CN110524143A - The device and method of weld porosity defect in a kind of elimination aluminum alloy piping welding - Google Patents
The device and method of weld porosity defect in a kind of elimination aluminum alloy piping welding Download PDFInfo
- Publication number
- CN110524143A CN110524143A CN201910711157.8A CN201910711157A CN110524143A CN 110524143 A CN110524143 A CN 110524143A CN 201910711157 A CN201910711157 A CN 201910711157A CN 110524143 A CN110524143 A CN 110524143A
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- China
- Prior art keywords
- aluminum alloy
- welding
- cartridge heater
- alloy piping
- weld
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention provides a kind of device and method of weld porosity defect in elimination aluminum alloy piping welding, using the protection air-flow overflowed in inductive heating weldment reverse side fixture, the protective gas of room temperature is heated to the boiling point that temperature is more than water, and guarantee before starting welding, weldment to-be-welded region is removed by high temperature gas flow, the moisture of the adsorptions such as shield jig, ensure that to-be-welded region leaves no residue moisture, guarantee there is no moisture retention in molten bath in subsequent welding process, near Seam and heat effected zone, to eliminate the gas hole defect generated in aluminum alloy piping welding by moisture.It solves the problems, such as to generate gas hole defect in aluminum alloy piping welding, simplifies the method for preventing weld blowhole defect from generating, improve the quality of welding point.
Description
Technical field
Present patent application is related to weldment technical field, weld porosity defect in especially a kind of elimination aluminum alloy piping welding
Device and method.
Background technique
In aircraft manufacturing field, in order to achieve the purpose that aircraft loss of weight, the aluminum alloy materials for largely having used density extremely low,
Achieve the purpose that material loss of weight.In order to further reach structural weight reduction and improve the requirement of production efficiency, abandoned as far as possible in engineering
The method of mechanical connection, using more efficient fusion welding technology.However, due to aluminium alloy itself, aluminium alloy
Fusion welding have the shortcomings that one it is fatal, be very easy to when fusion welding generate gas hole defect.Gas pore in weld metal defect is not
The intensity that weld seam can only be reduced, more important is the fatigue lives that will be greatly reduced structural member, therefore each standard is right
The quantity, size and location of gas hole defect work it out detailed regulation in welded seam of aluminium alloy.Such as the navigation mark HB/Z120 in China
Regulation in " aluminium and aluminium alloy welding process and quality control standards (QCS) ", " first-order weld does not allow that there are any surface pores；It is internal
The diameter of stomata be not greater than 0.5 times after thickness, quantity must not exceed 3, the gross area must not exceed 15mm2", and require three
Person meets simultaneously.Regulation in the standard ZPS10320-000000 " melting welding acceptance criteria " of civil aircraft ARJ, " welds A grades
Seam, the single diameter maximum value of surface pores are no more than 0.25T or 0.75mm, take smaller value (T is plate thickness)；And two stomatas
Spacing be not less than 5mm；5 stomatas are up in every 50mm fusion length ", it also requires while meeting.It can be seen that each boat
Empty manufacturing company and country propose high control requirement to the gas hole defect in aluminum alloy melting weldering, it is desirable that in welding point
Strongly avoid the occurrence of gas hole defect.
The main reason for gas hole defect is produced in weld seam is to be adsorbed on the moisture of near zone to be welded before welding, weldering
Entering in molten pool metal in termination process, under the arcing of superhigh temperature, moisture is decomposed into hydrogen atom and oxygen atom in weld seam molten bath,
And then it forms stomata and remains in weld metal.Since welding procedure is the physical and chemical process of a flash melt and solidification,
The hydrogen atom and oxygen atom of formation can not all quickly be precipitated from molten bath, and aggregation forms hydrogen and oxygen rapidly under high temperature,
It is closed in the weld metal solidified, forms discrete or chain gas hole defect immediately, when under X-ray detection,
It appears in egative film.Therefore, the moisture being adsorbed on weldment and welding fixture before welding is thoroughly removed, is to eliminate welded seam of aluminium alloy
The principal element of middle gas hole defect.In order to eliminate the moisture of absorption, common process has following four, pickling weldering before 1. welding
Part, and control the time interval being cleaned between welding；2. in the drying in oven weldment more than 130 DEG C, and reducing to the greatest extent and turning
Shift time；3. wiping to-be-welded region again using acetone or alcohol before closing on welding, residual moisture is removed；4. being operated in weldment
Interior installation air-conditioning and dehumidifier reduce the moisture content etc. under welding region environment.It is for eliminating weldment surface residual
Moisture, but have little effect.
Summary of the invention
To solve the above-mentioned problems, the invention proposes it is a kind of elimination aluminum alloy piping welding in weld porosity defect device and
Method dries welding region using high temperature gas flow, removes the moisture of to-be-welded region absorption.Stomata is reduced to the maximum extent to lack
The source of production is fallen into, while weld root being protected not aoxidized.
The device of weld porosity defect in a kind of elimination aluminum alloy piping welding, including cartridge heater, screen drum, coil, inductive heating
Device, coil are wrapped on cartridge heater, and are placed in screen drum together with cartridge heater, and coil is connect with inductive heater, screen drum and
Air hole is provided on the tube wall of cartridge heater, entire protective device is placed on back of weld.High temperature resistant can be selected not in the material of screen drum
Conductive material, the present invention in Ceramics.High temperature alloy can be selected in the material of cartridge heater, and heating cylinder material is in the present invention
GH4169。
The method of weld porosity defect, includes the following steps: in a kind of elimination aluminum alloy piping welding
1 is powered coil, generates induced current heating coil and cartridge heater；
2 by room temperature protection gas be passed through in cartridge heater, by cartridge heater will protect temperature degree be heated to 150 DEG C~190 DEG C it
Between；
3 high temperature protection air-flows are flowed out by the venthole on cartridge heater, and flow through screen drum；
4 final high temperature protection air-flows reach back of weld from air-flow metal lens spilling.
Start induction coil before welding and heats gas in socket and cylinder, preparatory duration of ventilation 10s~20s, protection air-flow amount
It is maintained between 5~7L/min.In welding process, protection air-flow amount is maintained between 2~4L/min.
The beneficial effects of the present application are as follows: 1) at the weldment back side shield jig be installed, and be connected with argon gas (Ar) as protection
Gas, using the method heated protective gas of inductive heating to 150 DEG C~190 DEG C, protection air-flow flows through weld seam and near zone,
Remove the moisture on surface；2) it is connected with protective gas in welding process whole process, since protection air-flow temperature is higher, can achieve preheating
The effect of the gentle cold welding seam of weldment, more conducively exclusion Residual Pores defect, improve weldquality.
Attached drawing with reference to embodiments is described in further detail the application:
Detailed description of the invention
Fig. 1 welds back side device and weldment overall structure diagram.
Fig. 2 device unit block diagram.
Fig. 3 protection air-flow drying position to be welded flows longitudinally through figure.
Fig. 4 protection air-flow drying position to be welded flows transversely across figure.
Explanation: 1- airflow inlet tube is numbered in figure；2- welding fixture；3- coil；4- screen drum；5- air-flow metal is saturating
Mirror；The first weldment of 6-；The second weldment of 7-；8- cartridge heater；9- overflows tracheae mouth；10- protection air-flow.
Specific embodiment
Referring to attached drawing 1, change the method that traditional aluminum alloy piping welding does not use back side fixture, by 6 He of the first weldment of aluminium alloy
Second weldment 7 is placed on weldment fixture 2, and guarantees that weld groove is in the central location of air-flow metal lens 5.
As depicted in figs. 1 and 2.Device includes cartridge heater 8, screen drum 4, coil 3, inductive heater, and coil 3 is wrapped in heating
It on cylinder 8, and is placed in screen drum 4 together with cartridge heater 8, coil 3 is connect with inductive heater, the tube wall of screen drum 4 and cartridge heater 8
On be provided with air hole, entire protective device is placed on back of weld.High temperature resistant electrically non-conductive material can be selected in the material of screen drum 4, this
Ceramics in invention.High temperature alloy can be selected in the material of cartridge heater 8, and heating cylinder material is GH4169 in the present invention.
Start to weld preceding 10s~20s, inductive heater is passed through high-frequency alternating current to coil 3, voltage: 200V~250V, frequency
Rate: 10KHz, electric current: 10A, coil 3 generates thermal energy, by kelvin effect in the 8 surface heat production of high temperature alloy cartridge heater.Meanwhile it is logical
It crosses airflow inlet tube 1 and inputs inertia protection gas, flow is maintained between 5~7L/min, and protection air-flow 10 is heated in high temperature alloy
150 DEG C~190 DEG C are heated in cylinder 8, the venthole on 8 tube wall of cartridge heater, 10 flowing through coil 3 of protection air-flow and screen drum
4。
The air-flow being heated continues up the air-flow metal lens 5 for flowing through and making using red copper T1, as shown in figure 3, finally
The back side and the weld groove for reaching weldment, remove the moisture for being adsorbed on weldment to-be-welded region surface.Air-flow metal lens 5 uses
Thermal conductivity it is fabulous red copper T1 material production, the heat of dispersed-heated air-flow can be continued, as shown in figure 4, expand butt-welding fitting and
The heated perimeter of welding fixture 2 removes the moisture being adsorbed on welding fixture 2 and weldment.
In the 10s~20s to ventilate in advance, high temperature protection air-flow 10 by the moisture of fully erased weldment adsorption, it
After start to weld.In welding process, the high temperature gas flow of 2~4L/min is still supplied, guarantees that unwelded region is in High Temperature Gas
In the cleaning of stream, prevent the moisture in surrounding air from penetrating into welding region.Extra protective gas is overflowed from excessive tracheae mouth 9,
Guarantee that the air-flow of weld root is appropriate, flow speed stability.
The present invention increases inductive heating facility and protective gas channel in welding fixture.It is dried in real time using high temperature gas flow
Dry weld seam near zone moisture, cleaning are adsorbed on the residual moisture of the device surfaces such as weldment, fixture, it is ensured that exist without residual moisture
Near weld seam, prevent the gas hole defect generated by moisture.
Claims (7)
1. it is a kind of eliminate aluminum alloy piping welding in weld porosity defect device, it is characterised in that including cartridge heater, screen drum, coil,
Inductive heater, coil are wrapped on cartridge heater, and are placed in screen drum together with cartridge heater, and coil and inductive heater connect
It connects, air hole is provided on the tube wall of screen drum and cartridge heater, entire protective device is placed on back of weld.
2. a kind of device for eliminating weld porosity defect in aluminum alloy piping welding according to claim 1, it is characterised in that institute
The material for stating screen drum is high temperature resistant electrically non-conductive material.
3. a kind of device for eliminating weld porosity defect in aluminum alloy piping welding according to claim 2, it is characterised in that institute
The material of screen drum is stated as ceramics.
4. a kind of device for eliminating weld porosity defect in aluminum alloy piping welding according to claim 1, it is characterised in that institute
The material for stating cartridge heater is high temperature alloy.
5. a kind of device for eliminating weld porosity defect in aluminum alloy piping welding according to claim 4, it is characterised in that institute
State the material heating cylinder material GH4169 of cartridge heater.
6. a kind of method for eliminating weld porosity defect in aluminum alloy piping welding, it is characterised in that include the following steps:
Coil is powered by 6-1, generates induced current heating coil and cartridge heater；
Room temperature protection gas is passed through in cartridge heater by 6-2, temperature degree will be protected to be heated between 150 DEG C~190 DEG C by cartridge heater；
6-3 high temperature protection air-flow is flowed out by the venthole on cartridge heater, and flows through screen drum；
The final high temperature protection air-flow of 6-4 reaches back of weld from air-flow metal lens spilling.
7. a kind of method for eliminating weld porosity defect in aluminum alloy piping welding according to claim 6, it is characterised in that open
Begin before welding gas in induction coil heating socket and cylinder, preparatory duration of ventilation 10s~20s, and protection air-flow amount is maintained at 5~
Between 7L/min.In welding process, protection air-flow amount is maintained between 2~4L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910711157.8A CN110524143A (en) | 2019-08-02 | 2019-08-02 | The device and method of weld porosity defect in a kind of elimination aluminum alloy piping welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910711157.8A CN110524143A (en) | 2019-08-02 | 2019-08-02 | The device and method of weld porosity defect in a kind of elimination aluminum alloy piping welding |
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| CN110524143A true CN110524143A (en) | 2019-12-03 |
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| CN201910711157.8A Pending CN110524143A (en) | 2019-08-02 | 2019-08-02 | The device and method of weld porosity defect in a kind of elimination aluminum alloy piping welding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112372192A (en) * | 2021-01-18 | 2021-02-19 | 泛海海工(山东)智能装备有限公司 | Welding set based on thing networking platform boats and ships assemblage grillage structure |
| CN112475643A (en) * | 2020-11-24 | 2021-03-12 | 中国船舶科学研究中心 | Welding device and welding process for reducing porosity in laser welding joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528242A (en) * | 2010-12-17 | 2012-07-04 | 上海航天设备制造总厂 | Aluminum alloy tube broaching welding method |
| JP5326344B2 (en) * | 2007-04-27 | 2013-10-30 | 新日鐵住金株式会社 | Heat-resistant structure with excellent creep characteristics in heat-affected zone |
| CN205768066U (en) * | 2016-05-31 | 2016-12-07 | 上海典码电子科技有限公司 | A kind of streamline code spraying machine shower nozzle and ink jet numbering machine |
| CN106583889A (en) * | 2016-12-07 | 2017-04-26 | 淮海工学院 | Automated aluminum alloy plate welding device with acetone washing unit |
| CN207476895U (en) * | 2017-08-08 | 2018-06-12 | 南京老山药业股份有限公司 | A kind of honey processing concentration cooling integrated device |
| CN208781819U (en) * | 2018-09-21 | 2019-04-23 | 德淮半导体有限公司 | Nozzle component and semiconductor processing equipment for semiconductor processing equipment |
-
2019
- 2019-08-02 CN CN201910711157.8A patent/CN110524143A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5326344B2 (en) * | 2007-04-27 | 2013-10-30 | 新日鐵住金株式会社 | Heat-resistant structure with excellent creep characteristics in heat-affected zone |
| CN102528242A (en) * | 2010-12-17 | 2012-07-04 | 上海航天设备制造总厂 | Aluminum alloy tube broaching welding method |
| CN205768066U (en) * | 2016-05-31 | 2016-12-07 | 上海典码电子科技有限公司 | A kind of streamline code spraying machine shower nozzle and ink jet numbering machine |
| CN106583889A (en) * | 2016-12-07 | 2017-04-26 | 淮海工学院 | Automated aluminum alloy plate welding device with acetone washing unit |
| CN207476895U (en) * | 2017-08-08 | 2018-06-12 | 南京老山药业股份有限公司 | A kind of honey processing concentration cooling integrated device |
| CN208781819U (en) * | 2018-09-21 | 2019-04-23 | 德淮半导体有限公司 | Nozzle component and semiconductor processing equipment for semiconductor processing equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475643A (en) * | 2020-11-24 | 2021-03-12 | 中国船舶科学研究中心 | Welding device and welding process for reducing porosity in laser welding joint |
| CN112372192A (en) * | 2021-01-18 | 2021-02-19 | 泛海海工(山东)智能装备有限公司 | Welding set based on thing networking platform boats and ships assemblage grillage structure |
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Application publication date: 20191203 |
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