CN112572615B - Hot forming component integrating tailor welded blank and patch panel and preparation method thereof - Google Patents
Hot forming component integrating tailor welded blank and patch panel and preparation method thereof Download PDFInfo
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- CN112572615B CN112572615B CN202011330264.5A CN202011330264A CN112572615B CN 112572615 B CN112572615 B CN 112572615B CN 202011330264 A CN202011330264 A CN 202011330264A CN 112572615 B CN112572615 B CN 112572615B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
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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
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention discloses a hot forming part integrating a tailor-welded blank and a patch board and a preparation method thereof, wherein the preparation method comprises the following steps: the steel plate comprises a first coating steel plate and a second coating steel plate, wherein the first coating steel plate and the second coating steel plate are welded to form a tailor-welded blank; a patch plate which is a steel plate coated with a coating on the surface; and the patch board and the tailor-welded board are welded into a whole, and then the hot-forming part integrating the tailor-welded board and the patch board is obtained through hot stamping and forming. The invention provides a composite process of a tailor-welded blank and a patch plate, which can weld plates with different thicknesses together according to the strength requirement, weld the patch plate on the part with higher local strength requirement, and punch and form by a hot stamping die after all welding is finished. The customized requirements on the strength of parts can be met, the die tooling can be saved, and the processing procedures can be reduced.
Description
Technical Field
The invention relates to the technical field of thermoforming. More particularly, the present invention relates to a thermoformed component that integrates a tailor welded blank and a patch panel and a method of making the same.
Background
Safety is an important automotive performance index, but when the strength of a steel plate reaches 1500MPa, the steel plate can hardly be formed by a cold stamping process. In order to achieve the required strength, under the conventional cold stamping process, a thicker steel plate or more reinforcing plates are often required to be welded with the main steel plate, but the market calls for the light weight of the vehicle are also higher and higher. The thermal forming process can well solve the contradiction between the safety and the light weight of the vehicle. The hot forming process is that high-strength steel or ultrahigh-strength steel is heated to a certain temperature and then sent into a hot stamping die for stamping forming, and then is rapidly cooled, so that the tensile strength of the finally obtained material is greatly improved. Therefore, the hot forming process is widely applied to the condition of ensuring and even improving the mechanical property and the collision strength of the parts on the premise of reducing the weight of the parts.
On the other hand, different parts of the vehicle have different requirements on strength, the crush zone needs to be deformed to a certain extent to absorb energy in collision, and the passenger compartment protection zone should not be deformed too much to ensure the living space of passengers, so that customized strength needs to be provided according to actual requirements. In the existing thermal forming process, the plate splicing and welding technology can weld plates with different thicknesses together and perform hot stamping forming, and the technology can splice the plates randomly according to the strength requirement, so that the flexibility is high; the patch plate technology is mainly used for parts needing local strength reinforcement. However, in practical application, the two technologies are usually used separately, and after the required products are obtained respectively, assembly welding is performed through a welding technology, so that a lot of tools are developed, a lot of production processes are needed, cost is wasted, and after parts are formed and welded, due to the influence of surface impurities such as a plating layer, quality problems such as insufficient welding and unqualified welding strength easily occur. Therefore, it is necessary to develop a hot-formed part, which can meet the requirement of customized strength as required with a certain flexibility, save the die tooling, reduce the processing procedures, and ensure the process quality.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a thermoformed part integrating a tailor welded blank and a patch panel, comprising: the steel plate comprises a first coating steel plate and a second coating steel plate, wherein the first coating steel plate and the second coating steel plate are welded to form a tailor-welded blank; a patch plate which is a steel plate coated with a coating on the surface; the patch board and the tailor-welded blank are welded into a whole and then formed by hot stamping.
Preferably, the first plated steel sheet and the second plated steel sheet form the tailor-welded blank by laser welding, and the patch sheet covers a weld of the tailor-welded blank.
Preferably, the thermoforming part of welding plate and patch board is pieced together to the integration, the patch board with piece together the welding plate and pass through suspension point welded connection, the welding point during welding apart from the distance of welding seam is greater than 12mm, just the welding point is greater than 10mm apart from waiting to shape the fillet position.
Preferably, the first plated steel sheet, the second plated steel sheet, and the patch sheet are silicon-aluminum plated steel sheets.
The object of the invention is further achieved by a method for producing a thermoformed part integrating a tailor welded blank and a patch panel, comprising the steps of:
s1, fixing the first plated steel plate and the second plated steel plate on a laser tailor-welding machine;
s2, welding the first plated steel plate and the second plated steel plate together through the laser tailor-welding machine to obtain a tailor-welded blank;
s3, fixing the tailor welded blank on a suspension spot welding machine;
s4, fixing the patch board on the tailor-welded blank;
s5, welding the tailor-welded blank and the patch plate together by using the suspension spot welding machine to obtain a plate material to be punched, wherein the tailor-welded blank and the patch plate are integrated;
and S6, heating the plate material of the integrated tailor-welded blank and the patch plate, and then sending the plate material into a hot stamping die for molding to obtain the hot forming part of the integrated tailor-welded blank and the patch plate.
Preferably, in the method for manufacturing a thermoformed component integrating a tailor welded blank and a patch panel, the hot stamping die in step S6 includes:
the upper die comprises an upper die material core and upper die steel blocks arranged on two sides of the upper die material core, and the upper die is arranged on an upper die base; the upper die steel block comprises a plurality of sub upper die steel blocks, and the sub upper die steel blocks are distributed along the length direction of the plate to be punched of the integrated tailor-welded blank and the patch board.
The lower die comprises a lower die insert and lower die material pressing cores arranged on two sides of the lower die insert, and the lower die is arranged on a lower die base;
and the adjusting blocks are arranged between the sub upper die steel block and the upper die base so as to adjust the die gap between the upper die and the lower die.
Preferably, in the method for manufacturing the hot forming part of the integrated tailor-welded blank and the patch panel, the height of the die gap is 1.1 to 1.2 times of the thickness of the plate material to be punched of the integrated tailor-welded blank and the patch panel.
Preferably, the method for preparing the hot forming part integrating the tailor-welded blank and the patch panel is characterized in that a cooling channel is arranged on the hot stamping die, and the cooling channel comprises a plurality of small-aperture cooling channels and a plurality of large-aperture cooling channels; the distance between the cooling channel and the contact surface of the hot stamping die and the plate to be stamped of the integrated tailor-welded blank and the patch plate is not less than 10-12 mm.
Preferably, the method for manufacturing the hot-formed part integrating the tailor welded blank and the patch plate is characterized in that the diameter of the small-aperture cooling channel is 6mm, and the diameter of the large-aperture cooling channel is 12 mm.
The invention at least comprises the following beneficial effects:
1. the invention provides a composite process of a tailor-welded blank and a patch plate, which can weld plates with different thicknesses together according to the strength requirement, weld the patch plate on the part with higher local strength requirement, and punch and form by a hot stamping die after all welding is finished. And the part is formed by one-time hot stamping, so that the customized requirement on the strength of the part can be met, the die tooling can be saved, and the processing procedures can be reduced. Compared with the conventional process of firstly hot stamping and then welding the plates together, the invention can also reduce the occurrence of insufficient welding caused by the influence of hot forming on the surface coating of the plates and improve the welding strength.
2. According to the invention, the distance between the welding point position of the patch plate and the welding line of the tailor-welded blank and the distance between the welding point position of the patch plate and the violent material flowing part during hot stamping forming are set, so that the problem that the welding line is easy to crack due to the fact that the material thickness of the welding line is thickened because the patch plate covers the welding line of the tailor-welded blank is solved.
3. The invention overcomes the contradiction that the tailor-welded blank needs a larger die gap to allow the flow of the welding seam in the forming process and the patch board needs a smaller die gap to ensure the formed welding strength by reasonably setting the die gap of the hot stamping die. And the setting of the adjusting block in the hot stamping die is used for ensuring that the die clearance at different thicknesses of the plate to be stamped is always kept in a set range.
4. The invention further adds the large-aperture cooling channel on the basis of the conventional single-diameter cooling channel of the hot stamping die so as to solve the risk of unqualified mechanical properties of parts caused by the increase of the material thickness of the patch plate area and the increase of the heating time.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of a tailor welded blank according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a patch panel according to the above embodiment of the present invention;
fig. 3 is a schematic structural diagram of a plate to be punched of the integrated tailor-welded blank and the patch blank in the above embodiment of the present invention;
FIG. 4 is a front view of the hot stamping die according to the above embodiment of the present invention;
FIG. 5 is a right side view of the hot stamping die according to the above embodiment of the present invention;
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the present invention provides a thermoformed part integrating a tailor welded blank and a patch panel, comprising:
the steel plate comprises a first plated steel plate 11 and a second plated steel plate 12, wherein the first plated steel plate 11 and the second plated steel plate 12 are welded to form a tailor-welded blank 1;
a patch plate 2 which is a steel plate coated with a coating on the surface; the patch board 2 and the tailor-welded blank 1 are welded into a whole and then formed by hot stamping.
In this embodiment, the shapes, sizes, thicknesses, and materials of the first and second plated steel plates 11 and 12 and the patch plate 2 may be different, and for example, the first and second plated steel plates 11 and 12 and the patch plate 2 may be 22MnB5 steel or 6Mn6 steel with different thicknesses and shapes, respectively. First cladding material steel sheet 11 and the welding of second cladding material steel sheet 12 form and piece together welded plate 1, piece together welded plate 1 with patch board 2 welds as an organic whole again, later through hot stamping forming, has solved among the current technology, and various sheet materials are together always welded after thermal forming earlier, because the influence of surface impurity such as cladding material behind the hot stamping technology, appear the problem of rosin joint easily, have guaranteed welding quality. And because only one hot stamping process is needed, the number of processes of die tool development and sheet material deformation is reduced, thereby improving the generation efficiency and saving the production cost. Therefore, the automobile light weight requirement is met, and meanwhile, the tailor-made strength processing technology with flexibility and local strength enhancement is provided by combining the tailor-welded plate technology and the patch plate technology.
In another embodiment, in the thermoformed component integrating the tailor welded blank and the patch panel, the first plated steel sheet 11 and the second plated steel sheet 12 are formed into the tailor welded blank 1 by laser welding, and the patch panel 2 covers the weld seam 3 of the tailor welded blank. The laser welding can obtain high-quality joint strength and a large depth-to-width ratio, and the welding speed is high. The laser welding process can be used for welding plates of different materials and thicknesses, and the components or tissues of a welding seam area are changed through filler wire welding, or a synchronous heating effect is added in the laser welding process, so that the hardness of a joint part can be reduced, and cracks are prevented.
In another embodiment, the hot forming component integrating the tailor-welded blank and the patch panel is characterized in that the patch panel 2 and the tailor-welded blank 1 are connected by suspension welding, the distance between a welding point 4 and the welding line 3 during welding is greater than 12mm, and the distance between the welding point and the position of a fillet to be formed is greater than 10 mm. Because the size of the patch plate 2 covers the welding seam 3 of the tailor-welded blank 1, suspension point welding is adopted to control the position of the welding seam 4, so that the welding seam 4 is ensured to have a certain distance from the welding seam 3, the welding seam 3 can flow in the thermal forming process, and the welding seam 4 is enabled to avoid the position where the material flows violently in the thermal forming process, such as the position of a fillet to be formed, so that the welding strength after thermal forming is ensured.
In another embodiment, in the hot-formed component integrating the tailor welded blank and the patch panel, the first plated steel sheet 11, the second plated steel sheet 12 and the patch panel 2 are silicon-aluminum plated steel sheets. Under the condition of austenitizing, the high-strength steel quickly forms an oxide film after contacting with air. In order to prevent the surface of the plate from being oxidized in the hot stamping forming process, and because the silicon-aluminum coating has higher high-temperature oxidation resistance and corrosion resistance, the first coating steel plate 11, the second coating steel plate 12 and the patch plate 2 are made of silicon-aluminum coating steel plates, and the aluminum content in the silicon-aluminum coating is 90% and the silicon content is 10%.
A method of making a thermoformed component incorporating a tailor welded blank and a patch panel, the method comprising the steps of:
s1, fixing the first plated steel plate 11 and the second plated steel plate 12 on a laser tailor-welding machine;
s2, welding the first plated steel plate 11 and the second plated steel plate 12 together through the laser tailor-welding machine to obtain the tailor-welded blank 1;
s3, fixing the tailor-welded blank 1 on a suspension spot welding machine;
s4, fixing the patch board 2 on the tailor-welded blank;
s5, welding the tailor-welded blank 1 and the patch plate 2 together by using the suspension spot welding machine to obtain a to-be-punched plate 5 integrating the tailor-welded blank and the patch plate;
and S6, heating the plate material 5 to be punched of the integrated tailor-welded blank and the patch plate, and then sending the heated plate material into a hot stamping die for molding to obtain the hot-molded part of the integrated tailor-welded blank and the patch plate.
In another embodiment, in the method for preparing a thermoformed component integrating a tailor welded blank and a patch blank, the hot stamping die in step S6 includes:
the upper die 6 comprises an upper die material core 62 and upper die steel blocks 61 arranged on two sides of the upper die material core 62, and the upper die 6 is arranged on the upper die base 12; the upper die steel block 61 comprises a plurality of sub upper die steel blocks 611, and the sub upper die steel blocks 611 are distributed along the length direction of the plate 5 to be punched of the integrated tailor-welded blank and the patch plate.
The lower die 8 comprises a lower die insert 82 and lower die material pressing cores 81 arranged on two sides of the lower die insert 82, and the lower die 8 is arranged on the lower die base 9;
and a plurality of adjusting blocks 7 installed between the sub upper die steel block 611 and the upper die base 12 to adjust a die gap between the upper die 6 and the lower die 8.
In this technical solution, the upper die core 62 corresponds to the lower die insert 82 in position up and down, and the upper die steel block 61 corresponds to the lower die core 81 in position up and down. In the stamping process, firstly, the upper die pressing core 62 presses the middle area of the to-be-stamped plate 5 of the integrated tailor-welded blank and the patch plate, and then the upper die steel blocks 61 on the two sides of the upper die pressing core 62 press the two sides of the to-be-stamped plate 5 of the integrated tailor-welded blank and the patch plate downwards until the two sides are respectively contacted with the lower die pressing cores 81 on the two sides of the lower die insert 82, so that the forming process is completed.
In another embodiment, in the method for manufacturing the hot forming part of the integrated tailor-welded blank and the patch panel, the height of the die gap is 1.1 to 1.2 times of the thickness of the blank 5 to be punched of the integrated tailor-welded blank and the patch panel. In the technical scheme, on one hand, in order to ensure the welding strength of the formed patch plate 2, the die gap is generally required to be adjusted to approach the material thickness of the plate to be punched; on the other hand, the requirement of the welding seam 3 of the tailor-welded blank on the die gap is 1.25-1.5 times of the thickness of the blank to be punched, so that a certain feeding gap is reserved. Therefore, in order to meet the respective requirements of the two processes, the die clearance control is set to be 1.1-1.2 times of the thickness of the plate 5 to be punched of the integrated tailor-welded blank and the patch plate. And because the plate 5 to be punched of the integrated tailor-welded blank and the patch plate is formed by welding the tailor-welded blank 1 and the patch plate 2 with different thicknesses, the plate 5 to be punched of the integrated tailor-welded blank and the patch plate is not equal in thickness, and therefore the corresponding die gap is not a fixed value. In the technical scheme, the upper die steel block 61 is composed of a plurality of sub upper die steel blocks 611, and the adjusting blocks 7 with different thicknesses are added between the sub upper die steel blocks 611 and the upper die base 12 to adjust the die gap between the upper die 6 and the lower die 8, so that the die gap can be kept at 1.1-1.2 times of the thickness of the integrated tailor-welded blank and the patch panel at different thicknesses of the blank to be punched.
In another embodiment, the method for preparing the hot forming part integrating the tailor-welded blank and the patch panel is characterized in that a cooling channel is arranged on the hot stamping die, and the cooling channel comprises a plurality of small-aperture cooling channels 11 and a plurality of large-aperture cooling channels 10; the distance between the cooling channel and the contact surface of the hot stamping die and the plate to be stamped of the integrated tailor-welded blank and the patch plate is not less than 10-12 mm. And quenching can be realized after the plate 5 to be punched of the integrated tailor-welded blank and the patch plate is formed only by fully cooling the die after hot stamping. However, due to the adoption of the composite process of the tailor welded blank and the patch plate, the thickness of the blank in the overlapping area of the tailor welded blank and the patch plate is increased, which leads to the increase of the heating time before hot stamping, and therefore, the cooling rate in the hot stamping process needs to be further increased. In the technical scheme, a large-aperture cooling channel is added on the basis of a conventional cooling pipeline, the heat conduction between the plate 5 to be punched of the integrated tailor-welded blank and the patch plate and a hot stamping die in the hot forming process is accelerated in a mode of increasing the cooling area, and the cooling rate is accelerated.
In another embodiment, the method for preparing the hot-formed part integrating the tailor welded blank and the patch plate is characterized in that the diameter of the small-aperture cooling channel 11 is 6mm, and the diameter of the large-aperture cooling channel 10 is 12 mm.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (4)
1. A method for preparing a thermoformed component integrating a tailor welded blank and a patch panel, comprising the steps of:
s1, fixing the first plated steel plate and the second plated steel plate on a laser tailor-welding machine;
s2, welding the first plated steel plate and the second plated steel plate together through the laser tailor-welding machine to obtain a tailor-welded blank;
s3, fixing the tailor welded blank on a suspension spot welding machine;
s4, fixing the patch board on the tailor-welded blank;
s5, welding the tailor-welded blank and the patch plate together by using the suspension spot welding machine, wherein the patch plate covers the welding seam of the tailor-welded blank, the distance between the welding spot during welding and the welding seam is more than 12mm, and the distance between the welding spot and the position of a fillet to be formed is more than 10mm, so that a plate to be punched of the integrated tailor-welded blank and the patch plate is obtained;
s6, heating the plate material to be punched of the integrated tailor-welded blank and the patch plate, and then sending the heated plate material into a hot stamping die for molding to obtain a hot molding part of the integrated tailor-welded blank and the patch plate;
the hot stamping die in the step S6 includes:
the upper die comprises an upper die material core and upper die steel blocks arranged on two sides of the upper die material core, and the upper die is arranged on an upper die base; the upper die steel blocks comprise a plurality of sub upper die steel blocks, and the sub upper die steel blocks are distributed along the length direction of the plate to be punched of the integrated tailor-welded blank and the patch board;
the lower die comprises a lower die insert and lower die material pressing cores arranged on two sides of the lower die insert, and the lower die is arranged on a lower die base;
and the adjusting blocks are arranged between the sub upper die steel block and the upper die base so as to adjust the die gap between the upper die and the lower die.
2. The method of making a thermoformed component incorporating a tailor welded blank and a patch panel as claimed in claim 1, wherein said die gap height is 1.1-1.2 times the thickness of the blank to be stamped of said integrated tailor welded blank and patch panel.
3. The method of making a thermoformed component incorporating a tailor welded blank and a patch panel as claimed in claim 1, wherein said hot stamping die is provided with cooling channels, said cooling channels comprising a plurality of small-bore cooling channels and a plurality of large-bore cooling channels; the distance between the cooling channel and the contact surface of the hot stamping die and the plate to be stamped of the integrated tailor-welded blank and the patch plate is not less than 10-12 mm.
4. A method of making a thermoformed component incorporating a tailor welded blank and a patch panel as claimed in claim 3 wherein said small bore cooling channel has a diameter of 6mm and said large bore cooling channel has a diameter of 12 mm.
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| CN113664470B (en) * | 2021-08-20 | 2023-05-16 | 岚图汽车科技有限公司 | Thermoforming integral door ring based on laser splice welded plate and patch plate and preparation method thereof |
| CN114952185A (en) * | 2022-04-22 | 2022-08-30 | 一汽解放汽车有限公司 | Forming method of side wall reinforcement |
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Address after: 430056 No. n3010, 3rd floor, R & D building, building n, Artificial Intelligence Science Park, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee after: Lantu Automobile Technology Co.,Ltd. Patentee after: Dongshi (Wuhan) Industrial Co.,Ltd. Address before: 430056 No. n3010, 3rd floor, R & D building, building n, Artificial Intelligence Science Park, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee before: Lantu Automobile Technology Co.,Ltd. Patentee before: DONGFENG (WUHAN) INDUSTRIAL Co.,Ltd. |