CN105562931B - A kind of spherical high-pressure gas cylinder wall metal inner lining method for laser welding - Google Patents
A kind of spherical high-pressure gas cylinder wall metal inner lining method for laser welding Download PDFInfo
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- CN105562931B CN105562931B CN201510996576.2A CN201510996576A CN105562931B CN 105562931 B CN105562931 B CN 105562931B CN 201510996576 A CN201510996576 A CN 201510996576A CN 105562931 B CN105562931 B CN 105562931B
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- liner body
- welding
- filter screen
- pressure inlet
- ring
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/242—Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- 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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
-
- 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
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of spherical high-pressure gas cylinder wall metal inner lining method for laser welding, belong to metal material melting welding technology field.The spherical high-pressure gas cylinder wall metal inner lining method for laser welding includes：Set first to lock base frame rank in pressure inlet and liner body apposition position, set circumferential weld to connect ring in liner body apposition position, net-filter assembly includes filter screen and filter screen reinforcing ring, and filter screen reinforcing ring is set in filter cloth edge both sides；Pressure inlet is welded at the endoporus of liner body by the first lock base frame rank；Filter screen is welded in liner body by filter screen reinforcing ring；Ring is connect by circumferential weld to weld liner body.The weld size precision of spherical high-pressure gas cylinder wall metal inner lining method for laser welding of the present invention is guaranteed, welding quality stable.
Description
Technical field
The present invention relates to metal material melting welding technology field, more particularly to a kind of spherical high-pressure gas cylinder wall metal inner lining
Method for laser welding.
Background technology
Fiber winds metal lining composite material gas cylinder, can loss of weight under identical pressure-bearing compared with simple metal gas cylinder
40%~60%, leakage hidden danger can be overcome compared with non-metallic inner liner.Metal lining composite material gas cylinder is lightweight, hold
Press height, heatproof height, fatigue life length, security good, it is gradually of interest by people, be expected to aerospace, space flight, aviation, build and
The fields such as traffic are widely used.Usual composites gas cylinder is manufactured using 3~4mm metal inner linings, appropriate to be thinned
Metal inner lining thickness can increase gas cylinder volume, reduce weight, improve gas cylinder specific strength, and metal inner lining is frequently with steel alloy, titanium
The material welding forming such as alloy, aluminium alloy, thin-wall metal liner is using conventional arc method welding, and deformation large-size precision is not
Easily ensure, many welding qualities of thin walled welds defect are difficult to ensure.
The content of the invention
The present invention provides a kind of spherical high-pressure gas cylinder wall metal inner lining method for laser welding, solves or part is solved now
There is thin-wall metal liner in technology using conventional arc method welding, to deform large-size precision and be difficult to ensure, thin walled welds lack
Fall into the technical problem that many welding qualities are difficult to ensure.
In order to solve the above technical problems, the invention provides a kind of laser welding side of spherical high-pressure gas cylinder wall metal inner lining
Method, the metal inner lining includes two halves liner body, pressure inlet and net-filter assembly；The pressure inlet and the liner body pairing
Place is provided with the first lock base frame rank, and the two halves liner body apposition position is provided with circumferential weld and connects ring, and the net-filter assembly includes filter
Net and filter screen reinforcing ring, the filter screen reinforcing ring are fixed on the inwall of the liner body, to wrap the edge for setting the filter screen；
The method for laser welding includes：The pressure inlet is welded in the liner body by the described first lock base frame rank
At hole；The filter screen is welded in the liner body by the filter screen reinforcing ring；Connecing ring by the circumferential weld will be described
Two halves liner body is welded.
Further, the first lock bottom step thicknesses are t/2, and width is 2t；The thickness that the circumferential weld connects ring is 3/2t,
Width is 10~15t；The thickness of the filter screen reinforcing ring is t, and width is 4~5t；T is the wall thickness of liner body.
Further, the assembling and welding of the pressure inlet and the liner body are carried out on pressure inlet weld clip；It is described
Pressure inlet carries out tack welding, and regulation laser welding pipette tips make pipette tips guide feux rouges center alignment pressure inlet girth joint center；It is described
Pressure inlet carries out continuous welding and receives arc crater processing with circumferential weld.
Further, the pressure inlet is enclosed on the pressure inlet locating shaft, the pressure inlet bottom surface and the adapter
Mouth weld clip locating surface is sturdy；The liner body is assembled, makes the inner hole sleeve of the liner body cylindrical in the pressure inlet flange,
And it is sturdy with the described first lock base frame rank and the pressure inlet weld clip locating surface；The liner body is cylindrical to be held round and centering, is turned
Mantle axle is travelled forward, and the conical surface radially promotes fagging, and the liner body is held round, looked for by fagging front end arc surface
Just；The fixed liner body, pressure ring is enclosed on liner body is cylindrical, makes the bore circular arc face of the pressure ring and the liner sheet
External wall is sturdy, and pressure ring described in centering is fixed the pressure ring with screw rod.
Further, after the overlapping 5~10mm length of the circumferential weld of the pressure inlet, carry out the slow drop of laser power and receive arc, laser
Welding gun head keeps former speed of welding to move on, and laser power decays to 0, die-away time T=by former bonding power along straight line
(2~3) W/V, wherein W are that weld width, V are speed of welding, and after laser stops light extraction, pipette tips can stop motion.
Further, the filter screen rigging position line is delineated in the liner inner body wall, the net-filter assembly is positioned over
The liner body interior, makes the net-filter assembly outer ledge be flushed with institute scribe line；The filter screen reinforcing ring is by the filter
Net is clipped in the middle, firm welding；The filter screen reinforcing ring be in contact with liner body position carry out angle welding tack welding；It is described
Filter screen reinforcing ring carries out sequential welding.
Further, the filter screen reinforcing ring outside diameter is more than the liner body internal diameter.
Further, the filter screen reinforcing ring be in contact with the liner body position carry out angle welding tack welding include：
Laser welding pipette tips guiding feux rouges center alignment angle Weld pipe mill deviation is not more than 0.3mm, and pipette tips angle is 45 °, welding parameter：
Laser power 0.5-0.7kW, weldering speed 1.5-1.8m/min, defocusing amount are that 0mm, side-blown protection atmospheric pressure 0.25MPa, anchor point are long
3-5mm, spacing 20-30mm.
Further, the two halves liner body for being welded with the pressure inlet and net-filter assembly is set in the circumferential weld
Connect on the second lock base frame rank on ring both sides, apply certain pressure in the two halves liner body bottom portion, make girth joint pairing；It is described
Circumferential weld connects ring and carries out circumferential weld tack welding, and regulation laser welding pipette tips guiding feux rouges is directed at the circumferential weld；The circumferential weld connects ring progress
Continuous welding receives arc crater processing with circumferential weld.
Further, the second lock bottom step thicknesses are t/2, and width is 2t, and t is the wall thickness of liner body.
The large scale spherical high-pressure gas cylinder thin-wall metal liner method for laser welding that the present invention is provided is in pressure inlet and liner
Body apposition position sets first to lock base frame rank, sets circumferential weld to connect ring in liner body apposition position, sets and filters in filter cloth edge both sides
Net reinforcing ring, pressure inlet is welded at the endoporus of liner body by the first lock base frame rank, and filter screen is welded by filter screen reinforcing ring
In liner body, ring is connect by circumferential weld and welds liner body, solved the large size, thin walled existing welding method of metal inner lining and deposit
Electric arc welding difficulty is big, dimensional accuracy can not ensure and the problem of welding quality unstable.
Brief description of the drawings
Fig. 1 is the structural representation of large scale spherical high-pressure gas cylinder thin-wall metal liner provided in an embodiment of the present invention；
Fig. 2 is the structural representation of liner body provided in an embodiment of the present invention；
Fig. 3 is that pressure inlet provided in an embodiment of the present invention welds schematic diagram with liner body；
Fig. 4 is Fig. 3 A portions partial enlarged drawing；
Fig. 5 is the front view of pressure inlet positioning welding provided in an embodiment of the present invention；
Fig. 6 is the top view of pressure inlet positioning welding in Fig. 5；
Fig. 7 is the welding schematic diagram of liner body provided in an embodiment of the present invention；
Fig. 8 screen modules provided in an embodiment of the present invention and the welding schematic diagram of liner body.
Embodiment
Referring to Fig. 1-2, a kind of method for laser welding of spherical high-pressure gas cylinder wall metal inner lining, the metal inner lining includes two
Half liner body 1, pressure inlet 2 and net-filter assembly 4；The pressure inlet 2 is provided with the first lock bottom with the apposition position of liner body 1
Step 2-1, the apposition position of two halves liner body 1 is provided with circumferential weld and connects ring 3, and the net-filter assembly 4 includes filter screen 4-1 and filter screen
Reinforcing ring 4-2, the filter screen reinforcing ring 4-2 is fixed on the inwall of the liner body 1, to wrap the side for setting the filter screen 4-1
Edge.
The method for laser welding includes：
Step 1, the pressure inlet 2 is welded on to the endoporus of the liner body 1 by the described first lock base frame rank 2-1
Place.
Step 2, the filter screen 4-1 is welded in the liner body 1 by the filter screen reinforcing ring 4-2.
Step 3, ring 3 is connect by the circumferential weld to weld the two halves liner body 1.
The structure of metal inner lining is discussed in detail.
First is set to lock base frame rank 2-1 in the pressure inlet 2 and the apposition position of liner body 1.The first lock base frame
Rank 2-1 thickness is t/2, and width is 2t, facilitates centering to be eliminated with misalignment, it is ensured that the opening endoporus 1-1 of the liner body 1 and institute
State the Excircle machining precision of pressure inlet 2, make the liner body 1 and the circumferential weld pairing clearance control of pressure inlet 2 0.1mm with
It is interior.Circumferential weld is set to connect ring 3 in the apposition position of liner body 1, the thickness that the circumferential weld connects ring 3 is 3/2t, width is 10~
15t.The net-filter assembly 4 includes filter screen 4-1 and filter screen reinforcing ring 4-2, and the filter screen is set in the filter screen 4-1 both sides of edges
Reinforcing ring 4-2.The thickness of the filter screen reinforcing ring 4-2 is t, and width is 4~5t.T is the wall thickness of the liner body 1.It is described
Liner body 1 is removed in periphery surplus, reprocessing using the shaping of sheet material deep drawn or thermoforming using wire cutting or laser cutting
Serve as a contrast body 1 endoporus 1-1, machining accuracy according toIt is controlled.
Referring to Fig. 3-6, step 1 is discussed in detail.
The pressure inlet 2 is shaped using machining, and the pressure inlet 2 is cylindrical to set the with the docking location of liner body 1
One lock base frame rank 2-1.The first lock base frame rank 2-1 requires to carry out back chipping processing, it is ensured that between after the pairing of liner body 1
Gap is less than 0.1mm.The assembling and welding of the pressure inlet 2 and the liner body 1 are carried out on pressure inlet weld clip 6.Will be described
Pressure inlet 2 is enclosed on the pressure inlet locating shaft 6-1, and the bottom surface of pressure inlet 2 is pasted with the pressure inlet weld clip locating surface 6-2
It is real.Assemble the liner body 1, making the endoporus 1-1 of the liner body, to be enclosed on the flange of pressure inlet 2 cylindrical, and with it is described
The first lock base frame rank 2-1 and pressure inlet weld clip locating surface 6-2 is sturdy.The liner body 1 is cylindrical to be held round and centering, is rotated
Axis of cone 6-5 travels forward, and conical surface 6-6 radially promotes fagging 6-7, and fagging front end arc surface 6-8 is by the liner sheet
Body 1 is held round, centering.The fixed liner body 1, pressure ring 6-9 is enclosed on liner body 1 is cylindrical, makes the endoporus of the pressure ring 6-9
Arc surface and the outer wall of liner body 1 are sturdy, and pressure ring 6-9 described in centering is fixed the pressure ring 6-9 with screw rod 6-10.
The pressure inlet 1 carries out tack welding, and regulation laser welding pipette tips make pipette tips guide feux rouges center to be directed at the adapter
The girth joint center of mouth 2.The feux rouges center alignment is not more than 0.3mm, welding ginseng with the girth joint centre deviation of pressure inlet 2
Number：Laser power 1.1-1.5kW, weldering speed 1.5-1.8m/min, defocusing amount are 0mm, side-blown protection atmospheric pressure 0.25MPa, positioning
The long 3-5mm of point, spacing 20-30mm.
The pressure inlet 2 is continuously welded.Regulation laser welding pipette tips make pipette tips guide feux rouges center alignment pressure inlet 2
Girth joint center, the feux rouges center alignment is not more than 0.3mm, welding parameter with the girth joint centre deviation of pressure inlet 2：When
When the material thickness of liner body 1 is 0.8-1.2mm, laser power is 0.9-1.3KW；When the inner lining material thickness is
1.2-1.8mm when, laser power is 1.3-1.8KW；When the inner lining material 1 is thickness 1.8-2.5mm, laser power is
1.8-2.4KW, weldering speed 1.0-1.2m/min, defocusing amount are+3mm, side-blown protection atmospheric pressure 0.25MPa, continuous laser, girth joint
5~10mm of remelting length.
The pressure inlet 2 carries out circumferential weld and receives arc crater processing.After the overlapping 5~10mm length of circumferential weld of the pressure inlet 2, carry out
Slow drop of laser power receives arc, and laser welding pipette tips keep former speed of welding to move on, and laser power is by former bonding power along directly
Line attenuation is to 0, and die-away time T=(2~3) W/V, wherein W is that weld width, V are speed of welding, after laser stops light extraction,
Pipette tips can stop motion.
Referring to Fig. 8, step 2 is discussed in detail.
The filter screen rigging position line is delineated in the inwall of liner body 1, the net-filter assembly 4 is positioned over the liner
Inside body 1, the outer ledge of net-filter assembly 4 is set to be flushed with institute scribe line.
The filter screen 4-1 is clipped in the middle by the filter screen reinforcing ring 4-2, then firm with diffusion welding (DW) or electric resistance welding.
The filter screen reinforcing ring 4-2 outside diameters are more than the internal diameter of liner body 1, i.e. 0.03~0.05mm magnitudes of interference.Filter screen is strengthened
Ring 4-2 is same material with liner body 1.
The filter screen reinforcing ring 4-2 be in contact with liner body 1 position carry out angle welding tack welding.It is required that laser welding
Pipette tips guiding feux rouges center alignment angle Weld pipe mill deviation is not more than 0.3mm, and pipette tips angle is 45 °, welding parameter：Laser power
0.5-0.7kW, weldering speed 1.5-1.8m/min, defocusing amount be 0mm, side-blown protection atmospheric pressure 0.25MPa, the long 3-5mm of anchor point,
Away from 20-30mm.
The filter screen reinforcing ring 4-2 carries out sequential welding.It is required that laser welding pipette tips guiding feux rouges center is directed at the fillet welding
Seam centre deviation is not more than 0.3mm, and pipette tips angle is 45 °, welding parameter：Laser power 0.9-1.1kW, weldering speed 1.5-1.8m/
Min, defocusing amount is+3mm, side-blown protection atmospheric pressure 0.25MPa, continuous laser, 5~10mm of girth joint remelting length.
Referring to Fig. 7, step 3 is discussed in detail.
The circumferential weld connects ring 3 can be using machining shaping after sheet material rolling volume, welding.The circumferential weld connects the both sides of ring 3 difference
It is machined with after lock base frame rank, with the grafting of liner body 1, keeps flush with outer surface, eliminate assembling misalignment, while ensures part
Machining accuracy, makes at two pairing clearance control within 0.1mm.Two pieces is welded with the pressure inlet 2 and net-filter assembly 4
Lining body 1 is set in the circumferential weld and connect on the second lock base frame rank 3-1 on the both sides of ring 3, applies in the bottom of liner body 1
Certain pressure, makes the girth joint pairing.The second lock base frame rank 3-1 thickness is t/2, and width is 2t, and t is liner body
Wall thickness.Second lock base frame rank 3-1 requires to carry out back chipping processing.
The circumferential weld connects ring 3 and carries out circumferential weld tack welding, and regulation laser welding pipette tips guiding feux rouges is directed at the circumferential weld.Laser
Welding gun head guides feux rouges center to be not more than 0.3mm, welding parameter with circumferential weld centre deviation：Laser power 1.3-1.5kW, weldering speed
1.4-1.6m/min, defocusing amount is 0mm, side-blown protection atmospheric pressure 0.25MPa, the long 3-5mm of anchor point, spacing 20-30mm.
The circumferential weld connects ring 3 and continuously welded.Adjust laser welding pipette tips guiding feux rouges and be directed at the circumferential weld, Laser Welding
Pipette tips guiding feux rouges center and circumferential weld centre deviation no more than 0.3mm are met, when the material thickness of liner body 1 is 0.8-
During 1.2mm, laser power is 0.9-1.3KW；When the inner lining material thickness is 1.2-1.8mm, laser power is 1.3-
1.8KW；When the inner lining material 1 is thickness 1.8-2.5mm, laser power is 1.8-2.4KW, weldering speed 1.0-1.2m/min,
Defocusing amount is+3mm, side-blown protection atmospheric pressure 0.25MPa, continuous laser, 5~10mm of girth joint remelting length.
The circumferential weld connects ring 3 and carries out circumferential weld receipts arc crater processing.The circumferential weld is connect after the overlapping 5~10mm length of circumferential weld of ring 3,
Arc is received using the slow drop of laser power, at this moment laser welding pipette tips keep former speed of welding to move on, and laser power is welded by original
Power decays to 0 along straight line, and die-away time T=(2~3) W/V, wherein W is that weld width, V are speed of welding.Treat that laser stops
After light extraction, pipette tips can stop motion.
Embodiments of the invention are introduced in order to clearer, are situated between below from the application method of the embodiment of the present invention
Continue.
First is set to lock base frame rank 2-1, the first lock base frame rank 2-1 thickness in pressure inlet 2 and the apposition position of liner body 1
For t/2, width is 2t, facilitates centering to be eliminated with misalignment, it is ensured that the opening endoporus 1-1 and the Excircle machining of pressure inlet 2 of liner body 1
Precision, makes liner body 1 with the circumferential weld pairing clearance control of pressure inlet 2 within 0.1mm.In the apposition position of liner body 1, ring is set
Ring 3 is sewed up, the thickness that circumferential weld connects ring 3 is 3/2t, and width is 10~15t.Net-filter assembly 4 includes filter screen 4-1 and filter screen reinforcing ring
4-2, sets filter screen reinforcing ring 4-2, filter screen reinforcing ring 4-2 thickness is t, and width is 4~5t in filter screen 4-1 both sides of edges.T is
The wall thickness of the liner body 1.Liner body 1 is using the shaping of sheet material deep drawn or thermoforming, using wire cutting or laser cutting
Remove periphery surplus, the endoporus 1-1 of reprocessing liner body 1, machining accuracy according toIt is controlled.Pressure inlet 2 uses machine
Tool is shaped, and pressure inlet 2 is cylindrical to set first to lock base frame rank 2-1 with the docking location of liner body 1.First lock base frame rank 2-1
It is required that carrying out back chipping processing, it is ensured that be less than 0.1mm with the pairing post gap of liner body 1.Pressure inlet is carried out on pressure inlet weld clip 6
2 with the assembling and welding of liner body 1.It will take over mouth 2 to be enclosed on pressure inlet locating shaft 6-1, the bottom surface of pressure inlet 2 and pressure inlet
Weld clip locating surface 6-2 is sturdy.Liner body 1 is assembled, making the endoporus 1-1 of liner body, to be enclosed on the flange of pressure inlet 2 cylindrical, and with the
The one lock base frame rank 2-1 and pressure inlet weld clip locating surface 6-2 is sturdy.Liner body 1 is cylindrical to be held round and centering, rotates axis of cone 6-
5 travel forward, and conical surface 6-6 radially promotes fagging 6-7, and fagging front end arc surface 6-8 supports the liner body 1
Circle, centering.Secure liner body 1, pressure ring 6-9 is enclosed on liner body 1 is cylindrical, makes pressure ring 6-9 bore circular arc face and liner
The outer wall of body 1 is sturdy, centering pressure ring 6-9, is fixed pressure ring 6-9 with screw rod 6-10.Pressure inlet 1 carries out tack welding, adjusts laser
Welding gun head makes pipette tips guide feux rouges center to be directed at the girth joint center of pressure inlet 2.The feux rouges center alignment connects with described
The girth joint centre deviation of ozzle 2 is not more than 0.3mm, welding parameter：Laser power 1.1-1.5kW, weldering speed 1.5-1.8m/min, from
Jiao's amount is 0mm, side-blown protection atmospheric pressure 0.25MPa, the long 3-5mm of anchor point, spacing 20-30mm.Pressure inlet 2 carries out sequential welding
Connect.Regulation laser welding pipette tips make pipette tips guide feux rouges center alignment pressure inlet 2 girth joint center, the alignment of feux rouges center with it is described
The girth joint centre deviation of pressure inlet 2 is not more than 0.3mm, welding parameter：When the material thickness of liner body 1 is 0.8-1.2mm
When, laser power is 0.9-1.3KW；When the inner lining material thickness is 1.2-1.8mm, laser power is 1.3-1.8KW；When
When the inner lining material 1 is thickness 1.8-2.5mm, laser power is 1.8-2.4KW, weldering speed 1.0-1.2m/min, defocusing amount for+
3mm, side-blown protection atmospheric pressure 0.25MPa, continuous laser, 5~10mm of girth joint remelting length.Pressure inlet 2 carries out circumferential weld and receives arc
Hole is handled.After the overlapping 5~10mm length of circumferential weld of pressure inlet 2, carry out the slow drop of laser power and receive arc, laser welding pipette tips keep former
Speed of welding is moved on, and laser power decays to 0, die-away time T=(2~3) W/V, wherein W by former bonding power along straight line
It is speed of welding for weld width, V, after laser stops light extraction, pipette tips can stop motion.
The filter screen rigging position line is delineated in the inwall of liner body 1, net-filter assembly 4 is positioned over inside liner body 1, made
The outer ledge of net-filter assembly 4 is flushed with institute scribe line.Filter screen 4-1 is clipped in the middle by Inner filter net reinforcing ring 4-2, then with diffusion welding (DW) or
Person's electric resistance welding is firm.Filter screen reinforcing ring 4-2 outside diameters are more than the internal diameter of liner body 1, i.e. 0.03~0.05mm magnitudes of interference.
Filter screen reinforcing ring 4-2 is same material with liner body 1.Filter screen reinforcing ring 4-2 be in contact with liner body 1 position carry out
Angle welding tack welding.It is required that laser welding pipette tips guiding feux rouges center alignment angle Weld pipe mill deviation is not more than 0.3mm, pipette tips folder
Angle is 45 °, welding parameter：Laser power 0.5-0.7kW, weldering speed 1.5-1.8m/min, defocusing amount are 0mm, side-blown protection air pressure
The long 3-5mm of power 0.25MPa, anchor point, spacing 20-30mm.Filter screen reinforcing ring 4-2 carries out sequential welding.It is required that laser welding pipette tips
Guiding feux rouges center is directed at the angle welding centre deviation and is not more than 0.3mm, and pipette tips angle is 45 °, welding parameter：Laser power
0.9-1.1kW, weldering speed 1.5-1.8m/min, defocusing amount are+3mm, side-blown protection atmospheric pressure 0.25MPa, continuous laser, girth joint
5~10mm of remelting length.
Circumferential weld connects ring 3 can be using machining shaping after sheet material rolling volume, welding.Circumferential weld connects the both sides of ring 3 and is machined with lock respectively
After base frame rank, with the grafting of liner body 1, flush with outer surface is kept, assembling misalignment is eliminated, while ensureing part processing precision, makes
Pairing clearance control is within 0.1mm at two.The liner body 1 that two pieces is welded with into pressure inlet 2 and net-filter assembly 4 is set with
Connect in the circumferential weld on the second lock base frame rank 3-1 on the both sides of ring 3, apply certain pressure in the bottom of liner body 1, make girth joint pair
Close.Second lock base frame rank 3-1 thickness is t/2, and width is 2t, and t is the wall thickness of liner body 1.Second lock base frame rank 3-1 require into
The processing of row back chipping.Circumferential weld connects ring 3 and carries out circumferential weld tack welding, and regulation laser welding pipette tips guiding feux rouges is directed at the circumferential weld.Laser
Welding gun head guides feux rouges center to be not more than 0.3mm, welding parameter with circumferential weld centre deviation：Laser power 1.3-1.5kW, weldering speed
1.4-1.6m/min, defocusing amount is 0mm, side-blown protection atmospheric pressure 0.25MPa, the long 3-5mm of anchor point, spacing 20-30mm.Ring
Ring 3 is sewed up continuously to be welded.Adjust laser welding pipette tips guiding feux rouges and be directed at the circumferential weld, laser welding pipette tips guiding feux rouges
Center is not more than 0.3mm with circumferential weld centre deviation, and when the material thickness of liner body 1 is 0.8-1.2mm, laser power is
0.9-1.3KW；When the inner lining material thickness is 1.2-1.8mm, laser power is 1.3-1.8KW；When the inner lining material 1
During for thickness 1.8-2.5mm, laser power is 1.8-2.4KW, and weldering speed 1.0-1.2m/min, defocusing amount is+3mm, side-blown protection
Atmospheric pressure 0.25MPa, continuous laser, 5~10mm of girth joint remelting length.Circumferential weld connects ring 3 and carries out circumferential weld receipts arc crater processing.It is described
Circumferential weld is connect after the overlapping 5~10mm length of circumferential weld of ring 3, receives arc using the slow drop of laser power, at this moment laser welding pipette tips keep former
Speed of welding is moved on, and laser power decays to 0, die-away time T=(2~3) W/V by former bonding power along straight line, wherein
W is that weld width, V are speed of welding.After laser stops light extraction, pipette tips can stop motion.
It should be noted last that, above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (10)
1. a kind of method for laser welding of spherical high-pressure gas cylinder wall metal inner lining, it is characterised in that the metal inner lining includes two
Half liner body (1), pressure inlet (2) and net-filter assembly (4)；The pressure inlet (2) is set with liner body (1) apposition position
There is the first lock base frame rank (2-1), two halves liner body (1) apposition position is provided with circumferential weld and connects ring (3), the net-filter assembly
(4) filter screen (4-1) and filter screen reinforcing ring (4-2) are included, the filter screen reinforcing ring (4-2) is fixed on the liner body (1)
On inwall, to wrap the edge for setting the filter screen (4-1)；
The method for laser welding includes：
The pressure inlet (2) is welded at the endoporus of the liner body (1) by the described first lock base frame rank (2-1)；
The filter screen (4-1) is welded in the liner body (1) by the filter screen reinforcing ring (4-2)；
Ring (3) is connect by the circumferential weld to weld the two halves liner body (1).
2. welding method according to claim 1, it is characterised in that：
Described first lock base frame rank (2-1) thickness is t/2, and width is 2t；The thickness that the circumferential weld connects ring (3) is 3/2t, width
For 10~15t；The thickness of the filter screen reinforcing ring (4-2) is t, and width is 4~5t；T is the wall thickness of the liner body (1).
3. welding method according to claim 1, it is characterised in that：
The assembling and welding of the pressure inlet (2) and the liner body (1) are carried out on pressure inlet weld clip (6)；
The pressure inlet (2) carries out tack welding, and regulation laser welding pipette tips make pipette tips guide feux rouges center to be directed at the pressure inlet
(2) the first lock base frame rank (2-1) and the girth joint center of liner body (1) apposition position on；
The pressure inlet (2) carries out continuous welding and receives arc crater processing with circumferential weld.
4. welding method according to claim 3, it is characterised in that：
The pressure inlet (2) is enclosed on the pressure inlet locating shaft (6-1), pressure inlet (2) bottom surface and the pressure inlet
Weld clip locating surface (6-2) is sturdy；
The liner body (1) is assembled, making the endoporus (1-1) of the liner body, to be enclosed on the pressure inlet (2) flange cylindrical, and
It is sturdy with the described first lock base frame rank (2-1) and the pressure inlet weld clip locating surface (6-2)；
The liner body (1) is cylindrical to be held round and centering, is rotated the axis of cone (6-5) and is travelled forward, the conical surface (6-6) is by fagging (6-7)
Radially promote, fagging front end arc surface (6-8) holds round the liner body (1), centering；
The fixed liner body (1), is enclosed on liner body (1) by pressure ring (6-9) cylindrical, makes the pressure ring (6-9) endoporus
Arc surface and liner body (1) outer wall are sturdy, pressure ring described in centering (6-9), with screw rod (6-10) by the pressure ring (6-9)
It is fixed.
5. welding method according to claim 3, it is characterised in that：
After the overlapping 5~10mm length of circumferential weld of the pressure inlet (2), carry out the slow drop of laser power and receive arc, laser welding pipette tips are protected
Hold former speed of welding to move on, laser power decays to 0, die-away time T=(2~3) W/V by former bonding power along straight line,
Wherein W is that weld width, V are speed of welding, and after laser stops light extraction, pipette tips can stop motion.
6. welding method according to claim 1, it is characterised in that：
The filter screen rigging position line is delineated in liner body (1) inwall, the net-filter assembly (4) is positioned over the liner
Body (1) is internal, the net-filter assembly (4) outer ledge is flushed with institute scribe line；
The filter screen (4-1) is clipped in the middle by the filter screen reinforcing ring (4-2), firm welding；
The filter screen reinforcing ring (4-2) be in contact with liner body (1) position carry out angle welding tack welding；
The filter screen reinforcing ring (4-2) carries out sequential welding.
7. welding method according to claim 6, it is characterised in that：
Filter screen reinforcing ring (4-2) outside diameter is more than liner body (1) internal diameter.
8. welding method according to claim 6, it is characterised in that the filter screen reinforcing ring (4-2) and liner body (1)
The position progress angle welding tack welding that is in contact includes：
Laser welding pipette tips guiding feux rouges center alignment angle Weld pipe mill deviation is not more than 0.3mm, and pipette tips angle is 45 °, welding
Parameter：Laser power 0.5-0.7kW, weldering speed 1.5-1.8m/min, defocusing amount are 0mm, side-blown protection atmospheric pressure 0.25MPa, determined
The long 3-5mm in site, spacing 20-30mm.
9. welding method according to claim 1, it is characterised in that：
The two halves liner body (1) for being welded with the pressure inlet (2) and net-filter assembly (4) is set in the circumferential weld and connects ring
(3) on the second lock base frame rank (3-1) on both sides, apply certain pressure in two halves liner body (1) bottom, make girth joint pair
Close；
The circumferential weld connects ring (3) and carries out circumferential weld tack welding, and regulation laser welding pipette tips guiding feux rouges is directed at the circumferential weld；
The circumferential weld connects ring (3) and carries out continuous welding and circumferential weld receipts arc crater processing.
10. welding method according to claim 9, it is characterised in that：
Described second lock base frame rank (3-1) thickness is t/2, and width is 2t, and t is the wall thickness of liner body.
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| CN106392325B (en) * | 2016-11-15 | 2018-07-06 | 湖北三江航天红阳机电有限公司 | A kind of method for laser welding of stainless steel thick-walled pressure vessel |
| CN109396644A (en) * | 2018-11-27 | 2019-03-01 | 上海航天精密机械研究所 | Eliminate the method that Laser Welding receives arc crater |
| CN109454330B (en) * | 2018-11-30 | 2020-10-09 | 上海航天精密机械研究所 | Circular seam lock bottom joint and manufacturing and welding method thereof |
| CN113020771B (en) * | 2021-03-23 | 2022-05-20 | 中国兵器科学研究院宁波分院 | Welding device and welding method for welding annular lap joint on lap joint piece |
| CN116748683A (en) * | 2023-08-23 | 2023-09-15 | 布柯玛蓄能器张家口有限公司 | Laser welding production process of diaphragm type energy accumulator shell |
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| EP1855046A1 (en) * | 2005-03-02 | 2007-11-14 | Toyota Jidosha Kabushiki Kaisha | Gas container and method of producing the same |
| KR20060107126A (en) * | 2005-04-07 | 2006-10-13 | 두원중공업(주) | Manufacturing method and aluminum liner of the high pressure aluminum tank |
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