CN105234836A - Low-frictional-loss superfine-grained cubic boron nitride (CBN) grinding wheel containing potassium hexatitanate whiskers and preparation method thereof - Google Patents
Low-frictional-loss superfine-grained cubic boron nitride (CBN) grinding wheel containing potassium hexatitanate whiskers and preparation method thereof Download PDFInfo
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- CN105234836A CN105234836A CN201510537523.4A CN201510537523A CN105234836A CN 105234836 A CN105234836 A CN 105234836A CN 201510537523 A CN201510537523 A CN 201510537523A CN 105234836 A CN105234836 A CN 105234836A
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Abstract
The invention discloses a low-frictional-loss superfine-grained cubic boron nitride (CBN) grinding wheel containing potassium hexatitanate whiskers. During preparation of the grinding wheel, superfine-grained CBN grinding materials and sintered magnesium aluminate spinel sand are pretreated so as to improve the mechanical properties of the grinding materials and the sintered magnesium aluminate spinel sand; the dispersity of powder which is treated through a solution prepared from sodium polystyrene sulfonate, polyethyleneimine and the like is good, the treated powder is not prone to be agglomerated, and a non-precipitation flocculent stable system is formed in the solution; wettability and compatibility of the dried powder and an adhesion agent is better, the adhesion strength is high, and cracking is not prone to occur; by means of added potassium hexatitanate whiskers and nanometer barium sulfate, the friction sliding performance of the grinding wheel is effectively improved, and the friction loss is reduced; fluorocarbon resins serve as the adhesion agent, so that the surface of the grinding wheel is smoother, not prone to attract waste chips and easy to clean. A prepared blank of the superfine-grained CBN grinding wheel is high in strength, compact in structure, high in grinding efficiency and applicable to grinding high-accuracy metal parts.
Description
Technical field
The present invention relates to Ultra-fine CBN emery wheel technical field, particularly relate to a kind of low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate and preparation method thereof.
Background technology
Ultra-fine CBN emery wheel refers to the class emery wheel made with the CBN abrasive material of Ultra-fine (≤5 μm) and bonding agent, this kind of emery wheel has lower surface roughness and surface damage than traditional emery wheel material, the precision of polishing, grinding is higher, more can improve component surface quality, be also an important directions of emery wheel industry development.
In production technology, due to the Ultra-fine of abrasive material, easily reunite between abrasive material, be deteriorated with the associativity of bonding agent, the emery wheel prepared so just very easily produces cut to surface of the work, affect workpiece quality, therefore, need in process of production to carry out pretreatment to ultra-fine abrasive material, improve compatibility and the dispersiveness of itself and binding agent, development is simultaneously applicable to the binding agent of ultra-fine grain diameter abrasive material, to obtain the finished product of low surface roughness.Also there is the shortcomings such as working (machining) efficiency is low, production cost is higher in the technology preparing Ultra-fine emery wheel at present, needs to improve further and optimizing raw material formula and preparation technology.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate and preparation method thereof.
The present invention is achieved by the following technical solutions:
Containing the low frictional dissipation Ultra-fine CBN emery wheel of crystal whisker of hexa potassium titanate, this emery wheel is made up of the raw material of following weight portion: the sintering magnesium aluminate spinel sand 14-18 of the CBN abrasive material 35-40 of granularity≤5 μm, granularity≤5 μm, crystal whisker of hexa potassium titanate 5-6, nano barium sulfate 3-4, binding agent 2-3, lithium bentonite 1-2, hydrofluoric acid (concentration 40%) are appropriate, kayexalate 0.5-0.8, polymine 0.4-0.5, shitosan 0.4-0.5, deionized water 60-65.
Described a kind of low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate, described binding agent is made up of the raw material of following weight portion: solid content is that water-base fluorocarbon emulsion 12-15, the sodium alginate 4-5 of 40-45%, nano silicon 2-3, deionized water are appropriate; Its preparation method is: be dissolved in appropriate deionized water by sodium alginate, is stirred to it and dissolves completely, adds water-base fluorocarbon emulsion, nano silicon subsequently, and ultrasonic agitation is dispersed to material and mixes completely and be uniformly dispersed and get final product.
Described a kind of low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate and preparation method thereof, its spy is, described preparation method is:
(1) first CBN abrasive material, sintering magnesium aluminate spinel sand are dropped into dipping pretreatment 30-40min in hydrofluoric acid solution, filter subsequently, be washed to neutrality, drying for standby;
(2) kayexalate, polymine are dropped in deionized water, be stirred to after material dissolves completely, add the compound abrasive that step (1) obtains, be uniformly mixed, drop into other residual components except binding agent subsequently again, for subsequent use after leaving standstill 1-2h after being uniformly mixed 30-40min;
(3) by the dry process under 80-100 DEG C of condition of step (2) gained material, dried material is broken, cross 200-300 mesh sieve, screened material is mixed with binding agent, by mixed material ball milling dispersion 20-30min after being uniformly mixed, material is die-filling, shaping, the demoulding subsequently, obtain idiosome emery wheel, wherein briquetting pressure is 40-50MPa, subsequently idiosome emery wheel to be sent in the baking oven of 70-80 DEG C after dry 5-6h with the ramp of 4-5 DEG C/min to 230-250 DEG C, naturally cool to room temperature after insulation 4-5h and namely obtain this Ultra-fine CBN emery wheel.
The present invention first utilizes hydrofluoric acid to the CBN abrasive material of Ultra-fine, sintering magnesium aluminate spinel sand carries out pretreatment, abrasive surface after process is regular, smooth, impurity content reduces, its mechanical property improves, better with the adhesive strength of binding agent, with kayexalate, abrasive material dispersiveness after the solution-treated of the preparation such as polymine is good, not easily reunite, add shitosan, after the raw materials such as lithium bentonite, abrasive material is formed in the solution and does not precipitate, the stabilising system of flocculation, wetability and the compatibility of dried powder and binding agent are better, adhesion strength is high, not easy to crack, the crystal whisker of hexa potassium titanate added, nano barium sulfate effectively raises the Frictional Slipping of emery wheel, reduce frictional dissipation, and make wheel face more bright and clean using fluorocarbon resin as binding agent, not easily adhere to scrap, be easy to cleaning, Ultra-fine CBN emery wheel idiosome intensity prepared by the present invention is high, compact structure, and grinding efficiency is high, can be applicable to high-precision metal parts grinding and uses.
Detailed description of the invention
The emery wheel of this embodiment is made up of the raw material of following weight portion: the sintering magnesium aluminate spinel sand 14 of the CBN abrasive material 35 of granularity≤5 μm, granularity≤5 μm, crystal whisker of hexa potassium titanate 5, nano barium sulfate 3, binding agent 2, lithium bentonite 1, hydrofluoric acid (concentration 40%) are appropriate, kayexalate 0.5, polymine 0.4, shitosan 0.4, deionized water 60.
Binding agent is wherein made up of the raw material of following weight portion: solid content be 40% water-base fluorocarbon emulsion 12, sodium alginate 4, nano silicon 2, deionized water appropriate; Its preparation method is: be dissolved in appropriate deionized water by sodium alginate, is stirred to it and dissolves completely, adds water-base fluorocarbon emulsion, nano silicon subsequently, and ultrasonic agitation is dispersed to material and mixes completely and be uniformly dispersed and get final product.
The preparation method of this emery wheel is:
(1) first CBN abrasive material, sintering magnesium aluminate spinel sand are dropped into dipping pretreatment 30min in hydrofluoric acid solution, filter subsequently, be washed to neutrality, drying for standby;
(2) kayexalate, polymine are dropped in deionized water, be stirred to after material dissolves completely, add the compound abrasive that step (1) obtains, be uniformly mixed, drop into other residual components except binding agent subsequently again, for subsequent use after leaving standstill 1h after being uniformly mixed 30min;
(3) by the dry process under 80 DEG C of conditions of step (2) gained material, dried material is broken, cross 200 mesh sieves, screened material is mixed with binding agent, by mixed material ball milling dispersion 20min after being uniformly mixed, material is die-filling, shaping, the demoulding subsequently, obtain idiosome emery wheel, wherein briquetting pressure is 40MPa, subsequently idiosome emery wheel to be sent in the baking oven of 70 DEG C with the ramp to 230 DEG C of 4 DEG C/min after dry 5h, naturally cool to room temperature after insulation 4h and namely obtain this Ultra-fine CBN emery wheel.
The grinding wheel performance index that embodiment prepares is as follows:
Being ground material in test is tool steel, and grinding method is transverse grinding, emery wheel peripheral speed: 100m/s, the speed of table: 0.05m/s, grinding depth: 0.025mm.
The more traditional resin CBN wheel grinding of the emery wheel prepared of the present embodiment improves 385% than average, and the average currying work interval extends 8 times, extends more than 10 times service life.Through the grinding of 60min, the roughness of surface of the work is only 0.02 μm, and surface of the work is without burn, and maximum grinding speed can reach 154m/s.
Claims (3)
1. the low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate, it is characterized in that, this emery wheel is made up of the raw material of following weight portion: the sintering magnesium aluminate spinel sand 14-18 of the CBN abrasive material 35-40 of granularity≤5 μm, granularity≤5 μm, crystal whisker of hexa potassium titanate 5-6, nano barium sulfate 3-4, binding agent 2-3, lithium bentonite 1-2, hydrofluoric acid (concentration 40%) are appropriate, kayexalate 0.5-0.8, polymine 0.4-0.5, shitosan 0.4-0.5, deionized water 60-65.
2. a kind of low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate as claimed in claim 1, it is characterized in that, described binding agent is made up of the raw material of following weight portion: solid content is that water-base fluorocarbon emulsion 12-15, the sodium alginate 4-5 of 40-45%, nano silicon 2-3, deionized water are appropriate; Its preparation method is: be dissolved in appropriate deionized water by sodium alginate, is stirred to it and dissolves completely, adds water-base fluorocarbon emulsion, nano silicon subsequently, and ultrasonic agitation is dispersed to material and mixes completely and be uniformly dispersed and get final product.
3. a kind of low frictional dissipation Ultra-fine CBN emery wheel containing crystal whisker of hexa potassium titanate and preparation method thereof as claimed in claim 1, its spy is, described preparation method is:
(1) first CBN abrasive material, sintering magnesium aluminate spinel sand are dropped into dipping pretreatment 30-40min in hydrofluoric acid solution, filter subsequently, be washed to neutrality, drying for standby;
(2) kayexalate, polymine are dropped in deionized water, be stirred to after material dissolves completely, add the compound abrasive that step (1) obtains, be uniformly mixed, drop into other residual components except binding agent subsequently again, for subsequent use after leaving standstill 1-2h after being uniformly mixed 30-40min;
(3) by the dry process under 80-100 DEG C of condition of step (2) gained material, dried material is broken, cross 200-300 mesh sieve, screened material is mixed with binding agent, by mixed material ball milling dispersion 20-30min after being uniformly mixed, material is die-filling, shaping, the demoulding subsequently, obtain idiosome emery wheel, wherein briquetting pressure is 40-50MPa, subsequently idiosome emery wheel to be sent in the baking oven of 70-80 DEG C after dry 5-6h with the ramp of 4-5 DEG C/min to 230-250 DEG C, naturally cool to room temperature after insulation 4-5h and namely obtain this Ultra-fine CBN emery wheel.
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| CN201510537523.4A CN105234836A (en) | 2015-08-27 | 2015-08-27 | Low-frictional-loss superfine-grained cubic boron nitride (CBN) grinding wheel containing potassium hexatitanate whiskers and preparation method thereof |
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| CN201510537523.4A CN105234836A (en) | 2015-08-27 | 2015-08-27 | Low-frictional-loss superfine-grained cubic boron nitride (CBN) grinding wheel containing potassium hexatitanate whiskers and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838392A (en) * | 2018-09-01 | 2018-11-20 | 芜湖德加智能科技有限公司 | Whole PC BN blade binder and preparation method thereof |
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| CN1253963A (en) * | 1998-11-17 | 2000-05-24 | 不二见株式会社 | Grinding composite and potching composite |
| CN1597259A (en) * | 2004-09-08 | 2005-03-23 | 华侨大学 | Preparation method of diamond grinding polishing sheet |
| CN103846824A (en) * | 2014-02-11 | 2014-06-11 | 当涂县南方红月磨具磨料有限公司 | Cubic boron nitride grinding wheel with high abrasion resistance |
| CN104440619A (en) * | 2014-11-20 | 2015-03-25 | 云南光电辅料有限公司 | Method for improving processing finish degree of resin grinding wheel |
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2015
- 2015-08-27 CN CN201510537523.4A patent/CN105234836A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253963A (en) * | 1998-11-17 | 2000-05-24 | 不二见株式会社 | Grinding composite and potching composite |
| CN1597259A (en) * | 2004-09-08 | 2005-03-23 | 华侨大学 | Preparation method of diamond grinding polishing sheet |
| CN103846824A (en) * | 2014-02-11 | 2014-06-11 | 当涂县南方红月磨具磨料有限公司 | Cubic boron nitride grinding wheel with high abrasion resistance |
| CN104440619A (en) * | 2014-11-20 | 2015-03-25 | 云南光电辅料有限公司 | Method for improving processing finish degree of resin grinding wheel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838392A (en) * | 2018-09-01 | 2018-11-20 | 芜湖德加智能科技有限公司 | Whole PC BN blade binder and preparation method thereof |
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