EP0601024B1 - Verfahren für die herstellung einer skikante - Google Patents

Verfahren für die herstellung einer skikante Download PDF

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Publication number
EP0601024B1
EP0601024B1 EP92918428A EP92918428A EP0601024B1 EP 0601024 B1 EP0601024 B1 EP 0601024B1 EP 92918428 A EP92918428 A EP 92918428A EP 92918428 A EP92918428 A EP 92918428A EP 0601024 B1 EP0601024 B1 EP 0601024B1
Authority
EP
European Patent Office
Prior art keywords
edge profile
edge
temperature
heating
flank
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.)
Expired - Lifetime
Application number
EP92918428A
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German (de)
English (en)
French (fr)
Other versions
EP0601024A1 (de
Inventor
Hans-Toni Junius
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.)
Cd Walzholz Produktions-Gesellschaft Mbh
Original Assignee
Cd Walzholz Produktions-Gesellschaft Mbh
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Publication date
Application filed by Cd Walzholz Produktions-Gesellschaft Mbh filed Critical Cd Walzholz Produktions-Gesellschaft Mbh
Publication of EP0601024A1 publication Critical patent/EP0601024A1/de
Application granted granted Critical
Publication of EP0601024B1 publication Critical patent/EP0601024B1/de
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/048—Structure of the surface thereof of the edges
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/04—Accessories for skiing or snowboarding for treating skis or snowboards
    • A63C11/06—Edge-sharpeners
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/056—Materials for the running sole

Definitions

  • Ski edges produced according to this process have the advantage on the one hand that the head is very hard over the entire cross section by forming a martensitic structure, so that a long life of the ski edge without resharpening results.
  • the flank is returned to an essentially pearlitic structure by the partial heating, so that this flank is relatively soft and ductile and can accordingly be machined by punching with little tool wear.
  • the invention proposes starting from the method of the type mentioned that when the entire edge profile is tempered, the deviation in the Rockwell hardness across the cross section and the length of the edge profile is set to less than 2 ° HRC, that the heating temperature and the heating duration during the partial heating of the flank is kept constant over the length of the edge profile and that the edge profile is subjected to a constant bending deformation after the partial heating and before punching, in which the flank is stretched by a constant amount.
  • the invention is based on the knowledge that the inevitable saber deviations are essentially the result of volume changes which occur when the martensitic structure changes to a ferritic / pearlitic structure.
  • the transition from martensitic to ferritic / pearlitic microstructure of a carbon steel results in a volume contraction, which in the present case - since post-treatment on the edge profile only takes place on one side in the area of the flank - inevitably leads to strong saber formation. If you now ensure by means of a corresponding heat treatment that, on the one hand, the deviations in the Rockwell hardness - that is, when tempering the entire edge profile. H.
  • the very uniform formation of martensite in the edge profile before partial heating can be achieved, for example, by performing a multi-stage continuous tempering when tempering the entire edge profile, in which the edge profile is first ruggedly heated to a temperature just above the martensite in a continuous metal bath.
  • Starting temperature (Ms) is cooled, then a structural transformation of the austenitic structure formed during the cooling of the rug into the martensitic structure slow cooling is carried out under an air shower and then a tempering treatment is carried out under protective gas.
  • Ms Starting temperature
  • a structural transformation of the austenitic structure formed during the cooling of the rug into the martensitic structure slow cooling is carried out under an air shower and then a tempering treatment is carried out under protective gas.
  • the explained multi-stage coating leads to a very uniform martensitic structure, which is largely free of internal stresses.
  • the metal bath quenching and tempering under protective gas have the effect that oxidation phenomena on the profile surfaces are avoided. The latter is important for the subsequent uniform heating
  • the abraded cooling mentioned above is expediently carried out in a lead bismuth continuous bath with a constant temperature of in particular 350 ° C.
  • a particularly good quality ski edge that can be stamped with low tool wear results if the entire edge profile is tempered to a Rockwell hardness of 50 ° - 60 ° HRC and the hardness of the flank is reduced to 30 ° - 40 ° HRC by partial heating.
  • the edge profile is designated in its entirety with reference number 1. It consists of a head 2, which has the tread 3 and a flank 4, which is thinner than the head 2 and serves to anchor the edge profile 1 in the body of the ski.
  • the flank 4 is provided with punched recesses 5 (FIG. 2) or openings 6 (FIG. 4) which, when the edge profile 1 is fastened in the body of the ski, for better toothing and anchoring to serve.
  • the recesses 5 and the openings 6 can also have a different shape.
  • the entire edge profile 1 consists of a hardenable steel, which is hardened by the method according to the invention in the area of the head 2 over its entire volume to a high hardness, for example a Rockwell hardness of 50 ° -60 ° HRC, while the flank 4 is reduced to, for example, 30 ° -40 ° HRC by additional partial tempering.
  • a high hardness for example a Rockwell hardness of 50 ° -60 ° HRC
  • the flank 4 is reduced to, for example, 30 ° -40 ° HRC by additional partial tempering.
  • the device for carrying out the method according to the invention shown in FIGS. 5 and 6 consists of a profile rolling mill 7 or a corresponding profile drawing system, in which the continuous edge profile 1 receives the correct profile shape.
  • the edge profile 1 then passes through a tempering system 8, in which the edge profile 1 is tempered uniformly over its entire cross-section by heating to the supercritical temperature and then quenching and tempering, to a relatively high degree Hardness that corresponds to the final hardness of the head 2.
  • Quenching in the tempering system 8 takes place in a continuous metal bath which contains a liquid lead-bismuth melt at a constant temperature, preferably about 350 ° C. This temperature is just above the martensite start temperature (M s ).
  • an essentially austenitic structure is formed in the edge profile 4.
  • the edge profile is then slowly cooled under an air shower, the austenitic structure previously formed during the rugged cooling process being converted into a largely homogeneous martensitic structure.
  • the edge profile 1 is then left under a protective gas to a relatively low tempering temperature in order to set the desired material properties exactly.
  • the multi-stage coating explained above results in a largely uniform hardness over the cross-section and over the length of the edge profile 1.
  • the deviations in the Rockwell hardness over the cross-section and the length of the edge profile 1 are at most 2 ° HRC.
  • the amount of heat introduced in this process is regulated constantly in order to obtain a uniform bend over the length of the edge profile 1. Only then is it possible to precisely align the material after partial tempering.
  • the continuous system shown in FIG. 6 for the additional partial starting of the flank 4 has two, for example, water-cooled cooling boxes 10a and 10b, which leave a passage opening 11 between them. whose cross-sectional shape is adapted to the cross-sectional shape of the head 2.
  • the cooling surfaces of the passage opening 11 lie against the head 2 from three sides and leave the flank 4 free, ie uncooled.
  • a heating device 12 is assigned to the section of the flank 4 which remains uncooled.
  • This heating device 12 can be a precisely controllable gas burner, an induction coil or a radiant heater, in particular a laser heater.
  • Conductive heating is also possible, for example heating in a suitably shielded metal bath or by means of a radiator which is brought into contact with the flank 4 of the edge profile 1.
  • the passage opening 11 is shaped such that the transition region 4a between the head 2 and the flank 4 is still cooled. This results in a transition region 4a between the head 2 which remains hard and the additionally tempered flank 4, the hardness of which lies between that of the head 2 and the flank 4.
  • the throughput speed v of the edge profile 1 and the heat supply Q through the heating device 12 are coordinated with one another in such a way that the heating temperature and the heating duration - and thus the formation of a pearlitic structure - in the flank 4 - are kept constant over the length of the edge profile 1.
  • the continuous system 9 for the additional partial starting of the flank 4 is also followed by a device 13 for slow and controlled cooling of the flank 4.
  • the finished heat-treated edge profile 1 is subsequently subjected to a bending deformation in a bending device 14, in which the flank 4 is stretched by a uniform amount.
  • a bending deformation As a result of this bending deformation, the uniform curvature of the edge profile 1 which forms when the inner edge part is partially heated is reversed.
  • the finished heat-treated and directed edge profile 1 is provided with the recesses 5 and / or openings 6 in a stamping unit 15. This process takes place either immediately after the heat treatment or, if appropriate, at another manufacturing facility, for example at the manufacturing facility of the ski manufacturer. Since the flank 4 to be provided with the recesses 5 or openings 6 has only a low hardness, the tool wear in this punching process is very low.
  • FIG. 5 The system components shown schematically in FIG. 5 can be installed in a production facility in a continuous production line. However, they can also be used at different production sites, as is symbolized in FIG. 5 by the parallel dividing lines in the flow arrows.

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  • Heat Treatment Of Articles (AREA)
EP92918428A 1991-08-28 1992-08-26 Verfahren für die herstellung einer skikante Expired - Lifetime EP0601024B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4128410 1991-08-28
DE4128410 1991-08-28
DE4218099 1992-06-02
DE4218099A DE4218099A1 (de) 1991-08-28 1992-06-02 Verfahren fuer die herstellung einer skikante
PCT/EP1992/001958 WO1993004742A1 (de) 1991-08-28 1992-08-26 Verfahren für die herstellung einer skikante

Publications (2)

Publication Number Publication Date
EP0601024A1 EP0601024A1 (de) 1994-06-15
EP0601024B1 true EP0601024B1 (de) 1995-03-01

Family

ID=25906739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92918428A Expired - Lifetime EP0601024B1 (de) 1991-08-28 1992-08-26 Verfahren für die herstellung einer skikante

Country Status (6)

Country Link
US (1) US5451276A (enrdf_load_stackoverflow)
EP (1) EP0601024B1 (enrdf_load_stackoverflow)
JP (1) JP3283513B2 (enrdf_load_stackoverflow)
AT (1) ATE119052T1 (enrdf_load_stackoverflow)
DE (1) DE4218099A1 (enrdf_load_stackoverflow)
WO (1) WO1993004742A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501171B1 (de) * 2001-05-16 2007-01-15 Stahlwerk Ergste Westig Gmbh Gleitkantenprofil für wintersportgeräte

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9421237U1 (de) * 1994-07-15 1995-08-03 C.D. Wälzholz Poduktions-Gesellschaft mbH, 58093 Hagen Halbzeug für die Herstellung von Skikanten
DE19808276C2 (de) * 1998-02-27 2003-12-24 Stahlwerk Ergste Westig Gmbh Stahllegierung für Gleitelemente
NZ510837A (en) * 1999-01-07 2002-12-20 Walter Stucki Safety edge for skis and snowboards where the safety edge has a cross section that varies along its length to form indentations or protrusions
US6918224B2 (en) 2002-05-01 2005-07-19 Benteler Automotive Corporation Heat treatment strategically strengthened door beam
FR2916649B1 (fr) * 2007-06-01 2010-02-19 Salomon Sa Planche de glisse a carres laterales

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1289011A (fr) * 1961-04-12 1962-03-30 British Iron Steel Research Procédé de traitement thermique continu d'éléments métalliques longs en mouvement
US3508978A (en) * 1966-03-31 1970-04-28 Nippon Musical Instruments Mfg Process for manufacturing ski edges with l-shaped cross section
AT307951B (de) * 1971-02-18 1973-06-12 Deutsch Friedrich Verfahren zur Herstellung eines Stahlbeschlagteiles für Schier, insbesondere einer Stahlkante und nach diesem Verfahren hergestellter Stahlbeschlagteil
EP0031399A3 (en) * 1979-07-30 1981-11-25 Consultronic (Int.)Ltd. Material for the production of stainless alpine ski edges
BE896347A (fr) * 1983-03-31 1983-09-30 Ct De Recheches Metallurg Ct V Procede pour l'amelioration de la qualite des profiles en acier
US4818839A (en) * 1985-06-12 1989-04-04 K-2 Corporaton Process for treating the metal edge of a ski
US4987282A (en) * 1985-06-12 1991-01-22 K-2 Corporation Snow ski with treated metal edge
US5204987A (en) * 1990-01-12 1993-04-20 Hans Klingel Apparatus for treating steel edges of skis and other runner devices
DE4000744C2 (de) * 1990-01-12 1996-07-11 Trumpf Gmbh & Co Verfahren für Stahlkanten von Wintersportgeräten
FR2680698B1 (fr) * 1991-09-04 1993-12-03 Salomon Sa Procede permettant d'ameliorer l'elasticite de la carre d'un ski.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501171B1 (de) * 2001-05-16 2007-01-15 Stahlwerk Ergste Westig Gmbh Gleitkantenprofil für wintersportgeräte

Also Published As

Publication number Publication date
WO1993004742A1 (de) 1993-03-18
JPH07500739A (ja) 1995-01-26
ATE119052T1 (de) 1995-03-15
JP3283513B2 (ja) 2002-05-20
EP0601024A1 (de) 1994-06-15
DE4218099C2 (enrdf_load_stackoverflow) 1993-08-05
US5451276A (en) 1995-09-19
DE4218099A1 (de) 1993-03-04

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