CN115555478A - Hot stamping die and manufacturing method thereof - Google Patents

Hot stamping die and manufacturing method thereof Download PDF

Info

Publication number
CN115555478A
CN115555478A CN202211115053.9A CN202211115053A CN115555478A CN 115555478 A CN115555478 A CN 115555478A CN 202211115053 A CN202211115053 A CN 202211115053A CN 115555478 A CN115555478 A CN 115555478A
Authority
CN
China
Prior art keywords
cooling water
hot stamping
die
water channel
stamping die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211115053.9A
Other languages
Chinese (zh)
Inventor
马闻宇
李学涛
郑学斌
王宝川
姚野
郝玉林
刘永壮
胡开广
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shougang Group Co Ltd
Original Assignee
Shougang Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shougang Group Co Ltd filed Critical Shougang Group Co Ltd
Priority to CN202211115053.9A priority Critical patent/CN115555478A/en
Publication of CN115555478A publication Critical patent/CN115555478A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21D37/10—Die sets; Pillar guides
    • 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
    • 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
    • B21D37/20—Making tools by operations not covered by a single other subclass

Abstract

The invention relates to the technical field of hot stamping of hot forming steel, in particular to a hot stamping die and a manufacturing method thereof. The water cooling system has been seted up in this hot stamping die, the water cooling system is close to hot stamping die's die face setting, the water cooling system includes many cooling water channels that the interval set up, the die face includes the first working face that sets up with the lateral wall cooperation of part, the cooling water channel that is close to first working face setting is configured into first cooling water channel, set up the water spray unit with first cooling water channel one-to-one setting on the first working face, water spray unit and the first cooling water channel intercommunication that corresponds, with the cooling water in the first cooling water channel that the blowout corresponds. According to the hot stamping die and the manufacturing method thereof, water quenching on the side wall of the part is realized, so that the martensite at the side wall of the part is fully transformed, and the uniform performance of the part is ensured.

Description

Hot stamping die and manufacturing method thereof
Technical Field
The invention relates to the technical field of hot stamping of hot forming steel, in particular to a hot stamping die and a manufacturing method thereof.
Background
The hot stamping technology is an important mode for realizing light weight of an automobile, and the application of the hot forming steel can improve the strength of automobile parts and reduce the thickness of the automobile parts. However, the hot stamping technology also has certain defects, such as the problem of uneven performance of parts after hot stamping. The reason why the hot-formed steel has high strength after hot stamping is that the austenitized structure in the part is transformed into a martensitic structure in the quenching stage of the hot stamping die in the hot stamping process. The condition required to achieve this transition is that the cooling rate of the part is of a certain value, which typically needs to be no less than 27 ℃/s. In the pressure maintaining, cooling and quenching stage of the hot stamping die, the side wall of the part cannot be pressed down at the side wall of the hot stamping die due to the gap of the hot stamping die, so that the temperature drop rate at the side wall of the part is low, the martensite transformation at the side wall of the part is insufficient compared with other parts, and the performance of the part is uneven especially for parts with steep side walls.
Disclosure of Invention
The application provides a hot stamping die and a manufacturing method thereof, which solve the technical problem that the martensite transformation at the side wall of a part is insufficient in the prior art, so that the performance of the part is not uniform.
On the one hand, this application provides a hot stamping die for the hot stamping of part takes shape, water cooling system has been seted up in the hot stamping die, water cooling system is close to hot stamping die's die face sets up, water cooling system includes many cooling water channels that the interval set up, the die face include with the first working face that the lateral wall cooperation of part set up is close to the cooling water channel that first working face set up is configured into first cooling water channel, set up on the first working face with the water spray unit that first cooling water channel one-to-one set up, the water spray unit includes a plurality of hole for water sprayings, and is a plurality of the hole for water sprayings and the first cooling water channel intercommunication of corresponding, correspond with the blowout cooling water in the first cooling water channel.
In some embodiments, the cooling water channel is arranged obliquely, and the distance between the top of the pipe wall at the outlet of the cooling water channel and the corresponding die surface is smaller than the distance between the top of the pipe wall at the inlet of the cooling water channel and the corresponding die surface.
In some embodiments, a plurality of the cooling channels are arranged in parallel.
In some embodiments, the cooling water channel has a diameter of 8 to 14mm.
In some embodiments, the die face of the hot stamping die includes two first working faces which are arranged oppositely, the die face of the hot stamping die further includes a second working face which is arranged in a matched manner with the bottom of the part and two third working faces which are arranged in a matched manner with the blank pressing position of the part, the second working face is arranged between the bottoms of the two first working faces, the two third working faces are respectively arranged at the tops of the two first working faces, and the third working face is arranged on one side of the first working face, which deviates from the second working face.
In some embodiments, the water spray unit includes a plurality of water spray holes arranged side by side, the water spray holes are communicated with the corresponding first cooling water channel, and the plurality of water spray holes are arranged at intervals along the length direction of the corresponding cooling water channel.
In some embodiments, the diameter of the water jet is 1-5mm.
In some embodiments, the water spray unit is disposed on a side of the corresponding first cooling water channel adjacent to the second working surface.
On the other hand, an embodiment of the present application provides a method for manufacturing a hot stamping die, where the method is the above method for manufacturing a hot stamping die, and includes:
s1: designing a die surface of the hot stamping die to enable the die surface to be matched with the outer contour of a target part;
s2: designing a plurality of cooling water channels along the die surface, so that the local temperature of the part corresponding to the inlet of each cooling water channel is the same as the local temperature of the part corresponding to the outlet of each cooling water channel;
s3: arranging water spraying units which are arranged in one-to-one correspondence to and communicated with the first cooling water channels on the first working surface to obtain a design model of the hot stamping die;
s4: and performing real object processing according to the design model of the hot stamping die.
In some embodiments, step S2 specifically includes:
s21: a plurality of cooling water channels are designed along the mould surface to form a water cooling system, and the distance between the top of the pipe wall at the inlet of the cooling water channel and the corresponding mould surface is the same as the distance between the top of the pipe wall at the outlet of the cooling water channel and the corresponding mould surface;
s22: carrying out simulation numerical simulation on the pressure maintaining process of the water cooling system to obtain the local temperature T of the part corresponding to the inlet of the cooling water channel 1 And the local temperature T of said part corresponding to the outlet 2 ，T 2 ＞T 1 ；
S23: obtaining the distance D between the top of the pipe wall at the inlet of the cooling water channel and the corresponding die surface in the step S21 1 And obtaining a corrected distance D between the top of the pipe wall at the outlet of the cooling water channel and the corresponding die surface according to the formula 1) 2 The formula 1) is:
Figure BDA0003845081600000031
in the formula 1): a is a correction coefficient, and A is more than 0 and less than 1;
s24: according to D obtained in step S23 2 The value of (d) is corrected for the distance between the top of the tube wall at the outlet of the cooling water channel and the corresponding die face in step S21.
The beneficial effect of this application is as follows:
the application provides a hot stamping die and manufacturing method thereof, because set up the water spray unit on the hot stamping die on being used for the first working face that sets up with the cooperation of part lateral wall, the cooling water in the first cooling water course that the water spray unit can jet out the correspondence, therefore, when the part in pressurize in-process with hot stamping die pressfitting, when the lateral wall of part sets up with the cooperation of hot stamping die's first working face, the cooling water injection in the first cooling water course that the water spray unit will correspond is on the part lateral wall, realize the water quenching to the part lateral wall, the cooling effect and the efficiency of water quenching all obviously are superior to the mould and quench, thereby the martensite of part lateral wall department fully changes, ensure that the part performance is even, and the cooling efficiency of water quenching also is superior to the mould quenching, consequently, part lateral wall department can accomplish the martensite before other positions and change, consequently, the quenching time no longer receives the restriction of lateral wall department martensite transformation degree, thereby can improve quenching efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a perspective view of a hot stamping die according to the present embodiment;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of a cooling waterway prior to modification;
FIG. 4 is a schematic view of a modified cooling channel.
Description of reference numerals:
100-hot stamping die, 110-water cooling system, 111-cooling water channel, 1111-inlet, 1112-outlet, 1113-first cooling water channel, 120-die surface, 121-first working surface, 122-second working surface, 123-third working surface, 130-water spray unit, and 131-water spray hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The traditional hot stamping process is mainly divided into the following steps: 1. carrying out austenitizing heat treatment on the plate: putting the plate into a heating furnace for austenitizing heat treatment, wherein the heating temperature range of the austenitizing heat treatment is usually 880-950 ℃, the austenitizing heat preservation time is usually 3-8min, and after the austenitizing heat treatment, the plate tissue is converted into an austenite tissue;
2. carrying out hot stamping forming on the plate: after the austenitic heat treatment is finished, the plate is transferred to a hot stamping die, the die surface of the hot stamping die is matched with the shape of the part, the plate is gradually compacted into a target part by the hot stamping die until the die is closed, and the part is compacted;
3. pressure maintaining and quenching: after the part is compacted, the pressure-maintaining quenching stage is carried out, the obvious temperature drop of the part mainly occurs at the stage, a water cooling system in the hot stamping die carries out cooling on the plate, an austenitizing tissue in the part is converted into a martensite tissue, and the hot stamping is finished.
The water cooling system in the hot stamping die is generally arranged at a position close to a die surface, and in the pressure-maintaining quenching stage, after the outer contour of the part and the die surface of the hot stamping die are compacted, a high cooling rate can be realized on the part, but the side wall of the part is difficult to be compacted by the hot stamping die, so that the martensite transformation at the side wall of the part is insufficient relative to other parts, and the performance of the part is uneven.
Based on this, with reference to fig. 1 to 4, the embodiment of the present application provides a hot stamping die 100 for hot stamping forming of a part. A water cooling system 110 is arranged in the hot stamping die 100, and the water cooling system 110 is used for introducing cooling water in the hot stamping process, so that the temperature of the plate is reduced in the pressure maintaining and quenching stage, and the transformation from the material structure to the martensite is realized; the water cooling system 110 is arranged close to the die surface 120 of the hot stamping die 100, the water cooling system 110 comprises a plurality of cooling water channels 111 which are arranged at intervals, and cooling water can be introduced into each cooling water channel 111; the die surface 120 of the hot stamping die 100 is adapted to an outer contour of the part, wherein the die surface 120 includes a first working surface 121 disposed in cooperation with a side wall of the part, a cooling water channel 111 disposed near the first working surface 121 is configured as a first cooling water channel 1113, a water spraying unit 130 disposed in one-to-one correspondence with the first cooling water channel 1113 is disposed on the first working surface 121, the water spraying unit 130 includes a plurality of water spraying holes 131, and the plurality of water spraying holes 131 are communicated with the corresponding first cooling water channel 1113 to spray cooling water in the corresponding first cooling water channel 1113.
According to the hot stamping die 100 provided by the embodiment of the application, the water spraying unit 130 is arranged on the first working surface 121, which is used for being matched with the side wall of the part, of the hot stamping die 100, and the water spraying unit 130 can spray the cooling water in the corresponding first cooling water channel 1113, so that when the part is pressed with the hot stamping die 100 in the pressure maintaining process, and the side wall of the part is matched with the first working surface 121 of the hot stamping die 100, the water spraying unit 130 sprays the cooling water in the corresponding first cooling water channel 1113 onto the side wall of the part, so that water quenching on the side wall of the part is realized, the cooling effect and the efficiency of the water quenching are both obviously superior to those of die quenching, thereby ensuring that the martensite at the side wall of the part is fully transformed, ensuring that the performance of the part is uniform, and the cooling efficiency of the water quenching is superior to that the martensite is transformed at other positions, so that the quenching time is not limited by the martensite transformation degree at the side wall, and the quenching efficiency can be improved.
Further, the plurality of water injection holes 131 are spaced and arranged side by side along the length direction of the corresponding cooling water passage 111, that is, the cooling water in the first cooling water passage 1113 is injected to the side wall of the part through the plurality of water injection holes 131. The size of the water spray holes 131 needs to be determined through calculation and simulation so as not to cause excessive water spray while ensuring the performance of the side wall of the part, and specifically, the diameter of the water spray holes 131 is 1-5mm in the embodiment.
Each cooling water channel 111 has an inlet 1111 and an outlet 1112, and cooling water enters from the inlet 1111, absorbs heat of the parts, and then exits from the outlet 1112. Because the cooling water absorbs the heat of the parts in the flowing process of the cooling water in the cooling water channels 111, the temperature of the outlet 1112 of each cooling water channel 111 is higher than the temperature of the inlet 1111, and the cooling effects of the cooling water with different temperatures are different, so that the local temperature of the part corresponding to the outlet 1112 of the cooling water channel 111 is higher than the local temperature of the part corresponding to the inlet 1111 of the cooling water channel 111, thereby causing the uneven temperature of the part and affecting the overall performance of the part.
Therefore, in the present embodiment, the cooling water channel 111 is disposed obliquely, and a distance between a top of a pipe wall at the outlet 1112 of the cooling water channel 111 and the corresponding mold surface 120 is smaller than a distance between a top of a pipe wall at the inlet 1111 of the cooling water channel 111 and the corresponding mold surface 120, in other words, a distance between a top of a pipe wall at the outlet 1112 of the cooling water channel 111 and the corresponding local part is smaller than a distance between a top of a pipe wall at the inlet 1111 of the cooling water channel 111 and the corresponding local part. The closer the part of the part to the cooling water channel 111, the better the cooling effect, and the smaller the distance between the top of the 1112 pipe wall at the outlet of the cooling water channel 111 and the corresponding die surface 120 in the embodiment is than that at the inlet 1111, so that the influence caused by the higher temperature of the 1112 cooling water at the outlet of the cooling water channel 111 can be compensated to a certain extent, and the part can be cooled more uniformly.
Furthermore, in the embodiment, the plurality of cooling water channels 111 are arranged in parallel, so that the uniformity of cooling of each part on the part can be further enhanced. Specifically, the diameter of the cooling water channel 111 in the present embodiment may be 8 to 14mm.
As described above, the die surface 120 of the hot stamping die 100 is adapted to the outer contour of the part, specifically, in the embodiment, both sides of the part have side walls, so the die surface 120 of the hot stamping die 100 includes two first working surfaces 121 disposed oppositely, the die surface 120 of the hot stamping die 100 further includes a second working surface 122 disposed in cooperation with the bottom of the part and two third working surfaces 123 disposed in cooperation with the edge pressing portions of the part, the second working surface 122 is disposed between the bottoms of the two first working surfaces 121, the two third working surfaces 123 are disposed at the tops of the two first working surfaces 121, and the third working surface 123 is disposed on one side of the first working surface 121 departing from the second working surface 122.
It should be noted that the other cooling water channels 111 except the first cooling water channel 1113 are kept in a water-flowing state all the time in the whole production process to ensure the temperature and the cooling capacity of the hot stamping die 100 and achieve the cooling effect at the blank pressing position and the bottom of the part, and the first cooling water channel 1113 is only filled with water in the pressure quenching stage to achieve rapid cooling of the side wall of the part.
Further, the water spray units 130 are disposed at a side of the corresponding first cooling water channel 1113 close to the second working surface 122, that is, the water spray units 130 are disposed at a downward position of the corresponding first cooling water channel 1113, so that under the influence of gravity, the spraying effect of the cooling water can be enhanced, and the water quenching effect can be improved.
Based on the same inventive concept, the present application further provides a method for manufacturing a hot stamping die, which is the above method for manufacturing the hot stamping die 100, and includes:
s1: designing a die surface 120 of the hot stamping die 100, so that the die surface 120 is matched with the outer contour of a target part;
the shape of the hot stamping die 100 is preliminarily designed, and the die land 120 of the hot stamping die 100 is obtained according to the shape of the part.
S2: designing a plurality of cooling water channels 111 along the die surface 120, so that the local temperature of the part corresponding to the inlet 1111 and the local temperature of the part corresponding to the outlet 1112 of the cooling water channels 111 are the same;
by designing the cooling water channel 111, the local temperature of the part corresponding to the inlet 1111 and the local temperature of the part corresponding to the outlet 1112 of the cooling water channel 111 are the same, so that the cooling effect and the cooling rate of each part of the part are the same, and the performance uniformity of the part is improved.
S3: the first working surface 121 is provided with water spraying units 130 which are arranged in one-to-one correspondence to and communicated with the first cooling water channels 1113, so as to obtain a design model of the hot stamping die 100;
the dimensions of the water injection unit 130 and the water velocity in the first cooling flume 1113 are determined by calculation and simulation to ensure that the properties of the side walls of the part do not result in excessive injection of cooling water.
S4: the physical processing is performed according to the design model of the hot stamping die 100.
And S1-S3, designing the model of the hot stamping die 100 in three-dimensional software, and after the design is finished, performing physical processing according to the designed model of the hot stamping die 100 for actual hot stamping production.
Further, with reference to fig. 3 and 4, step S2 specifically includes:
s21: a plurality of cooling water channels 111 are designed along the die surfaces 120 to form the water cooling system 110, and the distance between the top of the tube wall at the inlet 1111 of each cooling water channel 111 and the corresponding die surface 120 is the same as the distance between the top of the tube wall at the outlet 1112 of each cooling water channel 111 and the corresponding die surface 120;
that is, in this step, each cooling water channel 111 is horizontally arranged (see fig. 3), and the distance between the top of the pipe wall at the inlet 1111 and the top of the pipe wall at the outlet 1112 of each cooling water channel 111 and the corresponding die surface 120 is D 1 。
S22: performing simulation numerical simulation on the pressure maintaining process of the water cooling system 110 to obtain the local temperature T of the part corresponding to the inlet 1111 of the cooling water channel 111 1 And local temperature T of the part corresponding to outlet 1112 2 ，T 2 ＞T 1 ；
According to the foregoing, in the case where the cooling water passage 111 is horizontally arranged, and the distance between the top of the pipe wall at the inlet 1111 and the top of the pipe wall at the outlet 1112 is the same as the distance between the corresponding mold surfaces 120, the temperature T at the outlet 1112 of each cooling water passage 111 absorbs the heat of the parts during the flowing of the cooling water in the cooling water passage 111 2 Will be greater than the temperature T at the inlet 1111 1 ；
S23: obtaining the distance D between the top of the pipe wall at the inlet 1111 of the cooling water channel 111 and the corresponding die surface 120 in the step 21 1 And obtaining a corrected distance D between the top of the pipe wall at the outlet 1112 of the cooling water channel 111 and the corresponding die surface 120 according to the formula 1) 2 Equation 1)Comprises the following steps:
Figure BDA0003845081600000081
in equation 1): a is a correction coefficient, and A is more than 0 and less than 1;
the correction coefficient of the distance between the cooling water channel 111 and the corresponding die surface 120 can be obtained primarily through the temperature distribution difference at the two ends of the hot stamping module, and the correction coefficient of the distance between the cooling water channel 111 and the die surface 120 can be obtained by adjusting the coefficient to a certain extent according to the property of the die material.
S24: according to D obtained in step 23 2 The distance between the top of the pipe wall at the outlet 1112 of the cooling water passage 111 and the corresponding die surface 120 in step S21 is corrected.
D obtained in step 23 2 Is less than D 1 The closer the part of the part is to the cooling water channel 111, the better the cooling effect is, after the distance between the top of the pipe wall at the outlet 1112 of the cooling water channel 111 and the corresponding die surface 120 is corrected, the cooling water channel 111 is changed from horizontal to inclined (see fig. 4), that is, the influence caused by the higher temperature of the cooling water at the outlet 1112 of the cooling water channel 111 is compensated by the distance, so that the part is cooled more uniformly.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a hot stamping die for the hot stamping of part takes shape, a serial communication port, water cooling system has been seted up in the hot stamping die, water cooling system is close to hot stamping die's die face sets up, water cooling system includes many cooling water channels that the interval set up, the die face include with the first working face that the lateral wall cooperation of part set up is close to the cooling water channel that first working face set up is configured into first cooling water channel, seted up on the first working face with the water spray unit that first cooling water channel one-to-one set up, the water spray unit includes a plurality of hole for water sprayings, and is a plurality of the hole for water sprayings and the first cooling water channel intercommunication that corresponds to the blowout corresponds cooling water in the first cooling water channel.
2. The hot stamping die of claim 1, wherein the cooling water channel is inclined, and a distance between a top of a tube wall at an outlet of the cooling water channel and the corresponding die face is smaller than a distance between a top of a tube wall at an inlet of the cooling water channel and the corresponding die face.
3. The hot-stamping die of claim 1, wherein a plurality of the cooling channels are arranged in parallel.
4. A hot stamping die according to claim 1, wherein the cooling water channel has a diameter of 8 to 14mm.
5. The hot stamping die of claim 1, wherein the die face of the hot stamping die includes two first working faces oppositely disposed, and the die face of the hot stamping die further includes a second working face disposed to cooperate with the bottom of the part and two third working faces disposed to cooperate with the edge pressing portions of the part, the second working face is disposed between the bottoms of the two first working faces, the two third working faces are disposed at the tops of the two first working faces, and the third working face is disposed on a side of the first working face away from the second working face.
6. The hot-stamping die of claim 4, wherein a plurality of the water spray holes are spaced apart and side-by-side along a length of the corresponding cooling water channel.
7. A hot-stamping die according to claim 5, wherein the water-jet holes have a diameter of 1-5mm.
8. The hot stamping die of claim 5, wherein the water spray unit is disposed on a side of the corresponding first cooling water channel adjacent to the second working surface.
9. A method for manufacturing a hot stamping die, which is the method for manufacturing a hot stamping die according to any one of claims 1 to 8, and which comprises:
s1: designing a die surface of the hot stamping die to enable the die surface to be matched with the outer contour of a target part;
s2: designing a plurality of cooling water channels along the die surface, so that the local temperature of the part corresponding to the inlet of each cooling water channel is the same as the local temperature of the part corresponding to the outlet of each cooling water channel;
s3: arranging water spraying units which are arranged in one-to-one correspondence to and communicated with the first cooling water channels on the first working surface to obtain a design model of the hot stamping die;
s4: and performing real object processing according to the design model of the hot stamping die.
10. The method for manufacturing a hot stamping die according to claim 9, wherein step S2 specifically includes:
s21: a plurality of cooling water channels are designed along the mould surface to form a water cooling system, and the distance between the top of the pipe wall at the inlet of the cooling water channel and the corresponding mould surface is the same as the distance between the top of the pipe wall at the outlet of the cooling water channel and the corresponding mould surface;
s22: carrying out simulation numerical simulation on the pressure maintaining process of the water cooling system to obtain the local temperature T of the part corresponding to the inlet of the cooling water channel 1 And outlet pairLocal temperature T of the part 2 ，T 2 ＞T 1 ；
S23: obtaining the distance D between the top of the pipe wall at the inlet of the cooling water channel and the corresponding die surface in the step S21 1 And obtaining a corrected distance D between the top of the pipe wall at the outlet of the cooling water channel and the corresponding die surface according to the formula 1) 2 The formula 1) is:
Figure FDA0003845081590000021
in the formula 1): a is a correction coefficient, and A is more than 0 and less than 1;
s24: according to D obtained in step S23 2 The distance between the top of the pipe wall at the outlet of the cooling water passage and the corresponding die surface in step S21 is corrected.
CN202211115053.9A 2022-09-14 2022-09-14 Hot stamping die and manufacturing method thereof Pending CN115555478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211115053.9A CN115555478A (en) 2022-09-14 2022-09-14 Hot stamping die and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211115053.9A CN115555478A (en) 2022-09-14 2022-09-14 Hot stamping die and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN115555478A true CN115555478A (en) 2023-01-03

Family

ID=84741812

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211115053.9A Pending CN115555478A (en) 2022-09-14 2022-09-14 Hot stamping die and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN115555478A (en)

Similar Documents

Publication Publication Date Title
CN105710226B (en) Hot forming tool and steel member manufacture method
JP4861518B2 (en) Pressure forming method for embossed steel sheet
CN103028645A (en) Hot stamping forming method for variable strength distribution strong-strength steel plate part
CN102039349A (en) Method and thermal recasting assembly for producing a hardened, thermally recast workpiece
CN104923660A (en) Hot stamping die of snakelike cooling water channel type
KR101283983B1 (en) Modl for hotstamping
CN207447132U (en) A kind of 3D printing inlaid type hot stamping die conformal cooling channel
CN101928811A (en) Steel plate quenching method based on model control
CN108866285A (en) A kind of heavy die block mould steel Tempering and Quenching method
CN102941255B (en) Online roll bending forming technology for super-strength pipe piece
CN111154960A (en) Hot-forming soft and hard area part and production process thereof
KR20190094859A (en) Direct water cooling mold for hot stamping
CN115555478A (en) Hot stamping die and manufacturing method thereof
CN107520308A (en) A kind of high-strength steel servo medium temperature Sheet Metal Forming Technology
CN103386444B (en) The direct-cooled technique of cooling fluid based on the hot-forming die of boron steel steel plate and device
CN102284511A (en) Band steel laminar flow cooling temperature self-adaptive method
CN105436275A (en) Hot-stamping forming process of low-carbon boron alloy steel automobile reinforcing plate
KR100842710B1 (en) Oil cooling die which has function of preventing heat deformation and manufacturing method for machine parts using the same
CN100465303C (en) Cooling process and device for a steel sheet
CN105521992B (en) A kind of high-strength marine shaped steel preparation technology
CN202951740U (en) Online roll bending and forming device for pipe fittings with ultra-high strength
CN103182452A (en) Mould for forming automobile metal parts and method
KR102125380B1 (en) Die and method for hot stamping
CN105821181B (en) A kind of heat treatment method of metal
JP5685462B2 (en) Hot press equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination