EP1800785A1 - Scie à cadre pour la coupe de la pièrre et ébauche pour sa fabrication - Google Patents

Scie à cadre pour la coupe de la pièrre et ébauche pour sa fabrication Download PDF

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Publication number
EP1800785A1
EP1800785A1 EP05028371A EP05028371A EP1800785A1 EP 1800785 A1 EP1800785 A1 EP 1800785A1 EP 05028371 A EP05028371 A EP 05028371A EP 05028371 A EP05028371 A EP 05028371A EP 1800785 A1 EP1800785 A1 EP 1800785A1
Authority
EP
European Patent Office
Prior art keywords
slots
strip
carrier
starting material
stone
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.)
Withdrawn
Application number
EP05028371A
Other languages
German (de)
English (en)
Inventor
Gregor Innitzer Dipl.-Ing.
Erich Lohmann Dipl.-Ing.
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.)
Voestalpine Precision Strip GmbH
Original Assignee
Voestalpine Precision Strip 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 Voestalpine Precision Strip GmbH filed Critical Voestalpine Precision Strip GmbH
Priority to EP05028371A priority Critical patent/EP1800785A1/fr
Priority to PCT/EP2006/012538 priority patent/WO2007076997A1/fr
Publication of EP1800785A1 publication Critical patent/EP1800785A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/123—Details of saw blade body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/127—Straight, i.e. flat, saw blades; strap saw blades

Definitions

  • the present invention relates to a stone plow saw, in particular for processing light stone types, and a starting material for producing such a stone plow saw.
  • Stone coffin saws generally comprise a strip-shaped carrier made of a strip steel, on the one edge of which cutting segments are arranged, for example the diamond segments known to the person skilled in the art.
  • the steel beam is clamped at its two ends with a high tension, which can correspond to several tons of weight, to ensure that the cut does not go.
  • the Chromex-LS wood frame saw from the company Martin Miller from Traismauer, Austria, first introduced in 1990, has cuts in the saw blade in order to achieve better lateral stability of the saw blade.
  • the introduction of cuts is also from the EP 0 879 683 A2 known, but not to improve the lateral stability or tilt stability of stone pitter saw, but to reduce the noise due to vibration during sawing.
  • a damping plastic material can additionally be arranged in said slots.
  • steel grades are used for the steel strip carrier in these prior art saw blades, but not disclosed and for the explained purpose (wood saw or noise reduction) also without meaning.
  • Currently available saws with slots in the saw blade are made exclusively from martensitic steel grades because of their high stability (see below).
  • insertion of slots also reduces the tensile and flexural strength of the saw blade and is therefore undesirable.
  • it can occur in shegebändem, which are shipped rolled up for plastic deformation of the weakened cross-sections, which later adversely affect the straightness of the saw blade.
  • Stone sawing uses water to cool and lubricate the saw blade.
  • martensitic steels tend to be corrosive, especially after repeated soldering with the cutting segments, if necessary. This leads in particular when cutting light stone types, such as high-quality marble, to rust-contaminated cut surfaces, which penetrate deep into the stone due to the capillary action and can not be removed later.
  • fissure cracking or stress corrosion cracking can result, which leads due to the cyclic load during stone sawing in no time to break the saw blade.
  • the present invention is therefore based on the problem of providing a starting material for a stone pitter saw and a stone plow saw, so that at low cost with a good lateral or tilt stability and high corrosion resistance is achieved to allow easy processing of light stone types.
  • the present invention solves this problem by a precursor material for a stone cedar saw, in particular for processing light types of stone, comprising a strip steel carrier with a plurality of slots in the median strip of the strip steel carrier, wherein the strip steel carrier is essentially made of an austenitic steel.
  • the present invention is based on the surprising idea to solve the corrosion problem by the use of a steel grade, which is in principle unsuitable for the usual bias of the tape center strip. Austenitic steel grades are not curable in the usual way and lose an introduced bias significantly faster than martensitic steel grades.
  • austenitic strip steel is much more complicated than martensitic.
  • the introduction of a bias in the belt center strip leads in austenitic strip steel often to the loss of set by straightening strip shape.
  • pre-stressing adversely affects the straightness of the steel strip. Therefore, such prestressed austenitic strip steels can not be used on stone saws.
  • austenitic steel for the precast material of a stone-saw saw ensures that it does not lead to corrosion and thus to contamination of the cut stone. This is of particular advantage when using a stone coffin saw according to the invention for processing bright stone types.
  • Another advantage is the easier handling.
  • the saw blade can be leveled without a subsequent processing to produce the explained residual stress (rollers, etc) adversely affect the flatness or flatness.
  • cutting segments are easier on a steel beam austenitic steel braze or weld than on the steel types used so far, as it can not lead to embrittlement at the solder joint.
  • the corrosion resistance of the austenitic steel prevents splitting or stress corrosion cracking. This increases the life of the stone saw.
  • austenitic steel grades are comparatively cheap.
  • the slots are preferably arranged asymmetrically in the band steel carrier.
  • the center of the slots 5 - 10%, preferably about 7% of the width of the strip steel carrier offset from the longitudinal axis or center of the strip steel carrier. This results in a segment zone with a larger cross-section for attachment of the cutting segments and a peripheral zone on the opposite side with a smaller cross-section. The higher loaded segment zone is therefore reinforced.
  • the slots have an elliptical shape due to the elliptical shape of the slots arise under load only small stress peaks at the slots, so that the starting material and the stone cedar saw despite weakening of the center strip have a high tensile strength.
  • the slots are arranged inclined to the longitudinal axis of the strip steel carrier.
  • the slots are 25 ° - 50 °, more preferably about 30 °, arranged inclined to the longitudinal axis of the strip steel carrier. Due to the inclination, especially in this angular range, a plastic buckling of the starting material and the stone cedar saw is avoided when rolling up for shipping and thus maintain the flatness or flatness.
  • the slots have a length of 60% to 90%, preferably about 80%, the width of the strip steel carrier and / or a width of 30% - 50%, preferably about 40% of the width of the strip steel carrier.
  • the starting material preferably has a length of 2200 mm to 5250 mm and / or a width of 50 mm - 300 mm, more preferably a width of 180 mm, and / or a thickness of 2.5 mm to 3.5 mm. This corresponds approximately to the desired dimensions for stone saws.
  • the slots in the steel beam may be formed by any suitable method, such as punching.
  • the plurality of slots in the strip steel carrier have been produced by laser or water jet cutting.
  • the slots can have any suitable shape and are introduced almost distortion-free in the band steel carrier. It is conceivable in the same operation with the laser to produce devices for clamping, for example, to introduce suitable holes at the ends of the strip of the starting material.
  • the present invention relates to a stone saw for sawing stones, in particular bright stone types, comprising the above-described starting material as a carrier tape and a plurality of cutting segments attached to the carrier tape.
  • the cutting segments may be of a type known in the art and are preferably soldered or more preferably welded to the carrier tape.
  • an austenitic steel strip is easier to weld than a martensitic one, since an austenitic steel strip does not harden in the respective heat-affected zones. Therefore, an austenitic strip steel offers advantages in the production of stone saws, since the cutting segments can be welded automatically and need not be laboriously soldered by hand. Furthermore has This has the advantage that such a welding process, in contrast to a soldering process without additional material and thus easier to automate.
  • the present invention relates to a method for producing the illustrated precursor of a stone cedar saw, comprising the steps of providing a strip steel carrier made of an austenitic steel and inserting slots in a strip center strip of the strip steel carrier.
  • the slots are preferably introduced using a laser or a water jet cutting machine, whereby the starting material does not distort thermally or mechanically.
  • a laser or a water jet cutting machine whereby the starting material does not distort thermally or mechanically.
  • other methods are also conceivable.
  • the method preferably further comprises the step of cutting the strip steel beam to a length substantially required for a stone crepe saw, wherein the step of cutting is preferably performed prior to the step of inserting the slots.
  • the strip steel carrier is preferably leveled prior to insertion of the slots.
  • Fig. 1 shows a portion of an embodiment of a stone coffin saw 2 according to the invention.
  • the stone cedar saw 2 consists of a strip-shaped starting material 1 with a strip steel carrier 10 as a carrier strip and a plurality of cutting segments 30 secured to the carrier strip.
  • FIG. 1 shows only part of a stone saw 2, which in reality has a length of approx. 2200 mm - 5250 mm and preferably 4000 mm.
  • a preferred starting material 1 for such a stone coffin saw 2 therefore also has a length of about 4000 mm, with a width of 180 mm and a thickness of 3.5 mm.
  • the cutting segments 30 are designed for cutting stones and are preferably made of diamond composite segments.
  • diamond composite segments are made by mixing a powdered matrix material with diamond and then cold pressing and sintering the mixture. The composite segments are then attached to the lower edge of the starting material 1 by brazing.
  • a suitable hard solder with high strength or toughness is used. It is possible to use solders which have a higher melting point and therefore generally a higher toughness than conventional martensitic strip materials.
  • austenitic strip steel does not embrittle the heat-affected zone as starting material 1 and therefore does not cause tooth segments 30 to break during operation of stone-saw blade 2.
  • the cutting segments 30 can also be fixed to the primary material 1 by welding. This has the advantage that such a welding process, in contrast to a soldering process, requires no additional material, and is easier to automate.
  • the primary material 1, which forms the carrier band of the stone coffin saw 2 is essentially made of an austenitic steel.
  • Austenite itself has only a low hardness.
  • an austenitic steel may be solidified by cold working.
  • the big advantage of austenitic steels lies in their rust resistance. They are resistant to water, water vapor, humidity and weak organic and inorganic acids.
  • FIG. 2 shows a starting material 1 for a stone coffin saw 2.
  • a plurality of slots 20 are introduced in dashed lines indicated center strip 12 of the strip steel carrier 10. Through these slots 20 transmits the central strip of the beam carrier 10 under load no tensile forces. These are taken up by an edge strip 14 and a segment zone 16, so that a bleeding of the later stone saw 2 is advantageously prevented.
  • the primary material 1 of the stone coffin saw 2 of Figure 2 is conceptually divided into individual sections 18, wherein in Figure 3, a section 18 is shown in detail.
  • FIG. 3 shows a section of the primary material 1 of a stone coffin saw 2 for illustrating the shape, position and the native dimensions of the slots 20.
  • the slots 20 may take any suitable shape to weaken the strip center strip 12 of the strip steel carrier 10.
  • the slots 20 have an elliptical shape and are inclined at an angle ⁇ of 30 ° to the longitudinal axis L of the strip steel carrier 10,
  • the slots are arranged asymmetrically in the strip steel carrier 10, slightly offset upwardly, so that the segment zone 16 is slightly wider than the opposite edge strip 14.
  • the midpoint M of the slots 20 is 5% to 10% and more preferably about 7% of the width B of the strip steel carrier 10 offset from the longitudinal axis L of the strip steel carrier offset upwards.
  • the slots 20 are inclined to the longitudinal axis L of the strip steel carrier 10, wherein an angle of 25 ° to 50 °, preferably of about 30 ° has proved to be advantageous to give the strip sufficient bending strength.
  • the slots 20 preferably have a length 1 of 60% to 90%, more preferably about 80% of the width B of the strip steel carrier 10. In this case, they have a width b of 30% to 50%, preferably about 40% of the width B of Strip steel carrier 10 on.
  • the slots 20 are preferably introduced into the strip steel carrier 10 by laser or water jet cutting. These two methods have the advantage that any geometry for the slots 20 can be created. In addition, the strip steel carrier 10 does not distort during these machining operations.
  • the strip steel beams 10 preferably have a width B of 50 mm to 300 mm and more preferably a width of 180 mm, the thicknesses varying from 2.5 mm to 3.5 mm. Preferred thicknesses are 2.5 mm, 2.8 mm, 3.0 mm and 3.5 mm.
  • the steel strip carrier 10 is initially deflected to substantially the length required for a stone cedar saw 2.
  • the required length of Stone Cutter Saw 2 depends on the machine used. Usual lengths are in the range between 2200 mm and 5250 mm, preferably at just over 4000 mm. Thereafter, the strip steel is leveled, d. H. directed between straightening rollers, so that the later stone saw 2 has the necessary flatness and straightness.
  • the slots 20 are introduced with a laser or water jet cutting machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP05028371A 2005-12-23 2005-12-23 Scie à cadre pour la coupe de la pièrre et ébauche pour sa fabrication Withdrawn EP1800785A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05028371A EP1800785A1 (fr) 2005-12-23 2005-12-23 Scie à cadre pour la coupe de la pièrre et ébauche pour sa fabrication
PCT/EP2006/012538 WO2007076997A1 (fr) 2005-12-23 2006-12-27 Grille pour pierres et materiau precurseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05028371A EP1800785A1 (fr) 2005-12-23 2005-12-23 Scie à cadre pour la coupe de la pièrre et ébauche pour sa fabrication

Publications (1)

Publication Number Publication Date
EP1800785A1 true EP1800785A1 (fr) 2007-06-27

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EP05028371A Withdrawn EP1800785A1 (fr) 2005-12-23 2005-12-23 Scie à cadre pour la coupe de la pièrre et ébauche pour sa fabrication

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EP (1) EP1800785A1 (fr)
WO (1) WO2007076997A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013026593A1 (fr) * 2011-08-23 2013-02-28 Robert Bosch Gmbh Lame de scie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220402053A1 (en) * 2021-06-18 2022-12-22 Apex Brands, Inc. Hacksaw blade with tension focusing slots

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442153A (en) * 1946-04-23 1948-05-25 Norton Co Band saw with diamond abrasive teeth
CH301061A (fr) * 1952-11-17 1954-08-31 C D Societe A Responsabilite L Lame de scie à ruban.
CH312297A (de) * 1951-09-18 1955-12-31 Deutsche Edelstahlwerke Ag Gegenstand mit Hartmetallbelag.
DE1211672B (de) * 1958-03-07 1966-03-03 Stahlwerk Kabel C Pouplier Jr Verfahren zur Herstellung von schneidfesten und nichtrostenden Schneidwerkzeugen, wie Bandsaegen, Bandmesser, Messerklingen, aus einem aushaertbaren austenitischen nicht-rostenden Chrom-Nickel-Stahl
US3760789A (en) * 1968-10-28 1973-09-25 Norton Co Saw blade
JPH02284818A (ja) * 1989-04-25 1990-11-22 Sanwa Daiyamondo Kogyo Kk 硬質物切削用帯のこ
JPH06212365A (ja) * 1993-01-20 1994-08-02 Daido Steel Co Ltd 帯鋸用鋼材およびその製造方法
EP0879683A2 (fr) 1997-05-23 1998-11-25 Stalber S.r.l. Outil à couper de la pierre à faible émission sonore et machine utilisant celui-ci
WO2000046003A1 (fr) * 1999-02-01 2000-08-10 Mps Systems Gmbh Lame de scie avec zones de faiblesse pour scies alternatives

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442153A (en) * 1946-04-23 1948-05-25 Norton Co Band saw with diamond abrasive teeth
CH312297A (de) * 1951-09-18 1955-12-31 Deutsche Edelstahlwerke Ag Gegenstand mit Hartmetallbelag.
CH301061A (fr) * 1952-11-17 1954-08-31 C D Societe A Responsabilite L Lame de scie à ruban.
DE1211672B (de) * 1958-03-07 1966-03-03 Stahlwerk Kabel C Pouplier Jr Verfahren zur Herstellung von schneidfesten und nichtrostenden Schneidwerkzeugen, wie Bandsaegen, Bandmesser, Messerklingen, aus einem aushaertbaren austenitischen nicht-rostenden Chrom-Nickel-Stahl
US3760789A (en) * 1968-10-28 1973-09-25 Norton Co Saw blade
JPH02284818A (ja) * 1989-04-25 1990-11-22 Sanwa Daiyamondo Kogyo Kk 硬質物切削用帯のこ
JPH06212365A (ja) * 1993-01-20 1994-08-02 Daido Steel Co Ltd 帯鋸用鋼材およびその製造方法
EP0879683A2 (fr) 1997-05-23 1998-11-25 Stalber S.r.l. Outil à couper de la pierre à faible émission sonore et machine utilisant celui-ci
WO2000046003A1 (fr) * 1999-02-01 2000-08-10 Mps Systems Gmbh Lame de scie avec zones de faiblesse pour scies alternatives

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
LANKFORD W.T., SAMWAYS N.L., CRAVEN R.F. & MCGANNON H.E.: "The Making, shaping and Treating of Steel", 1993, USS - UNITED STATES STEEL, US, PITTSBURGH, AISE., 1985 *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 049 (M - 1078) 6 February 1991 (1991-02-06) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 578 (C - 1269) 7 November 1994 (1994-11-07) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013026593A1 (fr) * 2011-08-23 2013-02-28 Robert Bosch Gmbh Lame de scie

Also Published As

Publication number Publication date
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