CN109249125A - Ship Welding For Dissimilar Materials Aluminium And Steel technique - Google Patents
Ship Welding For Dissimilar Materials Aluminium And Steel technique Download PDFInfo
- Publication number
- CN109249125A CN109249125A CN201811221105.4A CN201811221105A CN109249125A CN 109249125 A CN109249125 A CN 109249125A CN 201811221105 A CN201811221105 A CN 201811221105A CN 109249125 A CN109249125 A CN 109249125A
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- CN
- China
- Prior art keywords
- welding
- aluminium
- stirring
- head
- aluminium sheet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1225—Particular aspects of welding with a non-consumable tool
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
- B23K20/2275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer the other layer being aluminium
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of ship Welding For Dissimilar Materials Aluminium And Steel techniques, comprising the following steps: S1: 3~8mm of thickness aluminium sheet and steel plate deoxidation film process are wiped at aluminium sheet groove with acetone soln；Aluminium sheet and steel plate are placed on welding bench with lap joint form, aluminium sheet is located at steel plate upper layer；S2: steel plate bottom connect corresponding position with aluminium sheet equipped with heat source, and heat source heating steel sheet bottom plate is to 400~500 DEG C；S3: being equipped with protective case between steel plate and aluminium sheet, protection gas argon gas is equipped in protective case, and protection temperature degree is 200~400 DEG C；S4: stirring-head is penetrated with 0.5~0.15mm/s speed by welding plate material, penetrates 0.8~1.2mm of depth, 20~30s of stirring-head residence time, rotation extraction stirring-head；S5: stirring-head 2500~3000r/min of revolving speed, 20~30mm/min of speed of welding, welding pressure 0.2MPa, appearance of weld of the present invention are good.
Description
Technical field
The invention belongs to welding technology fields, and in particular to ship Welding For Dissimilar Materials Aluminium And Steel technique.
Background technique
As Ship Structure lightweight is increasingly taken seriously, the domestic and international structures such as many ship superstructures and outfititem are opened
Begin a large amount of using aluminium alloy, extrudate, large-scale wide cut including extraordinary specification squeeze siding and casting etc., compared to using all steel
Structure can effectively mitigate hull gross weight.Application of the aluminum alloy materials in shipbuilding proposes newly the welding of steel-aluminum structure
Requirement, since the property difference of aluminium alloy and steel is very big, directly there are many masty problems in welding.
Ship Structure aluminium alloy master plate to be applied is 5000 systems of Al-Mg ingredient and 6000 systems of Al-Mg-Si ingredient
Aluminium alloy.Marine aluminium alloy and steel have the characteristics that different melting points are big, about 1500 DEG C of the fusing point of steel, and the fusing point of aluminium about 660
DEG C, in welding process, aluminium alloy will be melted prior to steel, it is difficult to form weld seam；Density variation is big, and the density of steel is 7800kg/m3,
And the density of aluminium is 2700g/m3, the liquid aluminium in molten bath is easy to float on molten steel, keeps composition of weld line uneven, reduces weld seam
Energy；Thermal conductivity and difference of linear expansion are big, and close to twice of steel, welding process is easy to make the thermal conductivity and linear expansion coefficient of aluminium
At welded joint deformation and generate weld crack；The solid solubility of iron and aluminium is extremely low, is difficult to connect in aluminium and steel using thermodynamics method
It is connected together, steel and aluminium are easily formed the intermetallic compounds such as three aluminium of iron aluminium, two aluminium of ironization and ironization in fusion process, lead
Cause the toughness decline of welding point.
It is the intermetallic that different-thickness can be generated on the interface of its welding that aluminium and steel, which weld the most key problem,
Object can seriously damage the plasticity and toughness of welding point, and can reduce and connect when its shape links together for lamellar
The mechanical property of head.So how the generation of the intermetallic compound on aluminium, steel linkage interface is effectively controlled be aluminium,
The key point of steel dissimilar material welding.It is the welding method under a kind of solid state shape due to friction stir spot welding, welded
The heat input generated in journey is relatively low, and welding material does not reach molten state in the welding process, this can effectively inhibit gold
The formation of compound between category, while the higher welding point of available weld strength.So for two kinds of materials of aluminium and steel it
Between friction stir spot welding research have certain researching value.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, a kind of ship Dissimilar Materials Aluminium weldering is provided
Technique is connect, preferable using the welding procedure appearance of weld, surface-brightening, exit aperture is smaller, can obtain the preferable aluminium-of forming
Steel welding of dissimilar metal lap joint.
To achieve the above object, the technical scheme is to design a kind of ship Welding For Dissimilar Materials Aluminium And Steel technique, packets
Include following steps:
S1: will pass through deoxidation film process with a thickness of the aluminium sheet of 3~8mm and steel plate, and exposure crystallizes bright metal true qualities,
It welds and finishes in 4 hours after cleaning, wiped at aluminium sheet groove with acetone soln, dried；By aluminium sheet and steel plate with lap joint form
It is placed on agitating friction electric welding equipment welding bench, aluminium sheet is located at upper layer, and steel plate is located at lower layer, reduces the mill of stirring-head
Damage, extends the service life of stirring-head, improves the economy of welding procedure；
S2: the corresponding position that the steel plate bottom is connect with aluminium sheet is equipped with heat source, and the heat source heating stainless steel plate is extremely
400~500 DEG C；
S3: it is equipped with protective case between the stainless steel and aluminium sheet, is equipped with protective gas, the protection gas in the protective case
Body is argon gas, and the temperature of the protective gas is 200~400 DEG C；
S4: stirring-head is penetrated with the speed of 0.5~0.15mm/s by welding plate material, and penetrating depth is 0.8~1.2mm, stirring
The head residence time is 20~30s, the stirring-head of rotation extraction later；
S5: the revolving speed of stirring-head is 2500~3000r/min, 20~30mm/min of speed of welding, and welding pressure is
0.2MPa。
The stirring-head is tungsten-rhenium alloy, a length of 1.5~2.0mm of the needle of stirring-head, the shaft shoulder as a preferred technical solution,
Having a size of 16~18mm, the size root diameter (RD) of mixing needle is 6~8mm.
As a preferred technical solution, in the argon gas water content less than 0.05%.
2~3s is opened the protective gas before welding as a preferred technical solution, and 5~10s is closed after welding
It closes, the flow of the protective gas is 15~18L/min.
After the protection air to close closes as a preferred technical solution, cooling gas is poured, the flow of the cooling gas is
18~20L/min.
The advantages and beneficial effects of the present invention are:, surface preferable using friction stir spot Welding appearance of weld
Light, exit aperture is smaller, can obtain the preferable aluminium-steel welding of dissimilar metal lap joint of forming.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that aluminium sheet and steel plate of the present invention are placed.
In figure: 1, aluminium sheet；2, steel plate；3, stirring-head.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Ship Welding For Dissimilar Materials Aluminium And Steel technique, comprising the following steps:
S1: will pass through deoxidation film process with a thickness of the aluminium sheet of 3~8mm and steel plate, and exposure crystallizes bright metal true qualities,
It is wiped, is dried with acetone soln at aluminium sheet groove；Aluminium sheet and steel plate are placed on agitating friction electric welding equipment with lap joint form to weld
It connects on workbench, aluminium sheet is located at upper layer, and steel plate is located at lower layer；
S2: the corresponding position that the steel plate bottom is connect with aluminium sheet is equipped with heat source, and the heat source heating stainless steel plate is extremely
400~500 DEG C；
S3: it is equipped with protective case between the stainless steel and aluminium sheet, is equipped with protective gas, the protection gas in the protective case
Body is argon gas, and the temperature of the protective gas is 200~400 DEG C；
S4: stirring-head is penetrated with the speed of 0.5~0.15mm/s by welding plate material, and penetrating depth is 0.8~1.2mm, stirring
The head residence time is 20~30s, the stirring-head of rotation extraction later；
S5: the revolving speed of stirring-head is 2500~3000r/min, 20~30mm/min of speed of welding, and welding pressure is
0.2MPa。
The stirring-head is tungsten-rhenium alloy, and a length of 1.5~2.0mm of the needle of stirring-head, the shaft shoulder is having a size of 16~18mm, stirring
The size root diameter (RD) of needle is 6~8mm.
Water content is less than 0.05% in the argon gas.
2~3s is opened the protective gas before welding, and 5~10s is closed after welding, the stream of the protective gas
Amount is 15~18L/min.
After the protection air to close closes, cooling gas is poured, the flow of the cooling gas is 18~20L/min.
Appearance of weld is preferable, and surface-brightening, exit aperture is smaller, and it is preferable to obtain forming by friction stir spot welding
Aluminium-steel welding of dissimilar metal lap joint.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. ship Welding For Dissimilar Materials Aluminium And Steel technique, which comprises the following steps:
S1: deoxidation film process, the bright metal true qualities of exposure crystallization, aluminium sheet will be passed through with a thickness of the aluminium sheet of 3~8mm and steel plate
It is wiped, is dried with acetone soln at groove；Aluminium sheet and steel plate are placed on agitating friction electric welding equipment Welder with lap joint form
Make on platform, aluminium sheet is located at upper layer, and steel plate is located at lower layer；
S2: the corresponding position that the steel plate bottom is connect with aluminium sheet is equipped with heat source, the heat source heat stainless steel plate to 400~
500℃；
S3: it is equipped with protective case between the stainless steel and aluminium sheet, is equipped with protective gas in the protective case, the protective gas is
Argon gas, the temperature of the protective gas are 200~400 DEG C；
S4: stirring-head is penetrated with the speed of 0.5~0.15mm/s by welding plate material, and penetrating depth is 0.8~1.2mm, and stirring-head stops
Staying the time is 20~30s, the stirring-head of rotation extraction later；
S5: the revolving speed of stirring-head is 2500~3000r/min, 20~30mm/min of speed of welding, welding pressure 0.2MPa.
2. ship Welding For Dissimilar Materials Aluminium And Steel technique according to claim 1, which is characterized in that the stirring-head is W-Re
Alloy, a length of 1.5~2.0mm of the needle of stirring-head, the shaft shoulder having a size of 16~18mm, the size root diameter (RD) of mixing needle is 6~
8mm。
3. ship Welding For Dissimilar Materials Aluminium And Steel technique according to claim 2, which is characterized in that water content in the argon gas
Less than 0.05%.
4. ship Welding For Dissimilar Materials Aluminium And Steel technique according to claim 3, which is characterized in that the protective gas is welding
It meets preceding 2~3s to open, 5~10s is closed after welding, and the flow of the protective gas is 15~18L/min.
5. ship Welding For Dissimilar Materials Aluminium And Steel technique according to claim 4, which is characterized in that the protection air to close closes
Afterwards, cooling gas is poured, the flow of the cooling gas is 18~20L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811221105.4A CN109249125A (en) | 2018-10-19 | 2018-10-19 | Ship Welding For Dissimilar Materials Aluminium And Steel technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811221105.4A CN109249125A (en) | 2018-10-19 | 2018-10-19 | Ship Welding For Dissimilar Materials Aluminium And Steel technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109249125A true CN109249125A (en) | 2019-01-22 |
Family
ID=65046007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811221105.4A Pending CN109249125A (en) | 2018-10-19 | 2018-10-19 | Ship Welding For Dissimilar Materials Aluminium And Steel technique |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299807A (en) * | 2020-04-14 | 2020-06-19 | 江苏磐一智能装备有限公司 | Friction stir welding with function of removing aluminum layer |
| CN111673263A (en) * | 2020-05-11 | 2020-09-18 | 首钢集团有限公司 | Friction stir welding method for ultrahigh-strength steel and aluminum alloy |
| CN111745286A (en) * | 2020-06-24 | 2020-10-09 | 哈尔滨万洲焊接技术有限公司 | Friction stir welding method for lap joint of dissimilar metals |
| CN112894122A (en) * | 2021-01-22 | 2021-06-04 | 西安建筑科技大学 | Aluminum/steel composite transition joint for ships and preparation method thereof |
| CN113441832A (en) * | 2021-07-26 | 2021-09-28 | 大连交通大学 | Pre-slotting type friction stir welding method |
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| DE602006003140D1 (en) * | 2005-07-21 | 2008-11-27 | Boeing Co | A friction stir welding method for joining at least two workpieces with the application of an adhesive between the at least two workpieces |
| CN101966621A (en) * | 2010-11-04 | 2011-02-09 | 哈尔滨工业大学 | Electric arc preheating repair welding method for stir friction plug |
| CN105033475A (en) * | 2015-09-18 | 2015-11-11 | 哈尔滨工业大学 | Steel-side-high-frequency-induction-heating-assisted friction stir welding method for alumimum-steel material butt joint |
| CN107160029A (en) * | 2017-07-12 | 2017-09-15 | 山东大学 | A kind of additional heating source auxiliary friction stir welding method and device |
| CN108581174A (en) * | 2017-12-22 | 2018-09-28 | 上海交通大学 | A kind of stirring-head and welding method for the welding of dissimilar material agitating friction |
-
2018
- 2018-10-19 CN CN201811221105.4A patent/CN109249125A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602006003140D1 (en) * | 2005-07-21 | 2008-11-27 | Boeing Co | A friction stir welding method for joining at least two workpieces with the application of an adhesive between the at least two workpieces |
| CN101966621A (en) * | 2010-11-04 | 2011-02-09 | 哈尔滨工业大学 | Electric arc preheating repair welding method for stir friction plug |
| CN105033475A (en) * | 2015-09-18 | 2015-11-11 | 哈尔滨工业大学 | Steel-side-high-frequency-induction-heating-assisted friction stir welding method for alumimum-steel material butt joint |
| CN107160029A (en) * | 2017-07-12 | 2017-09-15 | 山东大学 | A kind of additional heating source auxiliary friction stir welding method and device |
| CN108581174A (en) * | 2017-12-22 | 2018-09-28 | 上海交通大学 | A kind of stirring-head and welding method for the welding of dissimilar material agitating friction |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299807A (en) * | 2020-04-14 | 2020-06-19 | 江苏磐一智能装备有限公司 | Friction stir welding with function of removing aluminum layer |
| CN111673263A (en) * | 2020-05-11 | 2020-09-18 | 首钢集团有限公司 | Friction stir welding method for ultrahigh-strength steel and aluminum alloy |
| CN111745286A (en) * | 2020-06-24 | 2020-10-09 | 哈尔滨万洲焊接技术有限公司 | Friction stir welding method for lap joint of dissimilar metals |
| CN112894122A (en) * | 2021-01-22 | 2021-06-04 | 西安建筑科技大学 | Aluminum/steel composite transition joint for ships and preparation method thereof |
| CN113441832A (en) * | 2021-07-26 | 2021-09-28 | 大连交通大学 | Pre-slotting type friction stir welding method |
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Application publication date: 20190122 |