CN110465573A - A method of lightweight thin-walled sheet metal part is manufactured with data for guiding - Google Patents
A method of lightweight thin-walled sheet metal part is manufactured with data for guiding Download PDFInfo
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- CN110465573A CN110465573A CN201910786108.0A CN201910786108A CN110465573A CN 110465573 A CN110465573 A CN 110465573A CN 201910786108 A CN201910786108 A CN 201910786108A CN 110465573 A CN110465573 A CN 110465573A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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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
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
-
- 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
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A method of lightweight thin-walled sheet metal part being manufactured for guiding with data, the invention belongs to Sheet metal forming fields.It solves the problems, such as that the hot press-formed needs of tradition take a significant amount of time and cost.It is realized by following step: the data such as performance requirement according to the plastic strain amount of material in the baking finish process of user, Element Design, manufacturing process and after shaping, it is analyzed in the method that data are oriented to, selection contains the plate of specific microstructure, experiments verify that cross database in retrieved, obtain the forming parameter of optimization；Metal blank is heated rapidly to target temperature, and the control rate of heat addition is quickly transferred in cold mold, is stamping, drip molding is quenched with the rate not less than critical hardening rate.The present invention proposes new data to be oriented to quickly hot formed method, for producing complex-shaped super-high strength steel, high strength alumin ium alloy and titanium alloy material part.Meet the requirement produced in enormous quantities in industry for part.
Description
Technical field
It is the method for being oriented to manufacture lightweight thin-walled sheet metal part that the present invention relates to a kind of with data, belongs to metal forming neck
Domain.
Background technique
According to " ' 13 ' and the year two thousand thirty traffic of publication in 2018 where National Development and Reform Commission's energy research
It is shown in department's energy conservation object research " report, it is Chinese passenger car average specific European Union car weight 9%, big by 1%；Lighter than U.S. vehicle 21%,
It is small by 10%.And the average fuel consumption of Chinese fleet is than European Union overall height 26%；Only lower than U.S. vehicle 4%.In view of car weight because
Element is also higher than american car energy-output ratio.China currently executes the mark of " Passenger Car Fuel Consumption Standard consumption limit value " fourth stage
Standard, wherein target in 2015 is 6.9L/100km, the year two thousand twenty target is 5L/100km.Under such Policy Background, automobile will
Largely body lightening is realized with new materials such as super-high strength steel, high strength alumin ium alloy, titanium alloys.
Super-high strength steel, high strength alumin ium alloy, the plastic deformation regime of titanium alloy are small under room temperature, and forming property is poor.Such as adopt
With cold punching pressing formation, required punching press tonnage is big, is easy cracking.Simultaneously because punching press rebound is big, part size is also difficult to control.
Therefore traditional cold stamping method is not applicable, and auto industry is promoted to put into huge energy to carry out grinding for hot press-formed technology
Study carefully.Blank shape, heating temperature, furnace inside holding time, press temperature, cavity rate, dwell time, quenching rate, timeliness temperature
The factors such as degree and aging time can all generate direct influence to part performance after formability of materials or forming.
Traditional hot press-formed process and required time are as shown in Fig. 2, hot press-formed process includes 40 minutes or so
Hot forming process and the artificial aging treatment process of a few hours, each process requires to take a substantial amount of time and the energy, special
It is not the time that artificial aging treatment process even needs a few hours or a few days.If can be by thin-walled sheet metal part heat forming technology
Production cycle foreshortens to 4-13 seconds, then super-high strength steel, high strength alumin ium alloy and titanium alloy can more be widely used in automobile
The production of lightweight structural parts, to achieve the purpose that mitigate weight, reduce cost.
Summary of the invention
The present invention provide it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, thus when saving research and development
Between and cost.The present invention is realized by following step:
One, in advance experiments verify that obtaining metal blank database, metal blank database includes each metal blank crystal phase
And its forming parameter of corresponding optimization；
Two, according to metal blank database, the data demand of user is analyzed in the method that data are oriented to, selection is closed
The suitable original metal plate containing specific microstructure；
Wherein, user require data include baking finish process, Element Design, in manufacturing process metal blank plastic strain amount
And the performance requirement after forming；Data guiding, which refers to calculate by metal blank database, contains the initial of specific microstructure
The process of metal blank；
Three, it is examined in metal blank database according to the original metal plate containing specific microstructure of selection
Rope obtains the forming parameter optimized accordingly；
The processing and manufacturing of following steps is carried out according to the forming parameter of acquisition:
Four, the metal blank containing specific microstructure is heated rapidly to target temperature and obtains thermometal plate；
Five, thermometal plate is quickly transferred in cold mold, and guarantees the temperature after metal blank is transferred to cold mold
Not less than its forming temperature；
Six, the metal sheet stamping in cold mold is shaped, obtains drip molding；
Seven, drip molding is carried out quenching in cold mold and pressure maintaining, quenching rate is not less than critical hardening rate.
Preferably, in the step one, forming technological parameter includes: the rate of heat addition, target temperature, forming temperature
Degree, plate transfer time, plate mobile cooling rate, mold dwell time, critical hardening rate etc..
Preferably, the rate of heat addition of the metal blank is within the scope of 15-200 DEG C/s.
Preferably, the target temperature (TT) calculation formula are as follows:
Target temperature (TT)=forming temperature (TF)+metal blank transfer time (s) * metal blank mobile cooling rate
(℃/s)；
Wherein, metal blank transfer time determines by the following method:
Transfer time of the metal blank from heating equipment to shaping dies: pass through test of many times and record plate from heating
The temperature-fall period being placed in air is taken out in equipment, so that it is determined that when transmitting of the metal blank from heating equipment to shaping dies
Between.
Preferably, the metal blank mobile cooling rate is prepared by the following:
Metal blank is collected in the temperature change of moving process by thermocouple, draws the time changing curve figure of temperature,
Using slope of a curve as mobile cooling rate.
Preferably, the metal blank is one of super-high strength steel, high strength alumin ium alloy and titanium alloy material.
Preferably, the critical hardening rate can determine by the following method: testing and compare in different quenchings
Under rate, the properties of drip molding guarantee that drip molding meets the requirement of user.
Preferably, in the step two, the step of suitably containing the original metal plate of specific microstructure is selected,
Confirm after being observed by transmission electron microscope (TEM), the matched specific microstructure requirement of the method to meet data guiding.
Preferably, data are required for user performance are as follows: thin-walled metal parts material is AA6082 aluminum alloy materials, plate
With a thickness of 2mm, formation of parts is " u "-shaped component；The specific microstructure determined based on data guiding method are as follows: 25%pre- β "
Phase, 25%GP phase, 40% β " mutually with 10% β phase；The forming parameters determined based on data guiding method are as follows: rate of heat addition 45-
55 DEG C/s, 300-325 DEG C of forming temperature, mold dwell time: 2s, average rate of temperature fall are 80 DEG C/s.
Preferably, data are required for user performance are as follows: thin-walled sheet metal part material is super-high strength steel, and sheet thickness is
2mm, formation of parts are " u "-shaped component；Select super-high strength steel microstructure contain 87% martensite, 12% ferrite and
1% austenite is quickly heated with the rate of heat addition of 55-65 DEG C/s, and plate is made to be rapidly heated to target temperature (TT)；At
Shape temperature (TF) it is 425-450 DEG C；Dwell time is 5 seconds.
Preferably, data are required for user performance are as follows: thin-walled sheet metal part material selects TC4 titanium alloy material, plate
With a thickness of 2mm, formation of parts is to reinforce rib component；The microstructure of TC4 titanium alloy is selected to contain 50% β phase and 50% α phase, with
The rate of heat addition of 50-60 DEG C/s is quickly heated, and plate is made to be rapidly heated to target temperature (TT)；Forming temperature (TF) be
725-750℃；Dwell time is 6 seconds.
Preferably, the rate of heat addition of the metal blank is within the scope of 40-60 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 60-80 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 80-1000 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 100-120 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 120-140 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 140-160 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 160-180 DEG C/s.
Preferably, the rate of heat addition of the metal blank is within the scope of 180-200 DEG C/s.
Preferably, the critical hardening rate can determine by the following method: testing and compare in different quenchings
Under rate, the properties of drip molding guarantee that drip molding meets the requirement of user.
The utility model has the advantages that
It is the method for being oriented to manufacture lightweight thin-walled sheet metal part that the invention proposes a kind of with data, and this method can be used for
The mass production of complex-shaped metal material part.Such as in automobile manufacturing enterprise, there are Element Design, baking finish process,
The data such as performance requirement in manufacturing process after the plastic strain amount of material and forming, are divided by the method that data are oriented to
Analysis, by information experiments verify that being retrieved in the metal blank database crossed, acquisition is initial containing specific microstructure
The forming parameter of metal blank information and optimization, for manufacturing.This be the present invention optimization energy consumption time consuming processes from
And realize the foundation of technological improvement.
By carrying out the quick hot forming experiment of super-high strength steel, high strength alumin ium alloy and titanium alloy material, the method for the present invention
Feasibility be verified.Those skilled in the art produce and process efficiency institute it is contemplated that reducing each work to improve
The duration of sequence, but compared with conventional metals plate forming technique, technological improvement means of the invention are passed not by simple shorten
The time of each manufacturing procedure is realized in processing method of uniting, but hot before interminable forming by optimizing in conventional forming techniques
It treatment process and eliminates in conventional forming techniques for improving part performance and the artificial aging treatment process that carries out contracts
Short process time.Thus the present invention, which realizes optimization and removes the foundation of the two energy consumption time consuming processes from, is had with traditional technology
Significant difference and be not readily conceivable that, can substantially reduce to the time of metal material heating in forming process, and remove from
Ageing treatment process after forming, to improve production efficiency.Forming process of the invention include quickly heating, transfer, at
Total production cycle of thin-wall metal plate part heat forming technology can be can be controlled in 4- by shape, quenching and pressure maintaining, the method for the present invention
Within 13 seconds, not only increases the production efficiency of lightweight thin-walled sheet metal part and expand application.
In addition, the method for the present invention can produce lightweight thin-walled sheet metal part, dropped under the premise of guaranteeing physical property
Low weight achievees the effect that energy-saving and emission-reduction to reduce oil consumption.
Detailed description of the invention
Temperature curve and schematic diagram when Fig. 1 is hot forming metal material quick using the method for the present invention；
Fig. 2 is the technics comparing figure that traditional hot forming and data are directed to shape；
Fig. 3 is the " u "-shaped formed parts picture of AA6082 aluminium alloy；
Fig. 4 is the " u "-shaped formed parts picture of super-high strength steel；
Fig. 5 is the reinforcing rib formed parts picture of TC4 titanium alloy.
Specific embodiment
Specific embodiment 1: embodiment is described with reference to Fig. 1, the forming of part is realized by following step:
The information that user provides is as shown in the table:
One, in advance experiments verify that obtaining metal blank database, metal blank database includes each metal blank crystal phase
And its forming parameter of corresponding optimization；
It is answered according to the plasticity of material in the baking finish process of user's (such as automobile manufacturing enterprise), Element Design, manufacturing process
The data such as the performance requirement after variable and forming, are analyzed with the method that data are oriented to, and selection contains specific microstructure
Initial plate.The microstructure of material is confirmed after being observed by transmission electron microscope (TEM), to meet number
According to the matched specific microstructure requirement of guiding method.
According to the user such as baking finish process of (automobile manufacturing enterprise), Element Design, the plasticity of material is answered in manufacturing process
The data such as performance requirement after variable and forming obtain optimization experiments verify that retrieved in the database crossed
Forming parameter.Forming technological parameter includes: the rate of heat addition, target temperature, forming temperature, plate transfer time, plate shifting
Dynamic rate of temperature fall, critical hardening rate, mold dwell time etc..
Two, the metal blank containing specific microstructure is heated rapidly to target temperature (TT), obtain thermometal plate.
The rate of heat addition is within the scope of 15-200 DEG C/s.
Target temperature (TT) it is calculated by the following formula:
Target temperature (TT)=forming temperature (TF)+metal blank transfer time (s) * metal blank mobile cooling rate
(℃/s)；
Wherein, metal blank transfer time determines by the following method:
Transfer time of the metal blank from heating equipment to shaping dies: pass through test of many times and record plate from heating
The temperature-fall period being placed in air is taken out in equipment, so that it is determined that when transmitting of the metal blank from heating equipment to shaping dies
Between.
Metal blank mobile cooling rate is prepared by the following:
Metal blank is collected in the temperature change of moving process by thermocouple, draws the time changing curve figure of temperature,
Using slope of a curve as mobile cooling rate.
Three, forming temperature (T is down in the temperature of plateF) before, thermometal plate is quickly transferred in cold mold.
Passing time of the plate from heating equipment to cold mold can determine by the following method: carrying out many experiments and remember
Plate is recorded from the temperature-fall period that taking-up is placed in air in heating equipment.Plate mobile cooling rate can be by the following method
It obtains: plate being collected in the temperature change of moving process by thermocouple, is depicted as curve graph, the analysis slope of curve is moved
Rate of temperature fall.
Four, the metal sheet stamping forming in cold mold, obtains drip molding.
Five, drip molding is carried out quenching in cold mold and pressure maintaining, quenching rate is not less than critical hardening rate
Critical hardening rate can determine by the following method: testing and compare under different quenching rates, drip molding
Properties, guarantee that drip molding meets the requirement of user.
Specific embodiment 2: illustrating present embodiment below with reference to Fig. 1, Fig. 2 and Fig. 3.Present embodiment and tool
One difference of body embodiment is that the thin-walled sheet metal part material in present embodiment is AA6082 aluminum alloy materials, and plate is thick
Degree is 2mm.Formation of parts is " u "-shaped component.
For information provided by user 1 and 2, required according to the specific microstructure that data are oriented to method acquisition and optimal
The forming parameters of change are as follows:
Experimental verification is carried out using the part of user 1 in present embodiment.
Step 2 select aluminium alloy microstructure contain 25%pre- β " phase, 25%GP phase, 40% β " mutually with 10% β
Phase is quickly heated with the rate of heat addition of 45-55 DEG C/s, and plate is made to be rapidly heated to target temperature (TT)。
Forming temperature (the T of step 3F) the present embodiment be 300-325 DEG C.
The average rate of temperature fall of step 5 is 80 DEG C/s, and the dwell time was at 2 seconds.
After taking above-mentioned measure, the entire production cycle was shortened within 10 seconds.Compared with traditional drop stamping technique, production week
Phase shortens 98%.Fig. 2 shows that traditional hot forming and data are directed to the technics comparing figure of shape.
Other steps are same as the specific embodiment one.
Specific embodiment 3: illustrating present embodiment below with reference to Fig. 1, Fig. 2 and Fig. 4.Present embodiment and tool
One difference of body embodiment is that the thin-walled sheet metal part material in present embodiment is super-high strength steel, sheet thickness 2mm.
Formation of parts is " u "-shaped component.
For information provided by user 1 and 2, required according to the specific microstructure that data are oriented to method acquisition and optimal
The forming parameters of change are as follows:
Experimental verification is carried out using the part of user 1 in present embodiment.
Step 2 select super-high strength steel microstructure contain 87% martensite, 12% ferrite and 1% Ovshinsky
Body is quickly heated with the rate of heat addition of 55-65 DEG C/s, and plate is made to be rapidly heated to target temperature (TT)。
Forming temperature (the T of step 3F) the present embodiment be 425-450 DEG C.
The dwell time of step 5 was at 5 seconds.
After taking above-mentioned measure, the entire production cycle was shortened within 12 seconds.Compared with traditional drop stamping technique, production week
Phase shortens 97%.Fig. 2 shows that traditional hot forming and data are directed to the technics comparing figure of shape.
Other steps are same as the specific embodiment one.
Specific embodiment 4: illustrating present embodiment below with reference to Fig. 1, Fig. 2 and Fig. 5.Present embodiment and tool
One difference of body embodiment is that the thin-walled sheet metal part material in present embodiment selects TC4 titanium alloy material, and plate is thick
Degree is 2mm.Formation of parts is to reinforce rib component.
For information provided by user 1 and 2, required according to the specific microstructure that data are oriented to method acquisition and optimal
The forming parameters of change are as follows:
Experimental verification is carried out using the part of user 1 in present embodiment.
Step 2 selects the microstructure of TC4 titanium alloy to contain 50% β phase and 50% α phase, with the heating of 50-60 DEG C/s
Rate is quickly heated, and plate is made to be rapidly heated to target temperature (TT)。
Forming temperature (the T of step 3F) the present embodiment be 725-750 DEG C.
The dwell time of step 5 was at 6 seconds.
After taking above-mentioned measure, the entire production cycle was shortened within 13 seconds.Compared with traditional drop stamping technique, production week
Phase shortens 96%.Fig. 2 shows that traditional hot forming and data are directed to the technics comparing figure of shape.
Other steps are same as the specific embodiment one.
Specific embodiment 5: present embodiment and one difference of specific embodiment are described in present embodiment
The rate of heat addition of metal blank is within the scope of 40-60 DEG C/s.
Specific embodiment 6: present embodiment and one difference of specific embodiment are described in present embodiment
The rate of heat addition of metal blank is within the scope of 60-80 DEG C/s.
Specific embodiment 7: present embodiment and one difference of specific embodiment are described in present embodiment
The rate of heat addition of metal blank is within the scope of 80-1000 DEG C/s.
Specific embodiment 8: present embodiment and one difference of specific embodiment are described in present embodiment
The rate of heat addition of metal blank is within the scope of 100-120 DEG C/s.
Specific embodiment 9: present embodiment and one difference of specific embodiment are described in present embodiment
The rate of heat addition of metal blank is within the scope of 120-140 DEG C/s.
Specific embodiment 10: present embodiment and one difference of specific embodiment are described in present embodiment
The rate of heat addition of metal blank is within the scope of 140-160 DEG C/s.
Specific embodiment 11: present embodiment and one difference of specific embodiment are described in present embodiment
Metal blank the rate of heat addition within the scope of 160-180 DEG C/s.
Specific embodiment 12: present embodiment and one difference of specific embodiment are described in present embodiment
Metal blank the rate of heat addition within the scope of 180-200 DEG C/s.
Specific embodiment 13: present embodiment and one difference of specific embodiment are described in present embodiment
Critical hardening rate can determine by the following method: test and compare under different quenching rates, the items of drip molding
Performance guarantees that drip molding meets the requirement of user.
Claims (10)
1. a kind of take data as the method for guiding manufacture lightweight thin-walled sheet metal part, it is characterised in that: the method includes
Following steps:
Step 1: metal blank database includes each metal blank crystal phase in advance experiments verify that obtaining metal blank database
And its forming parameter of corresponding optimization；
Step 2: being analyzed in the method that data are oriented to the data demand of user according to metal blank database, selection is closed
The suitable original metal plate containing specific microstructure；
Wherein, the data demand of user include baking finish process, Element Design, in manufacturing process metal blank plastic strain amount with
And the performance requirement after forming；Data guiding refers to the initial gold for calculating by metal blank database and containing specific microstructure
Belong to the process of plate；
Step 3: the original metal plate containing specific microstructure according to selection is examined in metal blank database
Rope obtains the forming parameter optimized accordingly；
The processing and manufacturing of following steps is carried out according to the forming parameter of acquisition；
Step 4: the metal blank containing specific microstructure, which is heated rapidly to target temperature, obtains thermometal plate；
Step 5: thermometal plate is quickly transferred in cold mold, and guarantee the temperature after metal blank is transferred to cold mold
Not less than its forming temperature；
Step 6: the metal sheet stamping in cold mold is shaped, drip molding is obtained；
Step 7: drip molding to be carried out to quenching simultaneously pressure maintaining in a mold, quenching rate is not less than critical hardening rate.
2. it is according to claim 1 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, feature
Be: in the step one, forming technological parameter includes: the rate of heat addition, target temperature, forming temperature, metal blank
Transfer time, plate mobile cooling rate, critical hardening rate, mold dwell time.
3. it is according to claim 1 or 2 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, it is special
Sign is: in the step one, the rate of heat addition of the metal blank is within the scope of 15-200 DEG C/s.
4. it is according to claim 3 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, feature
It is: in the step one, the target temperature (TT) calculation formula are as follows:
Target temperature (TT)=forming temperature (TF)+metal blank transfer time (s) * metal blank mobile cooling rate (DEG C/s)；
Wherein, metal blank transfer time refers to, metal blank from heating equipment to the transfer time of the cold mold for forming,
It determines by the following method: passing through test of many times and record the cooling taken out and be placed in air in the slave heating equipment of plate
Journey, so that it is determined that passing time of the metal blank from heating equipment to shaping dies.
5. it is according to claim 1,2 or 4 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method,
Be characterized in that: in the step one, the metal blank mobile cooling rate is prepared by the following:
Metal blank is collected in the temperature change of moving process by thermocouple, draws the time changing curve figure of temperature, it will be bent
The slope of line is as mobile cooling rate.
6. it is according to claim 5 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, feature
Be: in the step one, the metal blank is one in super-high strength steel, high strength alumin ium alloy and titanium alloy material
Kind.
7. according to claim 1, described in 2,4 or 6 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method,
It is characterized by: selecting the step of suitably containing the original metal plate of specific microstructure in the step two, passing through
Confirm after transmission electron microscope observation, the matched specific microstructure requirement of the method to meet data guiding.
8. it is according to claim 7 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, feature
It is: requires data for user performance are as follows: thin-walled sheet metal part material is AA6082 aluminum alloy materials, and sheet thickness is
2mm, formation of parts are " u "-shaped component；The specific microstructure determined based on data guiding method are as follows: 25%pre- β " phase, 25%
GP phase, 40% β " mutually with 10% β phase；The forming parameters determined based on data guiding method are as follows: 45-55 DEG C of the rate of heat addition/s,
300-325 DEG C of forming temperature, mold dwell time: 2s, average rate of temperature fall are 80 DEG C/s.
9. it is according to claim 7 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, feature
It is: requires data for user performance are as follows: thin-walled sheet metal part material is super-high strength steel, sheet thickness 2mm, formation of parts
For " u "-shaped component；The microstructure of super-high strength steel is selected to contain 87% martensite, 12% ferrite and 1% austenite, with
The rate of heat addition of 55-65 DEG C/s is quickly heated, and plate is made to be rapidly heated to target temperature (TT)；Forming temperature (TF) be
425-450℃；Dwell time is 5 seconds.
10. it is according to claim 7 it is a kind of with data be guiding manufacture lightweight thin-walled sheet metal part method, feature
It is, requires data for user performance are as follows: thin-walled sheet metal part material selection TC4 titanium alloy material, sheet thickness 2mm,
Formation of parts is to reinforce rib component；The microstructure of TC4 titanium alloy is selected to contain 50% β phase and 50% α phase, with 50-60 DEG C/s
The rate of heat addition quickly heated, so that plate is rapidly heated to target temperature (TT)；Forming temperature (TF) it is 725-750 DEG C；It protects
Pressing the time is 6 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786108.0A CN110465573B (en) | 2019-08-23 | 2019-08-23 | Method for manufacturing lightweight thin-wall sheet metal part by taking data as guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786108.0A CN110465573B (en) | 2019-08-23 | 2019-08-23 | Method for manufacturing lightweight thin-wall sheet metal part by taking data as guide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110465573A true CN110465573A (en) | 2019-11-19 |
| CN110465573B CN110465573B (en) | 2020-12-29 |
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| CN112906276A (en) * | 2021-03-02 | 2021-06-04 | 上海博汇模具有限公司 | Die profile temperature analysis method based on database |
| CN113458241A (en) * | 2021-05-15 | 2021-10-01 | 黑龙江省科学院智能制造研究所 | A stamping equipment for aluminum alloy ex-trusions |
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