WO2012055711A1 - Fil abrasif fixe de sciage et procédé de fabrication de celui-ci - Google Patents

Fil abrasif fixe de sciage et procédé de fabrication de celui-ci Download PDF

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Publication number
WO2012055711A1
WO2012055711A1 PCT/EP2011/067984 EP2011067984W WO2012055711A1 WO 2012055711 A1 WO2012055711 A1 WO 2012055711A1 EP 2011067984 W EP2011067984 W EP 2011067984W WO 2012055711 A1 WO2012055711 A1 WO 2012055711A1
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WO
WIPO (PCT)
Prior art keywords
wire
layer
metal
metal layer
fixed abrasive
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Application number
PCT/EP2011/067984
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English (en)
Inventor
Henk Troost
Original Assignee
Nv Bekaert Sa
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 Nv Bekaert Sa filed Critical Nv Bekaert Sa
Publication of WO2012055711A1 publication Critical patent/WO2012055711A1/fr

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Classifications

    • 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
    • B23D61/18—Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
    • B23D61/185—Saw wires; Saw cables; Twisted saw strips

Definitions

  • the present invention relates to the field of fixed abrasive sawing wires for cutting hard and brittle materials, more specifically it relates to a
  • monofilament sawing wire where abrasive particles are indented and held in an outer layer of a monofilament.
  • the abrasive particles must also be fixed well to the wire as sawing is normally performed in a thru and fro movement, a movement that tends to wiggle to particles out of their positions. Hence, a considerable part of the sawing wire cross sectional area is devoted to a layer that holds the abrasive particles, which makes the strength requirement even more difficult.
  • the wire must be deliverable in sufficiently long lengths as in a multi-loop wire saw quite some length of wire is already needed to thread the web: depending on the type of machine and the number of loops this varies from 500 to 1500 meter.
  • a multi-loop wire saw a single wire is threaded over grooved capstans in loops, side by side. The corresponding surface of parallel arranged wire loops is called the web.
  • the more generally used name is a multi-wire saw which is actually a misnomer as there is only one wire in the web. Wires must therefore be supplied in lengths of at least 10 kilometre in order to be useful on the machine.
  • a first route was taken by the technologists that were familiar with the making of metallic based fixed abrasive tools such saw blades wherein abrasive particles - usually diamonds - are embedded in a nickel coating by electroplating or electroless deposition out of a nickel bath comprising diamond particles.
  • An example is described in EP 0 982 094 wherein a metallic wire, the embodiment of a stainless steel wire is given, is coated with nickel with diamonds. However, the coating speed attained is slow.
  • EP 0 081 697 describes a method and an apparatus to incrust a wire with diamond particles.
  • This route offers advantages in terms of throughput and product quality and allows the production of reasonably long lengths.
  • a fixed abrasive sawing wire is claimed as a product.
  • the fixed abrasive sawing wire comprises a steel core wire and an indentation layer covering said steel core wire.
  • Abrasive particles are indented in said indentation layer and a binding layer covers the indentation layer and the abrasive particles.
  • the indention layer - additional to what was known from the prior-art - comprises a first metal layer covering the steel core and a second metal layer covering said first metal layer, wherein the first metal is softer than the second metal.
  • the indentation layer comprises two different layers: a soft under layer and a hard top layer.
  • the core wire of the fixed abrasive sawing wire is made of steel.
  • the core is made of a plain carbon steel although other kinds of steel such as stainless steels are not excluded. Steels are more preferred over other high tensile wires such as tungsten, titanium or other high strength alloys because it can be made in high tensile grades. This can be achieved by extensive cold forming of the wire through circular dies.
  • abrasive sawing wire is as follows
  • Manganese adds - like carbon - to the strain hardening of the wire and also acts as a deoxidiser in the manufacturing of the steel.
  • - A silicon content between 0.15 to 0.30 wt%. Silicon is used to deoxidise the steel during manufacturing. Like carbon it helps to increase the strain hardening of the steel.
  • phosphorous (below 0.30%) should be kept to a minimum.
  • chromium 0.005 to 0.30%wt
  • vanadium 0.005 to 0.30%wt
  • nickel 0.05-0.30%wt
  • molybdenum 0.05-0.25%wt
  • boron traces may improve the formability of the wire.
  • Such alloying enables carbon contents of 0.90 to 1 .20%wt, resulting in tensile strengths that can be higher as 4000 MPa in drawn wires.
  • the diameter of the intermediate wire i.e. the wire prior to drawing to the final size, must be chosen large enough in order to obtain such a high tensile strength.
  • the metallographic structure obtained is a fine, far-drawn pearlitic structure.
  • Preferred stainless steels contain a minimum of 12%Cr and a substantial amount of nickel. More preferred stainless steel compositions are austenitic stainless steels as these can easily be drawn to fine diameters. The more preferred compositions are those known in the art as AISI 302 (particularly the 'Heading Quality' HQ), AISI 301 , AISI 304 and AISI 314. 'AISI' is the abbreviation of 'American Iron and Steel Institute'.
  • the indentation layer As the main purpose of the 'indentation layer' is indeed to indent abrasive particles in it, it must be suitable for indentation of the particles. It follows that the whole of the indentation layer must deform under the indentation action of the individual abrasive particles.
  • the invention particularly resides in the fact that the indentation layer is made of two layers: a first metal layer that is in contact with the steel core and a second metal layer covering said first metal layer. It is imperative to the invention that the second layer is harder than the first layer. Whether the second metal layer is harder than the first metal layer, can easily be assessed by means of a standard micro-Vickers hardness.
  • the first metal layer acts as a cushion that plastically deforms under the action of the abrasive particle.
  • the second metal layer acts as a skin that prevents the abrasive particle of sinking too deep into the soft first metal layer.
  • the first layer of the indentation layer must be sufficiently thick to allow plastic deformation while the second layer of the indention layer should be sufficiently thin in order to allow deformation of the first layer.
  • the indentation layer as a whole should not be too thick as otherwise the overall strength of the wire diminishes because a lot of cross sectional area is taken up by the indentation layer which is not as strong as the steel core. Furthermore the total thickness of the indentation layer stands in relation with the abrasive particle size. If the particles are much larger than the indentation layer, they will not be properly held by the indentation layer, while when they are too small with respect to the indentation layer, too much overall strength of the wire is lost.
  • the thickness of the indentation layer must be more than 3.5% of the diameter of the steel core wire inclusive the indentation layer in order to be able to accommodate the abrasive particles.
  • the thickness of the indentation layer is 7% of the diameter of the steel core wire inclusive the indentation layer.
  • the cross sectional area taken up by the indentation layer is already 36 % of the total cross sectional areas which will lead to an unacceptable loss in overall strength of the wire.
  • the indentation layer about 0.5 micrometer up to maximum 3 micron is taken up by the second metal layer. Most preferred is between 1 to 2 micrometer. For thin wires (120 pm) the thickness is preferred to be between 0.5 to 1 pm. The thickness of the second metal layer does not scale with the size of the wire as it only serves as a skin to the soft first metal layer.
  • Suitable metals or alloys for the first metal layer are softer metals and
  • alloys like copper, zinc, brass, bronze, tin, lead, aluminium More preferred are zinc and copper, while copper is the most preferred.
  • the interface between the steel core and the first metal layer can exhibit a certain degree of roughness and can even be interlocking.
  • the advantage of such an interface is that the indentation layer better adheres to the steel core wire.
  • 'interlocking' is meant that certain protrusions of the first metal layer hook-in into corresponding recesses of the steel core wire.
  • the degree of roughness - for the purpose of this application - is expressed in terms of the arithmetical mean deviation roughness 'R a ' as determined on a metallographical cross section.
  • the average 'R a ' must be larger than 0.50 micrometer, even more preferred is if it is above 0.70 micrometer.
  • the average 'R a ' is determined by taking separate pictures of different segments of the perimeter of the wire and determining the roughness 'R a ' for every segment and then calculating the average. At least half of the perimeter of the cross section must be measured in different segments in order to obtain a good coverage over the whole perimeter. A magnification of 500 to 1000 times should be used.
  • Suitable metals or alloys for the second metal layer are copper, brass, nickel, nickel-phosphorous, iron, zinc-aluminium, copper-nickel, copper- beryllium, chromium, cobalt, molybdenum or tungsten. Alloys - like brass - are more preferred as an alloy is generally always harder than its constituting pure metals. Also preferred are nickel and iron, but most preferred is nickel. In any case the requirement remains that the metal or alloy of the first metal layer must be softer than the metal or metal alloy of the second metal layer.
  • the abrasive particles can be superabrasive particles such as diamond (natural or artificial, the latter being more preferred because of their lower cost and their grain friability), cubic boron nitride or mixtures thereof.
  • particles such as tungsten carbide (WC), silicon carbide (SiC), aluminium oxide (AI2O3) or silicon nitride (S13N4) can be used: although they are softer, they are considerably cheaper than diamond. But artificial diamond remains most preferred.
  • the size of the abrasive particles must be chosen in function of the
  • the size and shape of the particles themselves is a technical field in its own right. As the particles have not - and should not have - a spherical shape, for the purpose of this application reference will be made to the 'size' of the particles rather than their 'diameter' (as a diameter implies a spherical shape).
  • the size of a particle is a linear measure (expressed in
  • micrometer determined by any measuring method known in the field and is always somewhere in between the length of the line connecting the two points on the particle surface farthest away from each other (through the bulk of the particle) and the length of the line connecting the two points on the particle surface closest to one another (through the bulk of the particle).
  • microgrits The size of particles envisaged for the fixed abrasive sawing wire fall into the category of 'microgrits'.
  • the size of microgrits can not longer be determined by standard sieving techniques which are customary for macrogrits. In stead they must be determined by other techniques such as laser diffraction, direct microscopy, electrical resistance or
  • the particle size as determined by the laser diffraction method is meant.
  • the output of such a procedure is a cumulative or differential particle size distribution with a median size d50 (i.e. half of the particles are smaller than this size and half of the particles are larger than this size).
  • Superabrasives are normally identified in size ranges by this standard rather than by sieve number. E.g. particle distributions in the 20-30 micron class have 90% of the particles between 20 micrometer (i.e. 'd 5 ') and 30 micrometer (i.e. 95 ') and less than in 1 in 1000 over 40 microns while the median size d 50 must be between 25.0 +/- 2.5 micron.
  • the median size i.e. that size of particles where half of the diameters have a smaller size and the other half a larger size
  • the particles can not be too small as then the material removal rate (i.e. the amount of material abraded away per time unit) becomes too low.
  • the target coverage ratio for the particles is function of the material one intends to cut, the cutting speed one wants to reach or the surface finish one wants to obtain.
  • the inventors have found that in order to have the best sawing performance for the materials envisaged the ratio of particle area over total area should be between 1 and 50%, or between 2 to 20% or even between 2 and 10%.
  • the binding layer serves to hold the abrasive particles in the indentation layer.
  • Either the binding layer can be metallic in nature. In that case one applies - usually by deposition out of an electrolytic bath - a metallic layer on top of the abrasive particles and the sheath.
  • the binder layer must be a relatively hard metal as it is subject to wear and tear during sawing.
  • a metal or alloy out of the group comprising iron, nickel, nickel- phosphorous, chromium, cobalt, molybdenum, tungsten, copper and brass is chosen.
  • alloys can be used as binding layer metals as they tend to be harder than there constituents.
  • nickel is a preferred metal for the binding layer with or without addition of phosphorous. Phosphorous makes the nickel-phosphorous layer more ductile and wear resistant.
  • the binding layer can be an organic binding layer.
  • organic binding layer can be a thermosetting - also called
  • thermohardening - organic polymer compound Alternatively the binding layer can be a thermoplastic polymer compound.
  • thermosetting polymers - once cured - do not soften when the temperature gets higher during use they are more preferred for this kind of application.
  • Preferred thermosetting polymers are phenol formaldehyde, melamine phenol formaldehyde or acrylic based resin or amino based resins like melamine formaldehyde, urea formaldehyde, benzoguanamine formaldehyde, glycoluril formaldehyde or epoxy resin or epoxy amine.
  • polyester resin or epoxy polyester or vinyl ester or alkyd based resins are less preferred - but nevertheless still usuable -.
  • thermoplastic polymers are: acrylic, polyurethane, polyurethane acrylate, polyamide, polyimide, epoxy. Less preferred - but nevertheless still useable are vinyl ester, alkyd resins, silicon based resins,
  • the list is non-exhaustive and other suitable polymers can be identified.
  • the indentation layer as well as the particles can be treated with an organic primer in order to improve the adhesion between the polymer binding layer and the particle.
  • the inventive fixed abrasive sawing wire can be clearly discriminated from prior-art fixed abrasive sawing wires in that, on a cross section, radially below the indented abrasive particles the second metal layer that has been pushed into the softer first metal layer is present. This feature can be found back even if both the second metal layer and the binding layer are of identical material.
  • a method to produce a fixed abrasive sawing wire comprises the steps of: - Providing a steel core wire.
  • the steel of this steel core wire should have a composition according the lines stipulated in paragraphs [0018] and [0019] of this application.
  • the tensile strength of the steel core wire is chosen such that after all steps of the method have been completed, the final fixed abrasive sawing wire must have a breaking load high enough to survive the sawing process.
  • the steel core wire must in practice be at least as strong as the final fixed abrasive sawing wire. This means that for steel core wires the following minimal breaking loads must be met (Table II):
  • the steel core wire is covered with a first metal layer which results in a first intermediate wire.
  • a first metal layer which results in a first intermediate wire.
  • this is performed by means of electrolytically coating the wire with e.g. one out of copper, zinc, brass, bronze, tin, lead or aluminium.
  • the thickness of the layers is as per Table I
  • this first intermediate wire is coated with a second metal layer which results in a second intermediate wire.
  • a second metal layer which results in a second intermediate wire.
  • the wire e.g. one out of copper, brass, nickel, iron, zinc-aluminium copper-nickel, copper- beryllium, chromium, cobalt, molybdenum or tungsten.
  • the metal of the first metal layer must be softer than that of the second metal layer.
  • the thickness of the layer is between 0.5 to 3 pm and scales with the diameter of the steel core wire (smaller diameter preferably have thinner second metal layers).
  • abrasive particles of the preferred size are indented into the second intermediate wire.
  • Indentation can by way of example be performed by feeding the wire downwardly in between two sheaves wherein a groove is made that tightly fits the wire profile. The abrasive particles are fed between the groove and the wire at the necessary feed rate, while the sheaves push the particles into the indentation layer. In this way a third intermediate wire is obtained.
  • this third intermediate wire can be coated with a binding layer that either can be metallic or organic in nature.
  • a binding layer that either can be metallic or organic in nature.
  • the binding layer is metallic, it is by way of example applied by means of electrolytic deposition of the preferred binding layer metal that can be one out of copper, brass, nickel, nickel-phosphorus, iron, zinc-aluminium copper- nickel, copper-beryllium, chromium, cobalt, molybdenum or tungsten. Most preferred is nickel or nickel-phosphorous. For nickel-phosphorous the electroless deposition route is preferred.
  • the binding layer can be organic.
  • the second or third intermediate wire can be treated with an adhesion promoter adapted to increase adhesion between the organic coating and the intermediate wire surface.
  • Organic coatings can be applied by powder coating, extrusion, dipping followed by die wiping or any other appropriate technique. Depending on the type of coating it must be followed by a hardening step which is either thermal in nature or through ultraviolet or infrared radiation.
  • Appropriate coating materials are one out of the group comprising phenol formaldehyde, melamine phenol formaldehyde or acrylic based resin or amino based resins like melamine formaldehyde, urea formaldehyde, benzoguanamine
  • the process is finished by winding the wire on an appropriate carrier such as a spool.
  • the process steps can be performed separated from one another or some of the process steps can be combined. For example the steps of indentation and providing a binding layer can easily be combined.
  • the first intermediate wire is subjected to a drawing operation prior to being covered with the second metal layer.
  • the coating with the first metal layer can thus be performed on a thicker steel core wire, but must naturally be scaled relative the thickness to steel core wire one wants to obtain in the end. Of course one must take drawing losses of the first layer into account (i.e. one has to make the coating a little bit thicker than needed). Drawing loss is the coating material loss that occurs during wire drawing. Also the strain hardening of the steel must be carefully assessed such that the final steel core wire has the appropriate tensile strength.
  • the first metal layer is made of a soft metal that will be softer than steel
  • a rough, interlocking interface will form during drawing, provided that the metal of the first metal layer do not interdiffuse with the steel of the coure.
  • Such a rough interface helps to improve the adhesion between the first metal layer and the steel core.
  • the drawing operation is performed on the second intermediate wire. Again the same
  • the thickness of the layers must be scaled, drawing losses must be taken into account as well as the strain hardening of the wire. Again the interface between steel wire core and first metal layer will be rough.
  • the drawing conditions can be chosen such that the metal of the second metal layer diffuses into the metal of the first metal layer.
  • the drawing conditions must be such that locally sufficient heat is generated during drawing for the diffusion to take place.
  • the alloy layer then becomes the second metal layer.
  • a particularly preferred couple of metals is therefore to have copper as a first layer on top of which zinc is deposited.
  • the zinc helps to improve drawability while, during drawing, it alloys with the copper to form a brass second metal layer.
  • tin can be used which results in a bronze second metal layer.
  • FIGURE 1 a shows an overall cross section of the inventive wire, with in FIGURE 1 b an enlarged part where an abrasive particle was indented.
  • FIGURE 2 shows comparative sawing results obtained with the inventive sawing wire and a reference wire.
  • a high carbon, chromium doped wire rod (nominal diameter 5.5 mm) with a nominal carbon content of 0.925 wt% with a composition in line with that of paragraph [0018] was chemically descaled according to the methods known in the art.
  • the wire was dry drawn to 3.05 mm, patented and again dry drawn to an
  • This intermediate wire will become the steel core wire.
  • a copper coating of about 341 gram per kilogram of steel wire was electroplated on this intermediate diameter, yielding an overall diameter of 0.99 mm.
  • this intermediate wire was sequentially drawn through successively smaller dies, till a total diameter (steel core wire and first metal layer) of 137 micron was obtained: the steel core wire has a diameter of about 1 19 micron, while the first metal layer has a thickness of about 9 micron.
  • the copper coating is the first metal layer in the language of the product claims. Part of this first intermediate wire was set aside for making the inventive wire, another part was used to make a conventional wire.
  • the conventional wire was made by indenting diamond particles into the copper layer by mechanically indenting diamond particles into it.
  • the diamond particles had a median particle size of 10 pm.
  • the particles were indented into the copper layer by guiding the wire through a tightly fitting set of grooved sheaves where in between diamond was fed.
  • the particles were subsequently fixed by electrodepositing a binding layer of nickel onto it about 4 to 5 m thick in a reel-to-reel installation according the principles described in WO 2007/147818 of the current applicant. This is considered as the reference wire.
  • the inventive wire was first covered with a second metal layer before
  • a nickel layer - the second metal layer - was therefore deposited on the copper layer - the first metal layer - by means of electroplating, in the manner as known from WO 2007/147818.
  • the nickel layer is harder than the copper layer.
  • the copper layer showed a Vickers hardness of about 88 N/mm 2 (at a load of 0.098 N for 10 seconds). This nickel layer was about 1 to 2 m thick.
  • Nickel coatings generally have a micro hardness in excess of 850 N/mm 2 . This is the second intermediate wire in the language of the method claims.
  • abrasive particles were indented in exactly the same matter as for reference wire i.e. diamond particles with a median particle size of 10 pm. Again the particles were fixed by means of binding layer of nickel, with the difference that the nickel coating was somewhat reduced: about 4 pm thick.
  • FIGURE 1 a shows a cross section 100 of the complete wire.
  • the steel core wire 1 10 is clearly discernable, as well as the first layer of the indentation layer 1 12 i.e. the copper layer.
  • the second metal layer of the indentation layer and the binding layer are identical 1 14 they appear homogeneous when no indentations are present.
  • FIGURE 1 b it is clearly visible that radially under the abrasive particle, a thin nickel layer is present (between the lines 120 and 122). Out of the deformation of the first metal layer, it can be deduced that the second metal layer must have been present prior to indentation of the particles.
  • the cross section also clearly shows a rough interface (indicated 124 in the detail) between steel core wire 1 10 and first metal (copper) layer 1 12.
  • This rough interface is a consequence of the drawing of the copper clad wire.
  • the average roughness of the interface R a is about 1 .37 pm. It is believed that such a rough interface helps the adherence of the first layer to the steel core wire.
  • Both reference and inventive wires were tested in a single wire saw machine of type RTS-480 obtained from DVVT. A block of mono-crystalline silicon of size 25x125 mm 2 was cut through from the smaller side i.e. the sawing wire contacts the silicon over a length of 25 mm.
  • the machine was operated in a constant table speed mode of 4.5 mm/min at a wire tension of 12 N with an average wire speed of 450 m/min.
  • the saw is reciprocal and about 180 m of wire passes the block on each half cycle.
  • the bow height of the wire was monitored during sawing and is considered a measure for the loss of cutting ability. If the bow increases too fast during cutting, the wire looses its cutting ability quickly which may be due to a loss of diamonds (other reasons - such as diamond polishing or wire loading - can not be excluded per se).
  • the best wire is the wire that shows a low bow increase during sawing.
  • FIGURE 2 shows the results of these tests.
  • abscissa the time of sawing is plotted and in ordinate the resulting bow during sawing.
  • the bow stabilises and a constant working regime occurs.
  • the stabilised regime a difference is noticeable between the reference and the inventive fixed abrasive sawing wire in that the slope of the curves are different.
  • the end bow is the bow observed at the end of the cut. It is a measure for the cutting ability at the end of the cut: the higher the bow the lower the cutting ability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne un fil abrasif fixe de sciage (100) adapté pour scier des matériaux durs et cassants. Le fil de sciage est du type dans lequel des particules dures - de préférence des particules de diamant -sont poussées dans une couche d'indentation tendre qui recouvre un noyau de fil d'acier dur (110). Ensuite des particules d'indentation sont fixées davantage au moyen d'une couche de liant. Le fil de sciage (100) est particulier en ce que la couche d'indentation est réalisée à partir de deux couches métalliques : une première couche métallique (112) à proximité du noyau de fil d'acier sur laquelle une seconde couche métallique (114) est déposée. Le premier métal est plus tendre que le second métal. La seconde couche métallique (114) est mince afin de ne pas limiter la capacité d'indentation de la première couche métallique (112). Il est présumé que la seconde couche métallique (114) est comme une peau qui améliore les capacités de retenue des particules du fil abrasif fixe de sciage (100). L'invention concerne aussi un certain nombre de procédés permettant de produire un tel type de fil.
PCT/EP2011/067984 2010-10-28 2011-10-14 Fil abrasif fixe de sciage et procédé de fabrication de celui-ci WO2012055711A1 (fr)

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EP10189168.7 2010-10-28
EP10189168 2010-10-28

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WO2012055711A1 true WO2012055711A1 (fr) 2012-05-03

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JP6698682B2 (ja) * 2015-03-13 2020-05-27 べカルト ビンジャン スチール コード カンパニー．，リミテッドＢｅｋａｅｒｔ Ｂｉｎｊｉａｎｇ Ｓｔｅｅｌ Ｃｏｒｄ Ｃｏ．，Ｌｔｄ 金属合金固定層を有する固定砥粒ソーワイヤーの製造方法及びそれにより得られるワイヤー

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US2793478A (en) 1954-05-24 1957-05-28 Bjorksten Res Lab Inc Cutting tool and method of making
US3854898A (en) 1970-02-19 1974-12-17 Remington Arms Co Inc A method for producing armored rod and wire saws
EP0081697A2 (fr) 1981-11-28 1983-06-22 Heckler & Koch Maschinen- und Anlagenbau GmbH Procédé et dispositif pour appliquer des particules dures sur des objets en forme de fil circulaire ou sans arêtes longitudinales comme des scies en forme de fil
JPH0523965A (ja) * 1991-07-19 1993-02-02 Kanai Hiroyuki ワイヤソー用ワイヤおよびその製造方法
JPH09150314A (ja) * 1995-11-27 1997-06-10 Asahi Daiyamondo Kogyo Kk ワイヤーソー及びその製造方法
WO1999046077A2 (fr) 1998-03-11 1999-09-16 Norton Company Scie a fil superabrasif et son procede de fabrication
EP0982094A2 (fr) 1998-08-27 2000-03-01 Elektroschmelzwerk Kempten GmbH Fil de sciage
US6070570A (en) 1997-02-14 2000-06-06 Sumitomo Electric Industries, Ltd. Wire-saw and its manufacturing method
EP1025942A2 (fr) 1999-02-04 2000-08-09 Ricoh Company, Ltd. Fil de sciage abrasif et procédé pour sa fabrication
WO2005011914A2 (fr) 2003-07-25 2005-02-10 Chien-Min Sung Machine a scier a fil superabrasif et procedes de fabrication associes
WO2007147818A2 (fr) 2006-06-20 2007-12-27 Nv Bekaert Sa Appareil et procédé de finition galvanique d'un substrat de manière continue
EP1886753A1 (fr) * 2005-12-27 2008-02-13 Japan Fine Steel Co., Ltd. Fil a abrasifs fixes
WO2010092151A1 (fr) * 2009-02-13 2010-08-19 Nv Bekaert Sa Fil abrasif fixe de sciage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793478A (en) 1954-05-24 1957-05-28 Bjorksten Res Lab Inc Cutting tool and method of making
US3854898A (en) 1970-02-19 1974-12-17 Remington Arms Co Inc A method for producing armored rod and wire saws
EP0081697A2 (fr) 1981-11-28 1983-06-22 Heckler & Koch Maschinen- und Anlagenbau GmbH Procédé et dispositif pour appliquer des particules dures sur des objets en forme de fil circulaire ou sans arêtes longitudinales comme des scies en forme de fil
JPH0523965A (ja) * 1991-07-19 1993-02-02 Kanai Hiroyuki ワイヤソー用ワイヤおよびその製造方法
JPH09150314A (ja) * 1995-11-27 1997-06-10 Asahi Daiyamondo Kogyo Kk ワイヤーソー及びその製造方法
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WO1999046077A2 (fr) 1998-03-11 1999-09-16 Norton Company Scie a fil superabrasif et son procede de fabrication
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TW201236786A (en) 2012-09-16
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