WO2023016690A1 - Sägedraht und verfahren zu seiner herstellung - Google Patents
Sägedraht und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- WO2023016690A1 WO2023016690A1 PCT/EP2022/067240 EP2022067240W WO2023016690A1 WO 2023016690 A1 WO2023016690 A1 WO 2023016690A1 EP 2022067240 W EP2022067240 W EP 2022067240W WO 2023016690 A1 WO2023016690 A1 WO 2023016690A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire
- diameter
- saw
- stress
- crimping
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000002788 crimping Methods 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000005489 elastic deformation Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 7
- 238000011161 development Methods 0.000 description 15
- 230000018109 developmental process Effects 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 14
- 239000002002 slurry Substances 0.000 description 9
- 230000001419 dependent effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000008385 outer phase Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/04—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by tools other than rotary type, e.g. reciprocating tools
- B28D5/045—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by tools other than rotary type, e.g. reciprocating tools by cutting with wires or closed-loop blades
Definitions
- the invention relates to a saw wire and a method for its production.
- the material of the bar to be cut is not cut by the metal wire itself, but by abrasive components in a slurry that is transported by the wire into the cutting gap. It is therefore also referred to as wire cutting lapping, in which case wire is moved in its longitudinal direction from an unwinding to a take-up spool, with versions with wire movement in only one direction and wire movement with constant direction reversal of the direction of movement being available.
- the wire must therefore be able to bring abrasive components into the cutting gap and ensure there that the abrasive components are able to have an abrasive effect on the material to be cut.
- the slurry here is a mixture, e.g. of relatively high-viscosity glycerine and silicon carbide particles.
- the hard, small silicon carbide grains break out fine particles from the basic matrix of the material to be processed. Of course, other oils or liquid carrier media and other hard materials are also possible.
- the sawing wire In order to improve the ability of the wire to be transported with respect to the slurry, the sawing wires are provided with a structure, the structure being applied by so-called crimping.
- the crimping is an ordered bending process in which a structure is stamped into the wire, for example with two gears offset by 90°, which plastically deflect or bend the wire mechanically from a central middle position.
- the structure is created by bending the wire around a rounded point, for example a suitably shaped tooth of a gear wheel.
- such a wire is also subject to wear during the cutting process, since the abrasive, entrained particles not only act on the material to be cut, but can also have an abrasive effect on the wire or the material to be cut.
- the wire wears out on the outside of the crimp, and excessive wear can result in the crimp being lost due to the wire stretching and then not being able to carry enough sludge with it.
- WO2018/149631 A1 discloses a wire saw, wire guide rollers and a method for simultaneously separating a large number of slices from a rod.
- structured wires made of smooth, round steel wires are of particular importance for the above-mentioned methods, which have cross sections shifted periodically along their entire length without changing the shape and size of their cross-sectional area and equal amounts perpendicular to the longitudinal direction of the wire.
- these shifts are often referred to as crimps, where the amount of shift is called the amplitude of the crimps and the longitudinal length between shifts is called the wavelength.
- the envelope is defined as the smallest diameter right circular cylinder that completely contains the entire structured wire.
- the base of this right circular cylinder is defined as the effective cross section, the diameter of the base of the cylinder as the effective diameter of the structured wire and the longitudinal axis of the envelope of the cylinder as the longitudinal axis of the structured wire.
- the diameter of the core wire should be from 130 ⁇ m to 175 ⁇ m, with the diameter of the envelope of the structured wire being 1.02 to 1.25 times the diameter of the core wire.
- a structured saw wire is known from WO2015/119344 A1, which is intended to retain its crimped properties even under tension. Also in this document the need to maintain the structure of the wire under sawing conditions in order to carry the cutting material is addressed.
- This saw wire should have a continuous zigzag crimp, with the bending radius of the actual crimp corresponding to 5-20 times the diameter of the wire itself. When sawing, this wire is subjected to longitudinal tension tending to open the bend of the crimp. This reduces the crimp amplitude and stretches the wire.
- a bending radius that is only 5 times the diameter of the wire or less, overbending can occur, which can lead to breakage of the wire during manufacture.
- a bending radius larger than 20 times the diameter of the wire makes the cutting wire stretch very easily when cutting tension is applied, so that the degree of wear of the wire is greatly increased and the cutting efficiency is lowered.
- the crimping is not only two-dimensional, but three-dimensional in that the crimping rotates about the longitudinal axis, so that the crimping lies alternately on the XZ plane and the YZ plane, whereby a helix is produced. This increases the cutting capacity through improved entrainment of the slurry.
- the object of the invention is to create a method for producing a sawing wire which produces a sawing wire which has a geometric dimensional stability which is improved over the prior art and is therefore less dependent on wear.
- a further object is to create a saw wire that has a geometric form stability that has improved resistance to wear such that there is independence from changes in shape and thus the ability to carry abrasives is maintained.
- a saw wire is structured.
- the structuring represents a solution to the Apollonian problem, i.e. the wire tries to find a position between three gear tips used for deformation (two tips opposite, one tip coining).
- the wire will form a plastic joint at the crimping point, with the toothed wheel tip having a suitable radius.
- a suitable radius is, for example, of the order of 1-3 times the diameter of the wire.
- the practical elongation of the outer fiber can be between 10% and 30%, in particular around 17% to 23%.
- a maximum of 20%, in particular a maximum of 10%, of the entire wire cross section is in the area of elastic deformation, while the remaining cross-sectional area of the wire is plastically deformed.
- the high plastic deformation reduces the overall tensile strength of the wire by only 2 - 6%, corresponding to the load rating of plastic hinges.
- the range of possible wire shapes can be increased when a tensile force is applied to the wire during crimping.
- this tensile force is dimensioned such that it is at least 8%, in particular at least 12% and at most 35%, in particular at most 24% of the product of tensile strength Rm and wire cross section A.
- This tensile stress leads to a further increase in the plastic deformation range, so that the influence of external wear conditions on the wire geometry can be further reduced and far fewer restrictions are placed on the possible shapes of the wire geometry. Since the tensile stresses resulting from the tensile force during crimping can no longer be present after crimping due to the system, only compressive stresses appear on the outer fibers of the finished wire.
- the influencing variables according to the invention are the geometry of the gear head, in particular the radius of the teeth of the gears, the stretching force during structuring and the yield strength ratio Re/Rm.
- the invention relates in particular to a method for producing a structured saw wire, wherein a metal wire with an at least two-dimensional structure is formed in such a way that the wire is crimped along a longitudinal axis of the wire in such a way that the wire is plastically deformed with bulges, with a Tensile stress is applied to the extent of 10 - 20% of the tensile strength of the wire.
- a development provides that the wire is crimped in several planes that are angled relative to one another in order to produce a three-dimensional structure.
- wire forms a plastic joint during crimping, with the bending radius being in the order of 1-2 times the diameter of the wire, so that the practical elongation is around 17% to 23%, in particular around 20%
- a further development provides that the yield point starts at 1.5 - 1.7%, with a maximum of 5 - 20% of the entire wire cross-section being in the area of elastic deformation, while the remaining 80 - 95% of the wire are plastically deformed, so that the plastic deformation reduces the overall tensile strength of the wire by only 2 - 6%, corresponding to the load rating of plastic hinges.
- a further development provides that at the position of the crimping on the outside of the crimped wire, a compressive stress is set that reaches 20 - 40 ⁇ m below the surface before the stress there becomes internal tensile stress.
- a development provides that the wire is bent around a rounded tip, in particular by means of a suitably shaped tooth of a gear wheel or regularly striking shaping pins.
- a further development provides that the distance of the deformation (impacting on the wire from two sides) is about 10-15x the diameter of the wire, the wavelength is about 20-30x the diameter.
- a development provides that the structure is applied independently from directions offset by 80° to 90°, care being taken that the resulting wavelengths have the largest possible least common multiple.
- the amplitude is set in such a way that the apparent diameter of the wire (diameter of the enveloping circle in the longitudinal direction) with working tension in the wire field of a wire saw is around 8 to 12 pm and in particular 10 pm and/or 8-24% without applied tension. , In particular 10 to 20% larger than the actual wire diameter.
- a development provides that the yield point ratio Re to Rm of the wire material is set to 85 to 95% and in particular 90%.
- a further aspect of the invention relates to a sawing wire, in particular produced using a method as described above, the wire being crimped in one or more planes which are at an angle to one another.
- a further development provides that the bending radius at the point of crimping is 1-2 times the diameter of the wire and the distance of the deformation from two sides hitting the wire is 5 to 15 times and in particular 10 times the diameter of the wire, and the wavelength is 10 to 30 and in particular 20 times the diameter of the wire.
- a further development provides that at the position of the crimping on the outside of the crimped wire there is a compressive stress which extends to 20 - 40 ⁇ m below the surface of the wire before the stress there becomes internal tensile stress.
- the tensile strength of the drawn wire Rm is between 3000 and 4200, in particular 3200 and 4000, more preferably between 3400 and 3800 MPa and the yield point of the drawn wire is between 2500 and 4000, in particular 2900 and 3800 and preferably 3000 and 3450 is MPa.
- the wire has a diameter of 0.12 to 0.17 mm and has a three-dimensional crimp structure, the bending radius being 0.24 to 0.34 mm, the amplitude being 0.14 to 0.2 mm and the wavelength is between 2 and 4 mm.
- a wire with a diameter of 0.15 mm is provided with a three-dimensional crimp structure, the bending radius being twice the diameter, namely 0.3 mm.
- the amplitude that develops from this is 0.17 mm, while the wavelength is 3.1 mm.
- the necessary elongation on the outer fiber is 20%, with the material-related yield point being 1.7%. Accordingly, the plastic elongation percentage is 18.3%.
- the resulting distance from the center line to the yield point is 5.61 pm, while the distance from the edge to the zero stress line is 35.36 pm.
- the remaining stretch in the outer fiber after the bending process has been relieved is minus 1.6% (compression).
- the yield strength ratio Re to Rm is 90%, and the tensile strength of the drawn wire was Rm 3600 MPa.
- the yield point of the drawn wire is 3240 MPa.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22737835.3A EP4384338A1 (de) | 2021-08-13 | 2022-06-23 | Sägedraht und verfahren zu seiner herstellung |
KR1020247008361A KR20240042105A (ko) | 2021-08-13 | 2022-06-23 | 와이어 톱과 그 제조 방법 |
CN202280055278.1A CN117794670A (zh) | 2021-08-13 | 2022-06-23 | 锯线以及用于制造锯线的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021121134.4 | 2021-08-13 | ||
DE102021121134.4A DE102021121134A1 (de) | 2021-08-13 | 2021-08-13 | Sägedraht und Verfahren zu seiner Herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023016690A1 true WO2023016690A1 (de) | 2023-02-16 |
Family
ID=82403600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/067240 WO2023016690A1 (de) | 2021-08-13 | 2022-06-23 | Sägedraht und verfahren zu seiner herstellung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4384338A1 (de) |
KR (1) | KR20240042105A (de) |
CN (1) | CN117794670A (de) |
DE (1) | DE102021121134A1 (de) |
TW (1) | TWI836543B (de) |
WO (1) | WO2023016690A1 (de) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5261974A (en) * | 1991-07-08 | 1993-11-16 | Tokusen Kogyo Company Limited | High-strength extra fine metal wire |
EP1827745A1 (de) * | 2004-12-23 | 2007-09-05 | Arcelor Bettembourg S.A. | Monofilament-metallsägedraht |
KR20120120721A (ko) * | 2011-04-25 | 2012-11-02 | 니폰 세이센 가부시키가이샤 | 소우 와이어 및 그 제조 방법 |
WO2015119344A1 (en) | 2014-02-04 | 2015-08-13 | Hongduk Industrial Co., Ltd. | Structured saw wire maintaining crimp property under slicing tension |
EP2906382A1 (de) * | 2012-09-07 | 2015-08-19 | NV Bekaert SA | Geformter sägedraht mit restspannungen unter der oberfläche |
CN108284529A (zh) * | 2017-01-09 | 2018-07-17 | 江阴贝卡尔特合金材料有限公司 | 具有有着弹性和塑性旋转的锯丝的卷轴 |
WO2018149631A1 (de) | 2017-02-14 | 2018-08-23 | Siltronic Ag | Drahtsäge, drahtführungsrolle und verfahren zum gleichzeitigen abtrennen einer vielzahl von scheiben von einem stab |
EP3565693A1 (de) * | 2017-01-09 | 2019-11-13 | Bekaert Binjiang Steel Cord Co., Ltd. | Spule mit sägedraht mit elastischen und plastischen drehungen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19839091A1 (de) * | 1998-08-27 | 2000-03-09 | Kempten Elektroschmelz Gmbh | Sägedraht |
JP2001259991A (ja) | 2000-03-15 | 2001-09-25 | Sumitomo Electric Ind Ltd | ワイヤソー用ワイヤ |
JP2012139743A (ja) | 2010-12-28 | 2012-07-26 | Tochigi Sumitomo Denko Kk | ソーワイヤー |
CN104070610A (zh) * | 2013-03-26 | 2014-10-01 | 蒙特集团(香港)有限公司 | 带有磨料的高效切割线锯 |
CN103343871B (zh) | 2013-07-02 | 2016-12-28 | 江苏宝钢精密钢丝有限公司 | 一种低弹性结构线及其制造方法 |
CN203471061U (zh) * | 2013-09-09 | 2014-03-12 | 凡登(常州)新型金属材料技术有限公司 | 一种异构型金属丝及其制作装置 |
NO20180147A1 (en) * | 2018-01-30 | 2019-07-31 | 1Diamond As | A wall structure cutting wire saw |
-
2021
- 2021-08-13 DE DE102021121134.4A patent/DE102021121134A1/de active Pending
-
2022
- 2022-06-23 KR KR1020247008361A patent/KR20240042105A/ko unknown
- 2022-06-23 EP EP22737835.3A patent/EP4384338A1/de active Pending
- 2022-06-23 WO PCT/EP2022/067240 patent/WO2023016690A1/de active Application Filing
- 2022-06-23 CN CN202280055278.1A patent/CN117794670A/zh active Pending
- 2022-08-05 TW TW111129511A patent/TWI836543B/zh active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5261974A (en) * | 1991-07-08 | 1993-11-16 | Tokusen Kogyo Company Limited | High-strength extra fine metal wire |
EP1827745A1 (de) * | 2004-12-23 | 2007-09-05 | Arcelor Bettembourg S.A. | Monofilament-metallsägedraht |
KR20120120721A (ko) * | 2011-04-25 | 2012-11-02 | 니폰 세이센 가부시키가이샤 | 소우 와이어 및 그 제조 방법 |
EP2906382A1 (de) * | 2012-09-07 | 2015-08-19 | NV Bekaert SA | Geformter sägedraht mit restspannungen unter der oberfläche |
WO2015119344A1 (en) | 2014-02-04 | 2015-08-13 | Hongduk Industrial Co., Ltd. | Structured saw wire maintaining crimp property under slicing tension |
CN108284529A (zh) * | 2017-01-09 | 2018-07-17 | 江阴贝卡尔特合金材料有限公司 | 具有有着弹性和塑性旋转的锯丝的卷轴 |
EP3565693A1 (de) * | 2017-01-09 | 2019-11-13 | Bekaert Binjiang Steel Cord Co., Ltd. | Spule mit sägedraht mit elastischen und plastischen drehungen |
WO2018149631A1 (de) | 2017-02-14 | 2018-08-23 | Siltronic Ag | Drahtsäge, drahtführungsrolle und verfahren zum gleichzeitigen abtrennen einer vielzahl von scheiben von einem stab |
Also Published As
Publication number | Publication date |
---|---|
KR20240042105A (ko) | 2024-04-01 |
DE102021121134A1 (de) | 2023-02-16 |
EP4384338A1 (de) | 2024-06-19 |
TW202319150A (zh) | 2023-05-16 |
CN117794670A (zh) | 2024-03-29 |
TWI836543B (zh) | 2024-03-21 |
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