CN1651544A - Grinding liquid used for grinding back surface of storage hard disk magnetic head - Google Patents
Grinding liquid used for grinding back surface of storage hard disk magnetic head Download PDFInfo
- Publication number
- CN1651544A CN1651544A CN 200510011128 CN200510011128A CN1651544A CN 1651544 A CN1651544 A CN 1651544A CN 200510011128 CN200510011128 CN 200510011128 CN 200510011128 A CN200510011128 A CN 200510011128A CN 1651544 A CN1651544 A CN 1651544A
- Authority
- CN
- China
- Prior art keywords
- magnetic head
- mineral oil
- alkane
- grinding
- oil
- 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
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- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000002480 mineral oil Substances 0.000 claims abstract description 15
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 15
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 11
- 239000010432 diamond Substances 0.000 claims abstract description 11
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 8
- -1 pentaerythritol ester Chemical class 0.000 claims description 11
- 239000003921 oil Substances 0.000 claims description 10
- 235000019198 oils Nutrition 0.000 claims description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 238000001802 infusion Methods 0.000 claims description 9
- 239000003112 inhibitor Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 6
- 239000003755 preservative agent Substances 0.000 claims description 6
- 230000002335 preservative effect Effects 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 239000013530 defoamer Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 150000003852 triazoles Chemical class 0.000 claims description 5
- OKTJSMMVPCPJKN-OUBTZVSYSA-N Carbon-13 Chemical compound [13C] OKTJSMMVPCPJKN-OUBTZVSYSA-N 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019484 Rapeseed oil Nutrition 0.000 claims description 3
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-BJUDXGSMSA-N carbon-11 Chemical compound [11C] OKTJSMMVPCPJKN-BJUDXGSMSA-N 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229920013639 polyalphaolefin Polymers 0.000 claims description 3
- 229920000053 polysorbate 80 Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 3
- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- 239000002216 antistatic agent Substances 0.000 abstract 1
- 239000002736 nonionic surfactant Substances 0.000 abstract 1
- 239000008041 oiling agent Substances 0.000 abstract 1
- 238000005498 polishing Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- OKTJSMMVPCPJKN-IGMARMGPSA-N Carbon-12 Chemical compound [12C] OKTJSMMVPCPJKN-IGMARMGPSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002113 nanodiamond Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
An abrasing liquid for abrasing the back of magnetic head for hard disc contains proportionally mineral oil containing C11-C13 alkane, oiling agent, superfine monocrystal diamond powder, antioxidizing anticorrosion agent, non-ionic surfactant, defoaming agent, and antistatic agent.
Description
Technical field
The present invention relates to a kind of lapping liquid that is used for grinding back surface of storage hard disk magnetic head, belong to surperficial fine abrasive technical field.
Background technology
The surface quality of memory, hard disk and magnetic head is the bottleneck of limits storage hard-disk capacity and storage density.In order to improve the surface quality of magnetic head, a lot of people have carried out a large amount of research.Present research is primarily aimed at the fine abrasive and the polishing in magnetic head front, and the research at the magnetic head back side is seldom related to.The surface quality at the magnetic head back side is all most important to the following process quality of eliminating magnetic head stress concentration phenomenon and magnetic head.The grinding to the magnetic head back side at present is to use and the positive identical lapping liquid of magnetic head, the lapping liquid that to be nano-diamond powder or diamond multicrystal super-fine powder form with oil medium of employing, and one side costs an arm and a leg, and grinding rate on the other hand is very low.
Summary of the invention
The purpose of this invention is to provide a kind of bortz powder granularity is micron-sized lapping liquid, the product surface roughness can be dropped to nano-scale, can be used in the grinding of back surface of storage hard disk magnetic head, head surface no marking after the grinding, surfaceness is 0.3～0.4nm, head surface unrelieved stress after grinding simultaneously is little, the mill efficiency height, and cost is low.
Magnetic head grinding back surface liquid of the present invention, contain alkane mineral oil, oiliness improver, bortz powder, antioxidant preservative, nonionic surface active agent, cut infusion and static inhibitor, described alkane mineral oil is carbon 11 to the normal paraffin mineral oil of carbon 13, in the isoparaffin mineral oil any; Described oiliness improver is rapeseed oil, in the Viscotrol C any in the pentaerythritol ester, poly-alpha olefins, natural exquisite vegetables oil in the synthetic oil; Described bortz powder is the diamond single crystal super-fine powder, and its particle mean size accounts for more than 95% 0.1～0.2 μ m's; Described antioxidant preservative can be ditertbutylparacresol antioxidizing and antigum agent T501, and be equipped with micro-124 Triazole derivative antioxidizing and antigum agent to increase its antioxygen synergism, and reduce the T501 consumption, also can adopt high-temperature antioxidant liquid mixing dialkyl diphenylamine; Described nonionic surface active agent can adopt any in polyoxyethylene 20 sorbitan monooleate, sorbitan mono-oleic acid ester, the fatty alcohol-polyoxyethylene ether; Describedly cut the non-silicon of 889D that infusion can adopt Lubrizol company and cut in the IRGALUBEAF1 liquid ester polymkeric substance defoamer that infusion, Ciba company produce any; Described static inhibitor is selected N for use, any in N-ethylene dibasic acid esters acid amides, the polyoxyethylene nonylphenol ether.
The weight proportion of described each component is as follows:
The mineral oil 50～94.79% of alkane
Oiliness improver 5～35%
Diamond super-fine powder 0.01%～5%
Antioxidant preservative 0.02～0.5%
Nonionic surface active agent 0.1～5%
Defoamer 0.03～1.5%
Static inhibitor 0.05～3.0%
The lapping liquid particle distribution that the present invention prepares is even, and dispersion stabilization is good, and the scene is used for the polishing at the computer magnetic head back side, and the surfaceness of measuring after polishing with atomic force microscope is 0.3～0.4nm, and the surface is polishing very.Mineral hydrocarbon oil and synthetic oil or natural exquisite vegetables oil play sufficient cooling and lubrication in polishing process, make the back side of computer magnetic head reach the working accuracy that needs in a short period of time.
Characteristics of the present invention:
Lapping liquid of the present invention can be used for the grinding of back surface of storage hard disk magnetic head, or is similar to the grinding of the metal or the nonmetallic surface at the magnetic head back side.In order to guarantee to have grinding rate than higher, can not produce cut and surperficial stain, do not cause the unrelieved stress after the grinding excessive, this lapping liquid has rational viscosity, 5～35% viscosity indexs have been added than higher synthetic oil or crude vegetal in the component simultaneously, this abrasive is had than higher viscosity index, in process of lapping, can be owing to the temperature viscosity degradation that raises causes lack of lubrication; Adopt the diamond single crystal super-fine powder simultaneously in this lapping liquid, its price is low, and the crystalline surface ratio is more sharp-pointed, helps improving grinding rate.Carry out the back surface of storage hard disk magnetic head fine abrasive with this lapping liquid, can obtain high-quality surface, can be used in simultaneously and be similar to the hard disc magnetic head back side and require very high metal of smooth finish or nonmetallic surface like this.
Embodiment:
Embodiment one: get single-crystal diamond super-fine powder 0.5g, polyoxyethylene (20) sorbitan monooleate nonionogenic tenside 2g, pentaerythritol ester 60g, carbon 12 normal paraffin mineral oil 240g, ditertbutylparacresol antioxidizing and antigum agent 1g, the non-silicon of 889D of 124 Triazole derivative antioxidizing and antigum agent 0.1g, Lubrizol company is cut infusion 1g, N, N-ethylene dibasic acid esters acid amides static inhibitor 1g, thorough mixing makes it become the lapping liquid of suspension.Grind the computer magnetic head back side with this lapping liquid, the surfaceness at the magnetic head back side can reach 0.3～0.4nm.
Embodiment two: get single-crystal diamond super-fine powder 0.8g, fatty alcohol-polyoxyethylene ether nonionogenic tenside 2g, poly-alpha olefins 80g, carbon 13 isoparaffin mineral oil 220g, ditertbutylparacresol antioxidizing and antigum agent 1.5g, the non-silicon of 889D of 124 Triazole derivative antioxidizing and antigum agent 0.1g, Lubrizol company is cut infusion 1g, N, N-ethylene dibasic acid esters acid amides static inhibitor 1g, thorough mixing makes it become the lapping liquid of suspension.Grind the computer magnetic head back side with this lapping liquid, the surfaceness at the magnetic head back side can reach 0.3～0.4nm.
Embodiment three: get single-crystal diamond super-fine powder 0.6g, sorbitan mono-oleic acid ester nonionogenic tenside 2g, natural refining rapeseed oil 50g, carbon 13 normal paraffin mineral oil 250g, high-temperature antioxidant liquid mixing dialkyl diphenylamine 1g, IRGALUBEAF1 liquid ester polymkeric substance defoamer 1g, polyoxyethylene nonylphenol ether 1g, thorough mixing makes it become the lapping liquid of suspension.Grind the computer magnetic head back side with this lapping liquid, the surfaceness at the magnetic head back side can reach 0.3～0.4nm.
Embodiment four: get single-crystal diamond super-fine powder 0.8g, fatty alcohol-polyoxyethylene ether nonionogenic tenside 2g, natural refined caster oil 30g, carbon 11 isoparaffin mineral oil 270g, ditertbutylparacresol antioxidizing and antigum agent 1.5g, the non-silicon of 889D of 124 Triazole derivative antioxidizing and antigum agent 0.1g, Lubrizol company is cut infusion 1g, N, N-ethylene dibasic acid esters acid amides static inhibitor 1g, thorough mixing makes it become the lapping liquid of suspension.
Claims (1)
1. a lapping liquid that is used for grinding back surface of storage hard disk magnetic head contains bortz powder, antioxidant preservative, nonionic surface active agent, cuts infusion and static inhibitor, it is characterized in that still containing the mineral oil and the oiliness improver of alkane; Any that described alkane mineral oil is carbon 11 in the alkane mineral oil of the normal paraffin mineral oil of carbon 13 and isomery; Described oiliness improver is rapeseed oil, in the Viscotrol C any in the pentaerythritol ester, poly-alpha olefins, natural exquisite vegetables oil in the synthetic oil; Described bortz powder is that diameter Distribution is the diamond single crystal body of 0.1～0.2 μ m; Described antioxidant preservative can be ditertbutylparacresol antioxidizing and antigum agent T501, and is equipped with in the micro-124 Triazole derivative antioxidizing and antigum agent high-temperature antioxidant liquid mixing dialkyl diphenylamine any; Described nonionic surface active agent can adopt any in polyoxyethylene 20 sorbitan monooleate, sorbitan mono-oleic acid ester, the fatty alcohol-polyoxyethylene ether; Describedly cut the non-silicon of 889D that infusion can adopt Lubrizol company and cut in the IRGALUBE AF 1 liquid ester polymkeric substance defoamer that infusion, Ciba company produce any; Described static inhibitor can be selected N for use, any in N-ethylene dibasic acid esters acid amides, the polyoxyethylene nonylphenol ether.
The weight proportion of described each component is as follows:
The mineral oil 50～94.79% of alkane
Oiliness improver 5～35%
Diamond super-fine powder 0.01%～5%
Antioxidant preservative 0.02～0.5%
Nonionic surface active agent 0.1～5%
Defoamer 0.03～1.5%
Static inhibitor 0.05～3.0%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510011128 CN1279137C (en) | 2005-01-07 | 2005-01-07 | Grinding liquid used for grinding back surface of storage hard disk magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510011128 CN1279137C (en) | 2005-01-07 | 2005-01-07 | Grinding liquid used for grinding back surface of storage hard disk magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1651544A true CN1651544A (en) | 2005-08-10 |
| CN1279137C CN1279137C (en) | 2006-10-11 |
Family
ID=34875469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510011128 Expired - Fee Related CN1279137C (en) | 2005-01-07 | 2005-01-07 | Grinding liquid used for grinding back surface of storage hard disk magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1279137C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891803B (en) * | 2006-05-19 | 2010-05-12 | 赵国春 | Nano lubricating oil for internal combustion engine, and its preparing method |
| CN102268225A (en) * | 2011-05-30 | 2011-12-07 | 上海百兰朵电子科技有限公司 | Permanent-suspension diamond grinding liquid |
| CN102295888A (en) * | 2005-09-09 | 2011-12-28 | 圣戈本陶瓷及塑料股份有限公司 | Conductive hydrocarbon fluid |
| CN102337084A (en) * | 2011-07-25 | 2012-02-01 | 郑州磨料磨具磨削研究所 | Grinding fluid for processing LED (light-emitting diode) substrate and preparation method thereof |
| CN101275065B (en) * | 2007-03-26 | 2013-07-31 | 富士胶片株式会社 | Lapping liquid |
| CN101979450B (en) * | 2009-11-05 | 2013-10-23 | 北京天科合达蓝光半导体有限公司 | Grinding liquid and preparation method thereof and grinding method using grinding liquid |
| CN105647475A (en) * | 2015-12-31 | 2016-06-08 | 河南省联合磨料磨具有限公司 | Water-soluble and oil-soluble diamond grinding liquid and preparation method thereof |
| CN106701019A (en) * | 2016-12-29 | 2017-05-24 | 东莞市淦宏信息科技有限公司 | Improved ceramic plate grinding fluid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565831B (en) * | 2009-04-30 | 2012-01-18 | 深圳市科玺化工有限公司 | Cyclic renewable water-based cleaning agent and cyclic renewing technology |
-
2005
- 2005-01-07 CN CN 200510011128 patent/CN1279137C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295888A (en) * | 2005-09-09 | 2011-12-28 | 圣戈本陶瓷及塑料股份有限公司 | Conductive hydrocarbon fluid |
| CN1891803B (en) * | 2006-05-19 | 2010-05-12 | 赵国春 | Nano lubricating oil for internal combustion engine, and its preparing method |
| CN101275065B (en) * | 2007-03-26 | 2013-07-31 | 富士胶片株式会社 | Lapping liquid |
| CN101979450B (en) * | 2009-11-05 | 2013-10-23 | 北京天科合达蓝光半导体有限公司 | Grinding liquid and preparation method thereof and grinding method using grinding liquid |
| CN102268225A (en) * | 2011-05-30 | 2011-12-07 | 上海百兰朵电子科技有限公司 | Permanent-suspension diamond grinding liquid |
| CN102268225B (en) * | 2011-05-30 | 2014-03-26 | 上海百兰朵电子科技有限公司 | Permanent-suspension diamond grinding liquid |
| CN102337084A (en) * | 2011-07-25 | 2012-02-01 | 郑州磨料磨具磨削研究所 | Grinding fluid for processing LED (light-emitting diode) substrate and preparation method thereof |
| CN105647475A (en) * | 2015-12-31 | 2016-06-08 | 河南省联合磨料磨具有限公司 | Water-soluble and oil-soluble diamond grinding liquid and preparation method thereof |
| CN105647475B (en) * | 2015-12-31 | 2017-12-01 | 河南联合精密材料股份有限公司 | Oily two molten diamond grinding fluids of a kind of water and preparation method thereof |
| CN106701019A (en) * | 2016-12-29 | 2017-05-24 | 东莞市淦宏信息科技有限公司 | Improved ceramic plate grinding fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1279137C (en) | 2006-10-11 |
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Granted publication date: 20061011 Termination date: 20140107 |