Classifications

• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
  • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
  • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
  • C04B35/486—Fine ceramics
  • C04B35/488—Composites
  • C04B35/4885—Composites with aluminium oxide
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/008—Bolts without screw-thread; Pins, including deformable elements; Rivets with sealing means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/04—Rivets; Spigots or the like fastened by riveting
  • F16B19/06—Solid rivets made in one piece
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
  • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
  • C04B2235/74—Physical characteristics
  • C04B2235/77—Density
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
  • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
  • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Definitions

• the invention relates to a punch-embossed rivet according to the preamble of claim 1.
• Such stamped-embossed rivets are used to connect two or more joining parts, types of semi-finished products, sheets, profiles and the like.
• the rivet is first pressed through the joining parts to be connected with the aid of a rivet punch without Norlochen, whereby the rivet also acts as a cutting punch.
• the parts to be joined with the now closed surface of the rivet punch and hold-down device are pressed against a lower die.
• an annular groove is embossed into the lower joining part around the shaft end of the rivet, as a result of which the material of the lower joining part is pressed into at least one circumferential shaft groove of the rivet.
• the previously used punch-embossed rivets are usually made of steel.
• the rivets are usually provided with an anti-corrosion layer.
• this corrosion protection layer can be partially destroyed again, as a result of which the corrosion protection is no longer guaranteed in the desired manner.
• hardly any coating is suitable for use in magnesium.
• mechanical post-processing at the rivet point by grinding The corrosion protection of the rivet is also damaged and the component can corrode.
• the object of the invention is to provide a punch-embossed rivet of the type mentioned at the outset, which eliminates the aforementioned problems.
• the punch-embossed rivet according to the invention is made of a pressure-resistant and shear-resistant ceramic material.
• the rivet geometry is created, for example, by injection molding. A heat treatment after shaping gives the rivet its hardness.
• the ceramic rivet is pressed self-piercing through the parts of the joint without being destroyed.
• the ceramic rivet can also e.g. mechanically processed by grinding.
• the stamped embossed rivet preferably consists of an oxide ceramic, non-oxide ceramic or mixtures of different oxide ceramics and mixtures of non-oxide ceramics.
• a zirconium oxide reinforced aluminum oxide ceramic with a zirconium oxide content of more than 60% by weight and a material density of more than 5.2 kg / dm 3 has proven to be a particularly suitable ceramic material for a stamped embossed rivet.
• the stamped embossed rivet advantageously has a compressive strength of more than 2900 N / mm 2 , a flexural strength of more than 700 N / mm 2 , a fracture toughness of more than 8 kic and an elastic modulus of less than 270 N / mm ,
• the hardness of the punched embossed rivet should be less than 1900 HV 10 (Vickers hardness).
• the ceramic material is also gastight and acid-proof.
• the punch-embossed rivet 1 shown in the drawing is a so-called multi-range rivet, which is suitable for joining an upper joining part 2 to a thicker lower joining part 3 a or a thinner lower joining part 3 b.
• Such a stamped-embossed rivet offers the possibility of being able to connect different joining part thicknesses with a single type of rivet.
• the punch-embossed rivet 1, which is designed as a full rivet contains a truncated cone-shaped rivet head 4 and an adjoining cylindrical shaft 5, in which a plurality of mutually abutting shaft grooves 6 are arranged.
• a sharp edge 7 is provided, by means of which the production of the punched holes in the joining parts 2 and 3a and 3b to be connected is facilitated.
• this punch-embossed rivet 1 is pressed by a rivet punch, not shown, from top to bottom through the joining parts 2 and 3a or 3b fixed by means of a hold-down device, punching holes being aligned with one another in the joining parts.
• an annular recess 8 is embossed into the lower joining part 3a or 3b with the aid of a corresponding die around the shaft 5, which causes the material of the lower joining part 3a or 3b to be pressed into the shaft grooves 6 with plastic deformation and fills it out.
• the punched embossed rivet 1 consists of a zirconium oxide reinforced aluminum oxide ceramic with a zirconium oxide content of more than 60% by weight and a material density of more than 5.2 kg / dm 3 .
• the invention is not limited to the multi-area rivet shown in the drawing and described in detail.
• the grooves can also run over the entire shaft.
• the punch-embossed rivet can also have only one shaft groove.
• the shaft groove can also be rounded or trapezoidal instead of the notch shape.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Composite Materials (AREA)
• Ceramic Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Structural Engineering (AREA)
• Organic Chemistry (AREA)
• Insertion Pins And Rivets (AREA)
• Connection Of Plates (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=32519952

Family Applications (1)

Country Status (10)

Families Citing this family (7)

Citations (4)

Family Cites Families (10)

• 2003
  • 2003-01-14 DE DE10301114A patent/DE10301114A1/de not_active Withdrawn
  • 2003-12-05 CA CA002512739A patent/CA2512739C/en not_active Expired - Fee Related
  • 2003-12-05 BR BR0317960-5A patent/BR0317960A/pt not_active IP Right Cessation
  • 2003-12-05 ES ES03782312T patent/ES2275128T3/es not_active Expired - Lifetime
  • 2003-12-05 CN CN200380108798.1A patent/CN1738977A/zh active Pending
  • 2003-12-05 WO PCT/EP2003/013756 patent/WO2004063575A1/de not_active Ceased
  • 2003-12-05 EP EP03782312A patent/EP1588062B1/de not_active Expired - Lifetime
  • 2003-12-05 JP JP2004565956A patent/JP2006513377A/ja active Pending
  • 2003-12-05 AU AU2003289966A patent/AU2003289966A1/en not_active Abandoned
  • 2003-12-05 DE DE50305802T patent/DE50305802D1/de not_active Expired - Lifetime
• 2005
  • 2005-06-29 US US11/170,766 patent/US20050281632A1/en not_active Abandoned

Patent Citations (4)

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