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WO2015094080A1 - Press hardened sandwich product and method of manufacturing it - Google Patents

Press hardened sandwich product and method of manufacturing it Download PDF

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Publication number
WO2015094080A1
WO2015094080A1 PCT/SE2014/051328 SE2014051328W WO2015094080A1 WO 2015094080 A1 WO2015094080 A1 WO 2015094080A1 SE 2014051328 W SE2014051328 W SE 2014051328W WO 2015094080 A1 WO2015094080 A1 WO 2015094080A1
Authority
WO
WIPO (PCT)
Prior art keywords
spacer material
product
edges
sheets
sandwich
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.)
Ceased
Application number
PCT/SE2014/051328
Other languages
French (fr)
Inventor
Lars WIKSTRÖM
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.)
Gestamp Hardtech AB
Original Assignee
Gestamp Hardtech AB
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 Gestamp Hardtech AB filed Critical Gestamp Hardtech AB
Publication of WO2015094080A1 publication Critical patent/WO2015094080A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • 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
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/04—Making rigid structural elements or units, e.g. honeycomb structures composite sheet metal profiles
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0014—Brazing of honeycomb sandwich structures
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/008—Soldering within a furnace
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0244—Powders, particles or spheres; Preforms made therefrom
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • 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
    • 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
    • B23K2101/02—Honeycomb structures
    • 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
    • B23K2101/18—Sheet panels
    • B23K2101/185—Tailored blanks
    • 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
    • B23K2101/28—Beams
    • 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
    • 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
    • B23K2103/05—Stainless steel
    • 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
    • C21D2251/00—Treating composite or clad material
    • C21D2251/04—Welded or brazed overlays

Definitions

  • the invention relates to a hot formed sandwich product and to a method of manufacturing a shaped product from sandwich sheet by making a sandwich blank from two sheets with spacer material lying in between and hot forming the blank so that the sheets and spacer material are joined.
  • Sandwich sheet is known for example from US 6,387,531 B1 , which shows two stainless sheets and a core of stainless steel wool. The sheets and the core are welded together.
  • DE 10 2006 049 014 A1 shows a hot formed product in which the spacer material and covering sheets are joined in the hot forming.
  • the object of the invention is to obtain at relatively low cost a high strength, light sandwich product that has the required stiffness and does not have impaired corrosion resistance compared to a conventional product of single sheet.
  • Figure 1 shows a hat beam as an example of the invention.
  • Figure 2 is a cross section through the hat beam in figure 1 along the line 2-2 in figure 1.
  • Figure 3 shows a part of the blank that the product was manufactured from.
  • Figure 4 is a section taken along the line 4-4 in figure 3.
  • Figure 5 is a section, corresponding to figure 2, of a modified product.
  • Figure 6 shows a part of the blank from which the product in figure 5 is manufactured.
  • the hat beam 11 shown in the figures 1 and 2 has a central flange 18, sides 19,20, and side flanges 21 , 22. It consists of two steel sheets 12, 13 with spacer material 14 in between, usually described as the core.
  • Figure 3 shows one sheet 13 with the spacer material 14 in the form of a honeycomb pattern before the flat blank for manufacture of the hat beam is completed in a pre-process to a sandwich sheet consisting of the two sheets 12, 13 with the spacer material 14 in between.
  • the spacer material leaves the edges of the sheets - in this case the side flanges 21 , 22 and end edges 23 of the hat beam - free and when the blank is press-hardened to form the hat beam 11 , the edges of the blank are pressed directly together and soldered to one another as can be seen from figure 1 so that all of the product's edges are tight and a completely tight sandwich product is obtained.
  • the manufacture of the blank begins by cutting the sheets 12, 13 to size. Then steel powder mixed with a binding agent is applied in the desired loose pattern to the flat sheet 13. The sheet 13 is then placed in a furnace at sintering temperature, e.g. 1150 degrees Celsius, so that the steel powder sinters together and sticks to the sheet and the binding agent is evaporated.
  • the sheets 12, 13 are boron steel sheet of the type that is normally used in press hardening, but they are thinner, e.g. 0.2 - 0.8 mm, and the steel powder can be a boron steel powder that is applied with a printer in the desired thickness, e.g. 0.5- 1.5 mm.
  • solder which can be sprayed on or laid on as a film, for example, and the sheets are placed together and fixed to one another to give a finished blank with the sintered powder and solder between the sheets.
  • the fixing can be carried out with an individual weld point or in another way.
  • the finished blank is press-hardened in a conventional manner, i.e. it is heated in a furnace to austenitising temperature and then moved into the cooled two-part press-hardening tool, where the blank is quickly formed and the shaped product may remain for a few seconds until it has hardened with the tool pair as fixture.
  • the honeycomb pattern is suitably made tighter in the parts 16 of the blank that will end up in bends on the finished product as is clear from figure 3; this is to avoid too great a compression of the core in the forming.
  • press hardening the steel sheets and the spacer material are soldered together to a unit with a sandwich structure.
  • the two-part cooled press-hardening tool is designed so that the steel sheets in the parts of the blank that do not have spacer material are pressed into direct contact and soldered together as shown in figures 1 and 2.
  • the rim can be of sintered powder with solder as the rest of the spacer material, but can be a solid rim of steel.
  • Figure 6 shows the sheet 13 in the embodiment according to figure 5 with a tight rim 25. In- stead of powder, a sheet of soft steel can be used, which is punched so that it forms the loose pattern shown in the figures.
  • One sheet can for exam- plehave impressed dents, which act as spacer material. However, the dents cause a certain impairment of the strength of the sheet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

A shaped, sealed sandwich product is manufactured by press hardening of a sandwich blank consisting of two sheets (12, 13) with spacer material (14) and solder lying in between. The edges of the blank are excepted from the spacer material and the edges are pressed together in the press hardening so that the sheet edges are sealingly joined without spacer material. Alternatively, there is a sealing rim with spacer material along the edges.

Description

PRESS HARDENED SANDWICH PRODUCT AND METHOD OF MANUFACTURING IT
Field of the invention
The invention relates to a hot formed sandwich product and to a method of manufacturing a shaped product from sandwich sheet by making a sandwich blank from two sheets with spacer material lying in between and hot forming the blank so that the sheets and spacer material are joined. Background of the invention
By press hardening sheet workpieces for vehicles, a material is obtained with very high tensile strength. Thanks to the increasingly high tensile strength, it is possible to use thinner and thus lighter sheet, but this gives the shaped product reduced stiffness and the demands for stiffness often limit the opportunity of using thin sheet. Sandwich sheet is known for example from US 6,387,531 B1 , which shows two stainless sheets and a core of stainless steel wool. The sheets and the core are welded together. DE 10 2006 049 014 A1 shows a hot formed product in which the spacer material and covering sheets are joined in the hot forming. Object of the invention
The object of the invention is to obtain at relatively low cost a high strength, light sandwich product that has the required stiffness and does not have impaired corrosion resistance compared to a conventional product of single sheet. Brief description of the invention
The object of the invention is achieved when the blank is press-hardened and the edges of the formed product are sealed during the press hardening. The invention is defined by the claims. Brief description of the drawings
Figure 1 shows a hat beam as an example of the invention.
Figure 2 is a cross section through the hat beam in figure 1 along the line 2-2 in figure 1.
Figure 3 shows a part of the blank that the product was manufactured from. Figure 4 is a section taken along the line 4-4 in figure 3.
Figure 5 is a section, corresponding to figure 2, of a modified product.
Figure 6 shows a part of the blank from which the product in figure 5 is manufactured.
Description of the example shown of the invention
The hat beam 11 shown in the figures 1 and 2 has a central flange 18, sides 19,20, and side flanges 21 , 22. It consists of two steel sheets 12, 13 with spacer material 14 in between, usually described as the core. Figure 3 shows one sheet 13 with the spacer material 14 in the form of a honeycomb pattern before the flat blank for manufacture of the hat beam is completed in a pre-process to a sandwich sheet consisting of the two sheets 12, 13 with the spacer material 14 in between. The spacer material leaves the edges of the sheets - in this case the side flanges 21 , 22 and end edges 23 of the hat beam - free and when the blank is press-hardened to form the hat beam 11 , the edges of the blank are pressed directly together and soldered to one another as can be seen from figure 1 so that all of the product's edges are tight and a completely tight sandwich product is obtained. The manufacture of the blank begins by cutting the sheets 12, 13 to size. Then steel powder mixed with a binding agent is applied in the desired loose pattern to the flat sheet 13. The sheet 13 is then placed in a furnace at sintering temperature, e.g. 1150 degrees Celsius, so that the steel powder sinters together and sticks to the sheet and the binding agent is evaporated. If necessary, the addition of solder may be required if the powder does not stick to the sheet by the sintering. The sheets 12, 13 are boron steel sheet of the type that is normally used in press hardening, but they are thinner, e.g. 0.2 - 0.8 mm, and the steel powder can be a boron steel powder that is applied with a printer in the desired thickness, e.g. 0.5- 1.5 mm. When the sheet 13 has cooled, one sheet 12, 13 is coated with solder, which can be sprayed on or laid on as a film, for example, and the sheets are placed together and fixed to one another to give a finished blank with the sintered powder and solder between the sheets. The fixing can be carried out with an individual weld point or in another way. The finished blank is press-hardened in a conventional manner, i.e. it is heated in a furnace to austenitising temperature and then moved into the cooled two-part press-hardening tool, where the blank is quickly formed and the shaped product may remain for a few seconds until it has hardened with the tool pair as fixture.
The honeycomb pattern is suitably made tighter in the parts 16 of the blank that will end up in bends on the finished product as is clear from figure 3; this is to avoid too great a compression of the core in the forming. During press hardening, the steel sheets and the spacer material are soldered together to a unit with a sandwich structure. The two-part cooled press-hardening tool is designed so that the steel sheets in the parts of the blank that do not have spacer material are pressed into direct contact and soldered together as shown in figures 1 and 2.
It is also possible to have other areas without spacer material in which the steel sheets are pressed into direct contact with one another in order that reworking of the shaped product will be able in these areas without jeopardising the tightness of the sandwich construction.
The side flanges 19, 20 and also the end edges 23 of the hat beam will have the sheets soldered together without spacer material so that the entire sandwich construction is tight and thereby acquires good corrosion resistance. Sandwich products other than a beam can be made tight in the same manner. However, holes must exist through which air can flow into the sandwich product during cooling. If a wholly tight product is desired, such holes can be welded tight on the finished product. There can of course be products that do not need to be sealed and therefore have a part of their edge open. Figure 5 shows a modified embodiment in which the product is made tight in that it has a sealed rim 25 of spacer material, which forms the edges of the product instead of the sheets 12, 13 being in contact. The rim can be of sintered powder with solder as the rest of the spacer material, but can be a solid rim of steel. Figure 6 shows the sheet 13 in the embodiment according to figure 5 with a tight rim 25. In- stead of powder, a sheet of soft steel can be used, which is punched so that it forms the loose pattern shown in the figures.
It is alternatively possible to have other spacer material. One sheet can for exam- plehave impressed dents, which act as spacer material. However, the dents cause a certain impairment of the strength of the sheet.

Claims

Method of manufacturing a shaped product of sandwich sheet by making a sandwich blank of two sheets (12, 13) with spacer material (14) and solder in between, and hot forming the blank so that the sheets and spacer material are joined, characterised by that the blank is press-hardened to the product and, at the press hardening, the product's edges are sealed.
Method according to claim 1 , characterised by that a loose pattern (14) of metal powder and binding agent is placed on one sheet and the exposed powder is sintered together in a pre-process to make the spacer material and is bound to said one sheet.
Method according to claim 1 , characterised by that a sheet is punched to a loose pattern and used as spacer material.
Method according to claim 1, characterised by that edges (21 , 22) of the blank are excepted from the spacer material (14), and then during the press hardening the sheets (12, 13) are pressed to one another at said edges so that the sheets are joined there without spacer material.
Method according to claim 4, characterised by that the edges are reworked.
Method according to claims 1 , 2 or 3, characterised by that spacer material (14) is placed out to the outer edges of the sheets so that the product is tight along the outer edges of the sheets.
Sandwich product comprising two formed steel sheets (12, 3) with spacer material (14) lying in between, characterised by that the product is press- hardened and its edges (21 , 22, 23; 25) are tight.
Sandwich product according to claim 7, characterised by that the spacer material (14) comprises a sintered steel powder laid out in a pattern.
9. Sandwich product according to claim 7, characterised by that the spacer material (14) comprises a metal sheet punched to a loose pattern.
10. Sandwich product according to claim 7 or 8, characterised by that the edges (21 , 22, 23) of the product lack spacer material and have sheets directly joined to one another.
11. Sandwich product according to any of claims 7-10, characterised by that the edges of the product have a rim of sealing spacer material (25).
12. Sandwich product according to any of claims 7-11 , characterised by that the pattern of the spacer material (14) is tighter at the bends in the product than on its flat surfaces.
PCT/SE2014/051328 2013-12-18 2014-11-10 Press hardened sandwich product and method of manufacturing it Ceased WO2015094080A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1300781-0 2013-12-18
SE1300781A SE538205C2 (en) 2013-12-18 2013-12-18 Pressure-hardened sandwich product and process for the manufacture of the product

Publications (1)

Publication Number Publication Date
WO2015094080A1 true WO2015094080A1 (en) 2015-06-25

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ID=53403237

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2014/051328 Ceased WO2015094080A1 (en) 2013-12-18 2014-11-10 Press hardened sandwich product and method of manufacturing it

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SE (1) SE538205C2 (en)
WO (1) WO2015094080A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113966270A (en) * 2019-03-29 2022-01-21 弗劳恩霍夫应用研究促进协会 Method for producing a sandwich composite component having a pressed two-dimensional or three-dimensional shape, and such a sandwich composite component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6387535B1 (en) * 1997-08-06 2002-05-14 Usinor Sheet having a multilayer structure
WO2006050688A1 (en) * 2004-11-12 2006-05-18 Thyssenkrupp Sofedit S.A.S. Method for production of sheet components and chassis components
DE102006049014A1 (en) * 2006-10-13 2008-04-17 Thyssenkrupp Steel Ag Sheet metal sandwich panel for automotive construction has outer steel panel linked to inner steel panel by spacers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6387535B1 (en) * 1997-08-06 2002-05-14 Usinor Sheet having a multilayer structure
WO2006050688A1 (en) * 2004-11-12 2006-05-18 Thyssenkrupp Sofedit S.A.S. Method for production of sheet components and chassis components
DE102006049014A1 (en) * 2006-10-13 2008-04-17 Thyssenkrupp Steel Ag Sheet metal sandwich panel for automotive construction has outer steel panel linked to inner steel panel by spacers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113966270A (en) * 2019-03-29 2022-01-21 弗劳恩霍夫应用研究促进协会 Method for producing a sandwich composite component having a pressed two-dimensional or three-dimensional shape, and such a sandwich composite component
CN113966270B (en) * 2019-03-29 2023-09-08 弗劳恩霍夫应用研究促进协会 Method for producing a sandwich composite member having a pressed two-dimensional or three-dimensional shape and such a sandwich composite member

Also Published As

Publication number Publication date
SE538205C2 (en) 2016-04-05
SE1300781A1 (en) 2015-06-19

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