CN106238876B - Non-close thin-walled workpiece GTAW double synchronous silk filling increasing material manufacturing method - Google Patents
Non-close thin-walled workpiece GTAW double synchronous silk filling increasing material manufacturing method Download PDFInfo
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- CN106238876B CN106238876B CN201610729202.9A CN201610729202A CN106238876B CN 106238876 B CN106238876 B CN 106238876B CN 201610729202 A CN201610729202 A CN 201610729202A CN 106238876 B CN106238876 B CN 106238876B
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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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
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Abstract
The present invention provides a kind of non-close thin-walled workpiece GTAW double synchronous silk filling increasing material manufacturing method, the non-close thin-walled workpiece is the disjunct multilayer single-pass configuration part of head and the tail, a wire feed system is symmetrically installed at left and right sides of GTAW welding gun respectively, when welding gun is moved along accumulation path direction, the same wire feed system is from welding gun rear end wire feed Shi Weihou wire feed system, from welding gun front end wire feed Shi Weiqian wire feed system, accumulation path direction between adjacent stack layer is opposite, in this way in different stack layers, before the wire feed system of the left and right sides acts alternately as respectively, wire feed system afterwards, before separately adjustable, the silk feeding quantity of wire feed system afterwards, preceding wire feed system is responsible for efficient fuse, a small amount of fuse is carried out by rear wire feed system simultaneously；The problem of wire feeding mode fuse low efficiency and forming quality difference after the present invention effectively overcomes in non-close structural member alternating expression banking process, effectively improves molten bath cooling rate, can refine crystal grain, improves formed parts mechanical property.
Description
Technical field
The invention belongs to increases material manufacturing technology fields, and in particular to a kind of non-close thin-walled workpiece GTAW double synchronous is filled out
Silk increasing material manufacturing method.
Background technique
It is well known that the forming of metal parts uses casting or Conventional machining methods substantially, but these methods can not
There are stock utilizations low, drip molding tissue and the poor mechanical property that avoids, a series of problems, such as manufacturing cost is high.In recent years,
Metal component increases material manufacturing technology is come into being, which is sliced the STL model layers of part, each by setting path formation
Synusia has the advantages such as stock utilization is high, manufacturing cost is low until producing entire metal component.
The heat source of metal component increasing material manufacturing has laser, electron beam, electric arc.Wherein, it is set using electric arc as heat source
Standby remarkable advantage at low cost, and electric arc heat source, generally with the system matches that fill silk, arcing fills silk increasing material manufacturing system.Gold
In metal elements forming process, metal wire material can be completely fed to molten bath and melt.Therefore, add powder increases material manufacturing technology ratio with laser
Compared with electric arc fills silk, and increasing material manufacturing stock utilization is high, pollutes less, forming efficiency height.
The electric arc silk filling common heat source of increasing material manufacturing has GMAW and GTAW.Although with GMAW as heat source with very high
Forming efficiency, but its heat input is big, it is more to splash, it is big to the damage of stack layer, cause form metal component organizational coarseness.Compare it
Under, GTAW heat source arc stability, forming accuracy are high, it is few to splash.Therefore, GTAW increasing material manufacturing is suitable for high-precision metal component
Direct manufacture.Currently, GTAW fills silk, increasing material manufacturing system uses single paraxonic wire feed substantially.To obtain preferable forming quality
With forming efficiency, preceding wire feeding mode is generally taken, i.e., along accumulation path direction, wire feed system is mounted in front of GTAW welding gun, silk
Material is sent directly into electric arc.Wire feeding mode refers to that, along accumulation path direction, wire feed system is mounted on GTAW welding gun rear, silk material afterwards
It is sent directly into molten bath, wire feed rate is extremely restricted.
In the increasing material manufacturing of non-close structural member, if accumulated in the same direction always, ruler of the formed parts at both ends
Very little difference can be gradually increased, and cause forming process that can not continue.If using alternating expression accumulation mode, i.e., adjacent interlayer
Stacked direction is on the contrary, rear wire feeding mode is because silk material is sent into molten bath, and wire feed rate is limited, it is difficult to efficient fuse.Currently, GTAW is filled out
Silk increasing material manufacturing is mainly used for shaped closure structural member, upper there is not yet feasible in the forming quality control of non-close path structure part
Solution.Fill silk increasing material manufacturing method therefore, it is necessary to explore a kind of novel GTAW, thus solve non-close structural member at
Shape control problem improves its packing efficiency and is advantageously implemented the automation of forming process.
Summary of the invention
In view of the foregoing deficiencies of prior art, it is an object of the invention to solve non-close structural member on alternating expression road
Diameter is difficult to the problem of efficient fuse when shaping, improve the mechanical property of stack layer.
For achieving the above object, technical solution of the present invention is as follows:
A kind of non-close thin-walled workpiece GTAW double synchronous silk filling increasing material manufacturing method, respectively in GTAW welding gun or so two
Side is symmetrically installed a set of wire feed system, and when welding gun is moved along accumulation path direction, the same wire feed system is sent from welding gun rear end
Silk Shi Weihou wire feed system, from the accumulation path direction between welding gun front end wire feed Shi Weiqian wire feed system, adjacent stack layer
Be it is opposite, in this way in different stack layers, the wire feed system of the left and right sides acts alternately as forward and backward wire feed system respectively, independent
The silk feeding quantity of forward and backward wire feed system is adjusted, preceding wire feed system is responsible for efficient fuse, while being melted on a small quantity by rear wire feed system
Silk.
Specifically, such as: accumulation path setting is the wire feed system on the left of GTAW welding gun when accumulating from left to right
The wire feed system that be from the wire feed system on the right side of welding gun rear end wire feed, welding gun be from welding gun front end wire feed, therefore on the left of welding gun
System is rear wire feed system, and the wire feed system on the right side of welding gun is preceding wire feed system；When carrying out next layer of forming, due to using friendship
Wrong formula accumulates path, and it is opposite for accumulating path direction with preceding layer, therefore welding gun is moved left from the right side is past, on the left of welding gun
It is from welding gun rear end wire feed, therefore welding gun left side that wire feed system, which is from the wire feed system on the right side of welding gun front end wire feed, welding gun,
Wire feed system be preceding wire feed system, the wire feed system on the right side of welding gun is rear wire feed system.
In this way, in the alternating expression path formation of non-close structural member, the wire feed system of side is preceding wire feed
System, the wire feed system of the other side function simultaneously as rear wire feed system and carry out a small amount of fuse, and forward and backward wire feed system is simultaneously operable,
Fuse efficiency is improved, the cooling rate in molten bath is increased by a small amount of fuse of rear wire feed system, reduces bath temperature, is refined
Crystal grain improves the mechanical property for improving stack layer.
It is preferred that the manufacturing method further includes steps of
Step 1: two sets of copper alloy wire leading pipes are separately mounted on GTAW welding gun, the angle between wire leading pipe and welding gun
It is 35 ° -65 °；GTAW increasing material manufacturing is multilayer banking process, and every one layer of accumulation, GTAW welding gun promotes a given layer along short transverse
Height, but the height of practical stack layer and the GTAW welding gun height promoted are not necessarily equal, therefore on GTAW welding gun to stack layer
The distance on surface is dynamic change, i.e., GTAW electric arc arc length is also fluctuating.If the angle between wire leading pipe and GTAW welding gun
Excessive, then in preceding wire feed system, silk material fusing is larger by the interference of electric arc arc length, from the position that arc space volume passes through and length
Degree fluctuation is larger, and banking process forming quality is poor, and equally in rear wire feed system, silk material is also difficult to accurately be sent into molten bath
Portion.If the angle between wire leading pipe and GTAW welding gun is too small, in forward and backward wire feed system, wire feed process cannot be played very well
Buffer function, easily occur tied silk when wire feed rate is larger, silk material burn-off rate is limited.Therefore by angle be set as 35 °-
65°。
Step 2: carrying out grinding process to substrate surface before accumulation, substrate surface greasy dirt is then removed, after cleaning
Substrate is fixed on increasing material manufacturing frock clamp；GTAW welding gun is moved to above substrate, makes tungsten electrode threshold value substrate surface
2-6mm, and determine accumulation arcing point；Being set as 2-6mm is because tungsten electrode end directly determines electric arc to the distance of substrate surface
Arc length, if the distance of tungsten electrode end to substrate surface is too small, GTAW arc length is too short, is unfavorable for wire feed system fuse；If
The distance of tungsten electrode end to substrate surface is excessive, then GTAW arc length is too long, and arc stability is deteriorated, and silk material fusing, which is presented, dripped greatly
It crosses, is unable to get preferable forming.In order to control forming quality, the distance of tungsten electrode end to substrate surface is 2- in the present invention
6mm。
Step 3: setting accumulation path direction, the high frequency starting the arc are ignited electric arc, and wire feed system before starting, silk material is sent directly into
In electric arc, wire feed system, silk material are directly sent after starting after GTAW welding gun walks a distance 8-15mm along accumulation path direction
Enter molten bath head, after the forming of first layer to be done, simultaneously close off forward and backward wire feed system, GTAW welding gun is then improved one
Layer is high；Set distance 8-15mm, if GTAW welding gun travel distance is too short, cannot be formed because silk material must be sent into molten bath
Stable molten bath, travel distance is too long, and wire feed system starts fuse after cannot guaranteeing in time.
Step 4: accumulating path using alternating expression between adjacent layer, and wire feed system before starting, silk material is sent directly into electric arc
In, after GTAW welding gun walks a distance 8-15mm along accumulation path direction, wire feed system after starting, silk material is sent directly into molten
Pond head；After the forming of the second layer to be done, GTAW welding gun is improved into a layer height；
Step 5: continue to repeat step 3 and step 4, complete the forming of several layers, the ruler until reaching whole knot component
Until very little requirement.
It is preferred that the wire feed rate of preceding wire feed system is 1-3.2m/min in step 3, rear side wire feed system
Wire feed rate is 0.2-0.8m/min.Preceding wire feed system is responsible for efficient fuse in step 3, and wire feed rate is too small to will affect forming
Efficiency, wire feed rate is excessive, and is difficult to fuse and tied silk phenomenon occur.Wire feed system wire feed rate is too small afterwards, cannot play drop
The effect of eutectic pond cooling rate, wire feed rate are excessive, it may appear that molten bath tied silk phenomenon, therefore set wire feed rate as above.
It is preferred that the wire feed rate of wire feed system is 0.2-0.8m/min after in step 4, preceding wire feed system
Wire feed rate is 1-3.2m/min.
It is preferred that in step 3 and step 4, after completing each layer of forming, arc extinction.
It is preferred that silk material is dissimilar metal silk material in wire feed system at left and right sides of GTAW, it can be titanium alloy, carbon
One or both of steel, stainless steel, aluminium alloy, nickel base superalloy.
It is preferred that accumulation path is any non-close curve.
The present invention can be adjusted independently in alternating expression accumulation path by installing two sets of wire feed systems in GTAW welding gun two sides
The silk feeding quantity for saving forward and backward wire feed system efficiently solves non-close structural member and is difficult to efficient fuse in alternating expression path formation
Problem, improve stack shaping quality.
Compared with the single paraxonic wire feed increases material manufacturing technology of common GTAW, the invention has the following advantages that
(1) the method for the present invention effectively overcomes the accumulation of non-close structural member alternating expression using double paraxonic synchronous wire feed systems
The problem of wire feeding mode fuse low efficiency and forming quality difference after in the process.
(2) the method for the present invention is during non-close metal component increasing material manufacturing, and when using preceding wire feeding mode, silk material is sent into
Electric arc is to improve fuse efficiency.Wire feed system after matching simultaneously, silk material is effectively to mention in lower wire feed rate filling molten bath
High molten bath cooling rate, can refine crystal grain, improve formed parts mechanical property.
(3) the method for the present invention can two sets of wire feed systems of flexible choice silk material material, carry out dissimilar metal component increasing material
Manufacture.
(4) the method for the present invention operating process is simple, increases fuse efficiency, can shorten metal component increasing material manufacturing week
Phase, while improving the degree of automation of increasing material manufacturing process.
Detailed description of the invention
The dual silk filling increasing material manufacturing method schematic diagram of Fig. 1 non-close thin-walled workpiece GTAW.
1 is substrate, and 2 be GTAW welding gun, and 3 straight wall structural members, 4 and 5 be wire leading pipe.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Embodiment 1
Embodiment is described with reference to Fig. 1, and a kind of non-close thin-walled workpiece GTAW described in present embodiment is dual same
Step silk filling increasing material manufacturing method, the non-close thin-walled workpiece are the disjunct multilayer single-pass configuration part of head and the tail, the side
Method through the following steps that realize:
Step 1: copper alloy wire leading pipe 5,4 is respectively symmetrically mounted on 2 left and right sides of GTAW welding gun, wire leading pipe and welding gun
Between angle β be 35 °.
Step 2: carrying out grinding process to 1 surface of substrate before accumulation, then removes 1 surface and oil contaminant of substrate with acetone, will
Substrate 1 after cleaning is fixed on increasing material manufacturing frock clamp.GTAW welding gun 2 is moved to above substrate, make tungsten electrode end away from
At substrate surface 2mm, and determine accumulation arcing point.The manually opened source of welding current protects gas.
Step 3: accumulation path is straight line, and it is from right to left that first layer, which accumulates path direction,.The high frequency starting the arc is ignited electric arc,
Starting 2 left side wire feed system of GTAW welding gun, silk material, which is directly sent into electric arc from wire leading pipe 5, to melt, wire feed rate 1m/min, when
GTAW welding gun 2 is walked along accumulation path direction after a distance 8mm, starts 2 right side wire feed system of GTAW welding gun, silk material is through seal wire
Pipe 4 is sent directly into molten bath head, wire feed rate 0.2m/min.After the forming of first layer to be done, arc extinction simultaneously closes off two
Wire feed system is covered, silk material stops wire feed, and GTAW welding gun 2 is then improved a layer height.
Step 4: path is accumulated using alternating expression between adjacent layer.The high frequency starting the arc is ignited electric arc, and starting GTAW welding gun 2 is right
Side wire feed system, silk material are sent directly into electric arc through wire leading pipe 4, wire feed rate 0.2m/min, to GTAW welding gun 2 along accumulation path
Direction is walked after a distance 8mm, starts to start wire feed system on the left of welding gun, and silk material is sent directly into molten bath head through wire leading pipe 5,
Wire feed rate 1m/min.After the forming of the second layer to be done, arc extinction simultaneously closes off two sets of wire feed systems, and silk material stopping is sent
Then GTAW welding gun 2 is improved a layer height by silk.
Step 5: continue to repeat step 3 and step 4, complete the forming of several layers, the ruler until reaching whole knot component
Until very little requirement.
The two sets of wire feed systems into step 5 of above-mentioned steps one are driven by two sets of wire welding powers respectively, and GTAW power supply is
Fronius MagicWave 3000, GTAW welding gun 2 is mounted on the 6th shaft end of MOTOMAN robot, and robot drives
The movement of GTAW welding gun.It is carbon steel welding wire, technological parameter that banking process, which fills silk material material, are as follows: average current 120A, accumulation speed
2mm/s is spent, protection gas is straight argon, gas flow 10L/min, gage of wire 1.2mm.
Embodiment 2
Embodiment is described with reference to Fig. 1, and a kind of non-close thin-walled workpiece GTAW is dual described in present embodiment fills out
Silk increasing material manufacturing method, the non-close thin-walled workpiece are the disjunct multilayer single-pass configuration part of head and the tail, and the method is
It is realized by following steps:
Step 1: being respectively symmetrically mounted on the left and right sides of GTAW welding gun 2 for copper alloy alloy guidewire pipe 5,4, wire leading pipe with
Angle β between welding gun is 65 °.
Step 2: carrying out grinding process to 1 surface of substrate before accumulation, then removes 1 surface and oil contaminant of substrate with acetone, will
Substrate 1 after cleaning is fixed on increasing material manufacturing frock clamp.GTAW welding gun 2 is moved to above substrate, make tungsten electrode end away from
At substrate surface 6mm, and determine accumulation arcing point.The manually opened source of welding current protects gas.
Step 3: accumulation path is straight line, and it is from right to left that first layer, which accumulates path direction,.The high frequency starting the arc is ignited electric arc,
Starting 2 left side wire feed system of GTAW welding gun, silk material, which is directly sent into electric arc from wire leading pipe 5, to melt, wire feed rate 3.2m/min, when
GTAW welding gun 2 is walked along accumulation path direction after a distance 15mm, starts 2 right side wire feed system of GTAW welding gun, silk material is through leading
Fiber tube 4 is sent directly into molten bath head, wire feed rate 0.8m/min.After the forming of first layer to be done, GTAW welding gun 2 is improved one
A layer of height.
Step 4: path is accumulated using alternating expression between adjacent layer.The high frequency starting the arc is ignited electric arc, and starting GTAW welding gun 2 is right
Side wire feed system, silk material are sent directly into electric arc through wire leading pipe 4, wire feed rate 0.8m/min, to GTAW welding gun 2 along accumulation path
Direction is walked after a distance 15mm, starts to start wire feed system on the left of welding gun, silk material is sent directly into molten bath head through wire leading pipe 5
Portion, wire feed rate 3.2m/min.After the forming of the second layer to be done, GTAW welding gun 2 is improved into a layer height.
Step 5: continue to repeat step 3 and step 4, complete the forming of several layers, the ruler until reaching whole knot component
Until very little requirement.
The two sets of wire feed systems into step 5 of above-mentioned steps one are driven by two sets of wire welding powers respectively, and GTAW power supply is
Fronius MagicWave 3000, GTAW welding gun 2 is mounted on the 6th shaft end of MOTOMAN robot, and robot drives
The movement of GTAW welding gun.Banking process technological parameter are as follows: average current 280A, stackeding speed 4mm/s, protection gas are straight argon, gas
Body flow 10L/min, gage of wire 1.2mm.
Embodiment 3
Embodiment is described with reference to Fig. 1, and a kind of non-close thin-walled workpiece GTAW is dual described in present embodiment fills out
Silk increasing material manufacturing method, the non-close thin-walled workpiece are the disjunct multilayer single-pass configuration part of head and the tail, and the method is
It is realized by following steps:
Step 1: being respectively symmetrically mounted on the left and right sides of GTAW welding gun 2 for copper alloy alloy guidewire pipe 5,4, wire leading pipe with
Angle β between welding gun is 50 °.
Step 2: carrying out grinding process to 1 surface of substrate before accumulation, then removes 1 surface and oil contaminant of substrate with acetone, will
Substrate 1 after cleaning is fixed on increasing material manufacturing frock clamp.GTAW welding gun 2 is moved to above substrate, make tungsten electrode end away from
At substrate surface 6mm, and determine accumulation arcing point.The manually opened source of welding current protects gas.
Step 3: accumulation path is straight line, and it is from right to left that first layer, which accumulates path direction,.The high frequency starting the arc is ignited electric arc,
Starting 2 left side wire feed system of GTAW welding gun, silk material, which is directly sent into electric arc from wire leading pipe 5, to melt, wire feed rate 2.1m/min, when
GTAW welding gun 2 starts 2 right side wire feed system of GTAW welding gun, silk material is direct through wire leading pipe 4 after accumulation path direction walking 12mm
It is sent into bath, wire feed rate 0.5m/min.After the forming of first layer to be done, arc extinction simultaneously closes off two sets of wire feeds
System, silk material stop wire feed, and GTAW welding gun 2 is then improved a layer height.
Step 4: path is accumulated using alternating expression between adjacent layer.The high frequency starting the arc is ignited electric arc, and starting GTAW welding gun 2 is right
Side wire feed system, silk material are sent directly into electric arc through wire leading pipe 4, wire feed rate 0.5m/min, to GTAW welding gun 2 along accumulation path
Direction is walked after 12mm, starts to start wire feed system on the left of welding gun, silk material is sent directly into molten bath through wire leading pipe 5, wire feed rate
2.1m/min.After the forming of the second layer to be done, arc extinction simultaneously closes off two sets of wire feed systems, and silk material stops wire feed, then
GTAW welding gun 2 is improved into a layer height.
Step 5: continue to repeat step 3 and step 4, complete the forming of several layers, the ruler until reaching whole knot component
Until very little requirement.
The two sets of wire feed systems into step 5 of above-mentioned steps one are driven by two sets of wire welding powers respectively, and GTAW power supply is
Fronius MagicWave 3000, GTAW welding gun 2 is mounted on the 6th shaft end of MOTOMAN robot, and robot drives
The movement of GTAW welding gun.Banking process technological parameter are as follows: average current 200A, stackeding speed 3mm/s, protection gas are straight argon, gas
Body flow 10L/min, gage of wire 1.2mm.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, all those of ordinary skill in the art are completed without departing from the spirit and technical ideas disclosed in the present invention
All equivalent modifications or change, should be covered by the claims of the present invention.
Claims (6)
- A kind of increasing material manufacturing method 1. non-close thin-walled workpiece GTAW double synchronous fills silk, the non-close thin-walled workpiece For the disjunct multilayer single-pass configuration part of head and the tail, it is characterised in that: be symmetrically installed a set of send at left and right sides of GTAW welding gun respectively Silk system, welding gun along accumulation path direction move when, the same wire feed system from welding gun rear end wire feed Shi Weihou wire feed system, Be from the accumulation path direction between welding gun front end wire feed Shi Weiqian wire feed system, adjacent stack layer it is opposite, in this way not Same stack layer, the wire feed system of the left and right sides act alternately as forward and backward wire feed system, separately adjustable forward and backward wire feed system respectively Silk feeding quantity, preceding wire feed system is responsible for efficient fuse, while passing through rear wire feed system and carrying out a small amount of fuse；The manufacturing method specifically includes the following steps:Step 1: two sets of copper alloy wire leading pipes are separately mounted on GTAW welding gun, and the angle between wire leading pipe and welding gun is 35°-65°；Step 2: carrying out grinding process to substrate surface before accumulation, substrate surface greasy dirt is then removed, by the substrate after cleaning Electric arc is fixed on to fill silk on increasing material manufacturing frock clamp；GTAW welding gun is moved to above substrate, makes tungsten electrode threshold value substrate Surface 2-6mm, and determine accumulation arcing point；Step 3: setting accumulation path direction, the high frequency starting the arc are ignited electric arc, and wire feed system before starting, silk material is sent directly into electric arc In, after GTAW welding gun walks a distance 8-15mm along accumulation path direction, wire feed system after starting, silk material is sent directly into molten Pond head after the forming of first layer to be done, simultaneously closes off forward and backward wire feed system, and GTAW welding gun is then improved a layer height；Step 4: accumulating path using alternating expression between adjacent layer, and wire feed system before starting, silk material is sent directly into electric arc, to GTAW welding gun is walked along accumulation path direction after a distance 8-15mm, and wire feed system after starting, silk material is sent directly into molten bath head Portion；After the forming of the second layer to be done, GTAW welding gun is improved into a layer height；Step 5: continue to repeat step 3 and step 4, complete the forming of several layers, the size until reaching whole knot component is wanted Until asking.
- The increasing material manufacturing method 2. non-close thin-walled workpiece GTAW double synchronous according to claim 1 fills silk, feature Be: the wire feed rate of preceding wire feed system is 1-3.2m/min in step 3, and the wire feed rate of rear wire feed system is 0.2-0.8m/ min。
- The increasing material manufacturing method 3. non-close thin-walled workpiece GTAW double synchronous according to claim 1 fills silk, feature Be: the wire feed rate of wire feed system is 0.2-0.8m/min after in step 4, and the wire feed rate of preceding wire feed system is 1-3.2m/ min。
- The increasing material manufacturing method 4. non-close thin-walled workpiece GTAW double synchronous according to claim 1 fills silk, feature It is: in step 3 and step 4, after completing each layer of forming, arc extinction.
- The increasing material manufacturing method 5. non-close thin-walled workpiece GTAW double synchronous according to claim 1 fills silk, feature Be: silk material is dissimilar metal material in the forward and backward wire feed system of GTAW, is titanium alloy, carbon steel, stainless steel, aluminium alloy, Ni-based height One or both of temperature alloy.
- The increasing material manufacturing method 6. a kind of non-close thin-walled workpiece GTAW double synchronous according to claim 1 fills silk, Be characterized in that: accumulation path is any non-close curve.
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