CN103056785A - 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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- CN103056785A CN103056785A CN201210558024XA CN201210558024A CN103056785A CN 103056785 A CN103056785 A CN 103056785A CN 201210558024X A CN201210558024X A CN 201210558024XA CN 201210558024 A CN201210558024 A CN 201210558024A CN 103056785 A CN103056785 A CN 103056785A
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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 effect of HTHP, abrasive dust sticks on the plain wheel easily, fills up the space between abrasive particle, and surface of the work produces the phenomenons such as burn, annealing easily.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 good physical and mechanical properties: proportion is little, specific strength is high, high temperature resistant, corrosion-resistant, nonmagnetic, elastic modelling quantity is high.Because it has a series of premium properties and is widely used at industrial circles such as Aeronautics and Astronautics, petrochemical industry, automobile, medical treatment.But some physical and mechanical properties of wherein certain have also been brought difficulty to grinding, and the titanium alloy grinding temperature is high, and grinding force is large, adopt the plain wheel serious wear, easily bonding.
Vitrified abrasive is because bond and the compatibility of abrasive material and the emery wheel that self-sharpening is better than other bonds, therefore be widely used in the high-end grindings such as tool grinder and moulding mill, particularly its unique wearability and sharpness make it be able to a large amount of application in metal removal and nonmetal grinding field, but because the fault of construction of himself, the linear velocity of vitrified abrasive safe handling generally arrives 60m/s at 35m/s, and electric tool and pneumatic tools Generally Recognized as safe use linear velocity 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 the ordinary resin wheel grinding, grinding efficiency is low, and abrasion are high, time and effort consuming, and workman's labour intensity is high, simultaneously surrounding environment is easily polluted.The present invention adopts special technique and material, produces employed vitrified abrasive when using electric tool and pneumatic tools to stainless steel and titanium alloy material grinding.
Summary of the invention
The objective of the invention is for the prior art defective preparation method of employed vitrified abrasive when a kind of usefulness electric tool and pneumatic tools are provided stainless steel and titanium alloy material grinding.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
The preparation method of the vitrified abrasive of a kind 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%, bond 15～40%; Consisting of of described bond: clay powder 15～35%, feldspar powder 15～35%, boron glass powder 35～60%;
(2) mixing of raw material: a. with the described abrasive material of step (1) with the even wetting mixture A that obtains of 12%wt sodium silicate solution; B. under stirring, in Lancaster mixer, add mixture A; C. under stirring, in mixture A, add the described bond of step (1), stop stirring behind stirring 10～45min and obtain mixture B; D. mixture B is crossed the screen cloth between 24#～46#;
(3) formative stage: mixture B dress mould, moulding, the demoulding with sieving, obtain the idiosome emery wheel, isostatic pressing process is adopted in described moulding, and pressure is 20～22MPa;
(4) drying stage: the idiosome emery wheel is carried out drying, described drying condition is: be heated to 90～110 ℃ from room temperature through 2.5～4h, then temperature is heated to 140～150 ℃ of needs 3～4.5h, relative humidity is controlled at 10～50% in the whole dry run;
(5) the roasting stage: the idiosome sand that step (4) is made carries out roasting, described roasting condition is: be heated to 280～320 ℃ from room temperature through 2.5～4h, then temperature is heated to 500～560 ℃ of needs 3～4h, continuation is heated to 800～1000 ℃ of needs 9～12h with temperature, then naturally cool to room temperature, whole roasting process under normal pressure, calcination atmosphere is in the weakly reducing atmosphere and carries out;
(6) Assembly Phase: the idiosome emery wheel that step (5) is made carries out the fine finishining processing, then the idiosome emery wheel is fixed on the metallic matrix, obtains product.
The described abrasive material of step (1) be among fused alumina zirconia, SG or the CBN any.
The described abrasive material of step (1) is crossed 24#～60# screen cloth and is made.
The described weakly reducing atmosphere of step (5) is that 2:1 is to 4:1 by the air inflow volume ratio of regulating methane and air.
The described metallic matrix of step (6) is stainless steel or magnadure.
The described fixing means of step (6) passes through epoxy bond.
The invention has the beneficial effects as follows:
1. the vitrified abrasive grinding efficiency of producing with the present invention is 10 to 100 times of resin wheel, and abrasion are 0.01 of resin wheel only, have reduced workman's labour intensity, have improved working environment.
2. the vitrified abrasive of producing with the present invention, speed of gyration is stabilized in 128～144m/s, can use safely under 80 m/s linear velocities.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but do not limit content of the present invention.
Embodiment 1
The preparation method of the vitrified abrasive of a kind 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%, bond 30%; Consisting of of bond: clay powder 30%, feldspar powder 30%, boron glass powder 40%;
(2) mixing of raw material: a. with the described abrasive material of step (1) with the even wetting mixture A that obtains of 12%wt sodium silicate solution; B. under stirring, in Lancaster mixer, add mixture A; C. under stirring, in mixture A, add the described bond of step (1), stop stirring behind the stirring 30min and obtain mixture B; D. mixture B is crossed the 24# screen cloth;
(3) formative stage: mixture B dress mould, moulding, the demoulding with sieving, obtain the idiosome emery wheel, isostatic pressing process is adopted in moulding, and pressure is 20MPa;
(4) drying stage: the idiosome emery wheel placed carry out drying in the baking oven, described drying condition is: be heated to 100 ℃ from room temperature through 3h, then temperature be heated to 145 ℃ of needs 3h, relative humidity is controlled at 30% in the whole dry run;
(5) the roasting stage: the idiosome emery wheel that step (4) is made places Muffle furnace, described roasting condition is: be heated to 300 ℃ from room temperature through 3h, then temperature is heated to 550 ℃ of needs 3h, continuation is heated to 1000 ℃ of needs 10h with temperature, then naturally cool to room temperature, whole roasting process atmosphere under normal pressure, in the Muffle furnace is in the weakly reducing atmosphere carries out, and weakly reducing atmosphere is that the air inflow volume ratio by regulating methane and air is the 3:1 acquisition;
(6) Assembly Phase: the idiosome emery wheel that step (5) is made carries out fine finishining to be processed, then with the idiosome emery wheel by epoxy bond on the stainless steel metal matrix, obtain product.
Embodiment 2
Present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, and fused alumina zirconia abrasive material 60%, bond 40%; Consisting of of bond: clay powder 35%, feldspar powder 20%, boron glass powder 45%.
Embodiment 3
Present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, and fused alumina zirconia abrasive material 85%, bond 15%; Consisting of of bond: clay powder 25%, feldspar powder 15%, boron glass powder 60%.
Embodiment 4
Present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, and fused alumina zirconia abrasive material 75%, bond 25%; Consisting of of bond: clay powder 25%, feldspar powder 35%, boron glass powder 40%.
Embodiment 5
Present embodiment and embodiment 1 same section no longer repeat, and difference is the composition of step (1) Raw: by percentage to the quality, and fused alumina zirconia abrasive material 65%, bond 35%; Consisting of of bond: clay powder 15%, feldspar powder 35%, boron glass powder 50%.
Embodiment 6
Present embodiment and embodiment 1 same section no longer repeat, and difference is that the fused alumina zirconia abrasive material described in the composition of step (1) Raw substitutes with the SG abrasive material.
Embodiment 7
Present embodiment and embodiment 1 same section no longer repeat, and difference is that the fused alumina zirconia abrasive material described in the composition of step (1) Raw substitutes with the SG abrasive material.
Embodiment 8
Present embodiment and embodiment 1 same section no longer repeat, and difference is that the fused alumina zirconia abrasive material described in the composition of step (1) Raw substitutes with the CBN abrasive material.
Embodiment 9
Present embodiment and embodiment 1 same section no longer repeat, and difference is in the step (2) mixture B to be crossed the 46# screen cloth.
Embodiment 10
Present embodiment and embodiment 1 same section no longer repeat, difference be in the step (6) with the idiosome emery wheel by epoxy bond on the magnadure matrix.
Claims (6)
1. the preparation method of the vitrified abrasive of a 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%, bond 15～40%; Consisting of of described bond: clay powder 15～35%, feldspar powder 15～35%, boron glass powder 35～60%;
(2) mixing of raw material: a. with the described abrasive material of step (1) with the even wetting mixture A that obtains of 12%wt sodium silicate solution; B. under stirring, in Lancaster mixer, add mixture A; C. under stirring, in mixture A, add the described bond of step (1), stop stirring behind stirring 10～45min and obtain mixture B; D. mixture B is crossed the screen cloth between 24#～46#;
(3) formative stage: mixture B dress mould, moulding, the demoulding with sieving, obtain the idiosome emery wheel, isostatic pressing process is adopted in described moulding, and pressure is 20～22MPa;
(4) drying stage: the idiosome emery wheel is carried out drying, described drying condition is: be heated to 90～110 ℃ from room temperature through 2.5～4h, then temperature is heated to 140～150 ℃ of needs 3～4.5h, relative humidity is controlled at 10～50% in the whole dry run;
(5) the roasting stage: the idiosome sand that step (4) is made carries out roasting, described roasting condition is: be heated to 280～320 ℃ from room temperature through 2.5～4h, then temperature is heated to 500～560 ℃ of needs 3～4h, continuation is heated to 800～1000 ℃ of needs 9～12h with temperature, then naturally cool to room temperature, whole roasting process under normal pressure, calcination atmosphere is in the weakly reducing atmosphere and carries out;
(6) Assembly Phase: the idiosome emery wheel that step (5) is made carries out the fine finishining processing, then the idiosome emery wheel is fixed on the metallic matrix, obtains product.
2. the preparation method of described vitrified abrasive according to claim 1 is characterized in that: the described abrasive material of step (1) be among fused alumina zirconia, SG or the CBN any.
3. the preparation method of described vitrified abrasive according to claim 1, it is characterized in that: the described abrasive material of step (1) is crossed 24#～60# screen cloth and is made.
4. the preparation method of described vitrified abrasive according to claim 1, it is characterized in that: the described weakly reducing atmosphere of step (5) is that 2:1 is to 4:1 by the air inflow volume ratio of regulating methane and air.
5. the preparation method of described vitrified abrasive according to claim 1, it is characterized in that: the described metallic matrix of step (6) is stainless steel or magnadure.
6. the preparation method of described vitrified abrasive according to claim 1, it is characterized in that: the described fixing means of step (6) 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105856082A (en) * | 2016-06-08 | 2016-08-17 | 倪玉明 | Railway rail 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 |
-
2012
- 2012-12-20 CN CN201210558024.XA patent/CN103056785B/en active Active
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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105856082A (en) * | 2016-06-08 | 2016-08-17 | 倪玉明 | Railway rail grinding wheel |
| RU2630729C1 (en) * | 2016-07-26 | 2017-09-12 | Жанна Владимировна Вараткова | Method of manufacturing the fine-grained abrasive tool |
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| CN103056785B (en) | 2015-05-06 |
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