EP0667175A2 - Méthode pour traiter les carres de skis etc. - Google Patents

Méthode pour traiter les carres de skis etc. Download PDF

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Publication number
EP0667175A2
EP0667175A2 EP95890006A EP95890006A EP0667175A2 EP 0667175 A2 EP0667175 A2 EP 0667175A2 EP 95890006 A EP95890006 A EP 95890006A EP 95890006 A EP95890006 A EP 95890006A EP 0667175 A2 EP0667175 A2 EP 0667175A2
Authority
EP
European Patent Office
Prior art keywords
plasma
running edge
steel
plasma jet
cathode
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.)
Granted
Application number
EP95890006A
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German (de)
English (en)
Other versions
EP0667175A3 (fr
EP0667175B1 (fr
Inventor
Gerhard Schwankhart
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.)
Fischer GmbH
Original Assignee
Fischer GmbH
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 Fischer GmbH filed Critical Fischer GmbH
Priority to SI9530148T priority Critical patent/SI0667175T1/xx
Publication of EP0667175A2 publication Critical patent/EP0667175A2/fr
Publication of EP0667175A3 publication Critical patent/EP0667175A3/fr
Application granted granted Critical
Publication of EP0667175B1 publication Critical patent/EP0667175B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/20—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for blades for skates
    • 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
    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • 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
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
    • C21D9/06—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails with diminished tendency to become wavy

Definitions

  • the invention relates to a method for machining steel edges for skis or the like.
  • the steel edge at least partially, vzw. at least in the area of the edge that delimits the outer sole of the ski, is rapidly heated and then rapidly cooled again.
  • a plasma torch As a source of energy for the rapid heating of the material, a plasma torch is also given purely by way of example, although there are no indications as to how uniform and / or precisely defined hardening can be achieved in a precisely defined area of the steel edge. Rather, the previous plasma torches are not suitable for hardening the steel edges of skis in the required, precisely definable manner over the entire length, which is why, despite the rapid developments in ski production technologies and the obvious advantage of partially hardened steel edges, this special technology has not been adopted by the industry and has not yet been used. Nevertheless, the use of plasma torches is known for hardening the cutting edges of saws, knives or punching tools, for example from AT-PS 392 483.
  • Other tasks include an exactly defined, partially hardened steel edge, a ski that is provided with such a steel edge, and a plasma head for producing an exactly defined, partially hardened steel edge.
  • an energy beam with precisely defined energy is used for rapid heating and the material is then preferably only cooled.
  • this feature ensures a precisely defined energy input into a precisely predeterminable area of the steel edge, which is a matter of course.
  • the heating rate and - depending on the material, but precisely determinable - the area covered by the hardening can be precisely defined. This is also an important prerequisite for the hardenability of steel edges already mounted on the ski. In these, it must be ensured that the heating of the steel edge material is not too strong to heat the adjacent material of the ski itself above a certain minimum temperature.
  • a plasma beam is advantageously used as the energy beam.
  • plasma rays have a particularly favorable energy-cost ratio and are insensitive to the surface properties of the material to be treated, such as color, dirt, reflectivity.
  • no protective gas is required when using plasma torches.
  • the temperature distribution in a plasma jet in the axial direction is considerably flatter than in the case of a laser beam, so that the exact positioning does not necessitate complex devices as is the case with the laser with the absolutely necessary precise adjustment of the focal point.
  • the plasma jet and the steel edge are moved relative to each other in the longitudinal direction of the steel edge and the plasma jet always has exactly the same energy at least over a portion of the length of the steel edge, this being preferably achieved by supplying the plasma head with exactly the same current
  • a uniform, precisely defined hardening is guaranteed over the entire length of the swept longitudinal area of the steel edge. This ensures that the steel material has the same material properties along the entire hardened length of the steel edge during any reworking of the steel edge, for example during uniform grinding, and that undesired hardened and unhardened sections do not occur in an unpredictable sequence.
  • the feature that the plasma jet always has exactly the same energy is associated with the fact that at every point of the plasma mastrahls always have exactly the same temperature at all times, ie the temperature distribution in the plasma beam remains constant.
  • Plasma jet and the steel edge are moved relative to each other in the longitudinal direction of the steel edge and the plasma jet has a preferably regularly variable energy at least over a portion of the length of the steel edge, this being preferably achieved by regularly changing the current intensity supplied to the plasma head.
  • Variable energy means that the temperature changes in the same direction at every point in the plasma jet and in a precisely predictable or determinable manner.
  • a laser beam is used as the energy beam and the steel edge and the laser beam are moved relative to one another.
  • the energy beam preferably the plasma beam
  • the axis of the beam preferably obliquely onto both outer sides, in particular in a region of 25 ⁇ m the angular symmetry, especially precisely aligned in the angular symmetry.
  • a symmetrical or asymmetrical hardening zone and thus an adaptation to special wear situations or purposes can be achieved.
  • a symmetrical hardness zone of the outer edge the shape of which is retained for as long as possible even in the case of post-processing, can be produced with the alignment of the energy beam, and preferably the plasma beam, which preferably coincides exactly with the axis of symmetry of the outer edge.
  • a particularly advantageous variant of the method according to the invention provides that a steel edge already mounted on the ski is quickly heated by means of the energy beam and the area around the area of impact of the energy beam is cooled to such an extent that in the transition area of the steel edge ski, preferably the release temperature of the adhesive for fastening the Steel edge on the ski body is not exceeded.
  • the hardening of the steel edges can be provided as the last step in the production of skis, since the hardening according to the invention does not adversely affect other ski components and therefore no further post-treatment steps are necessary. This means that the steel edges already installed are not exposed to any mechanical stress, no risk of damage and no impairment of function, as is the case with hardening before assembly on the ski.
  • the heating of the material of the areas of the ski surrounding the steel edge contributes to the self-deterrence of the area heated by the energy beam and thus to the hardening process due to the heat dissipation, so that less thermal energy has to be dissipated in a different, more complex and costly manner. It is only necessary to ensure that the temperature does not rise so high that the adhesive used to fix the steel edges is loosened or decomposed.
  • the impact area of the energy beam in the direction of the longitudinal direction of the steel edge is at least virtually, preferably by electromagnetic, according to a further feature of the invention Deflection of the plasma beam, widened.
  • the diameter of the plasma jet itself is not increased, which would possibly disturb the parameters that are absolutely necessary for uniform temperature and energy distribution, but that by a kind of serpentine guidance of the point of impact at a high frequency or a "trembling movement" of the point of impact by one
  • a larger area is swept over the central axis during the relative movement of the plasma head and the steel edge than corresponds to the cross section of the plasma beam.
  • the virtual expansion can take place in any or any direction perpendicular to the axis of the plasma beam.
  • this variant also offers the advantage of slowing down the very rapid heating of the material by the plasma jet due to the distribution of the energy and thus, if necessary, to achieve a lower hardness than would correspond to the energy of the plasma beam. Since the area available for virtual widening is usually limited at the outer edges of the steel edge or only hardening in a narrow area around the edge which is at risk of wear is desired, widening advantageously takes place in the longitudinal direction of the steel edge.
  • the virtual expansion can of course also be used for the variant with laser beams be detected, the point of impact being able to be guided in the manner described above for plasma rays, for example by means of a pivotable lens system.
  • the laser can also be widened by defocusing.
  • the physical cross section of the energy beam itself can also be expanded, preferably in the direction of the longitudinal direction of the steel edge. This enables the energy introduced to be distributed over a larger area and yet in a very narrow area around the actual edge of the steel edge to be hardened.
  • a feature that is particularly important for the uniformity of the energy output of the plasma head is that the gas flow around the cathode of the plasma head is kept laminar. In the case of a laminar flow, the temperature distribution in the plasma jet is particularly precisely defined in the desired manner at every point. In addition, however, there is the advantage that the plasma head can be ignited by a sinus pulse and, with little or simple shielding, surrounding electronic components are not influenced by the plasma head. This is particularly important in the automated implementation of the method according to the invention using industrial robots or similar, microprocessor-controlled systems.
  • the invention also relates to a steel edge for skis or the like, which is partially hardened according to a method described in the preceding paragraphs.
  • a particularly deep hardening of the steel edge can be achieved very economically, particularly in the plane of symmetry of the outer edge, which is at risk of wear, resulting in a hardening zone which is essentially triangular in cross section.
  • Other hardening processes such as using a laser, do not penetrate so deeply, so that there is a hardening zone that only extends to a small depth along the outer sides of the steel edge and has an approximately L-shaped cross section.
  • the invention also relates to a ski which is provided with an at least partially hardened steel edge which was produced in accordance with a method described in one of the preceding paragraphs.
  • the invention further relates to a plasma head for hardening edges on steel materials, in particular for carrying out the method according to one of the preceding paragraphs, with a housing divided by insulating material, devices for supplying a gas, a round-bar-shaped cathode around which the gas flows and one end of the cathode surrounding anode with an opening for the exit of the plasma jet.
  • This plasma head is characterized according to the invention by a bushing provided with radial bores for supplying the gas around the cathode, preferably made of insulating material, which bushing leaves an annular gap around the cathode.
  • the inside of the socket, together with the outside of the cathode defines an annular entry and equalization area for the gas of the plasma torch, which favors the setting of a laminar flow, which is important for the uniformity of the plasma jet.
  • the annular gap remaining free between the bushing and the cathode has a height to width ratio of essentially 2: 1.
  • the plasma head is characterized by a tungsten-zirconium cathode. This material ensures uniform discharge between the cathode and anode and, as a result, a uniform temperature and energy distribution in the emerging plasma jet.
  • This very small angle which is measured between the mutually symmetrical opposite sides of the preferably radially symmetrical cathode, ensures that the cathode gently approaches the tip, as a result of which the flow of the gas remains laminar and the plasma jet remains uniform.
  • the cathode advantageously ends bluntly, preferably in a flat surface that is normal to the cathode axis. This design of the cathode end enables an optimal tearing off of the gas flow at the end of the cathode with the least possible influence on the laminar flow characteristic.
  • the opening in the anode is in the form of an elongated hole, the longer diameter preferably being aligned in the longitudinal direction of the steel edge.
  • This shape of the outlet opening for the plasma jet from the plasma head causes a physical expansion of the plasma jet in the direction of the longer diameter and thus a distribution of the energy over a larger area of the steel edge, preferably over a longitudinal area thereof. This is accompanied by a slower heating of the material, which - if desired - leads to a lower hardness of the partially hardened part of the steel edge.
  • devices for electromagnetic deflection of the plasma jet are provided in the region of the outlet opening for the plasma jet in order to achieve the same effects according to a further feature of the invention.
  • the invention also relates to a device for hardening the edges of steel materials, in particular for carrying out the method according to the invention, with at least one laser or plasma head, preferably two laser or plasma heads, as described in one of the preceding paragraphs, and devices for guiding the or each Laser or plasma head and the steel edge or the ski provided with a steel edge to be hardened relative to one another in the longitudinal direction of the steel edge.
  • the device is advantageously characterized by preferably liquid-cooled heat sinks, preferably made of copper, which are guided at a distance from the steel edge or the ski body, preferably at a distance of 0.2 to 0.3 mm.
  • the heat sinks dissipate the amount of heat that can no longer be absorbed by the ski body without a predetermined temperature, preferably the release temperature of the adhesive fixing the steel edges, being exceeded.
  • a cooling liquid water with a maximum of about 20 ° C has emerged as the cheapest solution and as a material for the production of the cooling elements, copper is the most advantageous choice for the rapid dissipation of large amounts of heat.
  • the heat sinks are not placed directly on the steel edge or the surface of the ski and guided along in contact with them, but are guided at a short distance from the steel edge and / or ski.
  • three guide devices 2 for the ski (not shown) are provided which, in a manner known per se, preferably capable of being automated, guide the ski sideways in an exact manner, i. H. guarantee to the tenth of a millimeter.
  • adjustable guide rollers 3 are arranged on both sides of the transport path of the ski.
  • the ski to be treated is conveyed through the system by means of a conveyor belt 4 which is set in motion by a drive roller 5a driven by a precisely controllable motor 5.
  • the conveyor belt 4 runs over the deflection rollers 6a to 6f and is such that a frictional connection with preferably the tread of the ski can be created by friction.
  • the two rollers 7 and 8 serve perpendicularly to the plane within which the ski is guided by the guide rollers 3.
  • the lower support roller 7, on which the ski rests with the tread, can be freely rotated on a stationary or at least exactly fixable axis stored and made of very hard material, preferably steel.
  • the ski is pressed against the lower support roller 7 by means of the pressure roller 8 at the top, which is at least provided with a relatively soft, elastic circumferential coating 8a, in particular also the prestressing of the ski in its central region - which causes the ski to bulge between its front and rear support lines - must be overcome.
  • a pressure of the ski on the conveyor belt 4 arises, which pressure also contributes to the creation of the non-positive connection based on the friction between the tread and the conveyor belt 4.
  • the pressure roller 8 is adjustable in height, if necessary guided in a resiliently movable manner perpendicular to the ski, in order to allow the unhindered passage of the ski's shovel and its insertion or removal from the device.
  • S denotes the ski which is already provided with the steel edges K to be hardened and which is pressed by the pressure roller 8 onto the support roller 7.
  • a device 9 for generating the energy beam for heating the respective steel edge K is provided on both sides of the ski S, since this ensures faster and therefore more economical processing than the arrangement of only one device 9 on one side of the ski S, which is nevertheless possible.
  • the devices 9 are carried on support structures 10, for example microprocessor-controlled robot arms, these support structures 10 advantageously being - as symbolized by the arrows in the lower part - movably supported parallel to the axis of the support roller 7.
  • the movement described is controlled by the contact rollers 11, which are also provided on each support structure 10, which contact rollers 11 are monitored by suitable sensors, and the support structures 10 are controlled in such a way that the contact rollers 11 always have the same pressure on the steel edge K issue.
  • the contact rollers 11 For the sake of clarity, only one contact roller 11 has been drawn on the left side of the ski S in FIG. 3, so that detail IV, shown enlarged in FIG. 4, can be clearly shown in connection with the support structure 10 and the entire device on the right.
  • This detail IV shows liquid-cooled heat sinks 12 which protect the material of the components of the ski S surrounding the edge K from excessive heating by the energy beam E of the device 9.
  • the cooling liquid preferably water with a maximum temperature of approximately 20 ° C.
  • These heat sinks 12 cover a longitudinal area from a few centimeters to about 30 cm in front of and behind the area where the energy beam strikes E from. As is clearly shown in FIG.
  • the heat sinks 12, which are also carried by the support structure 10, do not lie against the ski S or the edge K, but are in any case spaced from them, preferably between 0.2 to 0.3 mm, which if damage or impairment of the materials is avoided, for example by scratching, which nevertheless ensures adequate heat dissipation.
  • the plasma head 9 shown comprises a two-part housing comprising an upper part 13 and a lower part 14, which parts 13 and 14 are separated from one another in an electrically insulated manner by an insulating material 15.
  • One connecting element 16 or 17 each on the upper part 13 or lower part 14 is provided for supplying or discharging cooling medium for the plasma head 9 into the passage 17.
  • a cathode 18 can be exchangeably fixed in a conventional holder 19 in a manner known per se.
  • this space 23 is closed by the holder 19 of the cathode 18, while it continues opposite in the annular gap 24 between the cathode 18 and the anode 20 and further the outlet opening 21.
  • the gas to be ionized is conducted through a line 25, which opens into the plasma head 9 in front of or behind the cutting plane, through an annular gap 26 around the bushing 22 and further through radial bores 27 into the entry and equalization space 23.
  • helium or nitrogen but preferably argon in an amount of 0.5 to 5 l / min is used as the gas to be ionized, a particularly stable plasma with a protective gas effect being achieved with argon.
  • a laminar flow of the gas is along for the uniform energy of the plasma jet the cathode 18 of particular importance.
  • a gas flow that is laminar towards the tip of the cathode 18 is generated.
  • the tip of the cathode 18 converges at a very small angle ⁇ between 10 and 300, preferably 20 ° , in order to keep the flow as laminar as possible.
  • Another feature in order to transmit the gas flow in a laminar manner consists in a flat end surface 28, preferably oriented on the axis of the cathode 18, preferably with a diameter of 0.3 mm, which acts as a kind of tear-off edge for the controlled separation of the gas flow from the cathode 18.
  • the laminar flow of the gas has, in addition to the uniform energy of the plasma jet and in connection with the special choice of material for the cathode 18, the additional advantage that the ionizing discharge between the cathode 18 and the anode 20 does not require a hard rectangular pulse, but is ignited with a soft sine pulse can.
  • the current intensity during the stable operating phase of the plasma torch 9 is between 20 and 180 A.
  • the power of the energy beam is preferably between 1 and 5 kW, in particular 2 kW per unit 9.
  • the energy input by the energy beam E can be distributed over a larger area of the steel edge K.
  • the physical cross section of the beam itself can also be expanded.
  • anode 20 of the plasma head 9 instead of the anode 20 of the plasma head 9 with a circular outlet opening 21, preferably with a diameter of 0.5 to 3 mm, an anode 20 'corresponding to that shown in FIGS. 6a and 6b with an elongated hole or oval outlet opening 21' between values of 0.6 x 2 mm to 2.5 x 5 mm, preferably 1 x 3 mm.
  • the outlet opening 21 ' is oriented such that the longer diameter lies parallel to the longitudinal axis of the steel edge K. The heating and quenching is therefore slower and the hardness remains in the range of 57 to 60 Rockwell desired for the specific application. Round outlet openings in the anodes always result in higher hardness due to the faster cooling.
  • the energy beam E is preferably directed obliquely toward the steel edges K to be hardened with respect to both outer surfaces thereof.
  • the beam E is preferably directed in the manner shown in FIG. 3 or more clearly in FIG. 4 in a range of approximately 25 ° around the plane of symmetry, advantageously precisely in the plane of the angular symmetry, of the outer edge of the steel edge K to be hardened. This allows the shape of the hardened area within the steel edge to be influenced, the greatest hardening depth being achieved directly in extension of the energy beam E. The greater the radial distance from the axis of the energy beam E, the smaller the depth of hardening.
  • the laser beam has to be painted over on both side surfaces in order to be able to cover a surface area of a similar size to that of the plasma beam, but nevertheless, particularly in the actual edge region, the depth of the hardening does not reach that of the plasma beam.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Arc Welding In General (AREA)
  • Heat Treatment Of Articles (AREA)
EP95890006A 1994-01-17 1995-01-11 Méthode pour traiter les carres de skis etc. Expired - Lifetime EP0667175B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530148T SI0667175T1 (en) 1994-01-17 1995-01-11 Method for treating edges of skis etc.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT80/94 1994-01-17
AT0008094A AT404798B (de) 1994-01-17 1994-01-17 Verfahren zum härten von stahl-laufkanten für ski sowie plasmakopf zur härtung von kanten bei stahlmaterialien und vorrichtng zur härtung von kanten bei stahlmaterialien

Publications (3)

Publication Number Publication Date
EP0667175A2 true EP0667175A2 (fr) 1995-08-16
EP0667175A3 EP0667175A3 (fr) 1996-08-28
EP0667175B1 EP0667175B1 (fr) 1998-10-21

Family

ID=3481006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890006A Expired - Lifetime EP0667175B1 (fr) 1994-01-17 1995-01-11 Méthode pour traiter les carres de skis etc.

Country Status (6)

Country Link
EP (1) EP0667175B1 (fr)
JP (1) JPH07250932A (fr)
AT (2) AT404798B (fr)
CA (1) CA2140310A1 (fr)
DE (1) DE59503963D1 (fr)
SI (1) SI0667175T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718013A3 (fr) * 1994-12-23 1997-08-06 Fischer Gmbh Procédé de traitement des carres de skis etc.
RU2644638C2 (ru) * 2016-01-26 2018-02-13 Общество с ограниченной ответственностью "Транс-Атом" Способ термической обработки стальных рельсов

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941660A1 (de) * 1968-08-23 1970-06-11 Boehler & Co Ag Geb Stahlkanten fuer Schi
US3802927A (en) * 1970-09-14 1974-04-09 N Gomada Apex seal for rotary piston engine and method of producing same
DE2435446A1 (de) * 1974-07-23 1976-06-16 Hollingsworth Gmbh Verfahren und vorrichtung zum haerten von drahtfoermigen werkstuecken
WO1991001386A1 (fr) * 1989-07-25 1991-02-07 Albert Schuler Procede de trempe des bords tranchants de scies, couteaux et outils de decoupage
DE4000744A1 (de) * 1990-01-12 1991-07-18 Trumpf Gmbh & Co Verfahren fuer stahlkanten von skiern oder dergleichen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE446316B (sv) * 1978-07-11 1986-09-01 Gpnii Nikel Kobalt Olov Promy Forfarande for plasmabehandling
JPS60501450A (ja) * 1983-03-25 1985-09-05 ボブロフ　アレクサンドル　ブラデイミロビツチ サ−モメカニカル機械加工法
AT392483B (de) * 1989-07-25 1991-04-10 Schuler Albert Verfahren zum haerten der schneidkanten von saegen
DE4042349A1 (de) * 1990-06-08 1991-12-19 Fraunhofer Ges Forschung Verfahren zur oberflaechenbehandlung von werkstuecken mit laserstrahlung
US5313042A (en) * 1991-06-07 1994-05-17 Nissan Motor Co., Ltd Laser hardening device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941660A1 (de) * 1968-08-23 1970-06-11 Boehler & Co Ag Geb Stahlkanten fuer Schi
US3802927A (en) * 1970-09-14 1974-04-09 N Gomada Apex seal for rotary piston engine and method of producing same
DE2435446A1 (de) * 1974-07-23 1976-06-16 Hollingsworth Gmbh Verfahren und vorrichtung zum haerten von drahtfoermigen werkstuecken
WO1991001386A1 (fr) * 1989-07-25 1991-02-07 Albert Schuler Procede de trempe des bords tranchants de scies, couteaux et outils de decoupage
DE4000744A1 (de) * 1990-01-12 1991-07-18 Trumpf Gmbh & Co Verfahren fuer stahlkanten von skiern oder dergleichen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718013A3 (fr) * 1994-12-23 1997-08-06 Fischer Gmbh Procédé de traitement des carres de skis etc.
RU2644638C2 (ru) * 2016-01-26 2018-02-13 Общество с ограниченной ответственностью "Транс-Атом" Способ термической обработки стальных рельсов

Also Published As

Publication number Publication date
EP0667175A3 (fr) 1996-08-28
AT404798B (de) 1999-02-25
CA2140310A1 (fr) 1995-07-18
DE59503963D1 (de) 1998-11-26
JPH07250932A (ja) 1995-10-03
ATE172381T1 (de) 1998-11-15
EP0667175B1 (fr) 1998-10-21
ATA8094A (de) 1997-09-15
SI0667175T1 (en) 1999-02-28

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