CN104014912A - Titanium and titanium alloy component arc welding adding material remanufacturing method - Google Patents
Titanium and titanium alloy component arc welding adding material remanufacturing method Download PDFInfo
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- CN104014912A CN104014912A CN201410251461.6A CN201410251461A CN104014912A CN 104014912 A CN104014912 A CN 104014912A CN 201410251461 A CN201410251461 A CN 201410251461A CN 104014912 A CN104014912 A CN 104014912A
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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
- 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
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
-
- 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
-
- 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
- B23K9/32—Accessories
- B23K9/321—Protecting means
-
- 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
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
Abstract
The invention discloses a titanium and titanium alloy component arc welding adding material remanufacturing method. In the arc welding adding material remanufacturing process, the pulse MIG welding technology is adopted, the mode of metal transfer is spray transfer, a double-microdomain adjusting mode is adopted in gas protection, the appearance structure is a bell jar type or a ship type, and a front stretching and back extending mode is adopted in protection gas supplying and non-supplying; the inclination angle theta and the inclination angle omega of opposite welding lines of a welding gun are controlled; argon or argon-helium or helium-argon or helium is adopted as the double-microdomain protection gas; an arc welding robot is adopted to control the moving speed and posture of the welding gun. The titanium and titanium alloy component arc welding adding material remanufacturing method solves the problems of gas protection, technology optimization and quality control in the titanium and titanium alloy component MIG arc welding adding material remanufacturing, adding material remanufacturing of abraded or broken titanium and titanium alloy components is achieved, the gas protection structure is simple, easy to use and good in protection effect, a sealing gas chamber is not needed, more than 40 percent of materials can be saved, the thermal input can be reduced by more than 20 percent, and the titanium and titanium alloy component arc welding adding material remanufacturing quality is improved.
Description
Technical field
The present invention relates to a kind of arc-welding reproducing method, particularly relate to a kind of titanium or titanium alloy member MIG arc-welding and increase material reproducing method, belong to manufacturing engineering technical field again.
Background technology
Titanium or titanium alloy material is because having that specific strength is high, density is low and the excellent specific property such as corrosion-resistant has been used widely in Aero-Space, ocean shipping, energy source and power and field of petrochemical industry, the interconnection technique that can be used for titanium or titanium alloy material mainly contains Laser Welding, electron beam welding, laser-arc hybrid welding in industry, friction stir welding, cementing, active soldering and solder etc., wherein MIG welding procedure because deposition rate is fast, good economy performance, be easy to automation and form one of titanium alloy interconnection technique into important.U.S. M.W technology company and Creare company etc. are studied titanium alloy gas metal-arc welding technology, and having designed and produced distribution of gas pipeline system comes mentioned nozzle area and back-protective; Arc welding process parameter is optimized; Take 120iLT robot, Power Wave455R Arc Welding Power and Wave Designer welding, to control software be chief component; built the real-time robot control system of titanium alloy pulse gas metal-arc welding, and the welding manufacture for titanium alloy fighting machine and M240 machine gun titanium alloy casing by this technological achievement.No.China Shipbuilding Industry Group Co.ltd. 725 Institute is for titanium or titanium alloy large-sized structural parts; particularly many, the distribution space position of weld seam quantity and complicated thin-walled part muscle part welding; also develop the manual welding technique of titanium or titanium alloy, and declared patent < < titanium or titanium alloy consumable electrode noble gas protective welding technique > > (publication number: CN101462194A).
Current, energy crisis is day by day serious, environmental protection pressure constantly increases, and the manufacturing issue again of titanium or titanium alloy member becomes increasingly conspicuous.Compare with the common solder technology as Metal Bonding Technology; titanium or titanium alloy MIG arc-welding increases material manufactures and arc welding process, gas shield, heat input and mode of metal transfer etc. is required more special and harsh, and existing MIG welding technology is difficult to meet and increases material and manufacture needs again.
Summary of the invention:
The present invention repairs problem and provides a kind of titanium or titanium alloy member MIG arc-welding to increase material reproducing method for titanium or titanium alloy component damage just, its objective is can be for concrete damage type, gas shield strategy and welding procedure scheme are provided, solve titanium or titanium alloy member and increase the size of material in manufacturing again, a Properties Control difficult problem, realize accurately manufacturing and be shaped again of titanium or titanium alloy member, to improve arc-welding repairing quality, improve stock utilization and production efficiency, solve traditional manual MIG weldering stock utilization low, heat input is large, need air chamber airtight, poor and the large problem of labor intensity of operating staff of gas shield control.
For addressing the above problem, the technical solution used in the present invention is as follows:
A kind of titanium or titanium alloy member arc-welding of the present invention increases material reproducing method, it is characterized in that described increasing material reproducing method comprises:
--welding manner: mode of metal transfer is spray transfer, gas shield adopts two microcell control methods, welding process adopts industrial robot to control, arc-welding again manufacturing process adopts the integrated adjusting under pulse mode, concrete welding parameter is as follows: gage of wire 0.8mm～1.2mm, wire feed rate 6.5m/min～12.0m/min, speed of welding 8mm/s～15mm/s, , inductance correction-3%～+ 3%, arc length correction-2.4～+ 2.6, molten bath microcell shield gas flow rate 22L/min～28L/min, weld seam microcell shield gas flow rate 12L/min～35L/min, under above-mentioned technique, can guarantee that droplet size is less, profile is more regular, and do not rotate in motion process, being conducive to the damaged feature of molten drop and member better coincide, realize profiling reparation, heat input is reduced, welding wire consumption reduces,
--welding gun pose is manufactured in arc-welding again: arc-welding again in manufacture process welding gun movement velocity constant; Welding gun and weld seam angle are 85 °～105 °, shown in Fig. 1; Welding gun and member base plan angle are 85 °～95 °, shown in Fig. 2;
--the two microcell contour structures of gas shield are bell-shaped or ship boat type, the two microcell gas shield construction profile of bell-shaped are similar to bell jar, mainly by molten bath microcell and weld seam microscopic chemical composition, molten bath microcell mainly consists of the protective gas of the welding gun of flowing through, bell jar is divided into inside and outside two-layer, internal layer is laid with evenly distributed pore, serve as reasons the flow through protective gas of protective cover internal layer pore of weld seam microcell forms relatively airtight guard space, and Fig. 3 is the two microcell gas shield structural representations of bell-shaped, the purposes of the two microcell gas shield structures of ship boat type is in time by welding region and outside air isolation, and guarantee in whole welding process that molten bath and welded seam area can both be carried out effectively airtight, its profile is similar to inverted canoe, by rigid body and flexible accessory body, formed, mid portion is rigid body, adopt stainless steel or aluminium, the metal materials such as copper are made, the protruding part in front and back is flexible accessory body, adopt high-temperature-resistant flexible material to make, flexible material is conducive to realize fitting tightly of itself and component surface, effectively prevent that outside air from entering, thereby there is better protection effect, Fig. 4 is the front view of ship boat type protection structure, Fig. 5 is its top view,
The two microcell gas shield structures of bell-shaped i.e. a hollow round table, and welding gun is placed on hollow round table center, and round platform wall is also the hollow ectonexine that is divided into, and gas is provided with evenly distributed pore from outer perforate by internal layer, forms welding gun confined space relatively around.
The two microcell gas shield structures of ship boat type are identical with the two microcell gas shield structure working principles of bell-shaped, and structure is similar, and just shape difference is used for being applicable to multi-form damaged.
Flexible accessory body gear is in rigid body both sides, and rigid body is the metallic plate of several word shapes, forms welding gun relative confined space around with the flexible secondary body of both sides.Rigid body top layer is hollow, is divided into ectonexine, and gas is provided with evenly distributed pore from outer perforate by internal layer, enters into welding gun relative confined space around.Welding gun welds through rigid body top layer.
The two microcell contour structures of described bell-shaped gas shield are applicable to that point-like is damaged, circular arc type is damaged, thin-face type is damaged and breaking type is damaged; The two microcell contour structures of described ship boat type gas shield are applicable to that point-like is damaged, linear pattern is damaged, thin-face type is damaged and breaking type is damaged.
--protective gas prolongs mode after adopting and protracting: 5 seconds～10 seconds in advance start gas shield, then start the starting the arc; After blow-out, keep in the constant situation of welding gun pose, continue feed protective gas 15 seconds～35 seconds;
--the selection of protective gas: in arc welding process, region, molten bath adopts helium or the protection of helium-argon, this is because helium is when effectively isolating ambient atmos, also welding arc stability and forming quality is had to material impact.On the one hand, add after helium, welding arc can be more stable, is conducive to improve uniformity and the uniformity of weld seam; Simultaneously, adding of helium can also reduce surface tension, improves mobility and the wetability in molten bath, is conducive to obtain good weld seam and more smooth reparation surface, wire feed rate hour effect is more obvious, and arc-welding all adopts as far as possible little wire feed rate while manufacturing conventionally again.Expensive in view of helium, therefore, add a small amount of economical and practical argon gas to protect.Arc-welding is manufactured shaping welded seam area again and is adopted argon or the protection of argon-helium gas mixture body, and this is because protective gas mainly plays isolation outside air in weld seam cooling procedure, therefore adopts argon gas or argon-helium gas mixture body of relative low price.Helium, helium-argon, argon and argon-helium gas mixture body, recommend purity to reach more than 99.99%.
A kind of titanium or titanium alloy member arc-welding of the present invention increases material reproducing method, described in it two microcells regulation and control comprise can be respectively to molten bath microcell with manufacture again that formed weld microcell carries out gas flow and gaseous species is adjusted.
A kind of titanium or titanium alloy member arc-welding of the present invention increases material reproducing method, and described in it, damaged to comprise that maximum gauge is not more than the point-like of 10mm damaged for point-like; Described linear pattern is damaged, and to comprise that Breadth Maximum is not more than the line style of 3mm damaged; Described circular arc type is damaged, and to comprise that minimum profile curvature radius is not less than the circular arc type of 10mm damaged; Described thin-face type is damaged comprises that depth capacity is not more than the planar damaged of 1.5mm; Described breaking type is damaged to be comprised and is not less than 1.5mm, minimum widith by minimum-depth to be not less than the block of 3mm damaged.
A kind of titanium or titanium alloy member arc-welding of the present invention increases material reproducing method, and when described in it, molten bath microcell adopts He-Ar mixed gas protection, the volume ratio of helium and argon gas is (8.5～9.5): (1.5～0.5); When described in it, weld seam microcell adopts the protection of argon-helium gas mixture body, the volume ratio of argon gas and helium is (9.0～9.5): (1.0～0.5).
By taking above technical scheme, the beneficial effect that the present invention has is:
A kind of titanium or titanium alloy member arc-welding of the present invention increases material reproducing method, in wearing and tearing, the increasing material of the titanium or titanium alloy member of fracture failure is manufactured in reparation again, the titanium or titanium alloy member MIG arc-welding gas shield regulation and control in manufacture process have again been solved, selection of Welding and arc-welding be the technical problem such as manufacturing dimension and performance recovery again, wearing and tearing have been realized, size restoration and the property retention of fracture titanium or titanium alloy member, compare with common titanium or titanium alloy arc-welding interconnection technique, material economy more than 40%, heat input has reduced more than 20%, improve the arc-welding of titanium or titanium alloy member and increased the size that material is manufactured again, Properties Control quality.
Accompanying drawing explanation
Fig. 1 is welding gun and weld seam angle schematic diagram;
Fig. 2 is welding gun and member base plan angle schematic diagram;
Fig. 3 is the two microcell gas shield structural representations of bell-shaped;
Fig. 4 is the front view of ship boat type protection structure;
Fig. 5 is Fig. 4 top view.
The specific embodiment
Embodiment 1
Use the titanium or titanium alloy arc-welding of invention to increase material reproducing method, carried out the reparation of point-like wearing and tearing (its greatest wear director degree 10mm, degree of depth 1.1mm), arc welding robot adopts IRB2400 arc welding robot, maximum load 16kg, the welding wire trade mark is TC4, gage of wire 1.0mm, adopts bell-shaped gas shield structure; Welding gun and weld seam angle are 105 °, welding gun and member base plan angle are 95 °, wire feed rate 12.0m/min, speed of welding 15mm/s, inductance correction+3%, arc length correction 2.6, microcell protective gas used in molten bath is He-Ar mixed gas, the volume ratio of its helium and argon gas is 9.5:0.5, flow 28L/min, and weld seam microcell protective gas used is argon-helium gas mixture body, the volume ratio of its argon gas and helium is 9.5:0.5, flow 35L/min, 5 seconds in advance start gas shield, then carry out the starting the arc; After blow-out, keep in the constant situation of welding gun pose, protective gas continues feed 35 seconds.
Compare with the manual metal argon arc welding of routine, point-like defect repair formability is good, splashes few, and heat input is little, and production efficiency improves, and uniformity, the uniformity of mother metal-weld metal zone tissue are better, and its crystallite dimension difference can reach in 200 μ m.
Embodiment 2
Use the titanium or titanium alloy arc-welding of invention to increase material reproducing method, carried out linear pattern wearing and tearing (wearing and tearing length 70mm, greatest wear width 3.0mm) reparation, arc welding robot adopts IRB2400 arc welding robot, maximum load 16kg, the welding wire trade mark is TC4, and gage of wire 1.2mm adopts ship boat type gas shield structure; Welding gun and weld seam angle are 85 °, welding gun and member base plan angle are 85 °, wire feed rate 6.5m/min, speed of welding 8mm/s, inductance correction-3%, arc length correction-2.6, microcell protective gas used in molten bath is He-Ar mixed gas, the volume ratio of its helium and argon gas is 8.5:1.5, flow 22L/min, weld seam microcell protective gas used is argon-helium gas mixture body, and the volume ratio of its argon gas and helium is 9.0:1.0, flow 12L/min, 10 seconds in advance start gas shield, then carry out the starting the arc; After blow-out, keep in the constant situation of welding gun pose, protective gas continues feed 25 seconds.
Welding process is stable, and face of weld is smooth, and scalelike mark is less, and microstructure is fine and close, and heat affected area is narrow, straight bead appearance and size uniformity, and molten wide variation is less than 0.3mm, and reinforcement variation is less than 0.2mm.
Embodiment 3
Use the titanium or titanium alloy arc-welding of invention to increase material reproducing method, carried out the reparation of circular arc type wearing and tearing (maximum radius of curvature 15mm), arc welding robot adopts IRB2400 arc welding robot, maximum load 16kg, the welding wire trade mark is TC4, gage of wire 0.8mm, adopt bell-shaped gas shield structure, welding gun and weld seam angle are 95 °, welding gun and member base plan angle are 95 °, wire feed rate 10m/min, speed of welding 12mm/s, inductance correction-3%, arc length correction 2.6, microcell protective gas used in molten bath is helium, flow 28L/min, weld seam microcell protective gas used is argon gas, gas flow 30L/min, within 10 seconds in advance, start gas shield, carry out again the starting the arc, after blow-out, keep in the constant situation of welding gun pose, protective gas continues feed 15 seconds.
Circular arc is repaired face of weld and is mainly brilliant white; there is a small amount of golden yellow; but occur without lead; flawless and pore; show that two domain structures have good gas shield effect, without special sealed gas chamber, protective gas consumption reduces more than 50%; welded seam area is mainly α ' martensitic phase, and heat affected area is mainly α ' acicular martensite and α phase equi-axed crystal.
Embodiment 4
Use the titanium or titanium alloy arc-welding of invention to increase material reproducing method, (depth capacity is not more than 1.5mm to have carried out sheet-type wearing and tearing,) reparation, arc welding robot adopts IRB2400 arc welding robot, maximum load 16kg, the welding wire trade mark is TC4, gage of wire 1.2mm, adopts ship boat type gas shield structure, wire feed rate 12.0m/min, speed of welding 15mm/s,, inductance correction+3%, arc length correction+2.6, molten bath microcell shield gas flow rate 28L/min, weld seam microcell shield gas flow rate 35L/min; Welding gun and weld seam angle are 105 °, and welding gun and member base plan angle are 85 °, and 10 seconds in advance start gas shield, then carry out the starting the arc; After blow-out, keep in the constant situation of welding gun pose, protective gas continues feed 35 seconds;
Repair surface and be brilliant white, without lead material, show that gas shield is effective, surface is without being mingled with and pore, and arc-welding repair layer is smooth, and reparation surface is the highest, its lowest position difference in height is not more than 0.5mm, and repair layer is organized as basket shape tissue.
Embodiment 5
Use the titanium or titanium alloy arc-welding of invention to increase material reproducing method, carried out breaking type component damage (minimum-depth 1.6mm, minimum widith 10mm) reparation, arc welding robot adopts IRB2400 arc welding robot, maximum load 16kg, the welding wire trade mark is TC4, gage of wire 0.8mm, adopt ship boat type gas shield structure, wire feed rate 6.5m/min, speed of welding 8mm/s, inductance correction+3%, arc length correction-2.6, molten bath microcell protective gas adopts helium, purity 99.99%, flow 22L/min, weld seam microcell protective gas adopts argon gas, purity 99.99%, gas flow 35L/min, welding gun and weld seam angle are 85 °, and welding gun and member base plan angle are 95 ° and start gas shield in 10 seconds in advance, then carry out the starting the arc, after blow-out, keep in the constant situation of welding gun pose, protective gas continues feed 35 seconds,
Repair face of weld defect few, in continuous welding reparation situation, gas shield is respond well, and production efficiency is high, and deposition efficiency can reach 600cm
3/ h, more than tensile strength reaches 850Mpa, meets member service demand.
Claims (4)
1. the arc-welding of titanium or titanium alloy member increases a material reproducing method, it is characterized in that comprising:
--welding manner: mode of metal transfer is spray transfer, concrete welding parameter is as follows: gage of wire 0.8mm～1.2mm, wire feed rate 6.5m/min～12.0m/min, speed of welding 8mm/s～15mm/s,, inductance correction-3%～+ 3%, arc length correction-2.4～+ 2.6, molten bath microcell shield gas flow rate 22L/min～28L/min, then manufacture formed weld microcell shield gas flow rate 12L/min～35L/min; Welding process adopts industrial robot to control;
--welding gun pose is manufactured in arc-welding again: arc-welding again in manufacture process welding gun movement velocity constant; Welding gun and weld seam angle are 85 °～105 °, and welding gun and member base plan angle are 85 °～95 °;
--gas shield adopts two microcell control methods, to molten bath microcell with manufacture formed weld microcell again and carry out gas flow and gaseous species adjustment; The two microcell contour structures of gas shield are bell-shaped or ship boat type;
--protective gas prolongs feed mode after adopting and protracting: 5 seconds～10 seconds in advance start gas shield, then carry out the starting the arc; After blow-out, keep in the constant situation of welding gun pose, protective gas continues feed 15 seconds～35 seconds;
--the selection of gas: in arc welding process, region, molten bath adopts helium or the protection of helium-argon, arc-welding is manufactured shaping welded seam area again and is adopted argon or the protection of argon-helium gas mixture.
2. the arc-welding of titanium or titanium alloy member increases material reproducing method according to claim 1, it is characterized in that: the two microcell contour structures of described bell-shaped gas shield are applicable to that point-like is damaged, circular arc type is damaged, thin-face type is damaged and breaking type is damaged; The two microcell contour structures of described ship boat type gas shield are applicable to that point-like is damaged, linear pattern is damaged, thin-face type is damaged and breaking type is damaged.
3. the arc-welding of titanium or titanium alloy member increases material reproducing method according to claim 1, it is characterized in that: when the selection of described protective gas is protected molten bath microcell helium-argon, the volume ratio of helium and argon gas is (8.5～9.5): (1.5～0.5.
4. the arc-welding of titanium or titanium alloy member increases material reproducing method according to claim 1, it is characterized in that: when the selection of described protective gas is manufactured the argon-helium-atmosphere of formed weld microcell again to arc-welding, the volume ratio of argon gas and helium is (9.0～9.5): (1.0～0.5).
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