CN105252121A - Welding structure for inner container longitudinal seam of stainless steel gas cylinder and welding method - Google Patents
Welding structure for inner container longitudinal seam of stainless steel gas cylinder and welding method Download PDFInfo
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- CN105252121A CN105252121A CN201510812633.7A CN201510812633A CN105252121A CN 105252121 A CN105252121 A CN 105252121A CN 201510812633 A CN201510812633 A CN 201510812633A CN 105252121 A CN105252121 A CN 105252121A
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- welding
- longitudinal joint
- stainless steel
- gas guide
- cooling water
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- 238000003466 welding Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 24
- 239000010935 stainless steel Substances 0.000 title claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 48
- 239000000498 cooling water Substances 0.000 claims description 34
- 239000011148 porous material Substances 0.000 claims description 30
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 210000000664 rectum Anatomy 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000009659 non-destructive testing Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000007705 chemical test Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 11
- 239000003949 liquefied natural gas Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 230000004927 fusion Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BQJTUDIVKSVBDU-UHFFFAOYSA-L copper;sulfuric acid;sulfate Chemical compound [Cu+2].OS(O)(=O)=O.[O-]S([O-])(=O)=O BQJTUDIVKSVBDU-UHFFFAOYSA-L 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- -1 lack of penetration Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
- B23K9/0253—Seam welding; Backing means; Inserts for rectilinear seams for the longitudinal seam of tubes
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/323—Combined coupling means, e.g. gas, electricity, water or the like
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention discloses a welding structure for an inner container longitudinal seam of a stainless steel gas cylinder and a welding method. The welding structure comprises a strip-shaped auxiliary board, wherein a main gas guide hole and a gas guide groove are formed in the strip-shaped auxiliary boar in the length direction; the main gas guide hole and the gas guide groove are arranged in parallel; a plurality of gas guide small holes are formed between the main gas guide hole and the gas guide groove; the two ends of the gas guide small holes are respectively communicated with the main gas guide hole and the gas guide groove; and the cross section of the gas guide groove and the cross section of the longitudinal seam to be welded are positioned in the same plane. The welding method comprises the following steps: rolling round; carrying out butt welding and spot welding; carrying out spot welding on run-on plates and run-off plates; clamping; and welding. According to the invention, an MIG automatic welding process is adopted, so that the primary input-cost of welding equipment is low; in a later using process, the input using and maintenance costs are relatively low and the working efficiency is improved greatly. By adopting the process in the invention, the qualification rate of nondestructive testing reaches 99.4% or above in an actual longitudinal seam welding process of an insulated gas cylinder and a cylinder for an LNG vehicle; and physical and chemical test projects completely meet standard requirements.
Description
Technical field
The present invention relates to the inner bag longitudinal seam welding technique of a kind of insulated gas cylinder and LNG car bottle, in particular a kind of Welding Structure of stainless steel cylinder liner longitudinal joint and welding method.
Background technology
Welded insulated gas cylinder and LNG car bottle (being also automobile liquefied natural gas bottle), primarily of inner bag and shell composition, are vacuum interlayer between inner bag and shell.In order to improve the heat insulation effect of gas cylinder, vacuum interlayer requires to vacuumize.The inner bag of gas cylinder is for storing cryogenic media, and the internal pressure produced after bearing cryogenic media vaporization; It is made up of inner bag front head assembly, inner bag cylindrical shell and inner bag rear head assembly three part.The shell of gas cylinder for the protection of the interior arrangement of gas cylinder, and plays the effect of isolated vacuum interlayer.At present, the making of inner bag cylindrical shell all adopts the trade mark to be that the mode that the stainless-steel sheet of 06Cr19Ni10 carries out welding after rolling up circle processes, and is usually referred to as inner bag longitudinal seam welding.Inner bag corrosion resistant plate thickness is generally no more than 6mm.
According to the standard-required of welded insulated gas cylinder and LNG car bottle, cylinder liner longitudinal joint requires complete penetraction and fusion in welding, and needs to carry out that 100% ray detection is qualified just can use afterwards.Such one side is to improve inner bag intensity, enables inner bag bear interior pressure, ensures the use safety of gas cylinder.Welding quality qualified on the other hand, can ensure the compactness of weld seam, is the essential condition ensureing gas cylinder layer vacuum.
06Cr19Ni10 is the one of austenitic stainless steel, and it has good cold and hot working performance, nonmagnetic, and has excellent cryogenic property, and therefore welded insulated gas cylinder and LNG car bottle all adopt this material manufacture.This trade mark stainless steel has good solderability on the whole, but works as the improper or residing environmental medium condition of process conditions not at that time, easily causes intercrystalline corrosion and HOT CRACK FOR WELDING P, weakens the crack resistance of welding.In addition, such as pore, lack of penetration, slag inclusion, incomplete fusion, weld crack, undercut, the weld defect such as overlap and arc crater may also be there is.If welding existing defects, then vacuum interlayer vacuum will be affected, thus have influence on the heat-insulating property of gas cylinder, cause the frequent discharge of gas cylinder safely valve, produce the waste of gas; More seriously the leakage of gas may cause the blast of gas cylinder, causes casualties and the loss of national wealth.Therefore how to reduce and even eliminate these weld defects, improve the welding quality of weld seam, become each enterprise urgent need to solve the problem.
Prior art, adopts Plasma Welding mostly.Adopt this welding procedure, due to PLASMA ARC WELDING equipment costly, disposable input ratio is larger.And this kind equipment welding parameter is more, require higher to the technical merit of welding operating personnel; Welding gun and control circuit also more complicated, the service life of nozzle is very low, the later stage drop into and maintenance cost high; In the process of welding, easily produce two arc drawback, and the observation in arcing region is looked into, and easily produces weld defect.
Also have part to adopt the mode of manual welding, but this welding procedure same weld seam needs to weld several times, also needs bevel just can complete for thickness of slab >=4mm, operating efficiency is low, and Non-Destructive Testing qualification rate is not high.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of Welding Structure and welding method of stainless steel cylinder liner longitudinal joint, improve welding efficiency and solder yield.
The present invention is achieved by the following technical solutions, Welding Structure of the present invention comprises bar shaped accessory plate, described bar shaped accessory plate offers leading pore and air slot along its length, described leading pore and air slot be arranged in parallel, dominate and between pore and air slot, be provided with multiple air-guide pore, the two ends of described air-guide pore are communicated with leading pore and air slot respectively, and the cross section of described air slot and the cross section of longitudinal joint to be welded are positioned at same plane.
Described bar shaped accessory plate is copper bar.The material of the high-termal conductivity selected is as transmitting medium.
As one of preferred embodiment of the present invention, described bar shaped accessory plate is aluminum strip, aluminum alloy bar or stainless steel strip.
For the ease of distribution of gas, the latus rectum of described leading pore is 3 ~ 10mm, and the latus rectum of described air-guide pore is 0.5 ~ 1.5mm, and the latus rectum of described air slot is 3 ~ 12mm.
Described bar shaped accessory plate offers cooling water hand-hole along its length and cooling water portals, and cooling water enters bar shaped accessory plate from cooling water hand-hole, then to portal outflow from cooling water.Logical cooling water circulation, can be delivered in cooling water by the heat produced in welding process, take away with the flowing of cooling water, prevent the generation of HOT CRACK FOR WELDING P.
As one of preferred embodiment of the present invention, the latus rectum that described cooling water hand-hole and cooling water portal is 4 ~ 12mm.
Use a welded welding method for described stainless steel cylinder liner longitudinal joint, comprise the following steps:
(1) volume circle
Corrosion resistant plate makes cylindrical shell through rolling up circle;
(2) to decorateeing weldering
Cylindrical shell being carried out butt welding in spot, forms longitudinal joint, is 0 ~ 1mm to dress gap;
(3) run-on tab and arc-extinguishing plate is put
The two ends of gas cylinder to be welded are along the same rectilinear direction of longitudinal joint spot welding run-on tab and arc-extinguishing plate respectively, and the center line of run-on tab and arc-extinguishing plate and longitudinal joint are on the same line;
(4) be installed
Be placed on by cylindrical shell in welding, make the cross section of the longitudinal joint on cylindrical shell and described air slot in same plane, cylindrical shell and described bar shaped accessory plate closely cooperate;
(5) weld
Logical high-purity argon protection gas in leading pore, logical mixed gas protected gas on welding gun, drags logical high-purity argon protection gas on cover at welding gun, carries out welding MIG weldering, start on run-on tab during the welding starting the arc, will continue after longitudinal seam welding completes to be welded on arc-extinguishing plate and stop;
Welding gun drags the protection gas on cover and bar shaped accessory plate to postpone 2 ~ 10s; Cooling water on bar shaped accessory plate postpones 5 ~ 30s, then closing device, and welding completes.
Described run-on tab and arc-extinguishing plate have two pieces respectively, and the gap between the gap between two pieces of run-on tabs, two pieces of arc-extinguishing plates and longitudinal joint are on the same line.Run-on tab and arc-extinguishing plate, can adopt two pieces of forms of splicing spot welding, also can adopt the form of monolithic.
Described stainless steel is 06Cr19Ni10, and welding procedure is: welding material is ER308LSi, and gage of wire is 0.9 ~ 1.6mm; Welding current is 180 ~ 260A, and weldingvoltage is 22.5 ~ 28.5V; Speed of welding is 30 ~ 50cm/min.
Described welding gun protection gas is that oxygen is argon-mixed, and during described oxygen is argon-mixed, Ar content is 98%, O
2content is 2%, and flow is 10 ~ 20L/min; Describedly drag cover and gas port protection gas to be the Ar of purity 99.99%, flow is 5 ~ 12L/min.
The present invention has the following advantages compared to existing technology: the present invention adopts MIG automatic welding process, and the disposable input cost such as welding equipment is low; And in the use procedure in later stage, the operation and maintenance cost of input is also lower, and operating efficiency also improves greatly.Welding operation of the present invention is simple, and less demanding to operating personnel, common welding operation work can be finished the work, and is beneficial to carrying out of work.Present invention process, by reserve during dress 0 ~ 1mm to dress clearance t, can through welding be improved, ensure weld seam complete penetraction and fusion in welding, prevent incomplete fusion and incomplete penetration defect.Logical oxygen content in welding gun is adopted to be the argon oxygen gas mixture of 2%, can refinement molten drop, reduce the critical current of spray transfer, reduce viscosity and the surface tension of metal liquid, thus prevent the defect such as pore and undercut; Drag in cover and in air slot at welding gun and pass into high-purity argon, because high-purity argon is inert gas, with the weld seam after the welding of inert gas parcel, there will not be oxidative phenomena, prevent the defects such as slag inclusion, overlap and arc crater.Adopt the mode of recirculated water to cool, the heat produced can be cooled, prevent the generation of HOT CRACK FOR WELDING P defect in welding process.By adjustment operating procedure and the reasonable set to the welding parameter such as welding current and weldingvoltage, the appearance of other weld defects can be effectively reduced.Adopt the technique in the present invention, in the actual longitudinal seam welding process of welded insulated gas cylinder and LNG car bottle, Non-Destructive Testing qualification rate reaches more than 99.4%; Physicochemical test project meets standard-required completely.
Accompanying drawing explanation
Fig. 1 is embodiment 1 welding job view;
Fig. 2 is welded structural representation;
Fig. 3 is the close-up schematic view at A position in Fig. 2;
Fig. 4 is the structural representation of embodiment 2.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figures 1 to 3, the Welding Structure of the present embodiment comprises copper bar 3, described copper bar 3 offers leading pore 302 and air slot 305 along its length, described leading pore 302 and air slot 305 be arranged in parallel, dominate and between pore 302 and air slot 305, be provided with multiple air-guide pore 304, the two ends of described air-guide pore 304 are communicated with leading pore 302 and air slot 305 respectively, and the cross section of described air slot 305 and the cross section of longitudinal joint to be welded 101 are positioned at same plane.
The latus rectum of leading pore 302 is 10mm, and the latus rectum of described air-guide pore 304 is 1.5mm, and the latus rectum of described air slot 305 is 12mm.
Copper bar 3 offers cooling water hand-hole 301 along its length and cooling water portals 303, and cooling water enters copper bar 3 from cooling water hand-hole 301, then to portal 303 outflows from cooling water.Logical cooling water circulation, can be delivered in cooling water by the heat produced in welding process, take away with the flowing of cooling water, prevent the generation of HOT CRACK FOR WELDING P.
The cooling water hand-hole 301 of the present embodiment and cooling water portal 303 latus rectum be 12mm.
A welded welding method for stainless steel cylinder liner longitudinal joint 101, comprises the following steps:
(1) volume circle
Corrosion resistant plate makes cylindrical shell 1 through rolling up circle;
(2) to decorateeing weldering
Cylindrical shell 1 is carried out butt welding in spot, form longitudinal joint 101, to the unfitness of butt that should ensure cylindrical shell 1 when decorateeing weldering, the minimax diameter difference of end face mismatch amount, cylindrical shell 1 and corner angle height should meet the standard-required of welded insulated gas cylinder and LNG car bottle, are 0 ~ 1mm to dress clearance t;
(3) run-on tab 2 and arc-extinguishing plate 4 is put
The two ends of gas cylinder to be welded are along the same rectilinear direction of longitudinal joint 101 spot welding run-on tab 2 and arc-extinguishing plate 4 respectively, and run-on tab 2 and arc-extinguishing plate 4 have two pieces respectively, and the gap between the gap between two pieces of run-on tabs 2, two pieces of arc-extinguishing plates 4 and longitudinal joint 101 are on the same line;
(4) be installed
Cylindrical shell 1 is positioned on the copper bar 3 of automatic welder(welding machine), makes the longitudinal joint 101 on cylindrical shell 1 and the air slot 305 on copper bar 3 in same plane.Start the hold-down mechanism on welding machine, the pressing plate on welding machine is pushed down cylindrical shell 1, guarantee that cylindrical shell 1 and copper bar 3 closely cooperate;
(5) weld
Start welding machine, cooling water brings into operation, and enters from the cooling water hand-hole 301 copper bar 3, and portals from cooling water and 303 get back to water tank.The heat produced by welding process middle cylinder body 1 passes to cooling water through copper bar 3, doing so avoids the ardent property influence factor of weld seam.Should lead to high-purity argon protection gas before welding on the leading pore 302 of copper bar 3, the air-guide pore 304 of protection gas on copper bar 3 enters in air slot 305, the longitudinal seam back side is played to the effect of protection, prevents weld seam be oxidized and produce weld defect.Logical mixed gas protected gas on welding gun, logical high-purity argon protection gas on cover is dragged at welding gun, carry out welding MIG weldering, start on run-on tab 2 during the welding starting the arc, to continue after longitudinal joint 101 has welded to be welded on arc-extinguishing plate 4 and stop, the starting the arc due to welding can be prevented so larger with receipts arc current variation in voltage, and cause weld defect;
Welding gun drags the protection gas on cover and copper bar 3 to postpone 2 ~ 10s; Cooling water on copper bar 3 postpones 5 ~ 30s, then closing device, and welding completes.
The stainless steel of the present embodiment is 06Cr19Ni10, and welding procedure is: welding material is ER308LSi, and gage of wire is 0.9 ~ 1.6mm; Welding current is 180 ~ 260A, and weldingvoltage is 22.5 ~ 28.5V; Speed of welding is 30 ~ 50cm/min.
The welding gun protection gas of the present embodiment is that oxygen is argon-mixed, and during described oxygen is argon-mixed, Ar content is 98%, O
2content is 2%, and flow is 10 ~ 20L/min; Describedly drag cover and gas port protection gas to be the Ar of purity 99.99%, flow is 5 ~ 12L/min.
Non-Destructive Testing.By above-mentioned welding method, according to welded insulated gas cylinder and LNG car bottle standard-required, carry out Non-Destructive Testing by standard JB/T4730.2-2005, the test piece for welding 100%II level of 500mm length is qualified.
Physicochemical test.Test piece for welding presses welded insulated gas cylinder and LNG car bottle standard-required, processes 1 tensile sample, 2 horizontal face-bend test specimens, and laterally carry on the back curved sample for 2,3 low-temperature impact samples, result of the test meets standard-required completely.Test specimen corrosion among crystalline grains is according to qualified after GB/T4334 method E sulfuric acid-copper sulphate etch test.
Embodiment 2
As shown in Figure 4, run-on tab 2 and the arc-extinguishing plate 4 of the present embodiment are one piece, and the center line of run-on tab 2 and arc-extinguishing plate 4 and longitudinal joint 101 are on the same line.
Other embodiments are identical with embodiment 1.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the Welding Structure of a stainless steel cylinder liner longitudinal joint, it is characterized in that, described Welding Structure comprises bar shaped accessory plate, described bar shaped accessory plate offers leading pore and air slot along its length, described leading pore and air slot be arranged in parallel, dominate and be provided with multiple air-guide pore between pore and air slot, the two ends of described air-guide pore are communicated with leading pore and air slot respectively, and the cross section of described air slot and the cross section of longitudinal joint to be welded are positioned at same plane.
2. the Welding Structure of a kind of stainless steel cylinder liner longitudinal joint according to claim 1, it is characterized in that, described bar shaped accessory plate is copper bar.
3. the Welding Structure of a kind of stainless steel cylinder liner longitudinal joint according to claim 1, it is characterized in that, described bar shaped accessory plate is aluminum strip, aluminum alloy bar or stainless steel strip.
4. the Welding Structure of a kind of stainless steel cylinder liner longitudinal joint according to claim 1, is characterized in that, the latus rectum of described leading pore is 3 ~ 10mm, and the latus rectum of described air-guide pore is 0.5 ~ 1.5mm, and the latus rectum of described air slot is 3 ~ 12mm.
5. the Welding Structure of a kind of stainless steel cylinder liner longitudinal joint according to claim 1, it is characterized in that, described bar shaped accessory plate offers cooling water hand-hole along its length and cooling water portals, and cooling water enters bar shaped accessory plate from cooling water hand-hole, then to portal outflow from cooling water.
6. the Welding Structure of a kind of stainless steel cylinder liner longitudinal joint according to claim 1, it is characterized in that, the latus rectum that described cooling water hand-hole and cooling water portal is 4 ~ 12mm.
7. use a welded welding method for stainless steel cylinder liner longitudinal joint as claimed in claim 1, it is characterized in that, comprise the following steps:
(1) volume circle
Corrosion resistant plate makes cylindrical shell through rolling up circle;
(2) to decorateeing weldering
Cylindrical shell being carried out butt welding in spot, forms longitudinal joint, is 0 ~ 1mm to dress gap;
(3) run-on tab and arc-extinguishing plate is put
The two ends of gas cylinder to be welded are along the same rectilinear direction of longitudinal joint spot welding run-on tab and arc-extinguishing plate respectively, and the center line of run-on tab and arc-extinguishing plate and longitudinal joint are on the same line;
(4) be installed
Be placed on by cylindrical shell in welding, make the cross section of the longitudinal joint on cylindrical shell and described air slot in same plane, cylindrical shell and described bar shaped accessory plate closely cooperate;
(5) weld
Logical high-purity argon protection gas in leading pore, logical mixed gas protected gas on welding gun, drags logical high-purity argon protection gas on cover at welding gun, carries out welding MIG weldering, start on run-on tab during the welding starting the arc, will continue after longitudinal seam welding completes to be welded on arc-extinguishing plate and stop;
Welding gun drags the protection gas on cover and bar shaped accessory plate to postpone 2 ~ 10s; Cooling water on bar shaped accessory plate postpones 5 ~ 30s, then closing device, and welding completes.
8. the welding method of a kind of stainless steel cylinder liner longitudinal joint according to claim 7, it is characterized in that, described run-on tab and arc-extinguishing plate have two pieces respectively, and the gap between the gap between two pieces of run-on tabs, two pieces of arc-extinguishing plates and longitudinal joint are on the same line.
9. the welding method of a kind of stainless steel cylinder liner longitudinal joint according to claim 7, it is characterized in that, described stainless steel is 06Cr19Ni10, and welding procedure is: welding material is ER308LSi, and gage of wire is 0.9 ~ 1.6mm; Welding current is 180 ~ 260A, and weldingvoltage is 22.5 ~ 28.5V; Speed of welding is 30 ~ 50cm/min.
10. the welding method of a kind of stainless steel cylinder liner longitudinal joint according to claim 7, is characterized in that, described welding gun protection gas is that oxygen is argon-mixed, and during described oxygen is argon-mixed, Ar content is 98%, O
2content is 2%, and flow is 10 ~ 20L/min; Describedly drag cover and gas port protection gas to be the Ar of purity 99.99%, flow is 5 ~ 12L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510812633.7A CN105252121B (en) | 2015-11-19 | 2015-11-19 | A kind of welding structure and welding method of stainless steel cylinder liner longitudinal joint |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112203A (en) * | 2016-04-05 | 2016-11-16 | 福建福船帆新能源装备制造有限公司 | A kind of slab tubular structure longitudinal seam welding controls the method for crackle |
| CN106735771A (en) * | 2016-12-28 | 2017-05-31 | 宜昌市瑞洋机械制造有限公司 | A kind of consumable electrode gas protection welding method of carbon steel material cylinder for liquefied gas |
| CN107511611A (en) * | 2017-08-23 | 2017-12-26 | 中车齐齐哈尔车辆有限公司 | A kind of longitudinal seam welding of barrel equipment |
| CN107932005A (en) * | 2017-12-21 | 2018-04-20 | 特洛伊五金（苏州）有限公司 | A kind of manufacture craft of door handle |
| CN108067707A (en) * | 2016-11-11 | 2018-05-25 | 宁波方太厨具有限公司 | A kind of stainless steel work-piece welding protection device |
| CN108705184A (en) * | 2018-07-24 | 2018-10-26 | 佛山科学技术学院 | A kind of stainless steel water tank welding procedure |
| CN109500486A (en) * | 2018-12-22 | 2019-03-22 | 山西汾西重工有限责任公司 | The positioning and welding method of longitudinal abutment joint of aluminium alloy thick plate edge rolling shell |
| CN109865966A (en) * | 2019-02-20 | 2019-06-11 | 武汉理工大学 | A kind of single welding brass cushion device with water cooling and back-protective and corresponding welding method |
| CN109940246A (en) * | 2019-05-08 | 2019-06-28 | 天津中车唐车轨道车辆有限公司 | Plug welding hole welding method |
| CN110653467A (en) * | 2018-06-29 | 2020-01-07 | 上海梅山钢铁股份有限公司 | Method for straight seam welding of air conditioner compressor shell |
| CN111055016A (en) * | 2020-01-06 | 2020-04-24 | 武汉大族金石凯激光系统有限公司 | Pipe laser welding machine |
| CN111099191A (en) * | 2019-12-03 | 2020-05-05 | 青岛双瑞海洋环境工程股份有限公司 | Corrosion-resistant protection method for ship metal composite plate container |
| CN111515567A (en) * | 2020-04-15 | 2020-08-11 | 常州博瑞电力自动化设备有限公司 | Longitudinal seam welding protection structure, barrel longitudinal seam welding device and corresponding welding method |
| CN111716078A (en) * | 2019-03-22 | 2020-09-29 | 上海梅山钢铁股份有限公司 | Plasma welding method for straight seam of thin-wall cylindrical steel shell |
| CN112157400A (en) * | 2020-09-07 | 2021-01-01 | 东风汽车股份有限公司 | Manufacturing method of 200L liquefied natural gas low-temperature and low-pressure gas cylinder for automobile |
| CN112247320A (en) * | 2020-10-20 | 2021-01-22 | 上海东鼎钢结构有限公司 | Large-caliber duplex stainless steel butt-joint protection welding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112203B (en) * | 2016-04-05 | 2018-06-01 | 福建福船一帆新能源装备制造有限公司 | A kind of method of slab tubular structure longitudinal seam welding control crackle |
| CN106112203A (en) * | 2016-04-05 | 2016-11-16 | 福建福船帆新能源装备制造有限公司 | A kind of slab tubular structure longitudinal seam welding controls the method for crackle |
| CN108067707A (en) * | 2016-11-11 | 2018-05-25 | 宁波方太厨具有限公司 | A kind of stainless steel work-piece welding protection device |
| CN106735771A (en) * | 2016-12-28 | 2017-05-31 | 宜昌市瑞洋机械制造有限公司 | A kind of consumable electrode gas protection welding method of carbon steel material cylinder for liquefied gas |
| CN107511611A (en) * | 2017-08-23 | 2017-12-26 | 中车齐齐哈尔车辆有限公司 | A kind of longitudinal seam welding of barrel equipment |
| CN107932005A (en) * | 2017-12-21 | 2018-04-20 | 特洛伊五金（苏州）有限公司 | A kind of manufacture craft of door handle |
| CN110653467A (en) * | 2018-06-29 | 2020-01-07 | 上海梅山钢铁股份有限公司 | Method for straight seam welding of air conditioner compressor shell |
| CN108705184A (en) * | 2018-07-24 | 2018-10-26 | 佛山科学技术学院 | A kind of stainless steel water tank welding procedure |
| CN109500486A (en) * | 2018-12-22 | 2019-03-22 | 山西汾西重工有限责任公司 | The positioning and welding method of longitudinal abutment joint of aluminium alloy thick plate edge rolling shell |
| CN109500486B (en) * | 2018-12-22 | 2023-01-03 | 山西汾西重工有限责任公司 | Method for positioning and welding longitudinal butt joint of aluminum alloy thick plate rolling shell |
| CN109865966A (en) * | 2019-02-20 | 2019-06-11 | 武汉理工大学 | A kind of single welding brass cushion device with water cooling and back-protective and corresponding welding method |
| CN111716078A (en) * | 2019-03-22 | 2020-09-29 | 上海梅山钢铁股份有限公司 | Plasma welding method for straight seam of thin-wall cylindrical steel shell |
| CN109940246A (en) * | 2019-05-08 | 2019-06-28 | 天津中车唐车轨道车辆有限公司 | Plug welding hole welding method |
| CN111099191A (en) * | 2019-12-03 | 2020-05-05 | 青岛双瑞海洋环境工程股份有限公司 | Corrosion-resistant protection method for ship metal composite plate container |
| CN111055016A (en) * | 2020-01-06 | 2020-04-24 | 武汉大族金石凯激光系统有限公司 | Pipe laser welding machine |
| CN111515567A (en) * | 2020-04-15 | 2020-08-11 | 常州博瑞电力自动化设备有限公司 | Longitudinal seam welding protection structure, barrel longitudinal seam welding device and corresponding welding method |
| CN111515567B (en) * | 2020-04-15 | 2022-03-08 | 常州博瑞电力自动化设备有限公司 | Longitudinal seam welding protection structure, barrel longitudinal seam welding device and corresponding welding method |
| CN112157400A (en) * | 2020-09-07 | 2021-01-01 | 东风汽车股份有限公司 | Manufacturing method of 200L liquefied natural gas low-temperature and low-pressure gas cylinder for automobile |
| CN112247320A (en) * | 2020-10-20 | 2021-01-22 | 上海东鼎钢结构有限公司 | Large-caliber duplex stainless steel butt-joint protection welding device |
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Denomination of invention: Welding structure for inner container longitudinal seam of stainless steel gas cylinder and welding method Effective date of registration: 20181227 Granted publication date: 20171103 Pledgee: Anhui Suzhou Huaihai Village and Town Bank Co., Ltd. Suzhou Jinhai Branch Pledgor: ANHUI DAAPAN SPECIAL EQUIPMENT VEHICLES CO., LTD. Registration number: 2018340000768 |
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Denomination of invention: Welding structure and welding method of longitudinal seam of stainless steel cylinder liner Effective date of registration: 20200927 Granted publication date: 20171103 Pledgee: Suzhou New Area Financing Guarantee Co.,Ltd. Pledgor: ANHUI DAPAN SPECIAL EQUIPMENT VEHICLE Co.,Ltd. Registration number: Y2020980006477 |
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Date of cancellation: 20210923 Granted publication date: 20171103 Pledgee: Suzhou New Area Financing Guarantee Co.,Ltd. Pledgor: ANHUI DAPAN SPECIAL EQUIPMENT VEHICLE Co.,Ltd. Registration number: Y2020980006477 |