CN110093533A - One kind is suitble to welding with high-intensitive aluminium extrusion Materials And Manufacturing Processes - Google Patents
One kind is suitble to welding with high-intensitive aluminium extrusion Materials And Manufacturing Processes Download PDFInfo
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- CN110093533A CN110093533A CN201810905564.8A CN201810905564A CN110093533A CN 110093533 A CN110093533 A CN 110093533A CN 201810905564 A CN201810905564 A CN 201810905564A CN 110093533 A CN110093533 A CN 110093533A
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- aluminium extrusion
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- suitable welding
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/024—Anodisation under pulsed or modulated current or potential
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Arc Welding In General (AREA)
Abstract
This application provides one kind to be suitble to welding with high-intensitive aluminium extrusion Materials And Manufacturing Processes, it is respectively as follows: Si:0.9-1.2% comprising substance mass fraction, Fe:0.2-0.4%, Cu:0.25-0.5%, Mn:1.2-1.4%, Zn:0.05-0.1%, Ti:0.08-0.18%, remaining is aluminium, and steps are as follows: raw material being packed into smelting furnace to it and is all melted；Melt after standing is passed through into online degasification and bipolar filtering；It casts to melt；It is kept the temperature after aluminium alloy round cast ingot heating is homogenized；Pre-heated barstock forms rod extrusion；Surface by micro-arc oxidation processing is carried out to squeeze wood.The application is effectively improved the casting character and deposited strength of alloy, and processing step is simple, and energy consumption is lower, and metal utilization greatly improves.
Description
Technical field
The present invention relates to field of aluminum alloys, more particularly to a kind of high-intensitive aluminium extrusion material of suitable welding and its manufacture work
Skill.
Background technique
Aluminium alloy density is low, and specific strength is higher, and plasticity is good, can be processed into various profiles, has excellent electric conductivity, thermally conductive
Property and corrosion stability are used extensively on automotive field.Automobile Welding is typically chosen 3003 aluminium alloys with aluminium alloy currently on the market,
But tensile strength about 130MPa after 3003 traditional aluminum alloy piping weldings, yield strength about 50MPa are not able to satisfy future automobile
The market demand of industry, so finding a kind of Automobile Welding with high-intensitive aluminium extrusion material is the fact that can not evade.
Summary of the invention
(1) technical problems to be solved
In view of above-mentioned technical problem, this application provides one kind to be suitble to the high-intensitive aluminium extrusion material of welding and its manufacture work
Skill.
(2) technical solution
This application provides one kind to be suitble to the high-intensitive aluminium extrusion material of welding, and each material mass score is respectively as follows: Si:0.9-
1.2%, Fe:0.2-0.4%, Cu:0.25-0.5%, Mn:1.2-1.4%, Zn:0.05-0.1%, Ti:0.08-0.18%,
Remaining is aluminium.
In some embodiments of the present application, manufacturing technology steps are as follows:
Step 1: raw material is packed into smelting furnace to it and is all melted；
Step 2: by the melt after standing by casting after line degasification and bipolar filtering to melt；
Step 3: it will be kept the temperature after aluminium alloy round cast ingot homogeneous heating；
Step 4: pre-heated barstock forms rod extrusion；
Step 5: surface by micro-arc oxidation processing is carried out to squeeze wood.
In some embodiments of the present application, among the Al-Ti that the Ti element is Al-40wt%Ti by mass fraction
Alloy is added.
In some embodiments of the present application, Mg element and Cd element are added in fusion process.
In some embodiments of the present application, the smelting temperature in the step 1 is 830 DEG C.
In some embodiments of the present application, the casting speed in the step 2 is 70mm/min, and cooling water flow is
3000L/min。
In some embodiments of the present application, heating temperature is 600 DEG C in the step 3, and 5h is kept the temperature after homogenization.
In some embodiments of the present application, 450 DEG C of the bar preheating temperature in the step 4, extrusion speed 13mm/
s。
In some embodiments of the present application, the forward voltage that surface by micro-arc oxidation processing is carried out in the step 5 is constant
Value is 440v, and negative voltage 160v, the differential arc oxidation time is 30min, pulse frequency 100HZ.
In some embodiments of the present application, the additive amount of the Mg element is twice of Ti element, the Cd element
Additive amount is consistent with the additive amount of Zn element.
(3) beneficial effect
It can be seen from the above technical proposal that the application at least has the advantages that one of them:
(1) the application expands the content of Mn and Si, promotes the precipitation of AlMnFeSi phase, can be effectively improved the casting of alloy
Make performance and deposited strength.
(2) Mg, Cd element that the application is added can be when alloy refine, and the C2Cl6 (carbon trichloride) generated with it is generated
Cl elementary dilution Mg element is chemically reacted and be in league with, can reduce the residual of foreign gas in metallic aluminium, ultimately forms high-precision
Liquid aluminium.
(3) the application passes through the ceramic layer that differential arc oxidation obtains, not only decorative performance with higher, but also substrate surface
The hardness of modified layer, corrosion-resistant and heat resistance suffer from more significant improvement.
(4) processing step of the application is simple, and energy consumption is lower, and metal utilization greatly improves.
Specific embodiment
Embodiment 1
One kind being suitble to the high-intensitive aluminium extrusion material of welding, and each material mass score is respectively as follows: Si:0.9-1.2%, Fe:
0.2-0.4%, Cu:0.25-0.5%, Mn:1.2-1.4%, Zn:0.05-0.1%, Ti:0.08-0.18%, remaining is aluminium.
Specifically, contain Si in the application, can effectively improve the wearability and hardness of the application, but containing as Si
It will increase the difficulty of extruding when measuring excessively high, therefore the Si content of the application is 0.9-1.2%.
The content of Fe is 0.2-0.4% in the application, and aluminium alloy should reduce the content of Fe to the greatest extent, the meeting when too high levels of Fe
Alloy is set to become fragile, machinability is deteriorated, while the mobility of Fe will affect the smoothness of alloy surface.
The content of Zn is 0.05-0.1% in the application, generates obvious intensity to aluminium alloy and acts on, but when content is larger has
Make the tendency that casting cracks.
Mn content in the application is 1.2-1.4%, and integral strength, toughness and the hardenability of aluminium alloy can be improved in Mn,
Crystal grain can be refined and improve corrosion resistance, but low-alloyed thermal conductivity can drop in too high levels.
Ti titanium in the application has refinement crystal grain and seam organization, reduces tearing tendency, improves material mechanical performance
Effect.The additional amount of titanium only needs 0.08-0.18%, has added and has easily been formed containing titanium intermetallic compound, to alloy instead
Squeezing ground, surface smoothness adversely affect.
The content of Cu is 0.25-0.5% in the application, and a small amount of Cu, which is added, in aluminium alloy can not only generate certain consolidate
Molten invigoration effect, and Cu can accelerate Precipitation Kinetics by changing the precipitation sequence of aluminium alloy, promote forming core, generate more
The precipitated phase of tiny Mass, to increase the yield strength of aluminium alloy.
The content of each substance of the application can change to a certain extent, the content different aluminum alloys of element it is thermally conductive
Property, corrosion resistance, yield strength also change.
Present invention also provides one kind to be suitble to the high-intensitive aluminium extrusion manufacture process of welding, and key step is as follows: will be former
Material, which is packed into smelting furnace to it, all to be melted；By the melt after standing by pouring after line degasification and bipolar filtering melt
Casting；It will be kept the temperature after aluminium alloy round cast ingot homogeneous heating；Pre-heated barstock forms rod extrusion；It is micro- that surface is carried out to squeeze wood
Arc oxidation processes.
It is specifically that raw material is as follows: Si:0.9-1.2%, Fe:0.2-0.4%, Cu:0.25-0.5%, Mn:1.2-
1.4%, Zn:0.05-0.1%, Ti:0.08-0.18%, remaining is aluminium, is packed into smelting furnace, and smelting temperature is 710-780 DEG C.
Mg and Cd is added in fusion process, the additive amount of Mg element is twice of Ti element, additive amount and the Zn element of Cd element
Additive amount is consistent, until all fusings.It illustrates, in the Al-Ti that Ti element is Al-40wt%Ti by mass fraction
Between the mode of alloy be added, crystal grain can be refined and improve corrosion resistance, improve the effect of material mechanical performance.
Alloy melting carries out in 25t heat accumulating type natural gas melting and heat preservation furnace.Furnace temperature first should be risen into 700 DEG C of left sides before shove charge
The right side, and one layer of furnace cleaning agent, thorough prepurging, then shove charge, melting are sprinkled in furnace in the ratio of 1kg/t (batch).Fusion process
It is middle to use permanent magnetic stirring equipment, to accelerate melting progress.Smelting temperature is 710-780 DEG C.Take the chemical examination of on-the-spot sample analysis sample qualified
Afterwards, solution left standstill 20-30min is transferred to next procedure.
High pure nitrogen using purity not less than 99.998% refines melt.Refining temperature should be controlled in 730-
745℃.Refining agent usage amount is controlled by 1.0-1.5kg/t (batch), and the refining pressure of high pure nitrogen is controlled with molten aluminum surface
There is slight rolling to be advisable.Refining time is 20min or so.After refining, molten aluminum surface scum is thoroughly removed, stands 15-
Hydrogen content after 20min in test furnace in melt, being less than 0.18ml/100gAl is qualification.The step can effectively discharge rate melt
Miscellaneous gas in body, improves the purity of melt.
Before melt is come out of the stove, carry out casting before preparation, emphasis be chute metaideophone system, the repairing of flow table and preheating and
The inspection of casting machine water system accomplishes that each crystallizer cascade is completely uniform.Emphasis prevents the secondary dirt of metal during metaideophone
Dye closes metal drop, allows melt smooth flow under metal bath surface.It, will be linear thin using wire feeder before Rose Box
Agent is sent into chute, is sent into speed and is determined by the Ti content of requirement in alloy.
Melt from standing furnace to casting machine mold metaideophone for stream during, using ceramic foam filter to melt
Further slagging-off, and Rose Box inlet dispose glass wool cloth filter screen, with prevent nonmetallic slag inclusion remaining in melt into
Enter ingot casting.The specification of ceramic foam filter determines that the total filtration yield of the metal of normally about 450mm filter plate is about 25t by flow；
Mesh number is determined that the foamed ceramic filter plate of general 40ppi (referring to 40 holes of every 25.4mm length) is once filtered by Melt parity
The field trash of 55% 4 μm of sizes can be removed.The step can be effectively filtered the impurity in melt, into-step raising melt
Clarity.
Melt produces bar, casting using identical-level hot-top casting semi-continuous process after degasification and filtering two procedures
Make that main technologic parameters are as follows: casting temperature is 720-735 DEG C, and cooling water flow is 2000~4000L/min, and casting speed is
60~80mm/min.
Homogenization Treatments are carried out to aluminium alloy round cast ingot after pouring, homogenization process parameter is as follows: heating temperature is
595-605 DEG C, heating time 2-3h, 5-6h is kept the temperature, the type of cooling is that mist is cold.
Bar is preheated to 440-460 DEG C in advance, using one kind on 70MN extruder Ф 420mm × 1200mm extrusion cylinder
Special diffluence combination die single hole forward extrusion production.Due to squeezing influence ratio of the variation of temperature, extrusion speed to extruding force
It is larger, 440 DEG C, when extrusion speed is 12-14mm/s, it may appear that squeeze motionless phenomenon are reduced to when squeezing temperature.It was squeezing
Cheng Zhong, squeeze pressure are reduced with the raising of temperature, and are squeezed temperature and improved the plastic deformation ability that can improve alloy, because
This squeezes temperature should be at 440-460 DEG C, and extrusion speed should be 12-14mm/s.Extruding temperature is higher, extrusion speed is faster, more has
It is generated conducive to recrystallization and crystal grain is grown up, so as to cause product forms strength reduction.
Surface by micro-arc oxidation processing is carried out to sample using WHD-28 type differential arc oxidation system, voltage is 0~750V, electric current
0~100A, 50~2000Hz of frequency, electrolyte system is silicate systems: 8g/L sodium metasilicate, 2g/L sodium hydroxide, 1.5g/L
Sodium tungstate and 2g/LC10H14N2O8Na22H2O.Stainless steel trough body is connected to power supply in constant pressure impulse micro-arc oxidation process
Cathode opens circulating cooling system to guarantee electrolyte temperature at 35 DEG C or so.What aluminum alloy materials were obtained by differential arc oxidation
Ceramic layer, not only decorative performance with higher, and also the hardness of surface modification layer, corrosion-resistant and heat resistance suffer from
It is more significant to improve.
Embodiment 2
Al-1.3Mn-1.15Si-0.25Fe-0.45Cu-0.07Zn-0.10Ti, melting and casting speed is 65mm/min, cold
But water flow be 3000L/min, homogenized for 600 DEG C thereafter, keep the temperature 5h, 450 DEG C of bar preheating temperature, extrusion speed
The forward voltage steady state value of 12mm/s, surface by micro-arc oxidation processing are 425v, negative voltage 140v, and the differential arc oxidation time is
20min, pulse frequency 85HZ.Preparation the alloy by welding after tensile strength be 163MPa, yield strength 89MPa,
Elongation percentage is 22.2%, and hardness is general, and corrosion resistance is general.
Embodiment 3
Al-1.3Mn-1.15Si-0.25Fe-0.45Cu-0.07Zn-0.12Ti, melting and casting speed is 65mm/min, cold
But water flow be 3000L/min, homogenized for 600 DEG C thereafter, keep the temperature 5h, 450 DEG C of bar preheating temperature, extrusion speed
The forward voltage steady state value of 13mm/s, surface by micro-arc oxidation processing are 430v, negative voltage 150v, and the differential arc oxidation time is
25min, pulse frequency 90HZ.Preparation the alloy by welding after tensile strength be 160MPa, yield strength 88MPa,
Elongation percentage is 21.6%, and hardness is higher, and corrosion resistance is general.
Embodiment 4
Al-1.3Mn-1.15Si-0.25Fe-0.45Cu-0.07Zn-0.14Ti, melting and casting speed is 65mm/min, cold
But water flow be 3000L/min, homogenized for 600 DEG C thereafter, keep the temperature 5h, 450 DEG C of bar preheating temperature, extrusion speed
The forward voltage steady state value of 14mm/s, surface by micro-arc oxidation processing are 440v, negative voltage 160v, and the differential arc oxidation time is
30min, pulse frequency 100HZ.Preparation the alloy by welding after tensile strength be 166MPa, yield strength 90MPa,
Elongation percentage is 23%, and hardness is higher, and corrosion resistance is stronger.The present embodiment is the optimal embodiment of the application.
So far, the present embodiment is described in detail.According to above description, those skilled in the art should be to this
Application has clear understanding.
It should be noted that in specification text, the implementation for not being painted or describing is general in technical field
Form known to logical technical staff, is not described in detail.In addition, the above-mentioned definition to each element and method is not limited in
Various specific structures, shape or the mode mentioned in embodiment.
It should also be noted that, can provide the demonstration of the parameter comprising particular value herein, but these parameters are without definite etc.
In corresponding value, but analog value can be similar in acceptable error margin or design constraint.In addition, unless specifically described
Or the step of must sequentially occurring, there is no restriction for the sequences of above-mentioned steps in listed above, and can be changed according to required design
Or it rearranges.And above-described embodiment can be mixed with each other and be arranged in pairs or groups using or with other realities based on the considerations of design and reliability
It applies a mix and match to use, i.e., the technical characteristic in different embodiments can freely form more embodiments.
Particular embodiments described above has carried out further in detail the purpose of the application, technical scheme and beneficial effects
Describe in detail it is bright, it is all it should be understood that be not intended to limit this application the foregoing is merely the specific embodiment of the application
Within spirit herein and principle, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the application
Within the scope of shield.
Claims (10)
1. one kind is suitble to welding with high-intensitive aluminium extrusion material, which is characterized in that be respectively as follows: Si:0.9- comprising substance mass fraction
1.2%, Fe:0.2-0.4%, Cu:0.25-0.5%, Mn:1.2-1.4%, Zn:0.05-0.1%, Ti:0.08-0.18%,
Remaining is aluminium.
2. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding as described in claim 1, which is characterized in that step is such as
Under:
Step 1: the substance is packed into smelting furnace to it and is all melted；
Step 2: by the melt after standing by casting after line degasification and bipolar filtering to melt；
Step 3: it will be kept the temperature after aluminium alloy round cast ingot homogeneous heating；
Step 4: pre-heated barstock forms rod extrusion；
Step 5: surface by micro-arc oxidation processing is carried out to squeeze wood.
3. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that described
Ti element is added by the Al-Ti intermediate alloy that mass fraction is Al-40wt%Ti.
4. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that molten
Mg element and Cd element are added during refining.
5. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that described
Smelting temperature in step 1 is 710-780 DEG C.
6. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that described
Casting speed in step 2 is 60~80mm/min, and cooling water flow is 2000~4000L/min.
7. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that described
Heating temperature is 595-605 DEG C in step 3, keeps the temperature 5-6h after homogenization.
8. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that described
Bar preheating temperature in step 4 is 440-460 DEG C, extrusion speed 12-14mm/s.
9. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 2, which is characterized in that described
The forward voltage steady state value that surface by micro-arc oxidation processing is carried out in step 5 is 440v, negative voltage 160v, when differential arc oxidation
Between be 30min, pulse frequency 100HZ.
10. a kind of high-intensitive aluminium extrusion manufacture process of suitable welding according to claim 4, which is characterized in that institute
The additive amount for stating Mg element is twice of Ti element, and the additive amount of the Cd element is consistent with the additive amount of Zn element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810905564.8A CN110093533A (en) | 2018-08-10 | 2018-08-10 | One kind is suitble to welding with high-intensitive aluminium extrusion Materials And Manufacturing Processes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810905564.8A CN110093533A (en) | 2018-08-10 | 2018-08-10 | One kind is suitble to welding with high-intensitive aluminium extrusion Materials And Manufacturing Processes |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001226729A (en) * | 2000-02-10 | 2001-08-21 | Calsonic Kansei Corp | Aluminum alloy for heat exchanger excellent in corrosion resistance |
| CN101298644A (en) * | 2008-06-19 | 2008-11-05 | 廖健 | High-performance electrophoresis aluminum alloy construction section bar and method for making same |
-
2018
- 2018-08-10 CN CN201810905564.8A patent/CN110093533A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001226729A (en) * | 2000-02-10 | 2001-08-21 | Calsonic Kansei Corp | Aluminum alloy for heat exchanger excellent in corrosion resistance |
| CN101298644A (en) * | 2008-06-19 | 2008-11-05 | 廖健 | High-performance electrophoresis aluminum alloy construction section bar and method for making same |
Non-Patent Citations (3)
| Title |
|---|
| （匈牙利）布拉: "《铝的焊接》", 30 December 1964, 中国工业出版社 * |
| 宋立杰等: "《冶金企业废弃生产设备设施处理与利用》", 28 February 2009, 冶金工业出版社 * |
| 高成等: "《微弧氧化工艺研究》", 30 March 2018, 电子科技大学出版社 * |
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