CN109759680A - The welder of consumable electrode gas-arc and welding method for metallization - Google Patents
The welder of consumable electrode gas-arc and welding method for metallization Download PDFInfo
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- CN109759680A CN109759680A CN201811611269.8A CN201811611269A CN109759680A CN 109759680 A CN109759680 A CN 109759680A CN 201811611269 A CN201811611269 A CN 201811611269A CN 109759680 A CN109759680 A CN 109759680A
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Abstract
The invention discloses a kind of welder of consumable electrode gas-arc and for the welding method of metallization, which includes: the first pipeline of the first gas for input offset electric arc surrounding atmosphere environment；For inputting the second pipeline of the second gas in protection molten bath；And; protect shade assembly, it includes with inlet and outlet protection over body case, the partition that separates of over body case will be protected, which is separated out the first cavity, the second cavity for protection over body case; first cavity is for inputting first gas, and second cavity is for inputting second gas.Welder and technique of the invention by around electric arc top be passed through first gas protection and be passed through above molten bath second gas protection; speed of welding may be up to 1.4m/min-1.8m/min; welding productivity is improved, and preferably inhibits metallization welding point stomata, spattering problem；And compared with conventional laser welding procedure, ordinary carbon steel welding wire can be used and normal pulsed welding equipment, cost are greatly reduced.
Description
Technical field
The present invention relates to a kind of welder and techniques, and in particular to a kind of welder of consumable electrode gas-arc and
For the welding method of metallization, it is mainly used for automobile industry to improve the welding quality of galvanized sheet high-speed welding.
Background technique
Currently, how mitigating vehicle weight, how improving automobile long term quality is always auto industry urgently to be solved two
Big challenge.In order to overcome above-mentioned challenge, car manufactures pursue always the galvanized steel plain sheet that intensity is higher, thinner.
However, galvanized sheet has poor weldability.Due to metallic zinc boiling point about at 906 DEG C and the fusing point of steel is big
About at 1500 DEG C.When welding, the welding temperature of steel is steamed considerably beyond the boiling point of zinc so that a large amount of high-pressure metal zinc will be generated
Gas.If these metal vapors cannot correctly be discharged, these steams, which will remain in weld metal, causes stomata etc. to weld
Defect.The welding defect will reduce the mechanical performance of welding line joint.
Figure 1A -1C is for the common welding point of automobile manufacture: Figure 1A is banjo fixing butt jointing, and Figure 1B is T-type angle joint,
Fig. 1 C is lap joint.
For the banjo fixing butt jointing of Figure 1A, the base material test plate (panel) 6 on the left side and the base material test plate (panel) 7 on the right are all galvanized steel plain sheet.Work as weldering
When connecing galvanized steel plain sheet, the zinc coat 1 from test plate (panel) surface is evaporated and is discharged into air.The root area 3 of banjo fixing butt jointing 2 is very
Rare zinc coat, therefore the welding defects such as stomata are difficult to occur in banjo fixing butt jointing.
For the T-type fillet weld of Figure 1B, web 4 and wing plate 5 are zinc-plated test plate (panel).The part zinc coat packet of wing plate upper surface
It is contained in the root area 3 of T-type fillet weld 2.If root of joint clearance t is too small, zinc fume can not be completely discharged to outside, portion
Divide zinc fume that will be retained in inside weld seam 2, forms welding defect.
Compared with banjo fixing butt jointing and T-type angle joint, the weldability of galvanized sheet lap joint is poor.As shown in Fig. 1 C, overlap joint
Connector upper flange 8 and lower wing plate 9 are galvanized steel plain sheet.When welding, the metallic zinc of zinc coat 1 is evaporated and zinc fume will be from connector
Root area 3 is discharged and is fled from by molten bath to outside.It include two parts zinc coat 1 for lap joint root area 3.Point
Not Wei 8 lower surface of upper flange 9 upper surface of zinc coat and lower wing plate zinc coat.It would therefore be desirable to have more zinc fumes to pass through
Root area 3 is fled to outside.If root gap t is smaller, excessive zinc fume, which can not be escaped, will remain in the root of weld and is formed
Welding defect.
Therefore how to solve the problems, such as that the welding defect of galvanized steel sheet lap-over connector is always the challenge that auto industry faces.
In addition, with the reduction of lap joint root gap t, cavitations become readily apparent from for lap joint.
In fusing welding process method, gas metal-arc welding (Gas Metal Arc Welding, abbreviation GMAW),
Non-consumable gas shielded arc welding (Gas Tungsten Arc Welding, abbreviation GTAW), Laser Welding (Laser Beam
Welding, abbreviation LBW) it is the most commonly used and important method.Although these welding methods have its unique advantage and spy
Point, but gas metal-arc welding (under activity or inert gas shielding atmosphere, electric arc is resulted between welding wire and workpiece) is
For producing a kind of automobile component welding method the most common.Its advantage is efficient, flexible, at low cost and is easy to machine
Device people's automatic welding.
It is broadly divided into before using the method that gas metal-arc welding method is used to reduce galvanized sheet weld blowhole problem
It is several below:
1) before galvanized sheet welding, the zinc coat of welding region is machined or is polished off.But the method is used,
The welding productivity of automobile production enterprise will be reduced.
2) novel solder wire material is developed, the soldering of part is used for for example, by using copperwelding rod (Cu-Si etc.).Or reduce
The quantity of Si in welding wire, Mn element melts the viscosity of metal to reduce in weld seam, increase molten pool metal mobility, thus will
Zinc fume is set to be relatively easy to release from bath.However the change of novel welding wire will increase automobile production enterprise
Cost.In addition, limited to the generation ability for inhibiting gas hole defect using the method.
3) zinc generated between the upper and lower wing plate in galvanized sheet lap joint root is reduced by reducing thermal weld stress
Steam.For example, CMT (cold metal transfer welding technique, Cold Metal Transfer) welding method is a kind of using mechanical
Control welding wire advances or setback is to control the striking during short circuit current and continue.However, this method, welding
Speed is slower.In addition, it is only applicable to the special source of welding current since CMT is a kind of New type of current waveform.
It is a kind of for inhibiting the novel consumable electrode gas shielded welder of galvanized sheet weld blowhole defect therefore, it is necessary to research and develop
Skill creates a stable zinc fume escape route, so that zinc fume be accelerated to discharge below electric arc.
Solid core welding wire electrogas process for normal welding speed, the atmosphere of welding region are soldered protect completely
Shield gas is covered, and effect is exactly to prevent molten bath from aoxidizing and stablize electric arc and mode of metal transfer.However, when welding speed
When spending very fast, since the size of torch nozzle limits, the protective gas in torch nozzle cannot protect molten bath area completely
Domain.Therefore face of weld is relatively rough and aoxidizes.In addition, higher speed of welding is easily destroyed the atmosphere around electric arc, lead
Cause unstable electric arc or mode of metal transfer.It will be unable to form stable zinc fume escape route in this way.Finally, such as
The welding defects such as stomata, splashing are easily formed.
Welding for the metal material of other different melting points, there is also drawbacks described above.
Summary of the invention
The object of the present invention is to provide a kind of special gas protective device and the consumable electrode gas of metallization is combined to protect
The welding method of shield can greatly improve the welding speed of welding procedure for inhibiting galvanized sheet high-speed welding stomata or splashing
Degree and efficiency.
In order to achieve the above objectives, the present invention provides a kind of welder of consumable electrode gas-arc, welder peaces
On torch nozzle, torch nozzle output welding protection gas, which includes:
First pipeline of the first gas for input offset electric arc surrounding atmosphere environment；
For inputting the second pipeline of the second gas in protection molten bath；And
Shade assembly is protected, it includes the protection over body case with inlet and outlet, settings to be used to divide in protection over body case
Partition every space, the partition offer the notch for installing torch nozzle, partition and torch nozzle outer wall in protection housing
It is separated out the first cavity, the second cavity in vivo, first cavity is for inputting first gas, and second cavity is for inputting the
Two gases；Wherein, the import direction of the protection over body case is consistent with the gas input direction of the first pipeline, the second pipeline, the guarantor
The export direction of shield shell is consistent with the first pipeline, the gas outbound course of the second pipeline.
Preferably, the first gas and welding protection gas phase are same；The second gas is inert gas, including
The gaseous mixture of argon gas, helium and argon gas and helium.
Preferably, the lower edge of the partition is exported no more than torch nozzle.
Preferably, the first cavity exit end lower edge and the second cavity exit end lower edge height are inconsistent, it is specific next
It says, the first cavity exit end lower edge is lower than the second cavity exit end lower edge, and the first cavity exit end lower edge is closer to weldering
Part.
Preferably, the protection shade assembly also includes: for connecting the first pipeline connecting parts of the first pipeline, being used for
The second pipeline connecting parts of the second pipeline are connected, which is located in the first cavity, second pipeline connecting parts
In the second cavity.
Preferably, the protection shade assembly also includes: being located at the first cavity, the even gas distribution in the second cavity
Device, the even gas distribution device with the first pipeline, the second pipeline connection, respectively uniformly divide first gas, second gas respectively
Cloth, then exported through the first cavity exit end, the second cavity exit end.
Preferably, the even gas distribution device has dense porous structure.
Preferably, the even gas distribution device is the muffler with dense porous structure.
Preferably, the protection shade assembly also includes: be arranged in even gas distribution device export direction for further making
The copper plug net that gas is evenly distributed.
Preferably, the protection shade assembly also includes: the skirt at the first cavity exit end is arranged in, is connected to
On the protective cover housing exterior walls of one cavity, when use, contacts with weldment, as preposition protection.
Preferably, the skirt selects flexible high-temperature resistant adhesive tape, preferably Teflon glass fibre fire-proof high-temperature resistant glue
Band.
Due to one of the determinant that the levels of precision of protective gas ingredient is galvanized sheet High Speed Welding quality, the present invention is mentioned
The welder of the consumable electrode gas-arc of confession, the two-way auxiliary protection gas before and after setting on the basis of gas is protected in welding, first
Pipeline be welding direction preposition protection, join protection shade assembly (such as protect over body case the front part is long and the back is short, skirt), play anti-
Only air enters, and using gas componant identical with welding protection gas, plays the role of compensating electric arc surrounding atmosphere；Second
Pipeline is that the postposition of welding direction is protected, and gas componant is inert protective gas, and join protection shade assembly, playing prevents half to coagulate
The effect of the weld seam oxidation of solid fraction state.
Weldment device provided by the invention is particularly suitable for high-speed welding or external air flow disturbs larger situation, can be single
Solely, also in combination with improved welding procedure, welding is further increased to improve welding quality using (being used for existing welding procedure)
Quality.
The present invention also provides a kind of welding method of consumable electrode gas-arc for metallization, this method is adopted
Torch nozzle is connected with the above-mentioned gas metal-arc welding connection device for metallization, in the welding process,
First gas through the input of the first pipeline enters in the first cavity, then is ejected into around electric arc by the outlet of the first cavity
Side；Second gas through the input of the second pipeline enters in the second cavity, then is ejected on molten bath by the outlet of the second cavity
Side.
Preferably, the gas flow of the first gas is 15-25L/min, the gas flow of second gas is 10-
20L/min。
It is another object of the present invention to be used to inhibit the novel of galvanized sheet weld blowhole defect for welder of the invention
Gas metal-arc welding technique creates a stable zinc fume escape route below electric arc.Zinc fume passes through the channel
It can be relatively easy to be discharged into outside air, so as to inhibit the generation of gas hole defect.
In order to achieve the above object, the present invention provides a kind of welderings of consumable electrode gas-arc for metallization
Method is connect, torch nozzle is connected with above-mentioned welder, and in the welding process, the protective gas through the input of the first pipeline is logical
It crosses pipeline connecting parts to enter in the first cavity, then top around electric arc is ejected by the outlet of the first cavity；Through the second pipeline
The protective gas of input enters in the second cavity, then is ejected into above molten bath by the outlet of the second cavity；This method is using molten
Change pole gas shielded arc welding pulse mode, welding current uses impulse waveform, and electric current includes period adjustable peak point current and base value
Electric current, the peak point current are not less than 450A, and the peak point current duration is not higher than 2.1ms.
Preferably, the peak point current is 450-600A, the peak point current duration is 1.7-2.0ms.
Preferably, the peak point current is 500-560A.
Preferably, welding protection gas is argon gas-carbon dioxide mix gas, the titanium dioxide comprising 8-18% in this method
Carbon, remaining is argon gas.
Preferably, welding wire uses ordinary carbon steel solid core in this method.
Preferably, in this method, gage of wire 1.0mm-1.2mm.
Preferably, in this method, speed of welding 1.4m/min-1.8m/min.
Preferably, welding gun inclination alpha is 55 ° -65 °, which refers to axis and the weldering of torch nozzle in this method
Stitch the angle between vertical line.
Preferably, welding wire end midpoint and lap joint root distance are 1mm-2mm in this method.
Above-mentioned improved welding procedure can effectively inhibit the generation of metallization stomata, splashing, no matter and welding
Speed speed, welding point form and root gap, this method can be applicable in.
Welder provided by the invention and technique not only mitigate the weight of automobile and improve the long-term quality of automobile；With
Laser welding process is compared, and cost is also greatly reduced.Conventional fused pole gas shielded welding progress is welded for galvanized sheet, mainly
By improving welding material or welding equipment to improve galvanized sheet welding quality.And the present invention only needs to weld using ordinary carbon steel
Silk, such as ER70S-6 and normal pulsed welding equipment, so as to reduce cost.In addition, welding speed greatly improved in the present invention
Degree, improves welding productivity.Welder provided by the invention can be applied to the consumable electrode gas-arc of each metalloid
Weldering, the especially High Speed Welding of galvanized sheet.
Detailed description of the invention
Figure 1A is by weldering galvanized sheet banjo fixing butt jointing schematic diagram；
Figure 1B is by weldering galvanized sheet T-type angle joint schematic diagram；
Fig. 1 C is by weldering galvanized sheet lap joint schematic diagram；
Fig. 2 is a kind of structural representation of the welder of consumable electrode gas-arc for metallization of the invention
Figure；
Fig. 3 a is the cross section structure schematic diagram for protecting the protection shade assembly of welded seam area atmosphere；
Fig. 3 b is A for protecting the protection shade assembly of welded seam area atmosphere to side view；
Fig. 3 c is the B direction view (top view) for protecting the protection shade assembly of welded seam area atmosphere；
Fig. 4 is the schematic diagram for the copper plug net being evenly distributed for gas；
Fig. 5 is a kind of welding gun use state diagram of the invention；
Fig. 6 is the radiographic inspection photo in the embodiment of the present invention inside weld seam.
By description with reference to the accompanying drawing, the present invention and its purpose, advantage, feature and related fields will be by more clear
Understand to Chu.These attached drawings are usually schematically and for clarity, deliberately to contract by actual size equal proportion
Put drafting attached drawing, it is preferred that emphasis is show the gist of the present invention.All attached drawings share identical or corresponding feature identical attached
Icon note.
Specific embodiment
Below in conjunction with drawings and examples, the following further describes the technical solution of the present invention.
The direction of " import " of the present invention, " outlet " is consistent with first gas, the flow direction of second gas.Described
The one end for the gas outflow that " outlet end " refers to.
"lower" in " lower edge " of the present invention refers under use state, close to weldment orientation.
" weldment " of the present invention refers to the welding workpiece in welding process.
" period is adjustable " of the present invention refers to that the pulse period can be adjusted according to the needs.
" welding protection gas " of the present invention is gas industry noun, gas shielded arc welding due to good with welding quality,
It is high-efficient, it easily realizes the advantages that automation and is rapidly developed.Welding protective gas can be unitary gas, also there is binary,
Three-element mixed gas.Purpose using welding protection gas is to improve weldquality, stablizes electric arc, reduce weld seam heat effect band
Width avoids material from aoxidizing.Unitary gas has argon gas, carbon dioxide, and binary gas has argon and oxygen, argon and carbon dioxide, argon
And helium, argon and hydrogen gaseous mixture.Three-element mixed gas has helium, argon, carbon dioxide mix gas.It is different that the selection of wlding difference is regarded in
The mixed gas for welding of proportion.Welding protection gas is applied in welded joints by torch nozzle.
" weld seam " of the present invention refers to that the region of Melting And Solidification occurs for welding.
In welding gun front end, gas and export are protected in the welding for exporting welding gun for " torch nozzle " of the present invention setting
Welding wire.
As shown in Fig. 2, provided by the present invention for metallization consumable electrode gas-arc welder by two
It is grouped as: pipeline structure and protection shade assembly.The entrance of pipeline structure is connected with gas cylinder, the outlet of pipeline structure and protective cover
Component connection, protection shade assembly are mounted on torch nozzle 13.
The pipeline structure includes:
First pipeline 101 of the first gas for input offset electric arc surrounding atmosphere environment, first pipeline 101 is also
It is provided with first switch valve 102, first gas flow control valve 103；And
For inputting the second pipeline 201 of the second gas in protection molten bath；Second pipeline 201 is additionally provided with second and opens
Close valve 202, second gas flow control valve 203.
The first gas join protection shade assembly, as the preposition protection of welding direction, for compensated high-speed weldering electricity
Atmosphere around arc is so as to the stable burning of pilot arc and stable mode of metal transfer, gas flow 15-25L/
Min is controlled using first gas flow control valve 103.Argon-carbon dioxide mix gas, ingredient and weldering may be selected in first gas
The welding protection gas phase that rifle nozzle 13 comes out is same.
The second gas is that the postposition of welding direction is protected, and plays the work for preventing the weld seam of half curdled appearance from aoxidizing
With the weld seam molten bath zone 11 for preventing torch nozzle 13 from can not cover is oxidized, and gas flow 10-20L/min is adopted
It is controlled with second gas flow control valve 203.Second gas is inert gas, mixed including argon gas, helium and argon gas and helium
Gas is closed, 100% argon gas such as may be selected.
First pipeline, the second pipeline tracheae use teflon material.The metal slow for some cooling velocities, second
The postposition protection of pipeline can reversely lengthen in welding direction, that is, the second cavity exit end along welding direction reverse extending,
So that second gas covers greater area of molten bath.
As shown in Figure 3 a-3b, the protection shade assembly includes the protection over body case 301 with inlet and outlet, will protect
The partition 302 that shield shell separates, the partition will protect over body case 301 to be separated out the first cavity 303a, the second cavity 303b,
The first cavity 303a is for inputting first gas, and the second cavity 303b is for inputting second gas.The partition 302 is set
The purpose set is that the two kinds of protective gas (first gas, second gas) for preventing input from coming in mutually pollute.Protect over body case
301 are made of stainless steel material.
As shown in Figure 3c, the partition 302 offers the notch for installing torch nozzle, the bore of the notch with
The outer diameter of torch nozzle matches, and the first cavity 303a, the second cavity 303b are separated by partition and torch nozzle outer wall.It is some
In embodiment, the partition 302 is spaced two pieces, and the spacing of two pieces of partitions is matched with the outer diameter of torch nozzle, two
Block partition is arranged radially by torch nozzle.
In some preferably embodiments, the protection shade assembly also includes: being located at the first cavity 303a, second
Even gas distribution device 304 in cavity 303b passes through the even gas distribution device 304 respectively with the first pipeline, the second pipeline connection
First gas, second gas can be mixed respectively, so that first gas, second gas are evenly distributed.The even gas distribution device
304 have dense porous structure.In some preferred embodiments, the selection of even gas distribution device 304 has dense porous structure
Muffler.
As shown in figure 4, the protection shade assembly also includes in some preferably embodiments: being arranged in even gas distribution device
The copper plug net 305 for further making gas be evenly distributed of 304 export directions, to optimize gas shield effect.Moreover, should
Copper plug net 305 can also prevent solder sputter from polluting and be conveniently replaceable.
Since the levels of precision of protective gas ingredient determines the quality of galvanized sheet High Speed Welding quality.To prevent external gas
Atmosphere around body intrusion or destruction electric arc, the protection shade assembly also includes: setting goes out in the first cavity 303a
The skirt 306 at mouthful end, is connected on the protective cover housing exterior walls of the first cavity 303a, and when use contacts with weldment, as preceding
Protection is set, as shown in Figure 3a.The skirt 306 is flexible high-temperature resistant material, selects Teflon glass fibre fire-proof high-temperature resistant
Adhesive tape is sticked to the first cavity lower edge on protection over body case 301.
In some preferably embodiments, the protection shade assembly also includes: for connecting the first of the first pipeline 101
Pipeline connecting parts (not shown), the second pipeline connecting parts (not shown) for connecting the second pipeline 201, this
One pipeline, 101 connector is located in the first cavity 303a, which is located in the second cavity 303b.
A kind of welding method provided by the invention uses gas metal-arc welding pulse mode, and welding current uses arteries and veins
Waveform is rushed, electric current includes period adjustable peak point current and background current, and the peak point current is not less than 450A, preferably
450-600A；The peak point current duration is not higher than 2.1ms, preferably 1.7-2.0ms.In welding process, it is ensured that one pulse-one droplet,
That is, a pulse period, one molten drop of transition.Welding protects gas for argon gas-carbon dioxide mix gas, and two comprising 8-18%
Carbonoxide, remaining is argon gas.Welding wire use ordinary carbon steel solid core, gage of wire 1.0mm-1.2mm, welding wire end midpoint with
Lap joint root distance is 1mm-2mm.Speed of welding is 1.4m/min-1.8m/min.Welding gun inclination alpha is 55 °~65 °.
Embodiment
After torch nozzle is connect with welder of the invention, that is, torch nozzle is fixed in protection over body case
On partition notch, lap joint is welded.According to Fig.5, it is equipped with ignition tip 21 on the welding wire 12, it is conductive
Mouth is located in torch nozzle 13, and welding wire 12 is extend out to outside torch nozzle 13.Between the axis and weld seam vertical line of torch nozzle 13
Angle be welding gun inclination angle 22.Welding wire length is stem elongation 25 between 12 end of end and welding wire of ignition tip 21, that is, is stretched out in
The length of welding wire except ignition tip 21.The welding wire midpoint of welding wire end at a distance from lap joint root 24 as shown in Figure 5.
Lap joint upper flange 8, lower wing plate 9 plate thickness be 1.4mm.Upper and lower wing plate overlap joint contact, gap is no more than 0.5mm.It should
Gap is measured by clearance gauge.Galvanized layer thickness is 10um on galvanized sheet, and lap joint lap width 23 is 40mm, overlap joint
Width 23 is wider, and the Zn steam of generation is more.The following are specific welding parameters:
Welding method: gas metal-arc welding pulse mode；
Welding wire: Oerlikon CARBOFIL 1 (diameter 1.2mm)；
Stem elongation 25:12mm；
Welding gun inclination angle: 60 °；
The welding wire midpoint of welding wire end and lap joint root distance 24:1.5mm；
Weld protective gas: Ar+8%CO2；Gas flow: 25L/min；
First gas (Ar+8%CO2) flow be 10L/min；The flow of second gas (Ar) is 20L/min；
Speed of welding: 1.7m/min；
Welding wire feeding speed: 7.3m/min；
Average welding current: 220-240A；
Average weldingvoltage: 20.5-21.5V；
Pulse peak current: 500A；The peak value of pulse duration: 1.9ms；Pulse frequency: 178HZ.
Examined and X-ray GE phoenix microme using range estimation | x nondestructive inspection detection carries out welding quality inspection:
Naked-eye observation face of weld pore-free generates；The pore amount of X-ray nondestructive inspection weld seam internal porosity 26 as the result is shown is less than
0.8%, which is area percentage, as shown in Figure 6.
As a comparison, for above-mentioned identical welding workpiece, using conventional welding method and welding parameter, welding gun spray
When mouth does not install welder of the invention, visible a large amount of stomatas inside face of weld and weld seam；And use weldering of the invention
Parameter is connect, when torch nozzle does not install welder of the invention, face of weld estimates pore-free, the pore amount inside weld seam
More than 2%, which is area percentage.
As it can be seen that welding method provided by the invention can preferably inhibit the plating of root gap smaller (being no more than 0.5mm)
Zinc steel plate lap joint stomata problem.
In conclusion the present invention provides device provide two kinds of protective gas for welded seam area.First gas
For body with the atmosphere around compensated high-speed weldering electric arc, its object is to pilot arcs to stablize burning and stable droplet transfer
Form.The oxidation of the second gas welded seam area that torch nozzle can not cover in order to prevent.The device not only further improves weld seam
Quality, and optimize High Speed Welding face of weld.
Melting when welder provided by the invention can be applied to the welding of all kinds of different melting points metals (such as galvanized steel plain sheet)
Change pole gas shielded arc welding, is particularly suitable for high-speed welding or external air flow disturbs larger situation.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description be not considered as limitation of the present invention.After those skilled in the art have read above content, for the present invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited by the attached claims
It is fixed.
Claims (24)
1. a kind of welder of consumable electrode gas-arc, which is characterized in that the welder is mounted on torch nozzle, the weldering
Rifle nozzle output welding protection gas, which includes:
First pipeline of the first gas for input offset electric arc surrounding atmosphere environment；
For inputting the second pipeline of the second gas in protection molten bath；And
Shade assembly is protected, it includes the protection over body case with inlet and outlet, settings to be used to separate sky in protection over body case
Between partition, the partition offer the notch for installing torch nozzle, partition and torch nozzle outer wall protection over body case in
It is separated out the first cavity, the second cavity, first cavity is for inputting first gas, and second cavity is for inputting the second gas
Body；Wherein, the import direction of the protection over body case is consistent with the gas input direction of the first pipeline, the second pipeline, the protective cover
The export direction of shell is consistent with the first pipeline, the gas outbound course of the second pipeline.
2. the welder of consumable electrode gas-arc as described in claim 1, which is characterized in that the first gas and weldering
It is same to connect protection gas phase；The second gas is inert gas, the gaseous mixture including argon gas, helium and argon gas and helium.
3. the welder of consumable electrode gas-arc as described in claim 1, which is characterized in that the lower edge of the partition
It is exported no more than torch nozzle.
4. the welder of consumable electrode gas-arc as described in claim 1, which is characterized in that the first cavity exit end is following
Edge and the second cavity exit end lower edge height are inconsistent.
5. the welder of consumable electrode gas-arc as described in claim 1, which is characterized in that the protection shade assembly is also
Include: the first pipeline connecting parts for connecting the first pipeline, the second pipeline connecting parts for connecting the second pipeline, this first
Pipeline connecting parts are connected to the first cavity, which is connected to the second cavity.
6. the welder of consumable electrode gas-arc as described in claim 1, which is characterized in that the protection shade assembly is also
Include: being located at the first cavity, the even gas distribution device in the second cavity, the even gas distribution device respectively with the first pipeline,
First gas, second gas are uniformly distributed by the second pipeline connection respectively, then through the first cavity exit end, the second cavity exit
End output.
7. the welder of consumable electrode gas-arc as claimed in claim 6, which is characterized in that the even gas distribution utensil
There is dense porous structure.
8. the welder of consumable electrode gas-arc as claimed in claim 6, which is characterized in that the even gas distribution device is
Muffler with dense porous structure.
9. the welder of consumable electrode gas-arc as claimed in claim 6, which is characterized in that the protection shade assembly is also
Include: the copper plug net for further making gas be evenly distributed of even gas distribution device export direction is set.
10. the welder of consumable electrode gas-arc as described in claim 1, which is characterized in that the protection shade assembly
Also include: the skirt at the first cavity exit end being set, is connected on the protective cover housing exterior walls of the first cavity, when use with
Weldment contact.
11. the welder of consumable electrode gas-arc as claimed in claim 10, which is characterized in that the skirt selection is soft
Property heat-resisting material.
12. the welder of consumable electrode gas-arc as claimed in claim 11, which is characterized in that the skirt selects special
Fluorine dragon glass fibre fire-proof high-temperature resistant adhesive tape.
13. a kind of welding method of the consumable electrode gas-arc for metallization, which is characterized in that the weldering that this method uses
Rifle nozzle is connected with gas metal-arc welding connection device described in any one of -12 according to claim 1, in welding process
In, the first gas through the input of the first pipeline enters in the first cavity, then is ejected into electric arc week by the outlet end of the first cavity
The side of placing；Second gas through the input of the second pipeline enters in the second cavity, then is ejected by the outlet end of the second cavity molten
Above pond.
14. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 13, which is characterized in that
The gas flow of the first gas is 15-25L/min, and the gas flow of second gas is 10-20L/min.
15. a kind of welding method of the consumable electrode gas-arc for metallization, which is characterized in that this method is using fusing
Pole gas shielded arc welding pulse mode, welding current use impulse waveform, and electric current includes period adjustable peak point current and base value electricity
Stream, the peak point current are not less than 450A, and the peak point current duration is not higher than 2.1ms；
Torch nozzle is also connected with gas metal-arc welding connection device described in any one of -12 according to claim 1,
In welding process, the protective gas through the input of the first pipeline is entered in the first cavity by pipeline connecting parts, then empty by first
The outlet of chamber is ejected into top around electric arc；Protective gas through the input of the second pipeline enters in the second cavity, then passes through second
The outlet of cavity is ejected into above molten bath.
16. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
The peak point current is 450-600A, and the peak point current duration is 1.7-2.0ms.
17. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 16, which is characterized in that
The peak point current is 500-560A.
18. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
In this method, welding protection gas is argon gas-carbon dioxide mix gas, and the carbon dioxide comprising 8-18%, remaining is argon gas.
19. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
In this method, using ordinary carbon steel solid core as welding wire.
20. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 19, which is characterized in that
In this method, gage of wire 1.0mm-1.2mm.
21. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
In this method, speed of welding 1.4m/min-1.8m/min.
22. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
In this method, welding gun inclination alpha is 55 °~65 °, which refers to the folder between the axis of torch nozzle and weld seam vertical line
Angle.
23. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
In this method, welding wire end midpoint and lap joint root distance are 1mm-2mm.
24. the welding method for the consumable electrode gas-arc of metallization as claimed in claim 15, which is characterized in that
The gas flow of the first gas is 15-25L/min, and the gas flow of second gas is 10-20L/min.
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| CN115255572A (en) * | 2022-08-11 | 2022-11-01 | 江苏腾奇电力科技股份有限公司 | Transverse gas shielded welding process for multipurpose end |
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