CN109290964B - High-efficiency rail polishing grinding wheel and manufacturing method thereof - Google Patents
High-efficiency rail polishing grinding wheel and manufacturing method thereof Download PDFInfo
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- CN109290964B CN109290964B CN201811308415.XA CN201811308415A CN109290964B CN 109290964 B CN109290964 B CN 109290964B CN 201811308415 A CN201811308415 A CN 201811308415A CN 109290964 B CN109290964 B CN 109290964B
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- 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
- B24D18/0054—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impressing abrasive powder in a matrix
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The invention discloses a high-efficiency railing polishing grinding wheel which comprises a large grinding wheel and a small grinding wheel, wherein square holes are formed in the centers of the large grinding wheel and the small grinding wheel, the large grinding wheel and the small grinding wheel respectively comprise a plastic base layer, a first resin layer, a second resin layer and a grinding material layer, anti-skid grains are formed in the surface of the plastic base layer, the bottom of the plastic base layer is fixedly connected with the top surface of the first resin layer, the top of the plastic base layer is fixedly connected with the bottom of the second resin layer, and the outer surfaces of the first resin layer and the second resin layer are fixedly connected with the inner surface of the grinding material layer. This high efficiency railing emery wheel of polishing is through setting up except that the diameter equal unanimous big emery wheel and little emery wheel to crisscross combination uses when using, can make and form a gap between two big emery wheels and the middle little emery wheels, can entangle shaft-like things such as railing, and the railing is polished simultaneously to the multi-angle, has improved the efficiency of polishing greatly, and convenient to use.
Description
Technical Field
The invention relates to the technical field of grinding wheels, in particular to a high-efficiency rail grinding wheel and a manufacturing method thereof.
Background
The grinding wheel is also called a consolidation grinding tool, and is a consolidation grinding tool which is formed by consolidating common grinding materials into a certain shape (mostly circular, with a through hole in the center) by a binding agent and has certain strength. It is generally composed of abrasive, bond and air holes, which are often referred to as the three elements of a bonded abrasive tool. According to different classes of binders, ceramic (binder) grinding wheels, resin (binder) grinding wheels, and rubber (binder) grinding wheels are common. The grinding wheel is the one with the largest use amount and the widest use range in the grinding tool, rotates at high speed when in use, and can perform coarse grinding, semi-fine grinding, slotting, cutting and the like on the excircle, the inner circle, the plane, various molded surfaces and the like of a metal or nonmetal workpiece. Resin grinding wheels, which are grinding wheels made of resin, such as phenol formaldehyde, epoxy, polyurethane, polyvinyl alcohol, and the like; the resin grinding wheel is high in strength, a reinforced fiber net and reinforcing steel bars such as a cutting blade and a grinding disc can be added into the grinding wheel, most of the resin grinding wheels are not waterproof and cannot be ground by grinding fluid, certainly, some resin grinding wheels needing grinding fluid are also needed to be added, such as epoxy, the grinding smoothness of the resin grinding wheels is good, workpieces are not easy to burn, the resin grinding wheels are applied to the cutting blade, the double end faces, the heavy-load grinding wheels, the polishing wheel and the like, and the strength of the resin bonding agent grinding wheel is lower than that of a metal bonding agent and a ceramic bonding agent.
Current grinding wheel polisher when thin rod-like objects such as railing, need polish the round, because of the contact surface of polishing is less, it is comparatively consuming time to rotate the round and polish, and work efficiency is low, influences the progress of engineering or production, and some emery wheels that have now, for integral pressing, more to costing of material.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-efficiency rail polishing grinding wheel and a manufacturing method thereof, and solves the problems that the conventional grinding wheel polisher is time-consuming in polishing a circle of thin rod-shaped objects such as a rail due to a small polishing contact surface, the working efficiency is low, and the conventional grinding wheels are integrally pressed and consume more materials.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a high efficiency railing emery wheel of polishing, includes big emery wheel and little emery wheel, the square hole has all been seted up at the center of big emery wheel and little emery wheel, big emery wheel and little emery wheel all include plastics basic unit, first resin layer, second resin layer and abrasive material layer, anti-skidding line has been seted up on the surface of plastics basic unit, the bottom of plastics basic unit is connected with the top fixed surface on first resin layer, the top of plastics basic unit and the bottom fixed connection on second resin layer, the surface on first resin layer and second resin layer all is connected with the internal surface fixed connection on abrasive material layer.
The invention also discloses a manufacturing method of the high-efficiency rail polishing grinding wheel, which specifically comprises the following steps:
step one, preparing materials: preparing sufficient materials such as phenolic resin, epoxy resin, silicon carbide particles, calcium carbonate powder, a binding agent and the like, customizing a grinding wheel mould of a large grinding wheel and a small grinding wheel, a mould with quantitative first resin layer and second resin layer, an injection mould of a plastic base layer and a square pipe matched with the square hole.
And secondly, placing the square pipe in an injection mold, injecting plastic into the injection mold for molding, scraping uniform anti-skid lines on the surface of the plastic base layer on the molded plastic base layer by using a scraper with equidistant teeth, marking the middle of the outer circular surface of the plastic base layer, and keeping for later use.
And step three, respectively putting the calcium carbonate powder, the phenolic resin and the epoxy resin into a mixer for mixing and stirring, keeping heating in the stirring process, adding the binding agent after stirring for 1 hour, mixing and stirring again for 1 hour, taking out the two mixed materials, standing for 10 minutes, naturally cooling the mixed materials to be mixed viscous, wherein the mixed material of the calcium carbonate powder and the phenolic resin is the raw material of the first resin layer, and the mixed material of the calcium carbonate powder and the epoxy resin is the raw material of the second resin layer.
And step four, placing the square pipe in the middle of a quantitative mould, pouring a small amount of raw materials of the second resin layer into the quantitative mould to be paved at the bottom, sleeving the plastic base layer on the square pipe, immersing the lower half part of the plastic base layer into the second resin layer, appropriately supplementing the second resin layer according to the liquid level to enable the liquid level to reach the position of a scale mark, and standing for 3 hours to enable the second resin layer to be basically solidified.
And step five, when the second resin layer is not completely solidified, blowing hot air on the surface of the top of the second resin layer by using an air heater for heating to melt the surface of the top of the second resin layer, pouring the viscous first resin layer raw material into a quantitative mold to immerse the plastic base layer and reach the specified position of the quantitative mold, standing for 3 hours to basically solidify the second resin layer, and at the moment, taking out the first resin layer, the second resin layer, the plastic base layer and the square pipe integrally.
Heating the silicon carbide to high temperature by using a heating pot, heating the grinding wheel mould to a hotter state, firstly placing the square pipe in the middle of the grinding wheel mould, then uniformly paving the high-temperature silicon carbide taking part at the bottom of the grinding wheel mould, simultaneously blowing high-temperature hot air on the surfaces of the first resin layer and the second resin layer by using an air heater to melt the surfaces of the first resin layer and the second resin layer, then integrally placing the first resin layer, the second resin layer, the plastic base layer and the square pipe into a grinding wheel grinding tool, and then quickly uniformly pouring the rest high-temperature silicon carbide into the grinding wheel grinding tool and flattening the surfaces.
And seventhly, after the material is placed, sleeving a square pipe with a pressing plate matched with the grinding wheel in shape, uniformly pressing down with a press machine to enable the first resin layer and the second resin layer molten on the surface to penetrate into the silicon carbide, taking out the mold, the grinding wheel and the like integrally, cooling and solidifying at room temperature or low temperature, taking out the mold, cooling and solidifying to obtain a finished grinding wheel, and performing sampling inspection before warehousing.
Preferably, the ratio of the phenolic resin to the epoxy resin to the calcium carbonate powder to the binder is 2:1: 1.
Preferably, the overall thickness of the first resin layer and the second resin layer is consistent.
Preferably, the square tube is a metal tube, is high temperature resistant, and is not easy to deform when heated.
Preferably, the initial thickness of the first resin layer and the second resin layer is consistent with the thickness of the silicon carbide particle layer [ the abrasive layer and the second resin layer can fully infiltrate into the abrasive layer and the small grinding wheel, and the processing mode is consistent except the diameter.
(III) advantageous effects
The invention provides a high-efficiency rail polishing grinding wheel and a manufacturing method thereof. Compared with the prior art, the method has the following beneficial effects:
(1) the utility model discloses a high efficiency railing emery wheel of polishing and preparation method, through all having seted up the square hole at the center of big emery wheel and little emery wheel, big emery wheel and little emery wheel all include the plastics basic unit, first resin layer, second resin layer and abrasive material layer, big emery wheel is unanimous with little emery wheel thickness, it is unanimous except that the diameter mode of processing, through setting up big emery wheel and the little emery wheel of unanimous except that the diameter, and crisscross combination uses when using, can make and form a gap between two big emery wheels and the middle little emery wheel, can entangle shaft-like things such as railing, the railing is polished simultaneously to the multi-angle, the efficiency of polishing has greatly been improved, and convenient to use.
(2) The high-efficiency rail polishing grinding wheel and the manufacturing method thereof are characterized in that the square tube is placed in an injection mold, plastic is injected into the injection mold for molding, then, on the formed plastic base layer, a scraper with teeth at equal intervals is used for scraping uniform anti-skid lines on the surface of the plastic base layer, marking the middle of the excircle surface of the plastic base layer, reserving for later use, fixedly connecting the bottom of the plastic base layer with the top surface of the first resin layer, fixedly connecting the top of the plastic base layer with the bottom of the second resin layer, by arranging the plastic base layer in the grinding wheel, not only the raw material cost is low and the processing is easy, but also the strength of the grinding wheel can be improved, the use of grinding materials and resin can be reduced, and the strength of the strong wheel can be improved, and set up anti-skidding line on plastics basic unit surface, can avoid first resin layer and second resin layer to drop, the effectual fastness of guaranteeing the emery wheel.
(3) The high-efficiency railing grinding wheel and the manufacturing method thereof are characterized in that calcium carbonate powder, phenolic resin and epoxy resin are respectively put into a mixer to be mixed and stirred, the stirring process is kept to be heated, a binding agent is added after the calcium carbonate powder and the epoxy resin are stirred for 1 hour, the mixture is mixed and stirred for 1 hour again, then the two mixed materials are taken out and are kept stand for 10 minutes, the mixture is naturally cooled to be mixed viscous, the calcium carbonate powder and phenolic resin mixture is used as a raw material of a first resin layer, the calcium carbonate powder and epoxy resin mixture is used as a raw material of a second resin layer, phenolic resin and epoxy resin synthetic resin layers are respectively used for fixing grinding material layers on two sides of the grinding wheel, the grinding materials made of the same material reach different shedding difficulty degrees by utilizing the different strengths of the phenolic resin and the epoxy resin, even if the two sides of the grinding wheel present different hardness degrees, better grinding effect can, the grinding efficiency can also be improved.
Drawings
FIG. 1 is a schematic view of the structure of a large grinding wheel and a small grinding wheel according to the present invention;
FIG. 2 is a schematic structural view of the anti-slip pattern of the present invention;
FIG. 3 is a cross-sectional view of a large grinding wheel construction of the present invention.
In the figure, 1-big grinding wheel, 2-small grinding wheel, 3-square hole, 4-plastic base layer, 5-first resin layer, 6-second resin layer, 7-grinding material layer and 8-anti-skid grain.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an embodiment of the present invention provides a technical solution: a high-efficiency rail grinding wheel comprises a large grinding wheel 1 and a small grinding wheel 2, square holes 3 are formed in the centers of the large grinding wheel 1 and the small grinding wheel 2, the large grinding wheel 1 and the small grinding wheel 2 respectively comprise a plastic base layer 4, a first resin layer 5, a second resin layer 6 and a grinding material layer 7, anti-skid grains 8 are formed in the surface of the plastic base layer 4, the bottom of the plastic base layer 4 is fixedly connected with the surface of the top of the first resin layer 5, the top of the plastic base layer 4 is fixedly connected with the bottom of the second resin layer 6, by arranging the plastic base layer 4 in the grinding wheel, not only the raw material cost is low and the processing is easy, but also the strength of the grinding wheel can be improved, the use of grinding materials and resin can be reduced, and the strength of the strong wheel can be improved, and set up anti-skidding line 8 on 4 surfaces of plastic substrate, can avoid first resin layer 5 and second resin layer 6 to drop, the effectual fastness of guaranteeing the emery wheel, the surface of first resin layer 5 and second resin layer 6 all with the internal surface fixed connection on abrasive material layer 7.
The invention also discloses a manufacturing method of the high-efficiency rail polishing grinding wheel, which specifically comprises the following steps:
step one, preparing materials: prepare materials such as sufficient phenolic resin, epoxy, carborundum grain, calcium carbonate powder and binder, customize the emery wheel mould of big emery wheel 1 and little emery wheel 2, the mould of first resin layer 5 and 6 ration on second resin layer, and the injection mold of plastic substrate 4 to and with the square pipe of 3 adaptations of square hole, square pipe is the tubular metal resonator, high temperature resistant, and the non-deformable that is heated.
And step two, placing the square pipe in an injection mold, injecting plastic into the injection mold for molding, scraping uniform anti-skid grains 8 on the surface of the plastic base layer 4 by using a scraper with equidistant teeth on the molded plastic base layer 4, marking the middle of the outer circular surface of the plastic base layer 4, and keeping for later use.
Step three, respectively putting calcium carbonate powder and phenolic resin and epoxy resin into a mixer for mixing and stirring, keeping heating in the stirring process, adding a binding agent after stirring for 1 hour, mixing and stirring again for 1 hour, then taking out the two mixed materials, standing for 10 minutes, naturally cooling the mixed materials to be mixed viscous, wherein the calcium carbonate powder and phenolic resin mixed material is used as a raw material of a first resin layer 5, the calcium carbonate powder and epoxy resin mixed material is used as a raw material of a second resin layer 6, phenolic resin and epoxy resin synthetic resin layers are respectively used for fixing abrasive material layers 7 on two sides of a grinding wheel, and the abrasive materials made of the same material reach different shedding difficulty degrees by utilizing the different strengths of the phenolic resin and the epoxy resin, so that even if the two sides of the grinding wheel present different hardness degrees, better grinding effect can be achieved by matching different surfaces, and the grinding efficiency can also be improved, the phenolic resin and the epoxy resin are common materials for resin grinding wheels, but the strength of the cured epoxy resin is higher than that of the phenolic resin, and the ratio of the phenolic resin to the epoxy resin to the calcium carbonate powder to the binding agent is 2:1: 1.
And step four, placing the square pipe in the middle of a quantitative mould, pouring a small amount of raw materials of the second resin layer 6 into the quantitative mould to be paved, sleeving the plastic base layer 4 on the square pipe, immersing the lower half part of the plastic base layer 4 into the second resin layer 6, appropriately supplementing the second resin layer 6 according to the liquid level to enable the liquid level to reach the position of a scale mark, and standing for 3 hours to enable the second resin layer 6 to be basically solidified.
And step five, when the second resin layer 6 is not completely solidified, blowing hot air on the surface of the top of the second resin layer by using an air heater for heating to melt the surface of the top of the second resin layer, pouring the raw material of the first resin layer 5 in a viscous state into a quantitative mold, immersing the plastic base layer 4 to reach the designated position of the quantitative mold, standing for 3 hours to basically solidify the second resin layer 6, taking out the first resin layer 5, the second resin layer 6, the plastic base layer 4 and the square tube integrally, and keeping the whole thicknesses of the first resin layer 5 and the second resin layer 6 consistent.
Heating the silicon carbide to high temperature by using a heating pot, heating the grinding wheel mould to a hotter state, firstly placing the square pipe in the middle of the grinding wheel mould, then uniformly paving the high-temperature silicon carbide taking part at the bottom of the grinding wheel mould, simultaneously blowing high-temperature hot air on the surfaces of the first resin layer 5 and the second resin layer 6 by using a hot air blower to melt the surfaces of the first resin layer 5 and the second resin layer 6, putting the first resin layer 5, the second resin layer 6, the plastic base layer 4 and the square pipe into the grinding wheel mould integrally, then quickly pouring the rest high-temperature silicon carbide into the grinding wheel mould uniformly, and flattening the surfaces, wherein the thickness ratio of the initial thickness of the first resin layer 5 to the initial thickness of the second resin layer 6 to the abrasive material of the silicon carbide particle layer [ 7 ] is 1: 1.5.
Seventhly, after the material is placed, sleeving a square pipe with a pressing plate matched with the shape of the grinding wheel, uniformly pressing down by using a press machine to enable the first resin layer 5 and the second resin layer 6 fused on the surfaces to penetrate into the silicon carbide, taking out the die, the grinding wheel and the like integrally, cooling and solidifying at room temperature or low temperature, finally taking out the die and the grinding wheel to form a finished grinding wheel, sampling and checking before warehousing, wherein the pressure of the press machine is 8MPa, the first resin layer 5 and the second resin layer 6 can be fully penetrated into the abrasive layer 7), the large grinding wheel 1 and the small grinding wheel 2 are consistent in thickness and consistent in processing mode except diameter, and by arranging the large grinding wheel 1 and the small grinding wheel 2 which are consistent except diameter and used in a staggered combination mode during use, a gap can be formed between the two large grinding wheels 1 and the small grinding wheel 2 in the middle, a handrail and the like can be sleeved, and the handrail is simultaneously ground at multiple angles, and is convenient to use.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a high efficiency railing emery wheel of polishing, includes big emery wheel (1) and little emery wheel (2), its characterized in that: square hole (3) have all been seted up at the center of big emery wheel (1) and little emery wheel (2), big emery wheel (1) and little emery wheel (2) all include plastics basic unit (4), first resin layer (5), second resin layer (6) and abrasive material layer (7), anti-skidding line (8) have been seted up on the surface of plastics basic unit (4), the top fixed surface of the bottom of plastics basic unit (4) and first resin layer (5) is connected, the top of plastics basic unit (4) and the bottom fixed connection of second resin layer (6), the surface of first resin layer (5) and second resin layer (6) all is connected with the internal surface fixed of abrasive material layer (7).
2. The manufacturing method of the high-efficiency rail grinding wheel according to claim 1, characterized by comprising the following steps:
step one, preparing materials: preparing sufficient materials such as phenolic resin, epoxy resin, silicon carbide particles, calcium carbonate powder, a binding agent and the like, customizing a grinding wheel mould of a large grinding wheel (1) and a small grinding wheel (2), a mould for quantifying a first resin layer (5) and a second resin layer (6), an injection mould of a plastic base layer (4) and a square tube matched with the square hole (3);
secondly, placing the square pipe in an injection mold, injecting plastic into the injection mold for molding, scraping uniform anti-skid grains (8) on the surface of the plastic base layer (4) on the molded plastic base layer (4) by using a scraper with teeth at equal intervals, marking the middle of the outer circular surface of the plastic base layer (4), and keeping for later use;
step three, respectively putting the calcium carbonate powder, the phenolic resin and the epoxy resin into a mixer for mixing and stirring, keeping heating in the stirring process, adding the binding agent after stirring for 1 hour, mixing and stirring again for 1 hour, then taking out the two mixed materials, standing for 10 minutes, and naturally cooling the mixed materials to be mixed sticky, wherein the mixed material of the calcium carbonate powder and the phenolic resin is the raw material of the first resin layer (5), and the mixed material of the calcium carbonate powder and the epoxy resin is the raw material of the second resin layer (6);
placing the square pipe in the middle of a quantitative mold, pouring a small amount of raw materials of the second resin layer (6) into the quantitative mold to be paved, sleeving the plastic base layer (4) on the square pipe, immersing the lower half part of the plastic base layer (4) into the second resin layer (6), properly supplementing the second resin layer (6) according to the liquid level to enable the liquid level to reach the position of a scale mark, and standing for 3 hours to enable the second resin layer (6) to be basically solidified;
step five, when the second resin layer (6) is not completely solidified, blowing hot air on the surface of the top of the second resin layer by using a hot air blower for heating to melt the surface of the top of the second resin layer, pouring the raw material of the first resin layer (5) in a viscous state into a quantitative mold to immerse the plastic base layer (4) and reach the specified position of the quantitative mold, standing for 3 hours to basically solidify the second resin layer (6), and taking out the first resin layer (5), the second resin layer (6), the plastic base layer (4) and the square tube integrally;
heating silicon carbide to high temperature by using a heating pot, heating a grinding wheel mould to a hotter state, firstly placing a square pipe in the middle of the grinding wheel mould, then uniformly paving the high-temperature silicon carbide taking part at the bottom of the grinding wheel mould, simultaneously blowing high-temperature hot air on the surfaces of a first resin layer (5) and a second resin layer (6) by using an air heater to melt the surfaces of the first resin layer and the second resin layer, then integrally placing the first resin layer (5), the second resin layer (6), a plastic base layer (4) and the square pipe into a grinding wheel mould, and then quickly uniformly pouring the rest high-temperature silicon carbide into the grinding wheel mould and flattening the surface;
and seventhly, after the material is placed, sleeving a square pipe with a pressing plate matched with the grinding wheel in shape, uniformly pressing down with a press machine to enable the first resin layer (5) and the second resin layer (6) molten on the surfaces to penetrate into the silicon carbide, taking out the whole mould, the grinding wheel and the like, cooling and solidifying at room temperature or low temperature, taking out to obtain a finished grinding wheel, and sampling and checking before warehousing.
3. The method for manufacturing the high-efficiency rail grinding wheel according to claim 2, wherein the method comprises the following steps: the ratio of the phenolic resin to the epoxy resin to the calcium carbonate powder to the binder is 2:1: 1.
4. The method for manufacturing the high-efficiency rail grinding wheel according to claim 2, wherein the method comprises the following steps: the overall thickness of the first resin layer (5) and the second resin layer (6) is required to be consistent.
5. The method for manufacturing the high-efficiency rail grinding wheel according to claim 2, wherein the method comprises the following steps: the square tube is a metal tube, is high temperature resistant and is not easy to deform when being heated.
6. The method for manufacturing the high-efficiency rail grinding wheel according to claim 2, wherein the method comprises the following steps: the ratio of the initial thickness of the first resin layer (5) to the second resin layer (6) to the thickness of the silicon carbide particle layer [ abrasive layer (7) ] is 1: 1.5.
7. The method for manufacturing the high-efficiency rail grinding wheel according to claim 2, wherein the method comprises the following steps: the pressure of the press is 8MPa, so that the first resin layer (5) and the second resin layer (6) can be fully infiltrated into the abrasive layer (7).
8. The method for manufacturing the high-efficiency rail grinding wheel according to claim 2, wherein the method comprises the following steps: the thickness of the large grinding wheel (1) is consistent with that of the small grinding wheel (2), and the processing modes except the diameter are consistent.
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| CN207239997U (en) * | 2017-10-09 | 2018-04-17 | 杭州思达研磨制品有限公司 | A kind of open plant sand dry abrasive paper |
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2018
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