CN114700889A - Preparation process of high-strength grinding wheel for grinding steel rail - Google Patents
Preparation process of high-strength grinding wheel for grinding steel rail Download PDFInfo
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- CN114700889A CN114700889A CN202210296577.6A CN202210296577A CN114700889A CN 114700889 A CN114700889 A CN 114700889A CN 202210296577 A CN202210296577 A CN 202210296577A CN 114700889 A CN114700889 A CN 114700889A
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- 238000000227 grinding Methods 0.000 title claims abstract description 121
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 30
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000010431 corundum Substances 0.000 claims abstract description 23
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 23
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000011028 pyrite Substances 0.000 claims abstract description 19
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052683 pyrite Inorganic materials 0.000 claims abstract description 19
- 229910001610 cryolite Inorganic materials 0.000 claims abstract description 18
- 239000000080 wetting agent Substances 0.000 claims abstract description 16
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000292 calcium oxide Substances 0.000 claims abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 17
- 238000012216 screening Methods 0.000 claims description 15
- 239000010977 jade Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000007731 hot pressing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000012778 molding material Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
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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
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- 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
- B24D18/009—Tools not otherwise provided for
-
- 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
-
- 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
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
-
- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a preparation process of a high-strength grinding wheel for grinding a steel rail, which comprises a metal matrix and a grinding body, wherein the grinding body consists of the following components in parts by weight: 90-110 parts of zirconia corundum, 8-12 parts of brown corundum, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent. The corundum-zirconia is used as a main material of the grinding wheel, the corundum-zirconia is tough in texture, compact in structure, high in strength and good in thermal shock property, and has a better grinding effect on a steel rail, sulfur can be provided for the grinding wheel when the grinding wheel grinds the steel rail due to the addition of pyrite powder, so that the grinding effect of the grinding wheel on the steel rail is improved, the wear resistance of the whole grinding wheel can be effectively improved due to the fact that the wear-resisting agent is added and is used together with magnesium oxide and calcium oxide, the service life of the grinding wheel is prolonged, the melting point of cryolite is low, heat generated by grinding of the grinding wheel can be reduced, the self-sharpening property of the grinding wheel is enhanced, and damage of the grinding wheel to the steel rail can be effectively reduced.
Description
Technical Field
The invention belongs to the field of grinding wheel preparation, and particularly relates to a preparation process of a high-strength grinding wheel for rail grinding.
Background
Along with the development of domestic railways, the running speed of trains is continuously accelerated and the transportation volume is more intensive, the main damage of the steel rails, such as cracks, corrugation and the like, is caused frequently due to the power action of the trains, the natural environment, the quality of the steel rails and the like, the phenomena of the steel rails, such as the service life reduction, the maintenance workload and the cost increase, and potential safety hazards are also brought in serious cases, the steel rail grinding technology is used as a basic means for railway maintenance in China, plays a vital role in the running safety and the stability of the railways, the grinding wheel is used as an essential part in the steel rail grinding process, the requirements on the grinding wheel are extremely strict, the existing grinding wheel can cause the damage of the steel rails, such as oxidation burn or cracks and the like due to overhigh temperature in the using process, in addition, the grinding wheel is easy to wear in the using process, so that the grinding effect on the steel rails is reduced, the service life is short.
Disclosure of Invention
The invention aims to provide a preparation process of a high-strength grinding wheel for grinding a steel rail, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation process of a high-strength grinding wheel for grinding a steel rail comprises a metal matrix and a grinding body, wherein the grinding body comprises the following components in parts by weight: 90-110 parts of zirconia corundum, 8-12 parts of brown corundum, 3-5 parts of cryolite, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent.
The coupling agent is a silane coupling agent, and the modified phenolic resin is liquid modified phenolic resin.
The filler comprises the following components in parts by weight: 2-4 parts of magnesium oxide and 2-4 parts of calcium oxide.
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises the following operation steps:
s1: preparing raw materials, namely weighing the following raw materials in parts by weight: 90-110 parts of zirconia corundum, 8-12 parts of brown corundum, 3-5 parts of cryolite, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent;
s2: mixing 90-110 parts of zirconia corundum, 8-12 parts of brown steel jade, 3-5 parts of cryolite, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent to obtain a mixture;
s3: screening, namely screening the mixture through a screen to obtain a molding material, wherein the mesh number of the screen is 8-10 meshes, and the screening times are 2-4 times;
s4: pressing, namely uniformly adding the molding material into a molding die, and performing compression molding through a hot press to obtain a grinding wheel green body;
s5: hardening, namely putting the grinding wheel blank into a curing furnace for hardening, wherein the hardening temperature is 170-190 ℃, and the hardening time is 12-24H;
s6: and (4) shaping, namely trimming and finishing the hardened grinding wheel blank through a lathe and a grinding machine to obtain a finished product.
The mixing time of the raw materials in the S2 is 3-5h, and the mixing temperature is 15-25 ℃.
The hot pressing temperature in the S4 is 135-145 ℃, and the hot pressing time is 20-30 min.
The invention has the technical effects and advantages that:
the corundum zirconium is used as a main material of the grinding wheel, has tough texture, compact structure, high strength, good thermal shock resistance and good melt erosion resistance, can be used as a high-grade grinding material for manufacturing high-performance heavy-load grinding wheels, and has good grinding effect on steel pieces, iron castings, heat-resistant steel and various alloy materials; in addition, the liquid modified phenolic resin liquid is used as a mixed raw material, the defect that the traditional resin is limited in the practical application process due to poor high-temperature resistance and low carbonization temperature can be overcome, the high-temperature resistance of the whole grinding wheel is greatly improved, sulfur can be provided for the grinding wheel when the rail is ground by the aid of the pyrite powder, accordingly, the grinding effect of the grinding wheel on the rail is improved, the wear resistance of the whole grinding wheel can be effectively improved by the aid of the wear-resisting agent used together with magnesium oxide and calcium oxide, the service life of the grinding wheel is prolonged, the melting point of cryolite is low, heat generated by grinding of the grinding wheel can be reduced, the self-sharpening performance of the grinding wheel is enhanced, and damage of the grinding wheel to the rail can be effectively reduced.
Drawings
FIG. 1 is a flow chart of a manufacturing process of a high-strength grinding wheel for rail grinding.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Example 1
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises a metal matrix and a grinding body, wherein the grinding body comprises the following components in parts by weight: 90 parts of zirconia corundum, 8 parts of brown steel jade, 3 parts of cryolite, 8 parts of modified phenolic resin, 40 parts of pyrite powder, 4 parts of filler, 1 part of coupling agent, 3 parts of wear-resisting agent and 1 part of wetting agent.
The coupling agent is a silane coupling agent, and the modified phenolic resin is liquid modified phenolic resin.
The filler comprises the following components in parts by weight: 2 parts of magnesium oxide and 2 parts of calcium oxide.
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises the following operation steps:
s1: preparing raw materials, namely weighing the following raw materials in parts by weight: 90 parts of zirconia corundum, 8 parts of brown steel jade, 3 parts of cryolite, 8 parts of modified phenolic resin, 40 parts of pyrite powder, 4 parts of filler, 1 part of coupling agent, 3 parts of wear-resisting agent and 1 part of wetting agent;
s2: mixing 90 parts of zirconia corundum, 8 parts of brown steel jade, 3 parts of cryolite, 8 parts of modified phenolic resin, 40 parts of pyrite powder, 4 parts of filler, 1 part of coupling agent, 3 parts of wear-resisting agent and 1 part of wetting agent to obtain a mixture;
s3: screening, namely screening the mixture through a screen to obtain a molding material, wherein the mesh number of the screen is 8 meshes, and the screening times are 2 times;
s4: pressing, namely uniformly adding the molding material into a molding die, and performing compression molding through a hot press to obtain a grinding wheel green body;
s5: hardening, namely putting the grinding wheel blank into a curing furnace for hardening, wherein the hardening temperature is 170 ℃, and the hardening time is 12 h;
s6: and (4) shaping, namely trimming and finishing the hardened grinding wheel blank through a lathe and a grinding machine to obtain a finished product.
The mixing time of the raw materials in the S2 is 3h, and the mixing temperature is 15 ℃.
And in the S4, the hot pressing temperature is 135 ℃, and the hot pressing time is 20 min.
Example 2
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises a metal matrix and a grinding body, wherein the grinding body comprises the following components in parts by weight: 100 parts of zirconia corundum, 10 parts of brown steel jade, 4 parts of cryolite, 9 parts of modified phenolic resin, 45 parts of pyrite powder, 6 parts of filler, 1.5 parts of coupling agent, 4 parts of wear-resisting agent and 2 parts of wetting agent.
The coupling agent is a silane coupling agent, and the modified phenolic resin is liquid modified phenolic resin.
The filler comprises the following components in parts by weight: 3 parts of magnesium oxide and 3 parts of calcium oxide.
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises the following operation steps:
s1: preparing raw materials, namely weighing the following raw materials in parts by weight: 100 parts of zirconia corundum, 10 parts of brown steel jade, 4 parts of cryolite, 9 parts of modified phenolic resin, 45 parts of pyrite powder, 6 parts of filler, 1.5 parts of coupling agent, 4 parts of wear-resisting agent and 2 parts of wetting agent;
s2: mixing materials, namely mixing 100 parts of zirconia corundum, 10 parts of brown steel jade, 4 parts of cryolite, 9 parts of modified phenolic resin, 45 parts of pyrite powder, 6 parts of filler, 1.5 parts of coupling agent, 4 parts of wear-resisting agent and 2 parts of wetting agent to obtain a mixture;
s3: screening, namely screening the mixture through a screen to obtain a molding material, wherein the screen mesh number is 10 meshes, and the screening frequency is 3 times;
s4: pressing, namely uniformly adding the molding material into a molding die, and performing compression molding through a hot press to obtain a grinding wheel green body;
s5: hardening, namely putting the grinding wheel blank into a curing furnace for hardening, wherein the hardening temperature is 180 ℃, and the hardening time is 18 h;
s6: and (4) shaping, namely trimming and finishing the hardened grinding wheel blank through a lathe and a grinding machine to obtain a finished product.
The mixing time of the raw materials in the S2 is 4h, and the mixing temperature is 20 ℃.
And the hot pressing temperature in the S4 is 140 ℃, and the hot pressing time is 25 min.
Example 3
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises a metal matrix and a grinding body, wherein the grinding body comprises the following components in parts by weight: 110 parts of corundum zirconium, 12 parts of brown steel jade, 5 parts of cryolite, 10 parts of modified phenolic resin, 50 parts of pyrite powder, 8 parts of filler, 2 parts of coupling agent, 5 parts of wear-resisting agent and 3 parts of wetting agent.
The coupling agent is a silane coupling agent, and the modified phenolic resin is liquid modified phenolic resin.
The filler comprises the following components in parts by weight: 4 parts of magnesium oxide and 4 parts of calcium oxide.
A preparation process of a high-strength grinding wheel for grinding a steel rail comprises the following operation steps:
s1: preparing raw materials, namely weighing the following raw materials in parts by weight: 110 parts of zirconia corundum, 12 parts of brown steel jade, 5 parts of cryolite, 10 parts of modified phenolic resin, 50 parts of pyrite powder, 8 parts of filler, 2 parts of coupling agent, 5 parts of wear-resisting agent and 3 parts of wetting agent;
s2: mixing materials, namely mixing 110 parts of zirconia-corundum, 12 parts of brown steel jade, 5 parts of cryolite, 10 parts of modified phenolic resin, 50 parts of pyrite powder, 8 parts of filler, 2 parts of coupling agent, 5 parts of wear-resisting agent and 3 parts of wetting agent to obtain a mixture;
s3: screening, namely screening the mixture through a screen to obtain a molding material, wherein the screen mesh number is 10 meshes, and the screening times are 4 times;
s4: pressing, namely uniformly adding the molding material into a molding die, and performing compression molding through a hot press to obtain a grinding wheel green body;
s5: hardening, namely putting the grinding wheel blank into a curing furnace for hardening, wherein the hardening temperature is 190 ℃, and the hardening time is 12 hours;
s6: and (4) shaping, namely trimming and finishing the hardened grinding wheel blank through a lathe and a grinding machine to obtain a finished product.
The mixing time of the raw materials in the S2 is 5h, and the mixing temperature is 25 ℃.
And the hot pressing temperature in the S4 is 145 ℃, and the hot pressing time is 30 min.
The corundum zirconium is used as a main material of the grinding wheel, has tough texture, compact structure, high strength, good thermal shock resistance and good melt erosion resistance, can be used as a high-grade grinding material for manufacturing high-performance heavy-load grinding wheels, and has good grinding effect on steel pieces, iron castings, heat-resistant steel and various alloy materials; in addition, the liquid modified phenolic resin liquid is used as a mixed raw material, the defect that the traditional resin is limited in the practical application process due to poor high-temperature resistance and low carbonization temperature can be overcome, the high-temperature resistance of the whole grinding wheel is greatly improved, sulfur can be provided for the grinding wheel when the rail is ground by the aid of the pyrite powder, accordingly, the grinding effect of the grinding wheel on the rail is improved, the wear resistance of the whole grinding wheel can be effectively improved by the aid of the wear-resisting agent used together with magnesium oxide and calcium oxide, the service life of the grinding wheel is prolonged, the melting point of cryolite is low, heat generated by grinding of the grinding wheel can be reduced, the self-sharpening performance of the grinding wheel is enhanced, and damage of the grinding wheel to the rail can be effectively reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A preparation process of a high-strength grinding wheel for grinding a steel rail is characterized by comprising the following steps of: the grinding body comprises a metal matrix and a grinding body, wherein the grinding body consists of the following components in parts by weight: 90-110 parts of zirconia corundum, 8-12 parts of brown corundum, 3-5 parts of cryolite, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent.
2. The process for preparing the high-strength grinding wheel for grinding the steel rail according to claim 1, wherein the process comprises the following steps: the coupling agent is a silane coupling agent, and the modified phenolic resin is liquid modified phenolic resin.
3. The process for preparing the high-strength grinding wheel for grinding the steel rail according to claim 1, wherein the process comprises the following steps: the filler comprises the following components in parts by weight: 2-4 parts of magnesium oxide and 2-4 parts of calcium oxide.
4. The process for preparing the high-strength grinding wheel for grinding the steel rail according to claim 1, wherein the process comprises the following steps: the method comprises the following operation steps:
s1: preparing raw materials, namely weighing the following raw materials in parts by weight: 90-110 parts of zirconia corundum, 8-12 parts of brown corundum, 3-5 parts of cryolite, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent;
s2: mixing 90-110 parts of zirconia corundum, 8-12 parts of brown steel jade, 3-5 parts of cryolite, 8-10 parts of modified phenolic resin, 40-50 parts of pyrite powder, 4-8 parts of filler, 1-2 parts of coupling agent, 3-5 parts of wear-resisting agent and 1-3 parts of wetting agent to obtain a mixture;
s3: screening, namely screening the mixture through a screen to obtain a molding material, wherein the mesh number of the screen is 8-10 meshes, and the screening times are 2-4 times;
s4: pressing, namely uniformly adding the molding material into a molding die, and performing compression molding through a hot press to obtain a grinding wheel green body;
s5: hardening, namely putting the grinding wheel blank into a curing furnace for hardening, wherein the hardening temperature is 170-190 ℃, and the hardening time is 12-24H
S6: and (4) shaping, namely trimming and finishing the hardened grinding wheel blank through a lathe and a grinding machine to obtain a finished product.
5. The process for preparing the high-strength grinding wheel for grinding the steel rail according to claim 4, wherein the process comprises the following steps: the mixing time of the raw materials in the S2 is 3-5h, and the mixing temperature is 15-25 ℃.
6. The process for preparing the high-strength grinding wheel for grinding the steel rail according to claim 4, wherein the process comprises the following steps: the hot pressing temperature in the S4 is 135-145 ℃, and the hot pressing time is 20-30 min.
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| CN202210296577.6A CN114700889A (en) | 2022-03-24 | 2022-03-24 | Preparation process of high-strength grinding wheel for grinding steel rail |
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| CN202210296577.6A CN114700889A (en) | 2022-03-24 | 2022-03-24 | Preparation process of high-strength grinding wheel for grinding steel rail |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115229695A (en) * | 2022-08-09 | 2022-10-25 | 久铖高科(厦门)集团有限公司 | Mixing process for steel rail grinding wheel |
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| CN109108844A (en) * | 2018-08-07 | 2019-01-01 | 安徽砥钻砂轮有限公司 | A kind of resinoid bond abrasive cut-off wheel of heat-resistant antifriction |
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2022
- 2022-03-24 CN CN202210296577.6A patent/CN114700889A/en active Pending
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| US5611827A (en) * | 1994-11-02 | 1997-03-18 | Norton Company | Method for preparing mixtures for abrasive articles |
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