CN106166640A - A kind of high-strength steel and the welding procedure of aluminium alloy - Google Patents
A kind of high-strength steel and the welding procedure of aluminium alloy Download PDFInfo
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- CN106166640A CN106166640A CN201610681136.2A CN201610681136A CN106166640A CN 106166640 A CN106166640 A CN 106166640A CN 201610681136 A CN201610681136 A CN 201610681136A CN 106166640 A CN106166640 A CN 106166640A
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- strength steel
- aluminium alloy
- welding
- steel
- aluminising
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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
-
- 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
- B23K9/235—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses the welding procedure of a kind of high-strength steel and aluminium alloy, including step in detail below: polishing and oil removing, activation, hot aluminizing, cooling mold, polish and welding.In the present invention, the activation processing before hot aluminising can activate surface of steel plate, and forms layer protecting film at surface of steel plate, on the one hand can promote that aluminum liquid extends at steel surface, on the other hand can promote the combination between aluminized coating and matrix.The present invention welds after high strength steel surface active hot-dip aluminizing again; one layer of thin intermetallic compounds layer has been formed between leaching aluminium lamination and steel matrix; it can play certain barrier action in welding process; and can avoid or reduce its oxidation in the course of processing, also can play a protective role during depositing.Present invention optimizes the solder technology of high strength steel and aluminium alloy, the research for automotive light weight technology provides basis, and for high strength steel and aluminium alloy integral structure, the application on automobile provides bigger development space and breakthrough.
Description
Technical field
The present invention relates to a kind of high-strength steel and the connection side of aluminium alloy of the walking machine technical field such as automobile, trolley coach
Method, is specifically related to the welding procedure of a kind of high-strength steel and aluminium alloy.
Background technology
Automobile structure uses the composite construction of steel-aluminum, inevitably relates to the connectivity problem of both steel and aluminum.Mesh
Before, it is possible to the main method realizing dissimilar metal steel and aluminum connection has bonding, mechanical connection (such as riveting, bolt connection etc.) and weldering
Connect.The bonding joint mechanical strength obtained is the highest, can be used only in the occasion that some butt joint performance requirements are the highest；Though being mechanically connected
So it is still and realizes the important method that aluminium alloy is connected with steel, but, the component obtained by such mechanical connection means is airtight
Property poor, and joint is heavier, and shape is also restrained, has no idea to meet high-quality Al and aluminium alloy and steel is combined
Structural member demand in auto manufacturing, particularly higher to some surface requirements workpiece such as automobile panel, it is difficult to full
Foot requirement；Welding as method of attachment important in metal material, status and advantage in industry manufacture are that other connects
The method of connecing can not be substituted, and for automobile industry, and remaining on is the mode of a kind of economical rationality.
Dissimilar metal is because of the difference of character, and welding is relatively difficult.Particularly the welding between steel and aluminum, always is
A difficult problem for the research of welding field.Welding method almost relates to the various methods that welding field is conventional at present, such as agitating friction
Weldering, arc welding, Laser Welding, electric arc laserHybrid welding etc..Welding pretreatment technique includes sealing weld silk, fills out metal dust, interpolation
Pad is as barrier layer, plating Zn or Al as transition zone etc., and these pre-treating technologies are all to its property of welded joint
Improve, and intensity still cannot meet the demand of practical application in industry.Under this overall background of automotive light weight technology, high-strength steel, super
The application of the light metals such as high-strength steel and the high aluminium alloy of specific strength, magnesium alloy is more and more extensive, high strength steel and aluminium alloy it
Between weldability problems demand solve.
Summary of the invention
For solving the problem that existing prior art exists, the present invention provides the welding procedure of a kind of high-strength steel and aluminium alloy,
For achieving the above object, the technical solution used in the present invention is:
A kind of high-strength steel and the welding procedure of aluminium alloy, including step in detail below:
(1) polishing and oil removing: first oxide film dissolving is removed in the polishing of high-strength steel sand for surface paper, then use acetone ultrasonic cleaning；
(2) activation: high-strength steel is put into the aqueous solution type activator of 5 g/L configured, and the process time is 14 ~ 18 s；
(3) hot aluminizing: high-strength steel is put into aluminising liquid and carries out hot-dip aluminizing, the alumetizing process parameter that employing optimizes: the temperature of aluminising
Degree is set as 725 DEG C, and the time of aluminising is 80～100 s；
(4) cool down, polish: the high-strength steel natural cooling after hot aluminizing, after cooling, use sand papering；
(5) welding: use alternating current TIG welding method to weld high-strength steel and aluminium alloy, uses the TIG weld ginseng optimized
Number: welding current 78 ~ 82 A, speed of welding 0.6 ~ 0.8 m/min.
Between described step (2) and (3), need high-strength steel is air-dried after step (2), and carry out step immediately
(3).
Aqueous solution type activator in described step (2) is by AlCl3And AlF3Composition, its proportioning is 1:1.
The constituent of the aluminising liquid in described step (3) includes aluminum 88.5%, copper 5%, nickel 3%, manganese 0.6%, alterant
2.15%, refining agent 0.75%.
Beneficial effects of the present invention:
In the present invention, the activation processing before hot aluminising can activate surface of steel plate, and forms layer protecting film at surface of steel plate, is oozing
Make aluminum liquid extend at steel surface during aluminum, make steel surface by the good moistening of liquid aluminium liquid, thus to promote to obtain high-quality
Alumetized steel, the microcosmic injustice activating surface of steel plate in addition can play certain " nail catcher " effect, promote between aluminized coating and matrix
Combination.
The present invention welds after high strength steel surface active hot-dip aluminizing again, is formed between leaching aluminium lamination and steel matrix
One layer of thin intermetallic compounds layer, it can play certain barrier action in welding process.Additionally, the leaching of high strength steel surface
Aluminum, it is also possible to avoid or reduce its oxidation in the course of processing, also can play a protective role during depositing.
Present invention optimizes the solder technology of high strength steel and aluminium alloy, the research for automotive light weight technology provides basis, for
The application on automobile of high strength steel and aluminium alloy integral structure provides bigger development space and breakthrough.
Accompanying drawing explanation
Fig. 1 is the welding process flow figure of high-strength steel and aluminium alloy.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with
Detailed description of the invention, is expanded on further the present invention.
Embodiment 1
A kind of high-strength steel and the welding procedure of aluminium alloy, including step in detail below:
(1) polishing and oil removing: first oxide film dissolving is removed in the polishing of high-strength steel sand for surface paper, then use acetone ultrasonic cleaning；
(2) activation: high-strength steel is put into the aqueous solution type activator of 5 g/L configured, and the process time is 14 s；
(3) hot aluminizing: high-strength steel is put into aluminising liquid and carries out hot-dip aluminizing, the alumetizing process parameter that employing optimizes: the temperature of aluminising
Degree is set as 725 DEG C, and the time of aluminising is 80 s.
(4) cooling molds, polishes:
(5) welding: use alternating current TIG welding method to weld high-strength steel and aluminium alloy, uses the TIG weld ginseng optimized
Number: welding current 82 A, speed of welding 0.8 m/min.
Between described step (2) and (3), need high-strength steel is air-dried after step (2), and carry out step immediately
(3).
Aqueous solution type activator in described step (2) is by AlCl3And AlF3Composition, its proportioning is 1:1.
The constituent of the aluminising liquid in described step (3) includes aluminum 88.5%, copper 5%, nickel 3%, manganese 0.6%, alterant
2.15%, refining agent 0.75%.
Welded Joints carries out tensile strength test, and recording its tensile strength is 126.3 N/mm2。
Embodiment 2
A kind of high-strength steel and the welding procedure of aluminium alloy, including step in detail below:
(1) polishing and oil removing: first oxide film dissolving is removed in the polishing of high-strength steel sand for surface paper, then use acetone ultrasonic cleaning；
(2) activation: high-strength steel is put into the aqueous solution type activator of 5 g/L configured, and the process time is 16 s；
(3) hot aluminizing: high-strength steel is put into aluminising liquid and carries out hot-dip aluminizing, the alumetizing process parameter that employing optimizes: the temperature of aluminising
Degree is set as 725 DEG C, and the time of aluminising is 90 s；
(4) cool down, polish: the high-strength steel natural cooling after hot aluminizing, after cooling, use sand papering；
(5) welding: use alternating current TIG welding method to weld high-strength steel and aluminium alloy, uses the TIG weld ginseng optimized
Number: welding current 80 A, speed of welding 0.6 m/min.
Between described step (2) and (3), need high-strength steel is air-dried after step (2), and carry out step immediately
(3).
Aqueous solution type activator in described step (2) is by AlCl3And AlF3Composition, its proportioning is 1:1.
The constituent of the aluminising liquid in described step (3) includes aluminum 88.5%, copper 5%, nickel 3%, manganese 0.6%, alterant
2.15%, refining agent 0.75%.
Welded Joints carries out tensile strength test, and recording its tensile strength is 136.4 N/mm2。
Embodiment 3
A kind of high-strength steel and the welding procedure of aluminium alloy, including step in detail below:
(1) polishing and oil removing: first oxide film dissolving is removed in the polishing of high-strength steel sand for surface paper, then use acetone ultrasonic cleaning；
(2) activation: high-strength steel is put into the aqueous solution type activator of 5 g/L configured, and the process time is 18 s；
(3) hot aluminizing: high-strength steel is put into aluminising liquid and carries out hot-dip aluminizing, the alumetizing process parameter that employing optimizes: the temperature of aluminising
Degree is set as 725 DEG C, and the time of aluminising is 100 s；
(4) cooling molds, polishes: the high-strength steel natural cooling after hot aluminizing, uses sand papering after cooling；
(5) welding: use alternating current TIG welding method to weld high-strength steel and aluminium alloy, uses the TIG weld ginseng optimized
Number: welding current 78 A, speed of welding 0.7 m/min.
Between described step (2) and (3), need high-strength steel is air-dried after step (2), and carry out step immediately
(3).
Aqueous solution type activator in described step (2) is by AlCl3And AlF3Composition, its proportioning is 1:1.
The constituent of the aluminising liquid in described step (3) includes aluminum 88.5%, copper 5%, nickel 3%, manganese 0.6%, alterant
2.15%, refining agent 0.75%.
Welded Joints carries out tensile strength test, and recording its tensile strength is 121.5 N/mm2。
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (4)
1. a high-strength steel and the welding procedure of aluminium alloy, it is characterised in that include step in detail below:
(1) polishing and oil removing: first oxide film dissolving is removed in the polishing of high-strength steel sand for surface paper, then use acetone ultrasonic cleaning；
(2) activation: high-strength steel is put into the aqueous solution type activator of 5 g/L configured, and the process time is 14 ~ 18 s；
(3) hot aluminizing: high-strength steel is put into aluminising liquid and carries out hot-dip aluminizing, the alumetizing process parameter that employing optimizes: the temperature of aluminising
Degree is set as 725 DEG C, and the time of aluminising is 80～100 s；
(4) cool down, polish: the high-strength steel natural cooling after hot aluminizing, after cooling, use sand papering；
(5) welding: use alternating current TIG welding method to weld high-strength steel and aluminium alloy, uses the TIG weld ginseng optimized
Number: welding current 78 ~ 82 A, speed of welding 0.6 ~ 0.8 m/min.
A kind of high-strength steel the most according to claim 1 and the welding procedure of aluminium alloy, between described step (2) and (3),
Need high-strength steel is air-dried after step (2), and carry out step (3) immediately.
A kind of high-strength steel the most according to claim 1 and the welding procedure of aluminium alloy, the aqueous solution type in described step (2)
Activator is by AlCl3And AlF3Composition, its proportioning is 1:1.
A kind of high-strength steel the most according to claim 1 and the welding procedure of aluminium alloy, the aluminising liquid in described step (3)
Constituent includes aluminum 88.5%, copper 5%, nickel 3%, manganese 0.6%, alterant 2.15%, refining agent 0.75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681136.2A CN106166640A (en) | 2016-08-18 | 2016-08-18 | A kind of high-strength steel and the welding procedure of aluminium alloy |
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| CN201610681136.2A CN106166640A (en) | 2016-08-18 | 2016-08-18 | A kind of high-strength steel and the welding procedure of aluminium alloy |
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| CN106166640A true CN106166640A (en) | 2016-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146483A (en) * | 2019-06-28 | 2020-12-29 | 浙江三花智能控制股份有限公司 | Plate heat exchanger |
| CN113210909A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Method for improving surface performance of magnesium alloy CMT additive manufacturing cladding layer |
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| CN2589784Y (en) * | 2002-12-25 | 2003-12-03 | 徐壮业 | Aluminium alloy radiator water tank pipe with aluminium-dipped steel bushing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146483A (en) * | 2019-06-28 | 2020-12-29 | 浙江三花智能控制股份有限公司 | Plate heat exchanger |
| CN113210909A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Method for improving surface performance of magnesium alloy CMT additive manufacturing cladding layer |
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Application publication date: 20161130 |
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