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WO2015094080A1 - Produit en sandwich durci à la presse et son procédé de fabrication - Google Patents

Produit en sandwich durci à la presse et son procédé de fabrication 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
English (en)
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/fr
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

La présente invention concerne un produit en sandwich formé, scellé qui est fabriqué par durcissement à la presse d'une ébauche en sandwich constituée de deux feuilles (12, 13) avec un matériau d'espacement (14) et un brasage situés entre celles-ci. Les bords de l'ébauche sont exclus du matériau d'espacement et les bords sont pressés conjointement dans le durcissement à la presse de sorte que les bords des feuilles soient assemblés de façon hermétique sans matériau d'espacement. En variante, il existe un rebord de scellement avec du matériau d'espacement le long des bords.
PCT/SE2014/051328 2013-12-18 2014-11-10 Produit en sandwich durci à la presse et son procédé de fabrication Ceased WO2015094080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1300781A SE538205C2 (sv) 2013-12-18 2013-12-18 Presshärdad sandwichprodukt samt förfarande för tillverkningav produkten
SE1300781-0 2013-12-18

Publications (1)

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

Family

ID=53403237

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2014/051328 Ceased WO2015094080A1 (fr) 2013-12-18 2014-11-10 Produit en sandwich durci à la presse et son procédé de fabrication

Country Status (2)

Country Link
SE (1) SE538205C2 (fr)
WO (1) WO2015094080A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113966270A (zh) * 2019-03-29 2022-01-21 弗劳恩霍夫应用研究促进协会 用于生产具有压制的二维或三维形状的夹层复合构件的方法以及这种夹层复合构件

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 (fr) * 2004-11-12 2006-05-18 Thyssenkrupp Sofedit S.A.S. Procede de fabrication d'elements en tole et element de carrosserie
DE102006049014A1 (de) * 2006-10-13 2008-04-17 Thyssenkrupp Steel Ag Verbundblech mit hohem Energieabsorptionsvermögen

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 (fr) * 2004-11-12 2006-05-18 Thyssenkrupp Sofedit S.A.S. Procede de fabrication d'elements en tole et element de carrosserie
DE102006049014A1 (de) * 2006-10-13 2008-04-17 Thyssenkrupp Steel Ag Verbundblech mit hohem Energieabsorptionsvermögen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113966270A (zh) * 2019-03-29 2022-01-21 弗劳恩霍夫应用研究促进协会 用于生产具有压制的二维或三维形状的夹层复合构件的方法以及这种夹层复合构件
CN113966270B (zh) * 2019-03-29 2023-09-08 弗劳恩霍夫应用研究促进协会 用于生产具有压制的二维或三维形状的夹层复合构件的方法以及这种夹层复合构件

Also Published As

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

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