CN105215864A - A kind of low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond and preparation method thereof - Google Patents
A kind of low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond and preparation method thereof Download PDFInfo
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- CN105215864A CN105215864A CN201510537564.3A CN201510537564A CN105215864A CN 105215864 A CN105215864 A CN 105215864A CN 201510537564 A CN201510537564 A CN 201510537564A CN 105215864 A CN105215864 A CN 105215864A
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Abstract
The invention discloses a kind of low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond, this emery wheel in preparation process first to the CBN abrasive material of Ultra-fine, fused mullite abrasive material carries out pretreatment, improve its mechanical property and the cementability with binding agent, and with kayexalate, abrasive material after the solution-treated of the preparation such as polymine and ball-shaped silicon micro powder, the dispersiveness of the materials such as Nano diamond is good, not easily reunite, formed in the solution and do not precipitate, the stabilising system of flocculation, wetability and the compatibility of dried powder and binding agent are better, adhesion strength is large, 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, and thermal deformation coefficient is little, and thermal insulation is good, and grinding work piece precision is high, speed fast, and surface abrasion rate is low, long service life.
Description
Technical field
The present invention relates to Ultra-fine CBN emery wheel preparing technical field, particularly relate to a kind of low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond 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-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond and preparation method thereof.
The present invention is achieved by the following technical solutions:
Containing the low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel of Nano diamond, this emery wheel is made up of the raw material of following weight portion: fused mullite abrasive material 12-14, the Nano diamond 1-2 of CBN abrasive material 30-40, the ball-shaped silicon micro powder 6-8 of granularity≤5 μm, granularity≤5 μm, 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 1-1.5, deionized water 60-65.
Described a kind of low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond, 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-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond and preparation method thereof, its spy is, described preparation method is:
(1) first CBN abrasive material, fused mullite abrasive material 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, fused mullite abrasive material carries out pretreatment, abrasive surface after process is regular, smooth, impurity content is few, its mechanical property and being all improved with the adhesive property of binding agent, and with kayexalate, abrasive material after the solution-treated of the preparation such as polymine and ball-shaped silicon micro powder, the dispersiveness of the materials such as Nano diamond 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 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, and thermal deformation coefficient is little, and thermal insulation is good, and grinding work piece precision is high, speed fast, and surface abrasion rate is low, long service life.
Detailed description of the invention
The emery wheel of this embodiment is made up of the raw material of following weight portion: the fused mullite abrasive material 12 of the CBN abrasive material 30 of granularity≤5 μm, ball-shaped silicon micro powder 6, granularity≤5 μm, Nano diamond 1, binding agent 2, lithium bentonite 1, hydrofluoric acid (concentration 40%) are appropriate, kayexalate 0.5, polymine 0.4, shitosan 1, 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 embodiment emery wheel is:
(1) first CBN abrasive material, fused mullite abrasive material 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 352% than average, and the average currying work interval extends 8 times, extends more than 8 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 162m/s.
Claims (3)
1. the low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond, it is characterized in that, this emery wheel is made up of the raw material of following weight portion: fused mullite abrasive material 12-14, the Nano diamond 1-2 of CBN abrasive material 30-40, the ball-shaped silicon micro powder 6-8 of granularity≤5 μm, granularity≤5 μm, 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 1-1.5, deionized water 60-65.
2. a kind of low-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond 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-thermal-expansion heat-resistance type Ultra-fine CBN emery wheel containing Nano diamond and preparation method thereof as claimed in claim 1, its spy is, described preparation method is:
(1) first CBN abrasive material, fused mullite abrasive material 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106891274A (en) * | 2017-04-19 | 2017-06-27 | 台山市远鹏研磨科技有限公司 | A kind of wet type precision polishing wheel and preparation method thereof |
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| US20100037530A1 (en) * | 2007-03-26 | 2010-02-18 | Yuji Yoshida | Synthetic grinding stone |
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Application publication date: 20160106 |