and the flow rate is controlled to be 5-10L/min.
9. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 1, characterized in that: and the bottom of the laser welding head is also provided with a coaxial blowing device for blowing along the direction of the laser beam.
10. The laser welding device capable of guaranteeing the brightness and the flatness of the welding surface of the titanium alloy according to claim 9, characterized in that: the coaxial blowing device blows dry air, and the air pressure is 0.05-0.2 Mpa.
Priority Applications (1)
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CN201921389028.3U CN210633113U (en) | 2019-08-26 | 2019-08-26 | Laser welding device capable of guaranteeing brightness and smoothness of titanium alloy welding surface |
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CN201921389028.3U CN210633113U (en) | 2019-08-26 | 2019-08-26 | Laser welding device capable of guaranteeing brightness and smoothness of titanium alloy welding surface |
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CN210633113U true CN210633113U (en) | 2020-05-29 |
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CN201921389028.3U Active CN210633113U (en) | 2019-08-26 | 2019-08-26 | Laser welding device capable of guaranteeing brightness and smoothness of titanium alloy welding surface |
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2019
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