CN112171534A - Preparation method of high-strength high-heat-resistance resin grinding wheel cutting piece - Google Patents
Preparation method of high-strength high-heat-resistance resin grinding wheel cutting piece Download PDFInfo
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- CN112171534A CN112171534A CN202011054282.5A CN202011054282A CN112171534A CN 112171534 A CN112171534 A CN 112171534A CN 202011054282 A CN202011054282 A CN 202011054282A CN 112171534 A CN112171534 A CN 112171534A
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- Prior art keywords
- grinding wheel
- corundum
- particles
- heat
- phenolic resin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/12—Cut-off wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a preparation method of a high-strength high-heat-resistance resin abrasive wheel cutting piece, which is characterized by comprising white corundum, brown corundum, bright corundum, monocrystalline corundum, aluminum silicon carbide, black silicon carbide, onion oil, phenolic resin, furfural, creosote oil, cryolite, naphthalene particles, plastic particles, hollow alumina, graphite powder and polyimide.
Description
Technical Field
The invention discloses a preparation method of a high-strength high-heat-resistance resin abrasive cutting disc, and belongs to the technical field of preparation of resin abrasive cutting discs.
Background
The resin grinding wheel cutting piece is a special stainless steel cutting piece made of high-strength glass fiber mesh cloth, most of the resin grinding wheel cutting piece is made of high-quality composite corundum abrasive materials by a professional production process, the high-strength glass fiber mesh cloth has distinctive color and appearance, the product does not contain elements such as sulfur, iron and halogen, and the thickness of the product is smaller than that of a conventional product. The product has the characteristics of sharp cutting, raw material saving, no workpiece burning, no burr and the like;
however, in the continuous cutting process of the existing resin abrasive wheel cutting piece, because the high temperature is generated in the continuous cutting process, the cutting piece is easy to deform in a high-temperature environment, and the use of the cutting piece is influenced, so the invention provides the preparation method of the high-strength high-heat-resistance resin abrasive wheel cutting piece.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a preparation method of a high-strength and high-heat-resistance resin grinding wheel cutting piece, so that the problems are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a high-strength high-heat-resistance resin grinding wheel cutting piece comprises white corundum, brown corundum, bright corundum, single-crystal corundum, aluminum silicon carbide, black silicon carbide, onion oil, phenolic resin, furfural, creosote, cryolite, naphthalene particles, plastic particles, hollow alumina, graphite powder and polyimide, and comprises the following specific preparation steps:
(1) firstly, taking the weight ratio of 1: 1: 1: 2, putting the white corundum, the brown corundum, the bright corundum and the single crystal corundum into a grinder to be ground into small particles, putting the powder into a stirrer to be mixed and stirred, and adding graphite powder into the stirrer in the stirring process;
(2) putting the prepared mixed abrasive into a stirrer, adding onion oil and phenolic resin liquid, starting the stirrer to ensure that the mixed abrasive is fully contacted with the onion oil and the phenolic resin liquid, and adding polyimide in the stirring process;
(3) putting the raw materials prepared in the steps into a stirrer, sequentially adding furfural, creosote, cryolite, naphthalene particles, plastic particles and hollow alumina powder into the stirrer, then continuing stirring to uniformly mix the materials, and adding phenolic resin powder to continue stirring after the materials are uniformly mixed and stirred until the materials are stirred to a dry state;
(4) passing the prepared particles through a 260-mesh standard sieve, and grinding the particles out of the standard in a grinder until the particles meet the requirements;
(5) calculating the weight of the grinding wheel molding material according to the molding density of 2.24-2.24 g/cm < Sup >2</Sup >, placing the weighed raw material into a mold, scraping the raw material in the mold by using a scraper, covering a mold cover, and feeding the mold into a press to be pressed and molded by a pressing plate so as to obtain a grinding wheel blank;
(6) and (3) putting the grinding wheel blank prepared in the step into an electric oven for hardening, preserving the heat of the grinding wheel blank in the electric oven after a period of time, and taking out and cooling to room temperature to obtain the resin grinding wheel cutting sheet.
Furthermore, the weight ratio of the graphite powder to the monocrystalline corundum is as follows: 0.2: 1, the particle diameter of the graphite powder is far smaller than that of raw material particles of the monocrystalline corundum.
Furthermore, the scallion oil, the phenolic resin liquid, the furfural, the creosote oil, the cryolite, the naphthalene particles, the plastic particles and the hollow alumina have the following weight ratio: 1: 2.5: 2: 0.5: 1.5: 0.3: 0.3: 0.4, the weight ratio of the further phenolic resin liquid to the phenolic resin powder is completely the same.
Further, the temperature of the grinding wheel blank in the step (6) is kept at 175-.
Furthermore, the agitator needs to be cleaned for the next agitation after the agitation is used, so as to avoid other reactions between the residue and the raw material.
Furthermore, polyimide is prepared through low temperature polycondensation of dianhydride and diamine in methanol solvent mixture to obtain soluble polyamic acid, spinning and heating to about 300 deg.c for dewatering and ring formation to convert into polyimide.
Further, after the mixed abrasive of step (2) is fully contacted with the onion oil and the phenolic resin liquid, the aluminum silicon carbide powder and the black silicon carbide powder should be added after 1min of adding the polyimide.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the following steps of firstly, taking the components in a weight ratio of 1: 1: 1: 2, grinding the white corundum, the brown corundum, the bright corundum and the single-crystal corundum into small particles in a grinder, putting the powder into a stirrer for mixing and stirring, adding graphite powder into the stirrer during stirring, putting the prepared mixed abrasive into the stirrer, adding onion oil and phenolic resin liquid, starting the stirrer to ensure that the mixed abrasive is fully contacted with the onion oil and the phenolic resin liquid, adding polyimide during stirring, putting the raw materials prepared in the steps into the stirrer, sequentially adding furfural, creosote, cryolite, naphthalene particles, plastic particles and hollow alumina powder into the stirrer, then continuing stirring to ensure that all the materials are uniformly mixed, adding the phenolic resin powder after uniformly mixing and stirring until the materials are stirred to a dry state, and passing the prepared particles through a 260-mesh standard sieve, grinding the particles which are out of standard in a grinder until the particles meet the requirement, calculating the weight of the grinding wheel forming material according to the forming density of 2.24-2.24 g/cm < SUP >2</SUP >, putting the weighed raw materials into a mould, scraping the raw materials in the mould by using a scraper, covering a mould cover, sending the mould into a press machine for pressing and forming by a pressing plate to obtain a grinding wheel blank, putting the grinding wheel blank prepared in the step into an electric oven for hardening, preserving the heat of the grinding wheel blank in the electric oven after a period of time, taking out and cooling to room temperature to obtain the resin grinding wheel cutting piece, wherein a certain amount of graphite powder is added in the preparation process to effectively improve the hardness of the finished product, and polyimide is also added in the process and has the heat resistance of the performance, so that the heat resistance of the finished product can be effectively improved, so that the finished product still can not be damaged by the heat generated by cutting in the continuous cutting process.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A preparation method of a high-strength high-heat-resistance resin grinding wheel cutting piece comprises white corundum, brown corundum, bright corundum, single-crystal corundum, aluminum silicon carbide, black silicon carbide, onion oil, phenolic resin, furfural, creosote, cryolite, naphthalene particles, plastic particles, hollow alumina, graphite powder and polyimide, and comprises the following specific preparation steps:
(1) firstly, taking the weight ratio of 1: 1: 1: 2, putting the white corundum, the brown corundum, the bright corundum and the single crystal corundum into a grinder to be ground into small particles, putting the powder into a stirrer to be mixed and stirred, and adding graphite powder into the stirrer in the stirring process;
(2) putting the prepared mixed abrasive into a stirrer, adding onion oil and phenolic resin liquid, starting the stirrer to ensure that the mixed abrasive is fully contacted with the onion oil and the phenolic resin liquid, and adding polyimide in the stirring process;
(3) putting the raw materials prepared in the steps into a stirrer, sequentially adding furfural, creosote, cryolite, naphthalene particles, plastic particles and hollow alumina powder into the stirrer, then continuing stirring to uniformly mix the materials, and adding phenolic resin powder to continue stirring after the materials are uniformly mixed and stirred until the materials are stirred to a dry state;
(4) passing the prepared particles through a 260-mesh standard sieve, and grinding the particles out of the standard in a grinder until the particles meet the requirements;
(5) calculating the weight of the grinding wheel molding material according to the molding density of 2.24-2.24 g/cm < Sup >2</Sup >, placing the weighed raw material into a mold, scraping the raw material in the mold by using a scraper, covering a mold cover, and feeding the mold into a press to be pressed and molded by a pressing plate so as to obtain a grinding wheel blank;
(6) and (3) putting the grinding wheel blank prepared in the step into an electric oven for hardening, preserving the heat of the grinding wheel blank in the electric oven after a period of time, and taking out and cooling to room temperature to obtain the resin grinding wheel cutting sheet.
Wherein the weight ratio of the graphite powder to the monocrystalline corundum is as follows: 0.2: 1, the particle diameter of the graphite powder is far smaller than that of raw material particles of the monocrystalline corundum.
Wherein the scallion oil, the phenolic resin liquid, the furfural, the creosote oil, the cryolite, the naphthalene particles, the plastic particles and the hollow alumina have the following weight ratio: 1: 2.5: 2: 0.5: 1.5: 0.3: 0.3: 0.4, wherein the weight ratio of the phenolic resin liquid to the phenolic resin powder is completely the same.
Wherein, the temperature of the grinding wheel blank in the step (6) is kept at 175-.
Wherein, the agitator all needs the sanitization to carry out the stirring of next time after the stirring is used, avoids producing other reactions between residue and the raw materials.
The polyimide is prepared through low temperature polycondensation of dianhydride and diamine in methanol solvent mixture to obtain soluble polyamic acid, spinning and heating to about 300 deg.c for dewatering and ring formation to convert into polyimide.
Wherein, after the mixed abrasive material in the step (2) is fully contacted with the onion oil and the phenolic resin liquid, the aluminum silicon carbide and the black silicon carbide powder are added after 1min of adding the polyimide.
Specifically, firstly, taking a mixture of 1: 1: 1: 2, grinding the white corundum, the brown corundum, the bright corundum and the single-crystal corundum into small particles in a grinder, putting the powder into a stirrer for mixing and stirring, adding graphite powder into the stirrer during stirring, putting the prepared mixed abrasive into the stirrer, adding onion oil and phenolic resin liquid, starting the stirrer to ensure that the mixed abrasive is fully contacted with the onion oil and the phenolic resin liquid, adding polyimide during stirring, putting the raw materials prepared in the steps into the stirrer, sequentially adding furfural, creosote, cryolite, naphthalene particles, plastic particles and hollow alumina powder into the stirrer, then continuing stirring to ensure that all the materials are uniformly mixed, adding the phenolic resin powder after uniformly mixing and stirring until the materials are stirred to a dry state, and passing the prepared particles through a 260-mesh standard sieve, grinding the particles which are out of standard in a grinder until the particles meet the requirement, calculating the weight of the grinding wheel forming material according to the forming density of 2.24-2.24 g/cm < SUP >2</SUP >, putting the weighed raw materials into a mould, scraping the raw materials in the mould by using a scraper, covering a mould cover, sending the mould into a press machine for pressing and forming by a pressing plate to obtain a grinding wheel blank, putting the grinding wheel blank prepared in the step into an electric oven for hardening, preserving the heat of the grinding wheel blank in the electric oven after a period of time, taking out and cooling to room temperature to obtain the resin grinding wheel cutting piece, wherein a certain amount of graphite powder is added in the preparation process to effectively improve the hardness of the finished product, and polyimide is also added in the process and has the heat resistance of the performance, so that the heat resistance of the finished product can be effectively improved, so that the finished product still can not be damaged by the heat generated by cutting in the continuous cutting process.
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 (7)
1. A preparation method of a high-strength high-heat-resistance resin grinding wheel cutting piece is characterized by comprising white corundum, brown corundum, bright corundum, monocrystalline corundum, aluminum silicon carbide, black silicon carbide, onion oil, phenolic resin, furfural, creosote oil, cryolite, naphthalene particles, plastic particles, hollow alumina, graphite powder and polyimide, and the specific preparation steps are as follows:
(1) firstly, taking the weight ratio of 1: 1: 1: 2, putting the white corundum, the brown corundum, the bright corundum and the single crystal corundum into a grinder to be ground into small particles, putting the powder into a stirrer to be mixed and stirred, and adding graphite powder into the stirrer in the stirring process;
(2) putting the prepared mixed abrasive into a stirrer, adding onion oil and phenolic resin liquid, starting the stirrer to ensure that the mixed abrasive is fully contacted with the onion oil and the phenolic resin liquid, and adding polyimide in the stirring process;
(3) putting the raw materials prepared in the steps into a stirrer, sequentially adding furfural, creosote, cryolite, naphthalene particles, plastic particles and hollow alumina powder into the stirrer, then continuing stirring to uniformly mix the materials, and adding phenolic resin powder to continue stirring after the materials are uniformly mixed and stirred until the materials are stirred to a dry state;
(4) passing the prepared particles through a 260-mesh standard sieve, and grinding the particles out of the standard in a grinder until the particles meet the requirements;
(5) calculating the weight of the grinding wheel molding material according to the molding density of 2.24-2.24 g/cm < Sup >2</Sup >, placing the weighed raw material into a mold, scraping the raw material in the mold by using a scraper, covering a mold cover, and feeding the mold into a press to be pressed and molded by a pressing plate so as to obtain a grinding wheel blank;
(6) and (3) putting the grinding wheel blank prepared in the step into an electric oven for hardening, preserving the heat of the grinding wheel blank in the electric oven after a period of time, and taking out and cooling to room temperature to obtain the resin grinding wheel cutting sheet.
2. The method for preparing the high-strength high-heat-resistance resin grinding wheel cutting blade according to claim 1, characterized in that: the weight ratio of the graphite powder to the monocrystalline corundum is as follows: 0.2: 1, the particle diameter of the graphite powder is far smaller than that of raw material particles of the monocrystalline corundum.
3. The method for preparing the high-strength high-heat-resistance resin grinding wheel cutting blade according to claim 1, characterized in that: the scallion oil, the phenolic resin liquid, the furfural, the creosote oil, the cryolite, the naphthalene particles, the plastic particles and the hollow alumina are in the following weight ratio: 1: 2.5: 2: 0.5: 1.5: 0.3: 0.3: 0.4, wherein the weight ratio of the phenolic resin liquid to the phenolic resin powder is completely the same.
4. The method for preparing the high-strength high-heat-resistance resin grinding wheel cutting blade according to claim 1, characterized in that: and (4) keeping the temperature of the grinding wheel blank in the step (6) in an electric oven for hardening at 175-195 ℃, keeping the heat preservation time of the grinding wheel blank at 5-8h, and keeping the temperature of the grinding wheel blank at 180 ℃.
5. The method for preparing the high-strength high-heat-resistance resin grinding wheel cutting blade according to claim 1, characterized in that: the agitator all needs the sanitization to carry out the stirring of next time after the stirring is used, avoids producing other reactions between residue and the raw materials.
6. The method for preparing the high-strength high-heat-resistance resin grinding wheel cutting blade according to claim 1, characterized in that: polyimide is prepared through low-temperature polycondensation of dianhydride and diamine in methanol solvent mixture to obtain soluble polyamic acid, spinning, heating to 300 deg.c, and dewatering to form ring.
7. The method for preparing the high-strength high-heat-resistance resin grinding wheel cutting blade according to claim 1, characterized in that: after the mixed abrasive in the step (2) is fully contacted with the onion oil and the phenolic resin liquid, aluminum silicon carbide and black silicon carbide powder are added after 1min of adding the polyimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011054282.5A CN112171534A (en) | 2020-09-30 | 2020-09-30 | Preparation method of high-strength high-heat-resistance resin grinding wheel cutting piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011054282.5A CN112171534A (en) | 2020-09-30 | 2020-09-30 | Preparation method of high-strength high-heat-resistance resin grinding wheel cutting piece |
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| CN112171534A true CN112171534A (en) | 2021-01-05 |
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| CN202011054282.5A Pending CN112171534A (en) | 2020-09-30 | 2020-09-30 | Preparation method of high-strength high-heat-resistance resin grinding wheel cutting piece |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1652916A1 (en) * | 1966-11-02 | 1971-04-29 | Du Pont | Grinding wheel and method of making the same |
| CN101386154A (en) * | 2008-09-28 | 2009-03-18 | 广东奔朗超硬材料制品有限公司 | Resin anchoring agent diamond grinding wheel and production method thereof |
| CN102601745A (en) * | 2012-03-22 | 2012-07-25 | 湖南大学 | Preparation method of resin binder diamond abrasive product used for accurate grinding |
| CN102814763A (en) * | 2012-07-31 | 2012-12-12 | 安徽威铭耐磨材料有限公司 | Polyimide resin diamond grinding wheel and preparation method thereof |
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-
2020
- 2020-09-30 CN CN202011054282.5A patent/CN112171534A/en active Pending
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|---|---|---|---|---|
| DE1652916A1 (en) * | 1966-11-02 | 1971-04-29 | Du Pont | Grinding wheel and method of making the same |
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| CN102601745A (en) * | 2012-03-22 | 2012-07-25 | 湖南大学 | Preparation method of resin binder diamond abrasive product used for accurate grinding |
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| CN103831741A (en) * | 2014-02-11 | 2014-06-04 | 当涂县南方红月磨具磨料有限公司 | Ceramic and cubic boron nitride grinding wheel containing active carbon |
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| CN107400330A (en) * | 2017-08-09 | 2017-11-28 | 安徽昌悌进出口贸易有限公司 | A kind of heat-resisting emery wheel material of resin base high viscosity |
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Application publication date: 20210105 |