CN105234837A - Self-repairing ultra-fine granularity cubic boron nitride (CBN) grinding wheel for high-speed grinding and preparation method thereof - Google Patents
Self-repairing ultra-fine granularity cubic boron nitride (CBN) grinding wheel for high-speed grinding and preparation method thereof Download PDFInfo
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- CN105234837A CN105234837A CN201510537525.3A CN201510537525A CN105234837A CN 105234837 A CN105234837 A CN 105234837A CN 201510537525 A CN201510537525 A CN 201510537525A CN 105234837 A CN105234837 A CN 105234837A
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Abstract
The invention discloses a self-repairing ultra-fine granularity cubic boron nitride (CBN) grinding wheel for high-speed grinding. In the preparing process of the grinding wheel, ultra-fine granularity CBN abrasive materials and brown aluminum oxide abrasive materials are pre-processed in order to improve the mechanical performance and the adhesion performance with adhesives. The abrasive materials processed through a solution prepared from sodium polystyrenesulfonate, polyethyleneimine and the like, nanometer titania, nanometer stannic oxide and other powdery materials are good in dispersity and not prone to agglomeration, the abrasive materials form a stable system which does not precipitate and flocculate in the solution, the wettability and the compatibility of the dried powdery materials with the adhesives are better, and the adhesive strength is higher. By means of the adhesives mainly comprising fluorocarbon resin, the surface of the grinding wheel is smoother and easy to clean. The ultra-fine granularity CBN grinding wheel blank is high in hardness, good in self-sharpening performance, rapid in grinding and good in lubricity. The surface has the self-repairing capacity, the service life is prolonged, and the self-repairing ultra-fine granularity CBN grinding wheel for high-speed grinding can be applied to high-speed grinding of high-precision metal parts.
Description
Technical field
The present invention relates to Ultra-fine CBN emery wheel preparing technical field, particularly relate to a kind of high-speed grinding self-repair type Ultra-fine CBN emery wheel 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 high-speed grinding self-repair type Ultra-fine CBN emery wheel and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of high-speed grinding self-repair type Ultra-fine CBN emery wheel, this emery wheel is made up of the raw material of following weight portion: CBN abrasive material 30-40, the nano tin dioxide 1-2 of the brown corundum abrasive 10-14 of granularity≤5 μm, granularity≤5 μm, binding agent 2-3, lithium bentonite 1-2, nano titanium oxide 5-8, 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 high-speed grinding self-repair type Ultra-fine CBN emery wheel, 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 high-speed grinding self-repair type Ultra-fine CBN emery wheel and preparation method thereof, its spy is, described preparation method is:
(1) first CBN abrasive material, brown corundum abrasive 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, brown corundum abrasive carries out pretreatment, abrasive surface after process is regular, smooth, impurity content is few, its mechanical property and being all improved with the bonding force of binding agent, and with kayexalate, abrasive material after the solution-treated of the preparation such as polymine and nano titanium oxide, dispersiveness between the powders such as nano tin dioxide 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 large, and the binding agent based on fluorocarbon resin makes wheel face more bright and clean, be easy to cleaning, Ultra-fine CBN emery wheel idiosome hardness prepared by the present invention is high, and self-sharpening is good, and grinding is quick, and lubricity is good, and there is self-repairing capability on surface, and service life is extended, and can be applicable to high-precision metal parts high-speed 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 CBN abrasive material 30 of the brown corundum abrasive 10 of granularity≤5 μm, granularity≤5 μm, nano tin dioxide 1, binding agent 2, lithium bentonite 1, nano titanium oxide 5, 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, brown corundum abrasive 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 285% than average, and the average currying work interval extends 10 times, extends more than 6 times service life.Through the grinding of 60min, the roughness of surface of the work is only 0.03 μm, and surface of the work is without burn, and maximum grinding speed can reach 138m/s.
Claims (3)
1. a high-speed grinding self-repair type Ultra-fine CBN emery wheel, it is characterized in that, this emery wheel is made up of the raw material of following weight portion: CBN abrasive material 30-40, the nano tin dioxide 1-2 of the brown corundum abrasive 10-14 of granularity≤5 μm, granularity≤5 μm, binding agent 2-3, lithium bentonite 1-2, nano titanium oxide 5-8, 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 high-speed grinding self-repair type Ultra-fine CBN emery wheel 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 high-speed grinding self-repair type Ultra-fine CBN emery wheel as claimed in claim 1 and preparation method thereof, its spy is, described preparation method is:
(1) first CBN abrasive material, brown corundum abrasive 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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| CN201510537525.3A CN105234837A (en) | 2015-08-27 | 2015-08-27 | Self-repairing ultra-fine granularity cubic boron nitride (CBN) grinding wheel for high-speed grinding and preparation method thereof |
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| CN201510537525.3A CN105234837A (en) | 2015-08-27 | 2015-08-27 | Self-repairing ultra-fine granularity cubic boron nitride (CBN) grinding wheel for high-speed grinding and preparation method thereof |
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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 |
-
2015
- 2015-08-27 CN CN201510537525.3A patent/CN105234837A/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 |
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Application publication date: 20160113 |