CN100393466C - 用于切割金属的金刚石-立方氮化硼锯片及其制作方法 - Google Patents
用于切割金属的金刚石-立方氮化硼锯片及其制作方法 Download PDFInfo
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- CN100393466C CN100393466C CNB2004100229977A CN200410022997A CN100393466C CN 100393466 C CN100393466 C CN 100393466C CN B2004100229977 A CNB2004100229977 A CN B2004100229977A CN 200410022997 A CN200410022997 A CN 200410022997A CN 100393466 C CN100393466 C CN 100393466C
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 title claims abstract description 21
- 229910052582 BN Inorganic materials 0.000 title claims abstract description 14
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000010432 diamond Substances 0.000 title claims abstract description 7
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 239000003082 abrasive agent Substances 0.000 claims abstract description 32
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 27
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229910007948 ZrB2 Inorganic materials 0.000 claims abstract description 11
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims abstract description 11
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910021343 molybdenum disilicide Inorganic materials 0.000 claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 11
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000013329 compounding Methods 0.000 claims abstract description 10
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 239000010453 quartz Substances 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 6
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 4
- 239000010962 carbon steel Substances 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 18
- 229910001651 emery Inorganic materials 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 10
- 239000010431 corundum Substances 0.000 claims description 10
- 229910052593 corundum Inorganic materials 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- 239000000080 wetting agent Substances 0.000 claims description 10
- -1 quartzy Chemical compound 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 230000001186 cumulative effect Effects 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- 239000010721 machine oil Substances 0.000 claims description 2
- 239000000320 mechanical mixture Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000006263 metalation reaction Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Abstract
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CNB2004100229977A CN100393466C (zh) | 2004-03-19 | 2004-03-19 | 用于切割金属的金刚石-立方氮化硼锯片及其制作方法 |
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CNB2004100229977A CN100393466C (zh) | 2004-03-19 | 2004-03-19 | 用于切割金属的金刚石-立方氮化硼锯片及其制作方法 |
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CN1669708A CN1669708A (zh) | 2005-09-21 |
CN100393466C true CN100393466C (zh) | 2008-06-11 |
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Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100563971C (zh) * | 2006-04-14 | 2009-12-02 | 浙江工业大学 | 锯片用复合材料 |
CN101285371B (zh) * | 2008-05-30 | 2011-05-04 | 中南大学 | 一种金刚石定位排布孕镶地质钻头的制造工艺 |
CN101380784B (zh) * | 2008-10-14 | 2012-01-18 | 广东奔朗新材料股份有限公司 | 一种锯片及其制作方法 |
CN101921575B (zh) * | 2009-06-16 | 2012-11-21 | 河南富耐克超硬材料股份有限公司 | 一种立方氮化硼-氧化铝多晶复合磨料的制造方法 |
CN102652999B (zh) * | 2011-03-02 | 2014-04-09 | 深圳市常兴技术股份有限公司 | 采用预合金粉加工超硬制品的工艺 |
CN102814756B (zh) * | 2011-06-09 | 2015-01-21 | 沈阳中科超硬磨具磨削研究所 | 一种树脂cbn端面磨砂轮及应用 |
CN102672824B (zh) * | 2012-06-04 | 2015-01-21 | 安泰科技股份有限公司 | 钨铜基金刚石刀头、圆锯片及其制备方法 |
CN103770021A (zh) * | 2014-01-10 | 2014-05-07 | 当涂县南方红月磨具磨料有限公司 | 一种复合结合剂立方碳化硅砂轮 |
CN103770024A (zh) * | 2014-01-10 | 2014-05-07 | 当涂县南方红月磨具磨料有限公司 | 一种陶瓷立方氮化硼砂轮 |
CN106142360B (zh) * | 2015-04-04 | 2018-12-28 | 河北小蜜蜂工具集团有限公司 | 一种大尺寸金刚石圆锯片产品的制备方法 |
CN105149783B (zh) * | 2015-10-28 | 2017-08-04 | 无锡汉神电气股份有限公司 | 石料链锯激光焊接工艺 |
CN105479352A (zh) * | 2015-11-30 | 2016-04-13 | 苏州市宝玛数控设备有限公司 | 一种金刚石砂轮 |
CN105562825B (zh) * | 2015-12-24 | 2017-10-24 | 中南大学 | 金属结合剂复杂型面金刚石锯片及其3d打印制作工艺 |
CN105709878A (zh) * | 2016-01-07 | 2016-06-29 | 南昌理工学院 | 一种高效锤片式粉碎机 |
CN105618883B (zh) * | 2016-01-11 | 2017-12-15 | 苏州科技大学 | 一种真空钎焊单层立方氮化硼砂轮的制作方法 |
CN105772707A (zh) * | 2016-04-27 | 2016-07-20 | 西安航空制动科技有限公司 | 粉末冶金铁基摩擦材料层与钢背的粘接方法及粘接材料 |
CN107695334A (zh) * | 2017-08-23 | 2018-02-16 | 佛山市至开金刚石工具有限公司 | 一种用于切割不锈钢的锯片材料及其制备方法 |
CN108098062B (zh) * | 2017-12-26 | 2019-07-02 | 苏州卫优知识产权运营有限公司 | 一种钢轨锯切机用金刚石锯片及其生产工艺 |
CN108247037A (zh) * | 2018-01-30 | 2018-07-06 | 河南涵信金刚石工具有限公司 | 一种金刚石锯片刀头粉料、金刚石锯片及其制备方法 |
CN108838392A (zh) * | 2018-09-01 | 2018-11-20 | 芜湖德加智能科技有限公司 | 整体pcbn刀片粘结剂及其制备方法 |
CN108908143A (zh) * | 2018-09-06 | 2018-11-30 | 扬中市飞宇磨具有限公司 | 一种高效率齿轮加工磨砂轮 |
CN110253011A (zh) * | 2018-10-30 | 2019-09-20 | 湖南工业大学 | 一种适于碳素钢与合金钢加工的硬质合金及其制备方法 |
CN110340345B (zh) * | 2019-07-09 | 2021-04-09 | 广东省材料与加工研究所 | 一种纳米相增强铜基金刚石工具胎体粉及胎体制备方法 |
CN110777289B (zh) * | 2019-11-29 | 2021-04-23 | 湘潭大学 | 一种耐熔融铝腐蚀的金属陶瓷复合材料的制备方法 |
CN110846549B (zh) * | 2019-11-29 | 2021-04-13 | 湘潭大学 | 一种耐熔融铝腐蚀的金属陶瓷复合材料 |
CN112122695B (zh) * | 2020-08-31 | 2022-11-15 | 江苏华昌工具制造有限公司 | 一种激光焊接锯片的制备工艺 |
CN112238220B (zh) * | 2020-10-14 | 2022-07-05 | 泉州众志金刚石工具有限公司 | 一种隔层胎体材料及金刚石刀头的制备方法 |
CN112341993B (zh) * | 2020-11-23 | 2021-10-29 | 新乡市炬能耐材有限公司 | 一种具有交叉晶体结构的复合非氧化物磨削材料生产工艺 |
CN113305362B (zh) * | 2021-06-15 | 2024-04-02 | 青岛科技大学 | 一种通过超声波修复精密加工用烧结金刚石工具的方法 |
CN114472889B (zh) * | 2021-12-28 | 2024-02-20 | 苏州赛尔科技有限公司 | 一种金属结合剂超薄超精切割刀及制备方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1057983A (zh) * | 1990-07-12 | 1992-01-22 | 中国地质大学(武汉) | 金刚石锯片和带锯条的制造方法 |
JPH0839435A (ja) * | 1994-07-30 | 1996-02-13 | Shimadzu Corp | 砥 石 |
US5494537A (en) * | 1994-02-21 | 1996-02-27 | Nisshin Steel Co. Ltd. | High strength and toughness stainless steel strip and process for the production of the same |
CN1262979A (zh) * | 1999-02-07 | 2000-08-16 | 郑发龙 | 人造金刚石锯片结合剂 |
CN1290588A (zh) * | 1999-09-30 | 2001-04-11 | 梁建湘 | 一种金刚石制品添加剂 |
JP2001293602A (ja) * | 2000-04-11 | 2001-10-23 | Sumitomo Electric Ind Ltd | 切削工具とその製造方法および製造装置 |
CN1357424A (zh) * | 2001-08-13 | 2002-07-10 | 江苏理工大学 | 复合基金刚石园锯片刀头 |
CN1401454A (zh) * | 2002-05-09 | 2003-03-12 | 宜昌黑旋风锯业有限责任公司 | 超薄金刚石圆锯片基体及其制造方法 |
WO2003084718A1 (fr) * | 2002-04-04 | 2003-10-16 | A.L.M.T. Corp. | Lame diamantee |
-
2004
- 2004-03-19 CN CNB2004100229977A patent/CN100393466C/zh not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1057983A (zh) * | 1990-07-12 | 1992-01-22 | 中国地质大学(武汉) | 金刚石锯片和带锯条的制造方法 |
US5494537A (en) * | 1994-02-21 | 1996-02-27 | Nisshin Steel Co. Ltd. | High strength and toughness stainless steel strip and process for the production of the same |
JPH0839435A (ja) * | 1994-07-30 | 1996-02-13 | Shimadzu Corp | 砥 石 |
CN1262979A (zh) * | 1999-02-07 | 2000-08-16 | 郑发龙 | 人造金刚石锯片结合剂 |
CN1290588A (zh) * | 1999-09-30 | 2001-04-11 | 梁建湘 | 一种金刚石制品添加剂 |
JP2001293602A (ja) * | 2000-04-11 | 2001-10-23 | Sumitomo Electric Ind Ltd | 切削工具とその製造方法および製造装置 |
CN1357424A (zh) * | 2001-08-13 | 2002-07-10 | 江苏理工大学 | 复合基金刚石园锯片刀头 |
WO2003084718A1 (fr) * | 2002-04-04 | 2003-10-16 | A.L.M.T. Corp. | Lame diamantee |
CN1401454A (zh) * | 2002-05-09 | 2003-03-12 | 宜昌黑旋风锯业有限责任公司 | 超薄金刚石圆锯片基体及其制造方法 |
Non-Patent Citations (2)
Title |
---|
金刚石锯片性能与其刀头配方参数的量化关系探讨. 张绍和,文堂辉,刘志环.粉末冶金技术,第22卷第1期. 2004 |
金刚石锯片性能与其刀头配方参数的量化关系探讨. 张绍和,文堂辉,刘志环.粉末冶金技术,第22卷第1期. 2004 * |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.5.10 TO 2014.5.10; CHANGE OF CONTRACT Name of requester: HENAN SIFANG SUPERHARD MATERIALS CO., LTD. Effective date: 20081125 |
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Address after: No. seventh, 151 Avenue, Zhengzhou economic and Technological Development Zone, Henan Patentee after: SF DIAMOND Co.,Ltd. Address before: No. seventh, 151 Avenue, Zhengzhou economic and Technological Development Zone, Henan Patentee before: HENAN SIFANG SUPERHARD MATERIA |
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Owner name: HENAN SIFANGDA SUPERHARD MATERIALS CO., LTD. Free format text: FORMER NAME: HENAN SIFANG SUPERHARD MATERIALS CO., LTD. |
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Granted publication date: 20080611 |