CA2928046A1 - System and method for hot stamping of components - Google Patents
System and method for hot stamping of components Download PDFInfo
- Publication number
- CA2928046A1 CA2928046A1 CA2928046A CA2928046A CA2928046A1 CA 2928046 A1 CA2928046 A1 CA 2928046A1 CA 2928046 A CA2928046 A CA 2928046A CA 2928046 A CA2928046 A CA 2928046A CA 2928046 A1 CA2928046 A1 CA 2928046A1
- Authority
- CA
- Canada
- Prior art keywords
- tempering container
- steel blanks
- furnace
- blanks
- hot stamping
- 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.)
- Abandoned
Links
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
Abstract
A system for hot stamping of components includes a station for providing steel blanks to a tempering container. The tempering container is for storing the steel blanks and for pre-heating the steel blanks to a pre-heating temperature. A furnace station receives the pre-heated steel blanks from the tempering container and further heats the steel blanks to a predetermined deformation temperature. The heated steel blanks are subsequently provided to press having a tool that is designed for hot stamping technology, and the components are hot stamped in the press.
Description
SYSTEM AND METHOD FOR HOT STAMPING OF COMPONENTS
FIELD OF THE INVENTION
[0001] The invention relates generally to a system and method for hot stamping components.
In particular, the system includes a station for the provision of blanks, a furnace station for heating the blanks to the deformation temperature, and a press having a tool that is designed for press hardening / hot stamping technology.
BACKGROUND
FIELD OF THE INVENTION
[0001] The invention relates generally to a system and method for hot stamping components.
In particular, the system includes a station for the provision of blanks, a furnace station for heating the blanks to the deformation temperature, and a press having a tool that is designed for press hardening / hot stamping technology.
BACKGROUND
[0002] Steel continues to be the material of choice when it comes to modern and cost-effective vehicle bodies. In terms of material, new steels that combine high strength with good formability have been developed in response to the demands of the automotive industry for lightweight construction materials. In particular, the multiphase steels are used extensively in hot stamping processes in which a steel blank is heated into the zone of full austenitization (typically 920 C). The heated blank is subsequently inserted into the forming tool while still hot, and is rapidly cooled during the pressing operation. From a relatively soft, ferritic-pearlitic initial structure, hard martensite with strengths of at least about 1500 MPa is obtained. The forming behaviour is controlled by means of the boron content and the strength is controlled by means of the carbon content. Typically, a boron-alloyed steel with 0.24%
carbon is employed.
carbon is employed.
[0003] Advantages of the press hardening method include the low forming resistance and the better formability of steel at this temperature, as well as the high strength and good dimensional stability of the obtained component. In general, the use of hot stamping methods and new steel materials results in high-strength but low-weight vehicle bodies.
[0004] Due to the increasing use of hot stamping technology in the automotive industry, the press-hardening machinery is becoming faster. Machines that achieve five strokes per minute have been in use for some time already, and newer machines that achieve seven strokes per minute are known. As a result of the reduced cycle length, the efficiency of the hot stamping method is increased. However, the heating of the supplied blanks via heating furnaces has hitherto been the limiting factor. Since the blanks have to be heated to a processing temperature of over 900 C, heating furnaces which are configured as continuous furnaces are used. Over a 30 m length of such a continuous furnace, the blank is heated by 30 C per metre. Accordingly, the pass-through speed of the blanks and the length of the heating furnaces limits the cycle length of the hot stamping system.
[0005] It would be beneficial to provide a system and method that improves and/or overcomes at least some of the above-mentioned disadvantages.
SUMMARY OF EMBODIMENTS OF THE INVENTION
SUMMARY OF EMBODIMENTS OF THE INVENTION
[0006] It is an object of the invention to provide a hot stamping system, which is optimized for processes with higher cycle durations. That is to say, the cycle rate is increased such that more strokes per minute are achievable.
[0007] According to an aspect of at least one embodiment of the invention, provided is a system for hot stamping of components, comprising: a station for providing steel blanks; a tempering container for storing the steel blanks and for pre-heating the steel blanks to a pre-heating temperature; a furnace station for receiving the pre-heated steel blanks from the tempering container and for further heating the steel blanks to a predetermined deformation temperature; and a press having a tool that is designed for hot stamping technology, the press for receiving the heated steel blanks from the furnace station and for hot stamping the components.
[0008] Through the use of a tempering container, a part of the heating process is performed prior to introducing the blanks into the furnace station. As a result, the furnace station is shortened and the pass-through process can thereby be adapted to the faster cycle rates of the presses.
[0009] In at least one embodiment the blanks are heated in the tempering container to a temperature of at least 100 C. As a result, the furnace station can be shortened by several metres, since the blanks are introduced into the furnace station already with a starting temperature higher than the ambient atmosphere.
[0010] In at least one embodiment the furnace station is a continuous furnace and is directly connected to the tempering container.
[0011] The direct connection between the tempering container and the continuous furnace has the advantage that the blanks do not cool down in the course of the process, e.g. during transfer between the tempering container and the continuous furnace.
[0012] In at least one embodiment the system is designed such that the continuous furnace for the system, given a target temperature above 900 C, is shortened by at least 5 m.
[0013] Through the shortening of the length of the continuous furnace, the time needed for the heating of the blanks is shortened and the blanks can be removed from the press at a faster rate.
[0014] In at least one embodiment the tempering container is heated with the waste gas of the continuous furnace. Through the return of the waste heat of the continuous furnace into the tempering container, an advantageous solution from an energy viewpoint is obtained. The need for higher power levels, as would otherwise be required with a shortened furnace to maintain the same target temperature, is avoided. On the contrary, the use of energy is reduced in that the waste heat is passed into the tempering container and is used there to preheat the blanks.
[0015] It is additionally of advantage that the method for the hot stamping of components comprises the following steps:
= provision of blanks, = introduction of the blanks into a tempering container = heating of the blanks in the tempering container = introduction of the preheated blanks into a continuous furnace = pressing in a press hardening / hot stamping tool.
= provision of blanks, = introduction of the blanks into a tempering container = heating of the blanks in the tempering container = introduction of the preheated blanks into a continuous furnace = pressing in a press hardening / hot stamping tool.
[0016] Advantageously, if the blanks are heated to a higher temperature in the tempering container, then the length of the continuous furnace may be decreased. The higher the temperature in the tempering container, the shorter the minimum length of the continuous furnace.
[0017] It is additionally of advantage that the waste heat of the continuous furnace is utilized to heat the tempering container in order to obtain an optimal utilization of the energy and, at the same time, to shorten the cycle time.
BREIF DESCRIPTION OF THE DRAWINGS
BREIF DESCRIPTION OF THE DRAWINGS
[0018] The invention will now be described by way of example only, and with reference to the attached drawing. It should be understood that the drawing is not necessarily to scale. In certain instances, details that are not necessary for an understanding of the disclosure or that render other details difficult to perceive have been omitted.
[0019] Fig. 1 is a simplified diagram showing a system according to an embodiment of the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
DETAILED DESCRIPTION OF THE DRAWINGS
[0020] Referring to Fig. 1, a hot stamping system 1 includes a tempering container 2, which is connected to a furnace station 3. The furnace station 3 is in turn connected to a press 6. The furnace station 3 supplies heat into the tempering container 2 via a waste gas return line 4. In the tempering container, blanks 5 are represented schematically. The blanks 5 are prepared by a blank-providing station, which is represented in the drawing only schematically as an arrow on the left-hand side, and are delivered to the tempering container 2. The blanks can here be simple portions of steel bands supplied on rolls, or can exist in a form already pre-trimmed by a trimming station. The blanks 5 are inserted into the tempering container 2.
Present in the tempering container 2 is an apparatus in which the blanks can be stored at a distance apart, so that the individual blanks can be easily removed again. In the present example the tempering container is designed such that the residence time of the blanks in the tempering container is sufficient to preheat them to the preheat temperature of over 100 C, most advantageously to 180 C. Optionally, the blanks are preheated in the tempering container to even higher temperatures, if such higher temperatures can be obtained via the waste gas return line.
Present in the tempering container 2 is an apparatus in which the blanks can be stored at a distance apart, so that the individual blanks can be easily removed again. In the present example the tempering container is designed such that the residence time of the blanks in the tempering container is sufficient to preheat them to the preheat temperature of over 100 C, most advantageously to 180 C. Optionally, the blanks are preheated in the tempering container to even higher temperatures, if such higher temperatures can be obtained via the waste gas return line.
[0021] According to the "first in - first out" principle, the blank that has resided for the longest time in the tempering container 2 is removed first, followed by the blank that has resided for the second longest time in the tempering container 2, and so on.
It is thereby ensured that the removed blank is already at the preheat temperature. The preheated blank 5 is introduced into the furnace via a direct connection of the tempering container 2 to the furnace 3. In the furnace 3, the blank 5 passes through the entire furnace length between the tempering container 2 and the press 6. At the end of the furnace 3, the blank 5 is removed and immediately inserted into the pressing tool 7 of the press 6.
It is thereby ensured that the removed blank is already at the preheat temperature. The preheated blank 5 is introduced into the furnace via a direct connection of the tempering container 2 to the furnace 3. In the furnace 3, the blank 5 passes through the entire furnace length between the tempering container 2 and the press 6. At the end of the furnace 3, the blank 5 is removed and immediately inserted into the pressing tool 7 of the press 6.
[0022] The design of the tempering container 2 for blanks 5 can be shown on the basis of an example. An exemplary continuous furnace in the furnace station 3 has a length of 30 m and obtains a predetermined exemplary deformation temperature of 920 C. The downstream press has currently five strokes per minute. Should it be desired to operate the machine at 7 strokes per minute, this means an increase of about 20% in the cycle frequency. It therefore follows that the blanks 5 must arrive at the press 20 % quicker out of the furnace station 3, and the continuous furnace must therefore be shortened by about 6 m. With a heating rate of 30 C per 1 m of furnace length, this means that the tempering container must be set to 180 C
in order to feed a continuous furnace length of about 24 m.
Reference symbols 1 hot stamping system 2 tempering container 3 furnace station 4 waste gas return line 5 blank 6 press 7 pressing tool
in order to feed a continuous furnace length of about 24 m.
Reference symbols 1 hot stamping system 2 tempering container 3 furnace station 4 waste gas return line 5 blank 6 press 7 pressing tool
Claims (9)
1. A system for hot stamping of components, comprising:
a station for providing steel blanks (5);
a tempering container (2) for storing the steel blanks (5) and for pre-heating the steel blanks (5) to a pre-heating temperature;
a furnace station (3) for receiving the pre-heated steel blanks (5) from the tempering container (2) and for further heating the steel blanks (5) to a predetermined deformation temperature; and a press (6) having a tool (7) that is designed for hot stamping technology, the press for receiving the heated steel blanks (5) from the furnace station (3) and for hot stamping the components.
a station for providing steel blanks (5);
a tempering container (2) for storing the steel blanks (5) and for pre-heating the steel blanks (5) to a pre-heating temperature;
a furnace station (3) for receiving the pre-heated steel blanks (5) from the tempering container (2) and for further heating the steel blanks (5) to a predetermined deformation temperature; and a press (6) having a tool (7) that is designed for hot stamping technology, the press for receiving the heated steel blanks (5) from the furnace station (3) and for hot stamping the components.
2. The system according to claim 1, wherein the steel blanks (5) are pre-heated in the tempering container (2) to a temperature of at least 100°C.
3. The system according to claim 1, wherein the furnace station (3) is a continuous furnace that is connected directly to the tempering container (2).
4. The system according to claim 3, wherein the predetermined deformation temperature is over 900°C, and wherein a length of the continuous furnace is shortened by at least 5 m relative to a length of a continuous furnace of a system absent the tempering container (2).
5. The system according to claim 1, wherein the tempering container (2) is coupled to the furnace station (3) via a waste-gas line (4), and wherein the tempering container (2) is heated using waste gas from the furnace station (3).
6. A method for hot stamping of components, comprising:
providing a plurality of steel blanks;
introducing the steel blanks into a tempering container;
preheating the steel blanks in the tempering container to a preheating temperature;
transferring the preheated steel blanks into a continuous furnace;
further heating the steel blanks in the continuous furnace to a predetermined deformation temperature; and hot stamping the heated steel blanks in a hot stamping tool.
providing a plurality of steel blanks;
introducing the steel blanks into a tempering container;
preheating the steel blanks in the tempering container to a preheating temperature;
transferring the preheated steel blanks into a continuous furnace;
further heating the steel blanks in the continuous furnace to a predetermined deformation temperature; and hot stamping the heated steel blanks in a hot stamping tool.
7. The method according to claim 6, wherein a length of the continuous furnace is dependent on the preheating temperature in the tempering container.
8. The method according to claim 6, wherein waste heat from the continuous furnace is utilized to heat the tempering container.
9. The method according to claim 6, wherein the steel blanks are preheated in the tempering container to a temperature of at least 100°C.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013222243.2 | 2013-10-31 | ||
DE201310222243 DE102013222243A1 (en) | 2013-10-31 | 2013-10-31 | Plant for hot forming of components and method |
PCT/CA2014/051051 WO2015061911A1 (en) | 2013-10-31 | 2014-10-31 | System and method for hot stamping of components |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2928046A1 true CA2928046A1 (en) | 2015-05-07 |
Family
ID=52811754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2928046A Abandoned CA2928046A1 (en) | 2013-10-31 | 2014-10-31 | System and method for hot stamping of components |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN105682817A (en) |
CA (1) | CA2928046A1 (en) |
DE (1) | DE102013222243A1 (en) |
MX (1) | MX2016005114A (en) |
WO (1) | WO2015061911A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019213774A1 (en) | 2018-05-11 | 2019-11-14 | Magna International Inc. | Conduction pre-heating of sheet for hot forming |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017211076B4 (en) | 2017-06-29 | 2019-03-14 | Thyssenkrupp Ag | Method for producing a coated steel component and steel component |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009025821B4 (en) * | 2009-05-18 | 2011-03-31 | Thyssenkrupp Steel Europe Ag | Method for producing a metal component |
DE102009026251A1 (en) * | 2009-07-24 | 2011-02-03 | Thyssenkrupp Steel Europe Ag | Method and device for energy-efficient hot forming |
-
2013
- 2013-10-31 DE DE201310222243 patent/DE102013222243A1/en not_active Ceased
-
2014
- 2014-10-31 MX MX2016005114A patent/MX2016005114A/en unknown
- 2014-10-31 CA CA2928046A patent/CA2928046A1/en not_active Abandoned
- 2014-10-31 CN CN201480058868.5A patent/CN105682817A/en active Pending
- 2014-10-31 WO PCT/CA2014/051051 patent/WO2015061911A1/en active Application Filing
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019213774A1 (en) | 2018-05-11 | 2019-11-14 | Magna International Inc. | Conduction pre-heating of sheet for hot forming |
CN112118922A (en) * | 2018-05-11 | 2020-12-22 | 麦格纳国际公司 | Conductive preheating of sheet material for thermoforming |
EP3790687A4 (en) * | 2018-05-11 | 2022-01-26 | Magna International Inc | Conduction pre-heating of sheet for hot forming |
CN112118922B (en) * | 2018-05-11 | 2024-02-02 | 麦格纳国际公司 | Conductive preheating of sheet material for thermoforming |
Also Published As
Publication number | Publication date |
---|---|
WO2015061911A1 (en) | 2015-05-07 |
CN105682817A (en) | 2016-06-15 |
MX2016005114A (en) | 2016-07-19 |
DE102013222243A1 (en) | 2015-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20110094282A1 (en) | Method and hot forming system for producing a hardened, hot formed workpiece | |
US10612108B2 (en) | Method for heating steel sheets and device for carrying out the method | |
US10000823B2 (en) | Method and device for partially hardening sheet metal components | |
CN102482725A (en) | Method And Device For Energy-efficient Hot Forming | |
CN101805821A (en) | Integrated stamping forming treatment method of steel | |
CN101796202A (en) | Method for producing a shaped component comprising at least two joining areas having different ductility | |
CN105358718A (en) | Process and installation for producing a press-hardened sheet steel component | |
MX2018004660A (en) | Partial radiation heating method for producing press hardened parts and arrangement for such production. | |
WO2010127837A3 (en) | Device and method for heating workpieces which are to be hot-formed | |
DE102006054389A1 (en) | Selective adjustment of a defined hardness, firmness and/or ductility of press-hardened and/or hot formed sheet metal components useful in production of vehicle bodies, by covering and/or shielding defined areas/partial areas of components | |
CN103212950A (en) | Technique of improving toughening and formability of automotive AHSS hot-stamping structural component | |
US20160208353A1 (en) | Heat treatment method for ring-shaped member and heat treatment equipment for ring-shaped member | |
CN109072325A (en) | Heat treatment method and annealing device | |
CN103394573A (en) | Hot stamping forming process based on Q&P one-step method | |
KR20190039666A (en) | Centering and selective heating of blanks | |
US20150090378A1 (en) | Method of hot-shaping and hardening a sheet steel blank | |
US10472691B2 (en) | Hot-forming apparatus and method for producing press-hardened shaped components from steel sheet | |
CA2928046A1 (en) | System and method for hot stamping of components | |
JP7168450B2 (en) | Heat treatment method and heat treatment apparatus | |
CN102517433A (en) | Heat treatment method of high-strength wear plates | |
CN108884510B (en) | Heat treatment method and heat treatment apparatus | |
US20160230244A1 (en) | Method for thermally treating ring-shaped member | |
CN101910425A (en) | A process for forming steel | |
WO2010089103A1 (en) | Method and furnace for making a metal workpiece with regions of different ductility | |
CN103946411B (en) | Low pressure carbo-nitriding method on the initial nitriding stage in the temperature range of expansion |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |
Effective date: 20171031 |