CN103056785B - Method for preparing vitrified grinding wheels with metal matrixes for grinding stainless steel and titanium alloys - Google Patents
Method for preparing vitrified grinding wheels with metal matrixes for grinding stainless steel and titanium alloys Download PDFInfo
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- CN103056785B CN103056785B CN201210558024.XA CN201210558024A CN103056785B CN 103056785 B CN103056785 B CN 103056785B CN 201210558024 A CN201210558024 A CN 201210558024A CN 103056785 B CN103056785 B CN 103056785B
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Abstract
The invention relates to a method for preparing vitrified grinding wheels with metal matrixes for grinding stainless steel and titanium alloys. The method comprises subjecting raw materials to mixing, molding, drying, roasting and combining. The raw materials comprise, by mass, 60% to 85% of abrasives and 15% to 40% of binding agents, wherein the binding agents is composed of 15% to 35% of clay powder, 15% to 35% of feldspar powder and 35% to 60% of borax glass. The roasting process is performed in a weakly reducing atmosphere. The grinding efficiency of the vitrified grinding wheels produced by the method is 10 to 100 times of that of resin grinding wheels, and abrasions are only 0.01 of those of the resin grinding wheels; the vitrified grinding wheels can be used safely at a linear speed of 80 m/s; and simultaneously, the worker labor intensity is reduced, and the working environment is improved.
Description
Technical field
The invention belongs to field of machining, be specifically related to the preparation method of the vitrified abrasive of a kind of Metal Substrate grinding stainless steel and titanium alloy.
Background technology
The toughness of stainless steel material is large, and calorific intensity is high, and cutting resistance is large, and under the influence of high pressure and temperature, abrasive dust easily sticks on plain wheel, fills up the space between abrasive particle, and surface of the work easily produces the phenomenons such as burn, annealing.Stainless linear expansion coefficient is large, easily produces distortion under the effect of grinding heat, and size is difficult to control.
Titanium alloy material has excellent physical and mechanical properties: proportion is little, specific strength is high, high temperature resistant, corrosion-resistant, nonmagnetic, elastic modelling quantity is high.Be widely used at industrial circles such as Aeronautics and Astronautics, petrochemical industry, automobile, medical treatment because it has a series of premium properties.But certain some physical and mechanical properties wherein also bring difficulty to grinding, and titanium alloy grinding temperature is high, grinding force is large, adopts plain wheel serious wear, easily bonds.
Vitrified abrasive is better than the emery wheel of other bonding agents due to the compatibility of bonding agent and abrasive material and self-sharpening, therefore the high-end grinding such as tool grinder and shaping mill is widely used in, particularly the wearability of its uniqueness and sharpness make it be able to a large amount of application in metal removal and nonmetal grinding field, but due to the fault of construction of himself, the linear velocity of vitrified abrasive safe handling is generally at 35m/s to 60m/s, and electric tool and pneumatic tools Generally Recognized as safe use linear velocity at about 80m/s, only be improved the safe handling linear velocity of vitrified abrasive, just can be applied to the grinding of electric tool and pneumatic tools.During ordinary resin wheel grinding, grinding efficiency is low, wears away high, time and effort consuming, and the labour intensity of workman is high, easily pollutes surrounding environment simultaneously.The present invention adopts special technique and material, produces with electric tool and pneumatic tools the vitrified abrasive used when stainless steel and titanium alloy material grinding.
Summary of the invention
The object of the invention is for prior art defect, provide a kind of electric tool and pneumatic tools to the preparation method of the vitrified abrasive used when stainless steel and titanium alloy material grinding.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
A preparation method for the vitrified abrasive of Metal Substrate grinding stainless steel and titanium alloy, comprises the steps:
(1) composition of raw material: by percentage to the quality, abrasive material 60 ~ 85%, bonding agent 15 ~ 40%; Consisting of of described bonding agent: clay powder 15 ~ 35%, feldspar powder 15 ~ 35%, boron glass powder 35 ~ 60%;
(2) the abrasive material 12%wt sodium silicate solution uniform wet described in step (1) is obtained mixture A by the mixing of raw material: a.; B., under stirring, in Lancaster mixer, mixture A is added; C. under stirring, in mixture A, add the bonding agent described in step (1), after stirring 10 ~ 45min, stop stirring obtaining mixture B; D. mixture B is crossed the screen cloth between 24# ~ 46#;
(3) formative stage: by die-filling, shaping for the mixture B sieved, the demoulding, obtain idiosome emery wheel, described shaping employing isostatic pressing process, pressure is 20 ~ 22MPa;
(4) drying stage: idiosome emery wheel is carried out drying, described drying condition is: be heated to 90 ~ 110 DEG C from room temperature through 2.5 ~ 4h, then by heating temperatures to 140 ~ 150 DEG C needs 3 ~ 4.5h, in whole dry run, relative humidity controls 10 ~ 50%;
(5) firing stage: the idiosome sand that step (4) is obtained carries out roasting, described roasting condition is: be heated to 280 ~ 320 DEG C from room temperature through 2.5 ~ 4h, then by heating temperatures to 500 ~ 560 DEG C needs 3 ~ 4h, continue heating temperatures to 800 ~ 1000 DEG C needs 9 ~ 12h, then naturally cool to room temperature, whole roasting process at ambient pressure, calcination atmosphere is in weakly reducing atmosphere and carries out;
(6) Assembly Phase: the idiosome emery wheel that step (5) is obtained carries out fine finishining process, is then fixed on metallic matrix by idiosome emery wheel, obtains product.
Abrasive material described in step (1) is any one in fused alumina zirconia, SG or CBN.
Abrasive material described in step (1) is crossed 24# ~ 60# screen cloth and is obtained.
Weakly reducing atmosphere described in step (5) is by regulating the air inflow volume ratio of methane and air to be 2:1 to 4:1.
Metallic matrix described in step (6) is stainless steel or magnadure.
Step (6) described fixing means passes through epoxy bond.
The invention has the beneficial effects as follows:
1. be 10 to 100 times of resin wheel with the vitrified abrasive grinding efficiency that the present invention produces, abrasion are only 0.01 of resin wheel, reduce the labour intensity of workman, improve working environment.
2., with the vitrified abrasive that the present invention produces, speed of gyration is stabilized in 128 ~ 144m/s, can use safely under 80 m/s linear velocities.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but do not limit content of the present invention.
Embodiment 1
A preparation method for the vitrified abrasive of Metal Substrate grinding stainless steel and titanium alloy, comprises the steps:
(1) composition of raw material: by percentage to the quality, fused alumina zirconia abrasive material 70%, bonding agent 30%; Consisting of of bonding agent: clay powder 30%, feldspar powder 30%, boron glass powder 40%;
(2) the abrasive material 12%wt sodium silicate solution uniform wet described in step (1) is obtained mixture A by the mixing of raw material: a.; B., under stirring, in Lancaster mixer, mixture A is added; C. under stirring, in mixture A, add the bonding agent described in step (1), after stirring 30min, stop stirring obtaining mixture B; D. mixture B is crossed 24# screen cloth;
(3) formative stage: by die-filling, shaping for the mixture B sieved, the demoulding, obtain idiosome emery wheel, shaping employing isostatic pressing process, pressure is 20MPa;
(4) drying stage: be placed in baking oven by idiosome emery wheel and carry out drying, described drying condition is: be heated to 100 DEG C from room temperature through 3h, then by heating temperatures to 145 DEG C needs 3h, in whole dry run, relative humidity controls 30%;
(5) firing stage: the idiosome emery wheel that step (4) is obtained is placed in Muffle furnace, described roasting condition is: be heated to 300 DEG C from room temperature through 3h, then by heating temperatures to 550 DEG C needs 3h, continue heating temperatures to 1000 DEG C needs 10h, then room temperature is naturally cooled to, atmosphere is in weakly reducing atmosphere and carries out whole roasting process at ambient pressure, in Muffle furnace, and weakly reducing atmosphere is by regulating the air inflow volume ratio of methane and air to be that 3:1 obtains;
(6) Assembly Phase: idiosome emery wheel obtained for step (5) is carried out fine finishining process, then by idiosome emery wheel by epoxy bond on stainless steel metal matrix, obtain product.
Embodiment 2
The present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, fused alumina zirconia abrasive material 60%, bonding agent 40%; Consisting of of bonding agent: clay powder 35%, feldspar powder 20%, boron glass powder 45%.
Embodiment 3
The present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, fused alumina zirconia abrasive material 85%, bonding agent 15%; Consisting of of bonding agent: clay powder 25%, feldspar powder 15%, boron glass powder 60%.
Embodiment 4
The present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, fused alumina zirconia abrasive material 75%, bonding agent 25%; Consisting of of bonding agent: clay powder 25%, feldspar powder 35%, boron glass powder 40%.
Embodiment 5
The present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, fused alumina zirconia abrasive material 65%, bonding agent 35%; Consisting of of bonding agent: clay powder 15%, feldspar powder 35%, boron glass powder 50%.
Embodiment 6
The present embodiment and embodiment 1 same section no longer repeat, and difference is that the fused alumina zirconia abrasive material SG abrasive material described in composition of step (1) Raw substitutes.
Embodiment 7
The present embodiment and embodiment 1 same section no longer repeat, and difference is that the fused alumina zirconia abrasive material SG abrasive material described in composition of step (1) Raw substitutes.
Embodiment 8
The present embodiment and embodiment 1 same section no longer repeat, and difference is that the fused alumina zirconia abrasive material CBN abrasive material described in composition of step (1) Raw substitutes.
Embodiment 9
The present embodiment and embodiment 1 same section no longer repeat, and difference is, in step (2), mixture B is crossed 46# screen cloth.
Embodiment 10
The present embodiment and embodiment 1 same section no longer repeat, difference be in step (6) by idiosome emery wheel by epoxy bond on magnadure matrix.
Claims (6)
1. a preparation method for the vitrified abrasive of Metal Substrate grinding stainless steel and titanium alloy, is characterized in that comprising the steps:
(1) composition of raw material: by percentage to the quality, abrasive material 60 ~ 85%, bonding agent 15 ~ 40%; Consisting of of described bonding agent: clay powder 15 ~ 35%, feldspar powder 15 ~ 35%, boron glass powder 35 ~ 60%;
(2) the abrasive material 12%wt sodium silicate solution uniform wet described in step (1) is obtained mixture A by the mixing of raw material: a.; B., under stirring, in Lancaster mixer, mixture A is added; C. under stirring, in mixture A, add the bonding agent described in step (1), after stirring 10 ~ 45min, stop stirring obtaining mixture B; D. mixture B is crossed the screen cloth between 24# ~ 46#;
(3) formative stage: by die-filling, shaping for the mixture B sieved, the demoulding, obtain idiosome emery wheel, described shaping employing isostatic pressing process, pressure is 20 ~ 22MPa;
(4) drying stage: idiosome emery wheel is carried out drying, described drying condition is: be heated to 90 ~ 110 DEG C from room temperature through 2.5 ~ 4h, then by heating temperatures to 140 ~ 150 DEG C needs 3 ~ 4.5h, in whole dry run, relative humidity controls 10 ~ 50%;
(5) firing stage: the idiosome sand that step (4) is obtained carries out roasting, described roasting condition is: be heated to 280 ~ 320 DEG C from room temperature through 2.5 ~ 4h, then by heating temperatures to 500 ~ 560 DEG C needs 3 ~ 4h, continue heating temperatures to 800 ~ 1000 DEG C needs 9 ~ 12h, then naturally cool to room temperature, whole roasting process at ambient pressure, calcination atmosphere is in weakly reducing atmosphere and carries out;
(6) Assembly Phase: the idiosome emery wheel that step (5) is obtained carries out fine finishining process, is then fixed on metallic matrix by idiosome emery wheel, obtains product.
2. the preparation method of vitrified abrasive according to claim 1, is characterized in that: the abrasive material described in step (1) is any one in fused alumina zirconia, SG or CBN.
3. the preparation method of vitrified abrasive according to claim 1, is characterized in that: the abrasive material described in step (1) is crossed 24# ~ 60# screen cloth and obtained.
4. the preparation method of vitrified abrasive according to claim 1, is characterized in that: the weakly reducing atmosphere described in step (5) is by regulating the air inflow volume ratio of methane and air to be 2:1 to 4:1.
5. the preparation method of vitrified abrasive according to claim 1, is characterized in that: the metallic matrix described in step (6) is stainless steel or magnadure.
6. the preparation method of vitrified abrasive according to claim 1, is characterized in that: step (6) described fixing means passes through epoxy bond.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210558024.XA CN103056785B (en) | 2012-12-20 | 2012-12-20 | Method for preparing vitrified grinding wheels with metal matrixes for grinding stainless steel and titanium alloys |
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| CN201210558024.XA CN103056785B (en) | 2012-12-20 | 2012-12-20 | Method for preparing vitrified grinding wheels with metal matrixes for grinding stainless steel and titanium alloys |
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| CN103056785B true CN103056785B (en) | 2015-05-06 |
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| CN104669134A (en) * | 2015-01-30 | 2015-06-03 | 洛阳希微磨料磨具有限公司 | Production method of abrasive grinding wheel |
| CN105856082B (en) * | 2016-06-08 | 2018-11-27 | 倪玉明 | A kind of railway steel rail polishing grinding wheel |
| RU2630729C1 (en) * | 2016-07-26 | 2017-09-12 | Жанна Владимировна Вараткова | Method of manufacturing the fine-grained abrasive tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001260032A (en) * | 2000-03-17 | 2001-09-25 | Nippon Gureen Kenkyusho:Kk | Vitrified grinding wheel |
| CN201970214U (en) * | 2010-12-10 | 2011-09-14 | 山东玉和磨具制造有限公司 | Ultrathin rotor groove grinding wheel |
| CN102363578A (en) * | 2010-10-25 | 2012-02-29 | 江苏华东砂轮有限公司 | Ceramic binder for steel ball grinding wheel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001260032A (en) * | 2000-03-17 | 2001-09-25 | Nippon Gureen Kenkyusho:Kk | Vitrified grinding wheel |
| CN102363578A (en) * | 2010-10-25 | 2012-02-29 | 江苏华东砂轮有限公司 | Ceramic binder for steel ball grinding wheel |
| CN201970214U (en) * | 2010-12-10 | 2011-09-14 | 山东玉和磨具制造有限公司 | Ultrathin rotor groove grinding wheel |
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