CN105458470A - Material increase manufacturing method for titanium alloy shape part by using double-arc hybrid heat source - Google Patents
Material increase manufacturing method for titanium alloy shape part by using double-arc hybrid heat source Download PDFInfo
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- CN105458470A CN105458470A CN201610005235.9A CN201610005235A CN105458470A CN 105458470 A CN105458470 A CN 105458470A CN 201610005235 A CN201610005235 A CN 201610005235A CN 105458470 A CN105458470 A CN 105458470A
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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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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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
-
- 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 relates to a material increase manufacturing method for a titanium alloy shape part by using a double-arc hybrid heat source. The method comprises the following steps: MIG welding and TIG welding are originally combed, a welding wire as a melting electrode is sent out by an MIG welding gun and is subjected to surfacing on a base plate; an MIG power anode is connected with a TIG power anode, and an MIG power cathode is connected with the base plate, the MIG welding gun is connected with the MIG power anode, and a TIG welding gun is connected with a TIG power cathode; the MIG welding gun is in the front, and the TIG welding gun is in the back; the current of the welding wire is shunted through a TIG welding circuit, so that the current passing through the welding wire is large, and the current passing through a weldment is small. After the base plate completes a first surfacing layer, a hybrid welding gun is increased by a story height, and a second layer of shape part is welded; the above process is repeated, so that the titanium alloy shape part is formed by overlaying plurality of surfacing layer. The method has the advantages of being high in metal deposition rate, high in welding speed, less in weldment heat input, good in structural and mechanical properties of the shape part and low in cost and solves the problems of lager heat input, low welding speed, poor welding quality and low efficiency during material increase manufacturing of the traditional titanium alloy single TIG arc wire feeding.
Description
Technical field
The invention belongs to rapid prototyping & manufacturing technology field, be specifically related to a kind of titanium alloy shape part twin arc composite heat power supply and increase material manufacture method.
Background technology
Titanium alloy, with the combination property of its uniqueness, is widely used in aerospace field.And increase the important means that material manufacturing technology also becomes titanium alloy rapid shaping at present.For titanium alloy product, the main laser powder increasing material manufacturing technology that adopts carries out rapid shaping at present, and wire feeding mode increasing material manufacturing technology metal deposition efficiency is large, material use is high, smoke dust pollutes, and receives the increasing concern of people.In order to avoid the problem such as jackscrew, haircuts, the single TIG electric arc of main employing is as thermal source at present, titanium alloy wire materials is melted, as name is called " a kind of arc additive of titanium alloy structural part manufacture method ", publication number is the patent of invention of 102962547A, because TIG arc heat current density is little, translational speed is slow, and the raising of production efficiency is restricted; And adopting MIG welding heat source, metal wire material carries out from molten as consumable electrode, and metal deposition speed is high, but titanium alloy shape part affects larger by MIG weldering arc heat simultaneously; When thermal source moves and wire melting is very fast, in order to ensure appearance of weld, needing larger current, easily causing the tissue of goods and the sharply deterioration of mechanical property.
In order to increase metal deposition rate, improve weldering speed, avoid again workpiece overheated simultaneously, infringement weldment tissue, researcher is had to propose MIG+TIG bipolar electrode composite welding process, as name is called " the high-speed welding device of dual power supply bipolar electrode and welding method thereof ", publication number is the patent of invention of 102581446A.This patent is welded the electric current of bypass to MIG welding wire and weldment by TIG and is distributed and regulate, and achieves workpiece low_input_power, large deposition rate, high-speed welding process, thus is that the efficient increasing material manufacture of titanium alloy wire feeding mode provides guarantee.And document " StudyforTIG – MIGhybridweldingprocess " is different from described in this patent of invention with " mechanism is eliminated in high speed TIG-MIG Combined Welding weld seam hump and undercut " middle MIG+TIG composite arc welding procedure mechanism, it mainly utilizes the heat effect of both electric arcs to improve appearance of weld, there is no shunting action in device.In addition, relative to the welding procedure connecting different metal component, metal increases material manufacturing technology and is used for preparing component all or in part fast, and its shaping of solidifying Molten Pool Shape, motlten metal, tissue, performance requirement are more strict.Current MIG+TIG bipolar electrode composite welding process is mainly used in the welding aspect of the material such as steel plate, aluminum/magnesium alloy, not yet carries out research and apply titanium alloy shape part MIG+TIG composite heat power supply wire feed being increased to material manufacture view.
Summary of the invention
Technical problem: the object of the invention is for prior art Problems existing and deficiency, a kind of titanium alloy shape part twin arc composite heat power supply wire feed is provided to increase material manufacture method, under being intended to not increase the hot initial conditions of shape part, increase metal deposition rate and speed of welding, improve titanium alloy wire feed and increase material manufacture efficiency, solve traditional TIG electric arc wire feeding and increase the lower problem of material manufacture efficiency.
The present invention is by MIG weldering being welded organic assembling with TIG, forming major loop with MIG power supply, welding wire, substrate (shape part), and TIG welds power supply, welding wire, the bypass of TIG welding gun tungsten electrode composition, and welding wire is sent by MIG welding gun.Utilize TIG weldering loop to carry out differentiation to the electric current by MIG welding wire and weldment to regulate, during to ensure by MIG welding wire larger current, reduce the heat input acting on titanium alloy shape part.Therefore, this technique, by increasing electric current, improves deposition rate and the speed of welding of titanium alloy wire materials welding wire, turn avoid the overheated of titanium alloy shape part material simultaneously, thus overcome the problem that when TIG electric arc wire feeding increasing material manufactures, welding gun translational speed is lower, improve production efficiency.
Technical scheme: for achieving the above object, the technical scheme that technical solution problem of the present invention adopts is:
A kind of titanium alloy shape part twin arc composite heat power supply wire feed increases material manufacture method, comprises the steps:
1, MIG weldering is welded efficient coupling with TIG, MIG weldering positive source welds positive source with TIG and is connected, and both tie points are connected with MIG welding gun, and MIG welds power cathode and is connected with substrate, TIG welds power cathode and is connected with TIG welding gun, form the weldering of MIG+TIG composite heat power supply, i.e. compound welding gun, welding wire is sent by MIG welding gun, wherein, MIG welds power supply, welding wire, substrate composition major loop, and TIG welds power supply, welding wire, the bypass of TIG welding gun composition, for breaking up the electric current by welding wire;
2, cover is dragged by protective gas to be placed in above substrate weld seam, and settle TIG welding gun and MIG welding gun successively forward in the one end along welding direction, wherein TIG welding gun barral of a gun tilts backwards, a β angle is formed with base plan, and drag cover to fix with protective gas, MIG welding gun barral of a gun turns forward, and forms a α angle with base plan; TIG welding gun tungsten electrode end is d to the vertical range of MIG welding gun welding wire;
3, choose arcing point at substrate, first pre-logical protective gas 4-6s, then open the source of welding current, carry out ground floor built-up welding welding according to welding bead layout, per pass built-up welding floor height is 1-4mm, and layer is wide is 2-8mm; If layer is made up of multiple-pass weld, after completing front one weld seam, according to setting layout, carry out next road built-up welding by after compound welding gun sidesway 1-4mm, twice weld seam lap width is 1-4mm;
4, after completing ground floor shape part, close the source of welding current and carry out receipts arc, and continue logical protective gas 3-6s; Compound welding gun is improved 1-3mm, is moved to precalculated position, then carry out second layer weld deposit process on the first layer;
5, step 3 and step 4 is repeated, until complete the increasing material manufacture process of titanium alloy shape part;
6, according to size and required precision, titanium alloy shape part is heat-treated and machining.
In above-mentioned steps 1, described α angle is 60-80 °, and described β angle is 40-60 °, and described tungsten electrode end is 5-10mm to welding wire vertical range d.
In above-mentioned steps 3, described welding step first starts MIG weldering, and restart TIG weldering, treat 1-2s, TIG welds between tungsten electrode and welding wire after arc stability, then moves by the speed of welding of setting.
Above-mentioned steps 3-5, welding condition is: MIG welding current is 100-250A, TIG welding current is 100-250A, and be namely 200-500A by the total current of welding wire, speed of welding is 1-2m/min, and wire feed rate is 6-10m/min.
In above-mentioned steps 3; described protective gas is high-purity pure argon, helium or both mists of 99.999%; MIG weldering shield gas flow rate is 15-30L/min, TIG weldering shield gas flow rate is 12-25L/min, and protective gas drags cover gas flow to be 20-40L/min.
In above-mentioned steps 1, the material of described welding wire is any one in industrially pure titanium, TA7, TC1, TC4, and gage of wire is 1.0-1.6mm.
In step 3 described above, the material of described substrate is carbon steel or titanium alloy.
Technique effect: compared with prior art, the major advantage had and beneficial effect are in the present invention:
(1) make full use of MIG weldering and can adopt the features such as big current, metal deposition rate are high, the thermal source speed of service is fast, improve titanium alloy and increase material manufacture production efficiency.Compared with TIG electric arc wire feeding, the thermal source speed of service of the present invention can improve 80%-350%, thus efficiently solves the slow problem of the common single TIG electric arc wire feeding increasing material manufacture speed of service of titanium alloy.
(2) using silk material metal as consumable electrode, the appearance of the problem such as haircuts, jackscrew under high gait of march can be avoided compared with TIG electric arc wire feeding better, further increase the stability of process.
(3) shunting action of TIG weldering bypass then avoids the overheated of titanium alloy shape part, and compared with welding with single MIG, heat reduces 40%-60%; Compared with TIG electric arc wire feeding, heat also can reduce 20-40%, improves tissue and the mechanical property of shape part further.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that titanium alloy shape part twin arc composite heat power supply wire feed of the present invention increases material manufacture method,
In figure, 1 is MIG welding gun, and 2 is welding wire, and 3 is TIG welding gun, and 4 drag cover air inlet for protective gas, and 5 is that MIG welds power supply, and 6 is TIG weldering power supply, and 7 drag cover for protective gas, and 8 is substrate, I
tigfor TIG welds welding current, I
migfor MIG welding current, I
totalfor the total current by welding wire, α is the angle between MIG welding gun and base plan, and β is the angle between TIG welding gun and base plan, and d is the vertical range of tungsten electrode end to welding wire.
Fig. 2, (a) is embodiment 1 and embodiment 2 titanium alloy shape part schematic diagram, and (b) is welding gun scanning pattern schematic diagram,
In figure: 8 is substrate, 9 is titanium alloy shape part, and H is titanium alloy shape part height, and W is titanium alloy shape part width.
Fig. 3, (a) is welding gun scanning pattern schematic diagram for embodiment 3 titanium alloy shape part schematic diagram, (b),
In figure: 8 is substrate, 9 is titanium alloy shape part.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
As shown in Figure 1, for a kind of titanium alloy shape part twin arc composite heat power supply wire feed of the present invention increases material manufacture method, comprise the steps:
(1) MIG is welded power supply 5 positive pole to weld power supply 6 positive pole with TIG and be connected, then be connected with MIG welding gun 1; MIG welds power supply 5 negative pole and is connected with substrate 8, and TIG weldering power supply 6 negative pole is connected with TIG welding gun 3, form the weldering of MIG+TIG composite heat power supply, i.e. compound welding gun, and welding wire 2 is sent by MIG welding gun 1.Weld power supply 5 by MIG, welding wire 2 forms major loop with substrate (shape part) 8, and TIG weldering power supply 6, TIG welding gun 3 and welding wire 2 form shunting circuit.
(2) cover 7 is dragged by protective gas to be placed in above substrate 8 weld seam, and settle TIG welding gun 3 and MIG welding gun 1 successively forward in the one end along welding direction, wherein the barral of a gun of TIG welding gun 3 tilts backwards, a β angle is formed with the plane of substrate 8, and drag cover 7 to fix with protective gas, the barral of a gun of MIG welding gun 1 turns forward, and forms a α angle with the plane of substrate 8; The tungsten electrode end of TIG welding gun 3 is d to the vertical range of the welding wire of MIG welding gun 1;
(3) choose arcing point at substrate 8, pre-aeration 4-6s, first start MIG weldering, restart TIG weldering, after 1-2s composite arc is stable, carry out ground floor built-up welding welding according to welding bead layout.If layer is made up of multiple-pass weld, after completing front one weld seam, according to setting layout, carry out next road built-up welding by after compound welding gun sidesway 1-4mm, twice weld seam lap width is 1-4mm.
(4) after completing ground floor shape part, close the source of welding current and carry out receipts arc, and continue ventilation 3-6s; Combined Welding welding gun is improved 1-3mm, is moved to precalculated position, then carry out second layer weld deposit process on the first layer.
(5) step (3) and (4) is repeated, until complete titanium alloy product or parts increasing material manufacture process.
(6) according to size and required precision, suitable subsequent heat treatment and machining are carried out to goods/parts.
In above-mentioned steps (1), MIG welding gun 1 and TIG welding gun 3 are in same plane, MIG welding gun 1 is front, TIG welding gun 3 is rear, tungsten electrode end is 5-10mm to welding wire vertical range d, MIG welding gun 1 and substrate 8 Plane Angle α are 60-80 °, TIG welding gun 3 is 40-60 ° with substrate 8 Plane Angle β.
In above-mentioned steps (3)-(5), MIG welding current I
migfor 100-250A, TIG welding current I
tigfor 100-250A, namely by the total current I of welding wire
totalfor 200-500A, speed of welding is 1-2m/min, and wire feed rate is 6-10m/min.
Above-mentioned steps (3) protective gas is 99.999% high purity argon, helium or both mists; it is 15-30L/min that MIG welds shield gas flow rate; it is 12-25L/min that TIG welds shield gas flow rate, and protective gas drags cover 7 gas flow to be 20-40L/min.
In above-mentioned steps (3), during welding, first start MIG weldering, restart TIG weldering, treat 1-2s, TIG welds between tungsten electrode and welding wire 2 after arc stability, and carry out high speed built-up welding welding, per pass built-up welding floor height is 1-4mm, and layer is wide is 2-8mm.
In step described above (1), welding wire 2 can be the titanium alloy such as industrially pure titanium, TA7, TC1, TC4 welding wire and other can make the titanium or titanium alloy material of welding wire, and welding wire 2 diameter is 1.0-1.6mm
In step described above (3), substrate 8 is carbon steel or titanium alloy.
Embodiment 1
As shown in Fig. 2 (a) He (b), titanium alloy shape part 9 height H is 120mm, and width W is 20mm, is formed by 100 layers of overlay cladding, every layer of built-up welding floor height 1.2mm, and the built-up welding of Mei Ceng 13 road is welded.Welding procedure platform: form hybrid laser-arc welding device by Fronius digitlization MIG welding machine and Panasonic's tig arc welding machine, MIG welding gun 1 is front, and TIG welding gun 3 is rear; Adopt diameter to be 1.2mmTC4 welding wire 2, select TC4 titanium alloy to be substrate 8.Its concrete steps are as follows:
(1) at substrate starting the arc position pre-aeration 5s, first start MIG weldering, restart TIG weldering, treat 1-2s, after arc stability, carry out ground floor first built-up welding welding.
(2) after first built-up welding terminates, compound welding gun is rotated 180 °, then by its sidesway 1.5mm, be reversed ground floor second built-up welding welding, between weld seam, overlap 1mm; Repetition like this, then complete all the other 11 road built-up welding welding, then carry out receipts arc; After receiving arc, continue the 4s that supplies gas.
(3) compound welding gun is improved 1.5mm, move to ground floor starting the arc position, carry out second layer first built-up welding welding after the starting the arc, built-up welding is welded.
(4) after the built-up welding of second layer first completes, compound welding gun is rotated 180 °, then by its sidesway 1.5mm, be reversed second layer second built-up welding welding, between weld seam, overlap 1mm; Repetition like this, then complete all the other 11 road built-up welding welding, then carry out receipts arc; After receiving arc, continue the 4s that supplies gas.
(5) repeat step (2)-(4), until complete the built-up welding welding of all the other layers, form titanium alloy shape part.
Above-mentioned steps; weld procedure specification parameter is: MIG welding gun and base plan angle are 75 °, and TIG welding gun and base plan angle are 60 °, and tungsten electrode end is 6mm to welding wire vertical range; MIG welding current is 190A; TIG welding current is 140A, and be namely 330A by the total current of welding wire, wire feed rate is 6.7m/min; speed of welding is 1.2m/min; MIG weldering shield gas flow rate is 20L/min, TIG weldering shield gas flow rate is 15L/min, and protective gas drags cover gas flow to be 20L/min.
Embodiment 2
As shown in Fig. 2 (a) He (b), the high H of titanium alloy shape part 9 is 100mm, and width W is 15mm, is formed by 100 layers of overlay cladding, every layer of built-up welding floor height 1.0mm, and the built-up welding of Mei Ceng 10 road is welded.Welding procedure platform: form hybrid laser-arc welding device by Fronius digitlization MIG welding machine and Panasonic's tig arc welding machine, MIG welding gun 1 is front, and TIG welding gun 3 is rear; Adopt diameter to be 1.2mmTC1 welding wire 2, select TC1 titanium alloy to be substrate 8.Its concrete steps are as follows:
(1) at substrate 8 starting the arc position pre-aeration 5s, start MIG weldering, restart TIG weldering, treat 1-2s, after arc stability, carry out ground floor first built-up welding welding.
(2) after first built-up welding terminates, compound welding gun is rotated 180 °, then by its sidesway 1.5mm, be reversed ground floor second built-up welding welding, between weld seam, overlap 1mm; Repetition like this, then complete all the other 8 road built-up welding welding, then carry out receipts arc; After receiving arc, continue the 4s that supplies gas.
(3) welding gun is improved 1.2mm, move to ground floor starting the arc position, carry out second layer first built-up welding welding after the starting the arc, built-up welding is welded.
(4) after the built-up welding of second layer first completes, welding gun is rotated 180 °, then by its sidesway 1.5mm, be reversed second layer second built-up welding welding, between weld seam, overlap 1mm; Repetition like this, then complete all the other 8 road built-up welding welding, then carry out receipts arc; After receiving arc, continue the 4s that supplies gas.
(5) repeat step (2)-(4), until complete the built-up welding welding of all the other layers, form titanium alloy shape part 9.
Above-mentioned steps; the process specification parameters of welding is: the angle between the plane of MIG welding gun 1 and substrate 8 is 75 °; angle between TIG welding gun 3 and substrate 8 plane is 60 °; tungsten electrode end is 6mm to welding wire vertical range; MIG welding current 180A; it is 120A that TIG welds welding current; namely be 300A by the total current of welding wire; wire feed rate is 6.3m/min; speed of welding is 1.2m/min; MIG weldering shield gas flow rate is 16L/min, TIG weldering shield gas flow rate is 12L/min, and protective gas drags cover gas flow to be 18L/min.
Embodiment 3
As shown in Fig. 3 (a) He (b), titanium alloy shape part 9 is highly 250mm, and internal diameter and external diameter are respectively 200mm and 260mm, is formed by 100 layers of overlay cladding, every layer of built-up welding floor height 2.5mm, and the built-up welding of Mei Ceng 15 road is welded.Welding procedure platform: form hybrid laser-arc welding device by Fronius digitlization MIG welding machine and Panasonic's tig arc welding machine, MIG welding gun 1 is front, and TIG welding gun 3 is rear; Adopt diameter to be 1.6mmTC4 welding wire 2, select TC4 titanium alloy to be substrate 8; In welding process, substrate is fixed on positioner, and only positioner rotates, and welding gun maintains static, and only makes sidesway.Its concrete steps are as follows:
(1) at substrate 8 starting the arc position pre-aeration 6s, first start MIG weldering, restart TIG weldering, treat 1-2s, after arc stability, positioner rotates counterclockwise, and carries out the clockwise built-up welding welding of ground floor first.
(2) first built-up welding terminates, and positioner does not stop, and continues to rotate counterclockwise, compound welding gun moves 2.5mm laterally, carries out ground floor second built-up welding welding clockwise, overlaps 2mm between weld seam, repetition like this, then complete all the other 13 road built-up welding welding, then carry out receipts arc; Continue the 4s that supplies gas after receiving arc, then stop supplying gas.Compared to patent " a kind of arc additive of titanium alloy structural part manufacture method ", in thermal source traveling process of the present invention, positioner does not stop and reversing, and not only increases working (machining) efficiency, also make shape part be heated more even, thus improve shape part quality stability further.
(3) compound welding gun is improved 2.5mm, move to ground floor first arcing point, positioner is rotated counterclockwise 40 °, then with reference to step (1), carry out second layer first built-up welding welding, namely different layers starting the arc position is different, and both differ 40-60 °.
(4) complete second layer first heap postwelding, positioner does not stop, and continues to rotate counterclockwise, compound welding gun moves 2.5mm laterally, carries out second layer second built-up welding welding clockwise, overlaps 2mm between weld seam, repetition like this, then complete all the other 13 road built-up welding welding, then carry out receipts arc; Continue the 4s that supplies gas after receiving arc, then stop supplying gas.
(5) repeat step (3)-(4), until complete the built-up welding welding of all the other layers, form titanium alloy shape part 9.
In above-mentioned steps; weld procedure specification parameter is: MIG welding gun and base plan angle are 75 °, and TIG welding gun and base plan angle are 60 °, and tungsten electrode end is 6mm to welding wire vertical range; MIG welding current 220A; it is 180A that TIG welds welding current, and be namely 400A by the total current of welding wire, wire feed rate is 7.5m/min; speed of welding is 1.0m/min; MIG weldering shield gas flow rate is 20L/min, TIG weldering shield gas flow rate is 15L/min, and protective gas drags cover gas flow to be 20L/min.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. titanium alloy shape part twin arc composite heat power supply wire feed increases a material manufacture method, it is characterized in that: described titanium alloy shape part is superposed by some overlay claddings and makes, and its method comprises the following steps:
(1) MIG weldering is welded efficient coupling with TIG, MIG weldering positive source welds positive source with TIG and is connected, and both tie points are connected with MIG welding gun, and MIG welds power cathode and is connected with substrate, TIG welds power cathode and is connected with TIG welding gun, form the weldering of MIG+TIG composite heat power supply, i.e. compound welding gun, welding wire is sent by MIG welding gun, wherein, MIG welds power supply, welding wire, substrate composition major loop, and TIG welds power supply, welding wire, the bypass of TIG welding gun composition, for breaking up the electric current by welding wire;
(2) cover is dragged by protective gas to be placed in above substrate weld seam, and settle TIG welding gun and MIG welding gun successively forward in the one end along welding direction, wherein TIG welding gun barral of a gun tilts backwards, a β angle is formed with base plan, and drag cover to fix with protective gas, MIG welding gun barral of a gun turns forward, and forms a α angle with base plan; TIG welding gun tungsten electrode end is d to the vertical range of MIG welding gun welding wire;
(3) choose arcing point at substrate, first pre-logical protective gas 4-6s, then open the source of welding current, carry out ground floor built-up welding welding according to welding bead layout, per pass built-up welding floor height is 1-4mm, and layer is wide is 2-8mm; If layer is made up of multiple-pass weld, after completing front one weld seam, according to setting layout, carry out next road built-up welding by after compound welding gun sidesway 1-4mm, twice weld seam lap width is 1-4mm;
(4) after completing ground floor shape part, close the source of welding current and carry out receipts arc, and continue logical protective gas 3-6s; Compound welding gun is improved 1-3mm, is moved to precalculated position, then carry out second layer weld deposit process on the first layer;
(5) step 3 and step 4 is repeated, until complete the increasing material manufacture process of titanium alloy shape part;
(6) according to size and required precision, titanium alloy shape part is heat-treated and machining.
2. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method, it is characterized in that: the size at the α angle described in step (2) is 60-80 °, the size at described β angle is 40-60 °, and described tungsten electrode end is 5-10mm to welding wire vertical range d.
3. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method, it is characterized in that: the welding step described in step (3) first starts MIG weldering, restart TIG weldering, treat 1-2s, TIG welds between tungsten electrode and welding wire after arc stability, then moves by the speed of welding of setting.
4. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method, it is characterized in that: step (3) to the technological parameter of step (5) described welding is: MIG welding current is 100-250A, TIG welding current is 100-250A, namely be 200-500A by the total current of welding wire, speed of welding is 1-2m/min, and wire feed rate is 6-10m/min.
5. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method; it is characterized in that: the protective gas described in step (3) is high-purity pure argon, helium or both mists of 99.999%; it is 15-30L/min that MIG welds shield gas flow rate; it is 12-25L/min that TIG welds shield gas flow rate, and protective gas drags cover gas flow to be 20-40L/min.
6. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method, it is characterized in that: the material of the welding wire described in step (1) is any one in industrially pure titanium, TA7, TC1, TC4.
7. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method, it is characterized in that: the diameter of the welding wire described in step (1) is 1.0-1.6mm.
8. titanium alloy shape part twin arc composite heat power supply wire feed according to claim 1 increases material manufacture method, it is characterized in that: the material of the substrate described in step (3) is carbon steel or titanium alloy.
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| CN201610005235.9A Pending CN105458470A (en) | 2016-01-04 | 2016-01-04 | Material increase manufacturing method for titanium alloy shape part by using double-arc hybrid heat source |
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| US11213920B2 (en) | 2011-03-31 | 2022-01-04 | Norsk Titanium As | Method and arrangement for building metallic objects by solid freeform fabrication |
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| CN109262109B (en) * | 2018-11-22 | 2021-03-02 | 福州大学 | Feedback control device and method for TIG (tungsten inert gas) arc additive forming morphology |
| CN109262109A (en) * | 2018-11-22 | 2019-01-25 | 福州大学 | TIG electric arc increases the feed back control system and method for material forming pattern |
| CN109483114A (en) * | 2018-11-27 | 2019-03-19 | 河北创力机电科技有限公司 | A kind of cast tube build-up welding apparatus and method |
| CN109514037A (en) * | 2018-11-29 | 2019-03-26 | 河北科技大学 | Twin arc built-up welding dilution control device and method |
| CN109759707A (en) * | 2019-01-13 | 2019-05-17 | 大连理工大学 | A kind of aluminium alloy annular element laser tungsten inert- gas arc hybrid heat source increasing material manufacturing method |
| CN112139630A (en) * | 2019-06-28 | 2020-12-29 | 南京理工大学 | Method and device for electric arc additive manufacturing of consumable electrode with adjustable heat input |
| CN112139630B (en) * | 2019-06-28 | 2022-05-13 | 南京理工大学 | Method and device for electric arc additive manufacturing of consumable electrode with adjustable heat input |
| CN110539123A (en) * | 2019-08-14 | 2019-12-06 | 甘肃酒钢集团西部重工股份有限公司 | Open arc online surfacing repair device and method for medium-speed grinding disc |
| CN112621103A (en) * | 2020-12-17 | 2021-04-09 | 中国民航大学 | Repair method for titanium alloy blade of aircraft engine compressor |
| CN113927192A (en) * | 2021-10-29 | 2022-01-14 | 中国船舶重工集团公司第七二五研究所 | Welding method of large-size titanium alloy pipeline |
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| CN115255562A (en) * | 2022-08-17 | 2022-11-01 | 内蒙古第一机械集团股份有限公司 | Preparation method of titanium alloy wear-resistant coating |
| CN115255562B (en) * | 2022-08-17 | 2023-04-25 | 内蒙古第一机械集团股份有限公司 | Preparation method of titanium alloy wear-resistant coating |
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