CN109015423A - A kind of grinding wheel and preparation method thereof for lightweighting materials processing - Google Patents
A kind of grinding wheel and preparation method thereof for lightweighting materials processing Download PDFInfo
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- CN109015423A CN109015423A CN201811000889.8A CN201811000889A CN109015423A CN 109015423 A CN109015423 A CN 109015423A CN 201811000889 A CN201811000889 A CN 201811000889A CN 109015423 A CN109015423 A CN 109015423A
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- grinding wheel
- silicon carbide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
- B24D3/285—Reaction products obtained from aldehydes or ketones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The present invention provides a kind of grinding wheels for lightweighting materials processing, and raw material includes silicon carbide abrasive, liquid binder, solid binder, filler, dispersing agent and pigment.The present invention also provides the preparation methods of above-mentioned grinding wheel.Grinding wheel of the invention, it solves in the prior art, incidental viscous the problem of sticking, blocking grinding tool cutting edge and grinding tool is caused to fail when plain wheel grinding lightweighting materials, the ground effect of grinding wheel is good, preparation method of the invention disperses polyethylene wax micro mist in liquid, keep the solute effect of polyethylene wax micro mist more abundant, the characteristic of polyethylene wax micro mist is cut down, improve the binding performance of liquid phenolic resin, reduce the dosage of phenolic resin, the scrappage of product is also reduced, molding is more easier, and high production efficiency while reduces energy consumption.
Description
Technical field
The invention belongs to grinding wheel technologies of preparing, and in particular to a kind of grinding wheel and its preparation side for lightweighting materials processing
Method.
Background technique
Lightweight metal material such as aluminium, copper-based metallic material and lightweight nonmetallic materials, such as the use of carbon fiber
Way constantly is mined out, and aluminium is widely used already in new-energy automobile, high-speed rail motor-car and spacecraft, copper-based conjunction
Gold, magnesium base alloy material are achieved in AI industry and robot building and are widely applied, and the materials such as carbon fiber exist
New Energy Industry, wind power generation and photovoltaic power generation industrial application are extensive.Above-mentioned lightweight new material, plays in modern industry
The effective machining tool for being directed to lightweighting materials is developed in very important effect, significant.
Since lightweighting materials physical property is soft, ground using hard brown corundum abrasive, diamond and cubic boron etc.
Tool is processed, and is easy to happen viscous glutinous, to adhere to blocking grinding tool cutting edge, grinding tool is caused to fail.Lack in the prior art special
Grinding wheel for lightweighting materials processing.
Summary of the invention
In the prior art for solution, incidental viscous glutinous, blocking grinding tool when plain wheel grinding lightweighting materials
Cutting edge and the problem of causing grinding tool to fail, one of the objects of the present invention is to provide a kind of sand for lightweighting materials processing
Wheel.
The second object of the present invention is to provide the preparation method of the above-mentioned grinding wheel for lightweighting materials processing.
To achieve the above object, the invention adopts the following technical scheme:
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
20~80 parts of silicon carbide abrasive,
5~15 parts of liquid binder,
12~25 parts of solid binder,
5~20 parts of filler,
1~5 part of dispersing agent,
0.5~1 part of pigment.
Preferably, the silicon carbide abrasive includes black silicon carbide and green silicon carbide, the black silicon carbide and green silicon carbide
Mass ratio is (1~2): (2~3).
Preferably, the liquid binder is liquid phenolic resin, and the solid binder is powder phenolic resin.
Preferably, the filler is at least one of ice crystal, land plaster, magnesia and calcium carbonate.
Preferably, the dispersing agent is polyethylene wax micro mist.
Preferably, the pigment is at least one of carbon black, dark green, iron oxide red and everbright fast yellow.
A kind of preparation method of the grinding wheel for lightweighting materials processing, comprising the following steps:
(1) each component is weighed according to the ratio, and silicon carbide abrasive, liquid bonding agent and dispersing agent are mixed, mixture A is obtained；
(2) solid-state junction mixture, filler and pigment are mixed, obtains mixture B；
(3) mixture A obtained by step (1) is added in mixture B obtained by step (2) and is mixed, obtain mixture C；
(4) a part of mixture C obtained by step (3) is spread out in mold, is put into glass fiber mesh, spread out mixed into residue
Object C is closed, mould unloading after compacting solidifies after obtaining green body drying；Or
Mixture C obtained by step (3) is sieved with 46 mesh screens, is sieved as fines and coarse fodder, fines and coarse fodder
It first spreads out into fines in a mold, is put into glass fiber mesh, spread out part coarse fodder, place into after glass fiber mesh and spread out again into residue
Part coarse fodder, places cover board, and mould unloading after compacting solidifies after obtaining green body drying.
Preferably, the mixing time > 12min mixed in step (1).
Preferably, the mixing time > 3min mixed in step (2).
Preferably, the mixing time > 10min mixed in step (3).
Preferably, the pressure of step (4) described compacting is 6~10Mpa, and being kept for the time of pressure is 3~10s.
Preferably, the temperature of step (4) described drying is 60~105 DEG C, and the time of drying is 10~12h.
Preferably, step (4) the cured initial temperature is 60 DEG C, and outlet temperature is 185~195 DEG C, cured total
Time is 24~28h.
Preferably, when the material of step (4) booth, mold can be cold mold forming, and cold mould temperature is room temperature.
Preferably, when the material of step (4) booth, mold can form for hot-die, and hot-die molding die temperature is greater than 45 DEG C.
Silicon carbide abrasive in the present invention includes black silicon carbide and green silicon carbide.Pure silicon carbide is colorless and transparent crystal.
Industrial silicon carbide is in pale yellow, green, blue or even black because the type and content of impurities are different, transparency with its purity not
It is same and different.Black silicon carbide is wanted raw material based on petroleum coke and high-quality silica, is formed by resistance furnace pyrolytic semlting with quartz sand,
For its hardness between corundum and diamond, mechanical strength is higher than corundum；Green silicon carbide is based on petroleum coke and high-quality silica
Raw material is wanted, salt is added as additive, is formed by resistance furnace pyrolytic semlting, the crystalline solid purity is high through smelting, hardness
Greatly, for hardness between corundum and diamond, mechanical strength is higher than corundum, and Sic content compares black silicon carbide in green silicon carbide
Height, green silicon carbide are more crisp than black silicon carbide.In order to obtain balance between brittleness and hardness, pressed simultaneously in grinding wheel raw material of the invention
Special ratios are added to black silicon carbide and green silicon carbide.
Polyethylene wax micro mist is the low molecular weight polyethylene homopolymer or copolymer for being widely used in coating.Polyethylene wax is micro-
Effect of the powder for coating mainly improves lustrous surface, and such as Coating Matting, dosage is in model identical with silica content
Enclose it is interior can play effective photoextinction, the size of photoextinction depends on the grain fineness and migration of scattered polyethylene wax
To the ability on film surface layer.
Grinding wheel of the invention, add polyethylene wax micro mist after, produce resistance to blocking, scratch resistance, wear-resistant, antisolvent precipitation and
Anti- thixotropy.
About the method for addition polyethylene wax micro mist, a kind of mode is, by polyethylene wax micro mist and pigment, filler and solid
Bonding agent mixes, as shown in Figure 1, the hybrid mode of polyethylene wax is solid-state mixing.Polyethylene wax micro mist floccule is accumulated close
Degree is light, mixes with pigment, filler and solid binder, is easy to appear material stacking, and dispersion is uneven, polyethylene wax micro mist enrichment
Part, resin-bonded dosage decline, influences local resin binding force.
Another way is method as provided by the present invention, as shown in Fig. 2, polyethylene wax micro mist and silicon carbide are ground
Material and liquid binder combine, and the hybrid mode of polyethylene wax micro mist is liquid mixing, and polyethylene wax is micro- in liquid system
Powder solute effect is more abundant, can preferably cut down the characteristic of special material polyethylene wax micro mist, promotes liquid phenolic aldehyde bonding agent
Performance increases binding force, can also reduce phenolic aldehyde bonding agent dosage.
In the preparation method of grinding wheel of the present invention, it is added and is prepared according to common grinding wheel production technology, the manufacturing scrap of product
Rate is very high, and molding difficulty is big, and production efficiency is low, and ground effect advantage and disadvantage are simultaneously deposited.The preparation method of grinding wheel of the present invention improves
The deficiency of plain wheel production technology, molding are easy, and high production efficiency, manufacturing scrap rate is low, and ground effect is good.
Beneficial effects of the present invention
1, it provided by the present invention for the grinding wheel of lightweighting materials processing, solves in the prior art, plain wheel grinding
Incidental viscous the problem of sticking, blocking grinding tool cutting edge and grinding tool is caused to fail, the grinding effect of grinding wheel when processing lightweighting materials
Fruit is good；
2, in the preparation method of grinding wheel of the present invention, polyethylene wax micro mist is dispersed in liquid, makes polyethylene wax micro mist
Solute effect is more abundant, while having cut down the characteristic of polyethylene wax micro mist, improves the binding performance of liquid phenolic resin, reduces
The dosage of phenolic resin；
3, preparation method of the invention solves in the prior art, and the abrasive surface of molding mass can adhere to coating of wax substance
And loose, the problem of good compaction can not be carried out, it also solves in the prior art, the abrasive grain of green body is easy to fall off, product non-defective unit
The low problem of rate, using preparation method of the invention, molding is easy, and reduces 3~5% product rejection rate, production efficiency mentions
It is high by 50% or more, reduce energy consumption 1~3%.
Detailed description of the invention
Fig. 1 is the preparation method schematic diagram for mixing polyethylene wax micro mist and pigment, filler and solid binder；
Fig. 2 is the preparation method schematic diagram for combining polyethylene wax micro mist with silicon carbide abrasive and liquid binder.
Specific embodiment
The following is specific embodiments of the present invention, and is described with reference to the drawings and further retouches to technical solution of the present invention work
It states, however, the present invention is not limited to these examples.
Embodiment 1
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
30 parts of black silicon carbide grain, 30 parts of green silicon carbide abrasive material, 6.5 parts of liquid binder, 14 parts of solid binder, filler
9 parts, 4 parts of polyethylene wax micro mist, 0.5 part of pigment.
Embodiment 2
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
60 parts of black silicon carbide grain, 20 parts of green silicon carbide abrasive material, 7 parts of liquid binder, 15 parts of solid binder, filler 9
Part, 3 parts of polyethylene wax micro mist, 0.5 part of pigment.
Embodiment 3
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
17.5 parts of black silicon carbide grain, 52.5 parts of green silicon carbide abrasive material, 10 parts of liquid binder, 20 parts of solid binder,
12 parts of filler, 2 parts of polyethylene wax micro mist, 0.8 part of pigment.
Embodiment 4
A kind of preparation method of the grinding wheel for lightweighting materials processing, comprising the following steps:
(1) each component is weighed according to the ratio, and silicon carbide abrasive, liquid bonding agent and dispersing agent are mixed, mixture A is obtained；
(2) solid-state junction mixture, filler and pigment are mixed, obtains mixture B；
(3) mixture A obtained by step (1) is added in mixture B obtained by step (2) and is mixed, obtain mixture C；
(4) a part of mixture C obtained by step (3) is spread out in mold, is put into glass fiber mesh, spread out mixed into residue
Object C is closed, mould unloading after compacting solidifies after obtaining green body drying.
Mixing time > the 12min mixed in step (1), the mixing time > 3min mixed in step (2), in step (3)
Mixing time > 10min of mixing, the pressure of step (4) described compacting are 6~10Mpa, and being kept for the time of pressure is 3~10s,
The temperature of step (4) described drying is 60~105 DEG C, and the time of drying is 10~12h, step (4) the cured starting temperature
Degree is 60 DEG C, and outlet temperature is 185-195 DEG C, and cured total time is 24~28h.
Embodiment 5
A kind of preparation method of the grinding wheel for lightweighting materials processing, comprising the following steps:
(1) each component is weighed according to the ratio, and silicon carbide abrasive, liquid bonding agent and dispersing agent are mixed, mixture A is obtained；
(2) solid-state junction mixture, filler and pigment are mixed, obtains mixture B；
(3) mixture A obtained by step (1) is added in mixture B obtained by step (2) and is mixed, obtain mixture C；
(4) mixture C obtained by step (3) is sieved, obtains fines and coarse fodder, first spreads out into fines in a mold, be put into glass
Glass fiber mesh cloth spreads out part coarse fodder, places into after glass fiber mesh and is spread out again into remainder coarse fodder, cover board is placed, after compacting
Mould unloading solidifies after obtaining green body drying.
Mixing time > the 12min mixed in step (1), the mixing time > 3min mixed in step (2), in step (3)
Mixing time > 10min of mixing, the pressure of step (4) described compacting are 6~10Mpa, and being kept for the time of pressure is 3~10s,
The temperature of step (4) described drying is 60~105 DEG C, and the time of drying is 10~12h, step (4) the cured starting temperature
Degree is 60 DEG C, and outlet temperature is 185-195 DEG C, and cured total time is 24~28h.
Comparative example 1
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
60 parts of black silicon carbide grain, 6.5 parts of liquid binder, 14 parts of solid binder, 9 parts of filler, polyethylene wax micro mist 4
Part, 0.5 part of pigment.
Comparative example 2
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
60 parts of green silicon carbide abrasive material, 7 parts of liquid binder, 15 parts of solid binder, 9 parts of filler, polyethylene wax micro mist 3
Part, 0.5 part of pigment.
Comparative example 3
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
17.5 parts of black silicon carbide grain, 52.5 parts of green silicon carbide abrasive material, 10 parts of liquid binder, 20 parts of solid binder,
12 parts of filler, 0.8 part of pigment.
Comparative example 4
A kind of grinding wheel for lightweighting materials processing, the raw material including following parts by weight meter:
17.5 parts of black silicon carbide grain, 52.5 parts of green silicon carbide abrasive material, 10 parts of liquid binder, 20 parts of solid binder,
12 parts of filler, 0.5 part of polyethylene wax micro mist, 0.8 part of pigment.
Detect example 1
The method provided using the formula and embodiment 4 of embodiment 1, after mixture C is made in step (3), screening off the pot
Mixture, single box weight 15kg.With 125 diameter dies, half material is first spread out in a mold, places into glass screen cloth, then spread out into another
Half expects, after the completion of the material of booth, puts cover board, and mold is suppressed 3s with molding press at 50 DEG C, 10Mpa, green body is made, by the base of completion
Body is installed with specific backing plate and is put into kiln, and solidification temperature is warming up to 185~195 DEG C from 60 DEG C paragraph by paragraph, and solidification total time is 25 small
When, heating and soaking time are as shown in table 1, prepare product A.Phenolic resin reduction amount is recorded, is glued between abrasive material after mixing is off the pot
Property, compare molding pressing process, green body abrasive grain degree of adhesion.
10 sections of solidification details of table
Detect example 2
The method provided using the formula and embodiment 5 of embodiment 2, after mixture C is made in step (3), screening off the pot
Mixture, single box weight 10kg.With 125 diameter dies, fines is first spread out in a mold, puts a glass fiber mesh, spreads out half coarse fodder,
Glass screen cloth is placed into, then is spread out and is put cover board after the completion of booth is expected into the other half coarse fodder, mold is used into molding press at 45 DEG C, 8Mpa
4s is suppressed, green body is made；The green body of completion is installed with specific backing plate and is put into kiln, solidification temperature is warming up to paragraph by paragraph from 60 DEG C
185~195 DEG C, heating and soaking time are as shown in table 1, and solidification total time is 26 hours, prepare product B.Record phenolic resin
Reduction amount, viscosity between abrasive material, compares molding pressing process, green body abrasive grain degree of adhesion after mixing is off the pot.
Detect example 3
The method provided using the formula and embodiment 4 of embodiment 3, screening off the pot is mixed after mixture C is made in step (3)
Close object, single box weight 10kg.With 125 diameter dies, it is put into a glass screen cloth in a mold, spreads out into whole material, after the completion of booth is expected
Another glass fiber mesh is put, cover board is put, mold is suppressed into 3s with molding press at 45 DEG C, 10Mpa, green body is made；It will complete
Green body installed with specific backing plate and be put into kiln, solidification temperature is warming up to 185~195 DEG C from 60 DEG C paragraph by paragraph, when heating and heat preservation
Between as shown in table 1, solidification total time be 28 hours, prepare products C.Record phenolic resin reduction amount, mixing it is off the pot after abrasive material it
Between viscosity, compare molding pressing process, green body abrasive grain degree of adhesion.
Detect example 4
The method that the formula and embodiment 4 provided using comparative example 1~4 is provided, after mixture C is made in step (3),
Screening mixture off the pot, single box weight 15kg.With 125 diameter dies, half material is first spread out in a mold, places into glass screen cloth, then
It spreads out and puts cover board after the completion of booth is expected into the other half material, mold is suppressed into 3s with molding press at 50 DEG C, 10Mpa, green body is made, it will
The green body of completion is installed with specific backing plate and is put into kiln, and solidification temperature is warming up to 185~195 DEG C paragraph by paragraph from 60 DEG C, solidification process
It is ten sections, solidification total time is 25 hours, prepares and product D, E, F and G is made.Phenolic resin reduction amount is recorded, after mixing is off the pot
It is sticky between abrasive material, compare molding pressing process, the bonding of green body abrasive grain.
The grinding wheel that testing result discovery is prepared using method of the invention changes the addition of special material polyethylene wax micro mist
Mode cuts down special material polyethylene wax micro mist characteristic, promotes liquid phenolic aldehyde bonding agent performance, increases binding force, can be realized
Reduce phenolic aldehyde bonding agent dosage.Increase abrasive surface viscosity simultaneously, molding mass abrasive material toughness, green body degree of adhesion is well intact
Side.Preparation method provided by the invention solves the obvious deficiency of existing production technology, is reduced to manufacturing scrap rate from 8%
2%.
It the use of workbench is that Germany's Walter400combi type cylindricalo grinding adds by the grinding wheel of seven kinds of same sizes of A~G
Work center, maximum speed 3500rpm, cooling medium are water, and grinding workpiece is aluminium bar, and barred body is having a size of 160*400, unilateral grinding
Measure 3mm.Grinding wheel under steady operation, is ground 0.5h by the variation of machining center lateral coordinates and calculates gold under a certain parameter
The consumption volume VW of hard rock grinding wheel, by calculate processing aluminium bar quantity, calculate the volume VS of the aluminium ground away, with VS divided by
VW calculates grinding wheel under the technological parameter relative to the wear resistance ratio G of aluminium, product F (formula of comparative example 3) non-addition polymerization ethylene waxes
Micro mist, product failure.
Claims (10)
1. a kind of grinding wheel for lightweighting materials processing, which is characterized in that the raw material including following parts by weight meter:
20~80 parts of silicon carbide abrasive,
5~15 parts of liquid binder,
12~25 parts of solid binder,
5~20 parts of filler,
1~5 part of dispersing agent,
0.5~1 part of pigment.
2. the grinding wheel according to claim 1 for lightweighting materials processing, which is characterized in that the silicon carbide abrasive packet
Include black silicon carbide and green silicon carbide, the mass ratio of the black silicon carbide and green silicon carbide is (1~2): (2~3).
3. the grinding wheel according to claim 1 for lightweighting materials processing, which is characterized in that the liquid binder is
Liquid phenolic resin, the solid binder are powder phenolic resin.
4. the grinding wheel according to claim 1 for lightweighting materials processing, which is characterized in that the filler is ice crystal
At least one of stone, land plaster, magnesia and calcium carbonate.
5. the grinding wheel according to claim 1 for lightweighting materials processing, which is characterized in that the dispersing agent is poly- second
Alkene wax micro mist.
6. it is according to claim 1 for lightweighting materials processing grinding wheel, which is characterized in that the pigment be carbon black,
At least one of dark green, iron oxide red and everbright fast yellow.
7. a kind of preparation method of the grinding wheel as described in any one of claim 1~6, which comprises the following steps:
(1) each component is weighed according to the ratio, and silicon carbide abrasive, liquid bonding agent and dispersing agent are mixed, mixture A is obtained；
(2) solid binder, filler and pigment are mixed, obtains mixture B；
(3) mixture A obtained by step (1) is added in mixture B obtained by step (2) and is mixed, obtain mixture C；
(4) a part of mixture C obtained by step (3) is spread out in mold, is put into glass fiber mesh, spreads out into remaining mixture
C, mould unloading after compacting solidify after obtaining green body drying；Or
By the screening of mixture C obtained by step (3), fines and coarse fodder are obtained, first spreads out into fines in a mold, is put into glass fiber mesh
Cloth spreads out part coarse fodder, places into after glass fiber mesh and is spread out again into remainder coarse fodder, place cover board, mould unloading after compacting obtains
Solidify after green body drying.
8. the preparation method of grinding wheel according to claim 7, which is characterized in that the pressure of step (4) described compacting be 6~
10Mpa, being kept for the time of pressure is 3~10s.
9. the preparation method of grinding wheel according to claim 7, which is characterized in that the temperature of step (4) described drying be 60~
105 DEG C, the time of drying is 10~12h.
10. the preparation method of grinding wheel according to claim 7, which is characterized in that step (4) the cured initial temperature is
60 DEG C, outlet temperature is 185~195 DEG C, and cured total time is 24~28h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109909896A (en) * | 2019-03-14 | 2019-06-21 | 浙江亚孙砂轮有限公司 | Grind cast iron postscript shape resin wheel and its manufacturing process |
| CN110193841A (en) * | 2019-05-30 | 2019-09-03 | 武汉百舸自动化工程有限责任公司 | A kind of lightweight manipulator |
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| CN110193841A (en) * | 2019-05-30 | 2019-09-03 | 武汉百舸自动化工程有限责任公司 | A kind of lightweight manipulator |
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