CN105331908A - Hot-stamping tailor-welded blanks of aluminum sheet - Google Patents
Hot-stamping tailor-welded blanks of aluminum sheet Download PDFInfo
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- CN105331908A CN105331908A CN201510438840.0A CN201510438840A CN105331908A CN 105331908 A CN105331908 A CN 105331908A CN 201510438840 A CN201510438840 A CN 201510438840A CN 105331908 A CN105331908 A CN 105331908A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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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
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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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
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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
- C22F1/047—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 of alloys with magnesium as the next major constituent
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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
- C22F1/05—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 of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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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
- C22F1/053—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 of alloys with zinc as the next major constituent
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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
- C22F1/057—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 of alloys with copper as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
- B21D35/006—Blanks having varying thickness, e.g. tailored blanks
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Forming a tailor-welded blank (TWB) having aluminum sheets includes various elements. For example, a hot-stamping methodology is applied to a welded blank for meeting load and stiffness requirements in tandem to weight efficiency. A TWB can result in improved material utilization, and applying the hot-stamping methodology can improve the formability of the TWB. After forming and subsequent processing, a peak-age heat treatment is utilized such that a lightweight, high strength part may be attained.
Description
Technical field
The application relates to metal forming, and relates more specifically to hot stamping welding blank.
Background technology
Vehicle structure element (such as, plate, beam, pillar etc.) is made up of mild steel usually.These parts comprise multiple region or the part with varying strength demand sometimes.Such as, inner at punching press car door, a part for car door inner support hinge can have the strength demand higher than the other parts of car door inside.Like this, can use welding blank or sheet material, it comprises the steel board that two or more that weld together have different performance (such as, thickness), and it can be stamped into parts by convention.Therefore, can design these parts to meet the demand of load and rigidity, efficiency is higher and cost-saving simultaneously.
In order to reduce vehicle weight, car body of aluminum alloy panel is more and more welcome, and uses welding aluminium blank or sheet material can be conducive to further saving cost and weight.But aluminium welding demonstrates when punching press usually compared to the intensity of mother metal reduction and formability.
Summary of the invention
One embodiment of the invention are for formation welding blank (TWB), and it comprises the first sheet material of the aluminum of the second sheet material being soldered to aluminum.In an example, TWB is heated to the solidus temperature (solidustemperature) of at least the first sheet material, and is placed in a mould.Close mould on TWB to make TWB forming member, and simultaneously by Component quench.
Another embodiment comprises a kind of method forming TWB.TWB is manufactured by the second sheet material the first sheet material of aluminum being soldered to aluminum.By weld the formability of weld seam that formed by TWB is heated at least the first sheet material solidus temperature, TWB to be placed in a mould and Component quench also improves to make TWB forming member by the mould of closing on TWB simultaneously.
In an additional embodiment, a kind of method the first sheet material of aluminum being connected to the formability of the weld seam of the second sheet material of aluminum that improves comprises various key element.Such as, the first sheet material welded together and the second sheet material are heated to the solidus temperature of the first sheet material, and are placed in a mould.Close mould on sheet material to make sheet material forming member, and simultaneously by Component quench.
Embodiments of the invention are limited by following claim, instead of are limited by summary of the invention.This provide the high level overview of all respects of the present invention, to introduce the selection of the concept further described in embodiment below.Content of the present invention not intended to be assert the key of theme required for protection or the feature of necessity, is not intended to be used as independent auxiliary with the scope determining theme required for protection yet.
Accompanying drawing explanation
Below with reference to accompanying drawings illustrative embodiment of the present invention is described in detail, is included in that this quotes, in accompanying drawing:
Fig. 1 describes the exemplary welding blank according to embodiments of the invention;
Fig. 2 describes the example system according to embodiments of the invention;
Fig. 3 describes the example hierarchical equipment (stagingapparatus) according to embodiments of the invention; And
Figure 4 and 5 respectively describe the schema separately with the step implemented according to embodiments of the invention.
Embodiment
Be specifically described to meet statutory requirement to the theme of embodiments of the invention at this.But this description also not intended to be itself limits the scope of claim necessarily.On the contrary, required theme may otherwise embody, to comprise the combination of different elements or similar element described in the present invention, and the technology in or future current together with other.Term should not be interpreted as implying any specific order between various step disclosed herein, except when when the order of separate step is by explicit state.
With reference to Fig. 1, welding blank (TWB) 12 is described, and it comprises the first sheet material 16 of the aluminum connected by weld seam 17 and the second sheet material 18 of aluminum.TWB12 can be produced by melting welding (such as, Laser Welding, electric-arc welding, etc.), or is produced by friction stir welding, and usually uses opposite joint.In order to for the purpose of description, Fig. 1 describes the weld seam 17 of connection first sheet material 16 and the second sheet material 18.Although Fig. 1 describes the TWB12 only with the first sheet material 16 and the second sheet material, in other embodiments, TWB12 comprises more than two different sheet materials, and comprises the sheet material of forming member desired number.
TWB can be used to various object, and in one embodiment, TWB12 is stamped into the parts for Motor vehicles.Such as, TWB can be stamped into A/B post, lower-edge beam (rocker), roof rail (roofrail), cross car beam (cross-carbeam), vehicle interior and the like.In one embodiment, wish TWB want rammed parts to have part containing different qualities or region.Such as, expect that the front portion of car door inner support body hinge is more firm than the other parts of car door inside.Similarly, in one embodiment, the first sheet material 16 and the second sheet material 18 are aluminum, and different in one or more.
First sheet material 16 and the second sheet material 18 can be different in various, to make characteristics of components optimization.Such as, the first sheet material 16 and the second sheet material 18 can have different thickness, alloy or its combination.
In one embodiment, the first sheet material 16 is included in the first thickness within the scope of about 0.8 millimeter to about 4.0 millimeters, and the second sheet material 18 comprises and same within the scope of about 0.8 millimeter to about 4.0 millimeters, is different from the second thickness of the first thickness.
In another embodiment, the first sheet material 16 and the second sheet material 18 can have different performances (such as, alloying constituent or series).Such as, in one embodiment, the first sheet material 16 and the second sheet material 18 are the arbitrary combination of alloy 2xxx, 5xxx, 6xxx and 7xxx.That is, aluminium alloy is usually by 4 bit digital identifications, and first is identified as main alloy element usually.Such as, in 7xxx series aluminum, main alloy element is zinc, and the main alloy element of 5xxx series is magnesium, and is magnesium and silicon for 6xxx series.The extra numeral represented by letter " x " in series name defines definite aluminium alloy.In one embodiment, can use 7075 aluminium alloys, its composition is 5.1-6.1% zinc, 2.1-2.9% magnesium, 1.2-2.0% copper and less than centesimal silicon, iron, manganese, titanium, chromium and other metal.In addition, the first and second sheet materials can have various state (temper), such as F, W, O, T4x, T6x, T7x and T8x.
TWB12 can obtain from various source.Such as, in one embodiment, TWB12 obtains as preform.As what select, welding volume can be obtained, and cut TWB12 from volume.In another embodiment, TWB12 is made into volume, and TWB is the blank coming from welding volume.Such as, welding set 14 can provide weld seam (such as, Laser Welding, electric-arc welding or like this) to two or more aluminium plates, to manufacture welding volume.
One embodiment of the invention are the formabilities for improving the weld seam 17 connecting the first sheet material 16 of aluminum and the second sheet material 18 of aluminum.That is, if do not have the present invention, weld seam 17 comprises the characteristic reducing formability.Similarly, embodiment manages some restrictions of producing herein, and this restriction is relevant to the formability of the welding joint of aluminium alloy welding blank.
With reference to Fig. 2, show the system 10 for the formation of welding blank 12 (TWB).The system 10 of Fig. 2 comprises heating installation 20, transfer equipment 22 and mould 24.The all parts of system 10 runs to manufacture the welding blank be made up of one or more aluminium alloy together, and forms required parts.
In one embodiment of this invention, heating installation 20 heats TWB12.Heating installation 20 can comprise all kinds, such as industrial electric furnace or be positioned at heating installation 20 and can produce and be enough to heat TWB12 to the baking oven of the content temperature of preset temperature.In one embodiment, TWB12 is heated to the solidus temperature of at least one in first sheet material 16 of solid solubility temperature or TWB12 or the second sheet material 18 by heating installation 20.In a further embodiment, TWB12 can not be heated beyond its liquidus line (melting) temperature by heating installation 20.
Solid solubility temperature can change according to the series of the first sheet material 16 and the second sheet material 18.Such as, the solid solubility temperature of 7xxx series alloys is generally about 460 DEG C to about 490 DEG C.The temperature that solid solubility temperature is normally such, material is easy to miscible at such a temperature.Compatibility is that material mixes with all proportions, forms the character of homogeneous solution.Compatibility can in all phases: possible in solid phase, liquid phase and gas phase.
Solidus temperature can be the thermal tracking of the curve on phasor, and below this track, the material given is entirely solid.When the melting of material starts by solidus temperature but be not material complete melting time temperature quantize.For some materials, between solidus curve and liquidus temperature, have phase, wherein this material is made up of solid phase and liquid phase simultaneously.Material from solidus temperature more close to, more materials are solid phase, and material from liquidus temperature more close to, more materials are liquid phase.Similarly, TWB12 can be heated to the solidus temperature of one of them aluminium plate, but lower than liquidus temperature, thus the TWB12 being essentially solid is provided, so that carrying and transport, also because it is liquid phase and more easily can being shaped close to liquid phase or part.
Transfer device 22 is configured to move and locates TWB12, and it is heated to the solidus temperature of at least one sheet material.In at least one embodiment, transfer device 22 is Manipulatorss, such as robot.Transfer device 22 can be configured to rapidly TWB12 is transferred to mould 24 from heating installation 20, to reduce the chance that heat runs off from TWB12.Such as, system 10 and transfer device 22 can be configured, and can not reduce or lower than the critical hardening temperature of at least one of aluminium plate 16 and 18 to make the temperature of TWB12.Critical hardening temperature is such temperature: quenching must start, at such a temperature to realize the suitable quenching of material.Such as, the critical hardening temperature of most of 7xxx series alloys is about 415 DEG C.
Mould 24 is provided to make TWB12 form the parts with predetermined shape.In at least one embodiment, mould 24 comprises the first mould 26, second mould 28, at least one driving mechanism 30 and layered device 32.
First and/or second mould 26,28 is configured to make TWB12 form the parts with predetermined shape.Driving mechanism 30 drives the first mould 26 and/or the second mould 28 is close to each other or be separated, and provides power to form TWB12.Driving mechanism 30 can be any suitable type, such as hydraulic, air-driven type, mechanical type, electromechanical type or its combination.The combination of mould 24 and driving mechanism 30 is also called as mechanical press, stamping machine, quench pressure machine.
Layered device 32 can be provided for be positioned by TWB12 between the first and second moulds 26,28 and to make it be separated with it.Similarly, layered device 32 can suppress the heat trnasfer between TWB12 and mould 24, thus helps TWB12 to remain in or higher than critical hardening temperature.Layered device 32 can receive TWB12 from transfer device 22, and can close along with the first mould 26 and/or the second mould 28 and discharge TWB12, and engages TWB12.In addition, system 10 can be configured, and runs off removing from heating installation 20 to make few heat between closing molding 24 from TWB12.In at least one embodiment, the temperature of TWB12 can reduce lower than 10 DEG C; But TWB12 may stand more temperature leak, such as, up to 75 DEG C, such as, when TWB12 is heated to 490 DEG C and critical hardening temperature is 415 DEG C.
Mould 24 can comprise the pipeline 34 of the Component quench being convenient to cooling first and/or second mould 26,28 and formed by TWB12.Pipeline 34 can be formed at hole in mould 24 or passage, or the arbitrary combination of the outside pipeline that connects and passage.Pipeline 34 can be connected to cooling source, and can receive heat-transfer medium, such as, be used for cooling die 24 to temperature required fluid from cooling source.Heat-transfer medium can be any fluid medium that mould 24 can be cooled in predetermined temperature range, and this predetermined temperature range is such as from 1 DEG C to 30 DEG C.Mould 24 can cool to suppress the mode forming condensation on the surface of one or more mould 24.Under large-scale production environment, the temperature of mould 24 is cooled to predetermined temperature range before can quenching in shaping and by TWB12, to be transferred to the heat of mould 24 during removing the parts before being formed from TWB12.
In one embodiment, make the TWB12 forming member of heating and the quenching of parts occur simultaneously.Quench rates affects final state intensity and the corrosive nature of material.In certain embodiments,---when it is from 400 DEG C to 290 DEG C---150 DEG C/sec can be equal to or greater than for the quench rates of aluminium alloy.Before being removed from mould 24 by parts, parts can be cooled to outlet temperature from 200 DEG C to 25 DEG C further, to provide the stability of size, and in ensuing treating processes, are conducive to the room temperature material processing of parts.
System 10 can be designed to be used in by one or more heating installation 20 serial or parallel connection heating and transfer at least one mould 24 subsequently for being shaped and multiple TWB12 operate continuouslys of quenching.In the shaping of TWB12 and/or the quenching process of simultaneously parts or afterwards, at least one mould can become than 30 DEG C of heat, and more than one mould 24 similarly can be used to provide production rate faster.
Parts by transfer device 22, another transfer device or can be removed from mould 24 with hand.Proceed ensuing process with back part, comprise crimping, trimming and nature and/or artificial aging, to bring high strength state to aluminium alloy part, such as T6 or T7x.
Can use five kinds of basic state codes to aluminium alloy, they are: F-manufactures state, O-as-annealed condition, H-stress hardening state, T-as-heat-treated condition and W-as-quenched condition (between solution heat treatment and artificial or natural aging).One or two digits can be followed closely for further describing after state code.The aluminium alloy with T6 state code can be crossed and artificially aged alloy by solution heat treatment, but after solution heat treatment, do not carry out cold working (or cold working can not be distinguished in material property).T6 can represent along the yield strength for material relative to the point of the peak value timeliness yield strength on the curve of time and temperature.T7x state can represent and there occurs solution heat treatment, and material exceedes along yield strength relative to peak value timeliness yield strength (overaging) artificial aging on the curve of time and temperature.T7x state material has the yield strength lower than T6 state material, but this can carry out processing to improve corrosive nature.
With reference to Fig. 3, more particularly illustrate an embodiment of layered device 32.Mould 24 can be equipped with one or more layered device 32.Such as, layered device 32 can be provided near the corner of mould or sidepiece in one or more embodiment.Layered device 32 can be located or be configured, can not hinder unlatching or the closedown of mould 24.In addition, layered device 32 contributes to isolating the material that maybe can be configured with and suppress heat to transfer to mould from TWB12.Layered device 32 can comprise pedestal 40, bracing member 42, finger piece 44 and driving mechanism 46.
Pedestal 40 can be arranged on mould 24, and can facilitate the installation of layered device 32.Bracing member 42 can extend from pedestal 40 and can be arranged on regularly pedestal 40.Bracing member 42 can comprise groove 50.Groove 50 can be configured to receive and hold the rotation of finger piece 44.
Finger piece 44 can pivotally be arranged on bracing member 42.Such as, in one or more embodiment, finger piece 44 rotatably can be connected to bracing member 42 by pivot pin.Finger piece 44 can rotate between the first position and the second position.In first location, finger piece 44 can extend away from bracing member 42 and can support TWB12.Finger piece 44 can rotate with reference to bracing member 42, and towards or enter groove 50 to the second position (being pointed out by arrow in figure 3) and depart from layered device 32 fall on mould, such as the second mould 28 to allow TWB12.
Driving mechanism 46 can be placed near layered device, and can be used to the position control providing finger piece 44.Such as, in certain embodiments, driving mechanism 46 can be the electro-motor being connected to pivot pin, and finger piece 44 rotates to the second position from first location when providing power by it, and finger piece 44 can be back to first location from the second position when power removes by spring 52.Driving mechanism 46 can be controlled by automation control system, or is controlled by operator.Driving mechanism 46 can also be the servo control mechanism (servomechanism) utilizing electric power, hydraulic pressure, pneumatic, magnetic force or theory of machines or arbitrary combination, to provide the position control of finger piece 44.
With reference to Fig. 4, schema describes series of steps, and upon being performed, these steps provide the method 410 forming welding blank.When describing the step of Fig. 4, same with reference to Fig. 2 and 3.
The second sheet material that step 412 comprises by the first sheet material of aluminum being soldered to aluminum manufactures welding blank.Such as, melting welding or friction stir welding can be used to utilize weld seam 17 that first sheet material 16 is connected to the second sheet material 18.
Method 410 also comprises the step of the various formability for improving the weld seam (such as, weld seam 17) produced by welding.Step 414 comprises the solidus temperature of welding blank heating at least the first sheet material.Such as, heating installation 20 can be used TWB12 to be heated to the solidus temperature of at least one in sheet material 16 and 18.In step 416, TWB is placed in mould.Such as, can use robot 22 that TWB12 is moved to mould 24 from heating installation 20.
Step 418 comprises closing molding on welding blank, to make welding material forming member, simultaneously by Component quench.Such as, on welding blank during closing molding 24, spiral coil cooling tube 34 is used to reduce the temperature of parts.
Referring now to Fig. 5, describe another schema of display series of steps, this step is similar to method 410, but more concrete.Be similar to method 410, method 510 is for processing or form aluminum alloy T WB.
In step 512, method 510 comprises provides aluminium alloy welding to roll up.Aluminium alloy welding volume by the first sheet material is soldered to the second sheet material to manufacture, or can obtain from volume obtained in advance.
514, volume can be made to lubricate so that cut off (blanking), the words cut off if necessary.Such as, lubrication can contribute to blank and is shaped, reduces the heat of blank edge and produce and be conducive to removing blank.But, if lubrication is considered to there is no need, or obtained blank obtained in advance, then can omit step 514.
Step 516 comprise cut off volume or otherwise by cut roll slabbing, to provide less workpiece, at this also referred to as welding blank (TWB).TWB is transferred to heating installation in step 518.
Step 520 comprise TWB is heated to temperature required, such as use heating installation 20.As previously mentioned, TWB can be heated to solid solubility temperature or the solidus temperature of one of them sheet material.The step of heating TWB can occur between 1 to 45 minute, and still can keep viable commercial.
In step 522, as previously mentioned, mould 24 is cooled to preset temperature.The cooling of mould can occur with previous one or more steps simultaneously.Step 524 comprises TWB is transferred to mould.Such as, as previously mentioned, TWB12 can use transfer device 22 to be transferred to layered device 32, to make the profiled surface interval of TWB12 and mould 24.In at least one embodiment, TWB12 can be transferred to a mould 24 from heating installation 20 by transfer device 22 in 30 seconds or shorter time.
Step 526 comprises and is positioned in mould 24 by TWB12, such as, by driving layered device 26 from first location to the second position, to be discharged on mould by TWB12, such as, on the second mould 28.In step 528, closing molding 24 is to make TWB12 forming member.In at least one embodiment, as previously mentioned, the closedown of mould 24 occurs in TWB12 generation before the cooling of critical hardening temperature.In at least one embodiment, the shutdown rate of the first and second moulds 26 and 28 can be at least 50 millimeters per second, to provide " Rapid contact " between the surface of TWB12 and mould 24, and allow the effective thermal conduction in the process of quenching between TWB12 and mould.
Step 530 comprises makes TWB formation have the parts of predetermined shape and be quenched.As previously mentioned, quenching occurs with formation TWB12 simultaneously.Quenching betides between the temperature cooling range of specifying or until the temperature of parts drops to lower than preset temperature.The temperature of detection part can be carried out by use temperature sensor, or mould is kept continuing predetermined time section, such as, the hold-time.The predetermined hold-time can be determined by experience or by numerical approximation.
In step 532, mould 24 is maintained at off-position, and in one embodiment, mould 24 is maintained at off-position until enough transfer of heat complete.In the embodiment that at least one is additional, mould 24 is kept closing about 3 to 60 seconds, so that the waste heat of removing part, for follow-up process is prepared on parts.In addition, parts can be cooled to the temperature being beneficial to materials handling.
Step 534 comprises opens mould 24 so that removing part, and in step 536, is removed by parts from mould 24.As previously mentioned, materials handling technology manually or automatically can be used to carry out removing part.In one or more embodiment, the cooling of mould 24 is removed in process can continue at parts.
In step 538, additional manufacturing step can be performed on parts.Such as, any suitable method can be used to remove the extra material of parts, such as, cut or boring.In addition, additional forming step can be adopted, such as, by parts bending or flange, to provide the structure that mould 24 can not be utilized to provide.These steps can perform to allow extra processing within a predetermined period of time, and such as, in 24 hours, this is because after this time period, parts can become too crisp.
In step 540, make this parts timeliness.The timeliness of parts can comprise nature and/or artificial aging, to reach high strength state, and such as T6 or T7x.Usa Metals association (ASM) and MILSTD (MIL) provide multiple timeliness arrangement.A kind of timeliness used together with present method is arranged to and makes parts at 120 DEG C of artificial agings at room temperature natural aging parts 24 hours again after 24 hours.
The sheet material that said system and method can be produced by having different performance forms, to balance the aldural parts of desirable strength and EAC and cost and other efficiency.In addition, parts can have the performance similar to the high-strength steel of similar geometry structure and the performance of super-high strength steel.High strength aluminium parts can be lighter than the steel of similar geometry structure.Further, system and method for the present invention produces the aldural parts of heavy body, high quality and the low cost consistent with orthodox car metal forming.Therefore, the parts following instruction of the present invention obtained can replace steel design parts with aluminum alloy structural component, and without the need to sacrificing security while reduction overall weight.In vehicle application, lighter trolley part, such as body structural components, include but not limited to rocker panel, roof rail, bumper or A, B or C post, can reduce vehicle weight, and can cause reducing fuel oil consumption and energy saving.
Many differences of described various parts are arranged and are not had the parts shown not depart from the scope of claim below.Be described the embodiment of our technology, it is intended to illustrative and nonrestrictive.For reader of the present disclosure, after reading the present invention, substituting embodiment will become apparent.Implement above-mentioned alternative method to complete when the scope of the claims below not departing from.Some characteristic sum sub-portfolio has practicality, and in not reference further feature and the incompatible use of subgroup, and can expect in the scope of claims.
Claims (20)
1. form a method for welding blank (TWB), it comprises:
TWB is manufactured by the second sheet material the first sheet material of aluminum being soldered to aluminum; And
Improve by described formability of welding the weld seam formed by following steps:
Described TWB is heated to the solidus temperature of at least described first sheet material;
Described TWB is placed in a mold; And
Close the described mould on described TWB, to make described TWB forming member, simultaneously by described Component quench.
2. method according to claim 1, wherein said second sheet material comprises the alloy different from described first sheet material.
3. method according to claim 2, the respective series of wherein said first sheet material and described second sheet material is selected from the group be made up of 2xxx, 5xxx, 6xxx and 7xxx.
4. method according to claim 1, wherein said second sheet material comprises the thickness different from described first sheet material.
5. method according to claim 4, the respective thickness of wherein said first sheet material and described second sheet material is in the scope of about 0.8 millimeter to about 4.0 millimeters.
6. method according to claim 1, wherein manufactures described TWB and comprises manufacture welding volume, and cut described TWB from described welding volume.
7. form a method for welding sheet material, described tailor welded comprises the first sheet material of the aluminum be welded on the second sheet material of aluminum, and the method comprises:
Described tailor welded is heated to the solidus temperature of at least described first sheet material;
Described welding sheet material is placed in mould; And
Described mould is closed at described welding sheet material shangguan, to make described welding sheet material forming member, simultaneously by described Component quench,
Wherein said parts comprise the first part formed by described first sheet material and the second section formed by described second sheet material, and
Wherein said first part and described second section have different thickness.
8. method according to claim 7, comprises further, manufactures welding sheet material by the second sheet material the first sheet material of described aluminum being soldered to described aluminum.
9. method according to claim 8, comprises further, cuts described tailor welded from welding volume.
10. method according to claim 7, the first sheet material of wherein said aluminum comprises the aluminium alloy of First Series, and the second sheet material of described aluminum comprises the aluminium alloy of second series, and they are different from described First Series.
11. methods according to claim 10, wherein said First Series is selected from the group formed by 2xxx, 5xxx, 6xxx and 7xxx series alloys, and wherein said second series is selected from this group equally, and different from described First Series.
12. methods according to claim 7, the first sheet material of wherein said aluminum comprises the first thickness, and the second sheet material of described aluminum comprises the second thickness, and they are different from described first thickness.
13. methods according to claim 7, the step wherein heating described welding sheet material performs outside described mould, and described method comprises the step described welding sheet material being transferred to described mould further, described step is after the step of the described welding sheet material of heating, and before described blank being placed into the step in mould, the step and the step be positioned over by described blank in described mould that wherein described blank rotary are moved to described mould complete in about 30 seconds or less time.
14. methods according to claim 7, wherein comprise described Component quench and cool described parts with the quenching velocity of at least 150 DEG C/sec.
15. methods according to claim 7, comprise further, make described parts artificial aging to reach high strength state.
16. methods according to claim 7, comprise further and make described parts timeliness to obtain T6 or T7x state aluminium alloy parts.
17. methods according to claim 7, wherein said welding sheet material is placed in described mould, with make described welding sheet material not with described contacting dies.
18. 1 kinds are improved and connect the first sheet material of aluminum and the second sheet material of aluminum to form the method for the room temperature formability of the weld seam of welding blank (TWB), and described method comprises:
Described TWB is heated to the solidus temperature of at least described first sheet material;
Described TWB is positioned in mould; And
Close the described mould on described TWB, to make described welding sheet material forming member, simultaneously by described Component quench.
19. methods according to claim 18, the respective series of wherein said first sheet material and described second sheet material can be different, and are all selected from the group be made up of 2xxx, 5xxx, 6xxx and 7xxx.
20. methods according to claim 18, wherein said first sheet material is different with the respective thickness of described second sheet material, and all in the scope of about 4.0 millimeters to about 0.8 millimeter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/450,973 | 2014-08-04 | ||
| US14/450,973 US20160030992A1 (en) | 2014-08-04 | 2014-08-04 | Hot-stamping tailor-welded blanks of aluminum sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105331908A true CN105331908A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510438840.0A Pending CN105331908A (en) | 2014-08-04 | 2015-07-23 | Hot-stamping tailor-welded blanks of aluminum sheet |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20160030992A1 (en) |
| CN (1) | CN105331908A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460416A (en) * | 2017-07-28 | 2017-12-12 | 武汉理工大学 | Agitating friction weldering tailor welded solid solution aging integral forming method |
| CN109226433A (en) * | 2018-09-30 | 2019-01-18 | 东风汽车集团有限公司 | A kind of drawing modeling design method controlling not uniform thickness tailor welded Pressing Deformation |
| CN111085587A (en) * | 2019-12-24 | 2020-05-01 | 东莞市豪斯特热冲压技术有限公司 | Stamping process |
| CN113333986A (en) * | 2021-05-31 | 2021-09-03 | 帝国理工创新有限公司 | Method for quickly forming dissimilar alloy tailor-welded blank component |
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| US10189072B2 (en) * | 2015-04-03 | 2019-01-29 | The Boeing Company | Method and system for incremental sheet forming of tailored blanks |
| FR3038242B1 (en) * | 2015-07-02 | 2017-06-23 | Constellium Neuf-Brisach | ALUMINUM ALLOY FOR WIRELESS LASER WELDING |
| MX2018002078A (en) | 2015-08-20 | 2019-01-30 | Weatherford Tech Holdings Llc | Top drive torque measurement device. |
| US10688592B1 (en) * | 2017-09-05 | 2020-06-23 | United Launch Alliance L.L.C | Friction stir welding of aluminum alloys |
| US11174542B2 (en) | 2018-02-20 | 2021-11-16 | Ford Motor Company | High volume manufacturing method for forming high strength aluminum parts |
| US11618098B2 (en) * | 2020-02-03 | 2023-04-04 | Ford Global Technologies, Llc | Methods of forming and stamping tailor friction stir welded blanks with enhanced edge stretch |
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| CN113333986A (en) * | 2021-05-31 | 2021-09-03 | 帝国理工创新有限公司 | Method for quickly forming dissimilar alloy tailor-welded blank component |
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|---|---|
| US20160030992A1 (en) | 2016-02-04 |
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Application publication date: 20160217 |