阅读说明：本技术 一种金属-树脂复合型结合剂金刚石磨边轮及其制作方法 (Metal-resin composite bonding agent diamond edge grinding wheel and manufacturing method thereof ) 是由 朱艺添 于 2019-05-16 设计创作，主要内容包括：本发明公开了一种金属-树脂复合型结合剂金刚石磨边轮及其制作方法,磨边轮由如下重量份计的组分制作而成：金刚石8-14份、电解铜粉8-14份、钴粉2-8份、电解镍粉0.5-3份、锡粉1-5份、铜锡合金粉8-12份、高强度耐高温树脂结合剂35-42份、碳化硅8-12份、氧化铝4-8份、硬质酸锌1-3份。本发明通过调配金属-树脂复合型结合剂,能够提高金刚石磨边轮的使用寿命和削磨锋利度,进而提高削磨砖坯的优等率,节约电耗,提高生产效率,为砖坯削磨工序创造更高的价。(The invention discloses a metal-resin composite bonding agent diamond edge grinding wheel and a manufacturing method thereof, wherein the edge grinding wheel is manufactured by the following components in parts by weight: 8-14 parts of diamond, 8-14 parts of electrolytic copper powder, 2-8 parts of cobalt powder, 0.5-3 parts of electrolytic nickel powder, 1-5 parts of tin powder, 8-12 parts of copper-tin alloy powder, 35-42 parts of high-strength high-temperature-resistant resin bonding agent, 8-12 parts of silicon carbide, 4-8 parts of aluminum oxide and 1-3 parts of hard zinc. According to the invention, by blending the metal-resin composite bonding agent, the service life and the grinding sharpness of the diamond edge grinding wheel can be improved, so that the goodness rate of ground green bricks is improved, the power consumption is saved, the production efficiency is improved, and higher price is created for the green brick grinding process.)

1. The metal-resin composite bonding agent diamond edge grinding wheel is characterized by being prepared from the following components in parts by weight: 8-14 parts of diamond, 8-14 parts of electrolytic copper powder, 2-8 parts of cobalt powder, 0.5-3 parts of electrolytic nickel powder, 1-5 parts of tin powder, 8-12 parts of copper-tin alloy powder, 35-42 parts of high-strength high-temperature-resistant resin bonding agent, 8-12 parts of silicon carbide, 4-8 parts of aluminum oxide and 1-3 parts of hard zinc.

2. The metal-resin composite bonding agent diamond edging wheel according to claim 1, which is prepared from the following components in parts by weight: 12 parts of diamond, 12 parts of electrolytic copper powder, 5 parts of cobalt powder, 2 parts of electrolytic nickel powder, 3 parts of tin powder, 10 parts of copper-tin alloy powder, 38 parts of high-strength high-temperature-resistant resin bonding agent, 10 parts of silicon carbide, 6 parts of aluminum oxide and 2 parts of hard zinc.

3. The metal-resin composite type bonding agent diamond edging wheel as claimed in claim 1 or 2, wherein the screening particle size of the diamond is 180-250 mesh; the screening granularity of the electrolytic copper powder is 450-550 meshes; the screening granularity of the cobalt powder is 180-220 meshes; the screening granularity of the electrolytic nickel powder is 750-850 meshes; the screening granularity of the tin powder is 250-350 meshes; the screening granularity of the copper-tin alloy powder is 80-120 meshes; the screening granularity of the high-strength high-temperature-resistant resin binder is 180-220 meshes; the screening granularity of the silicon carbide is 220-260 meshes; the screening particle size of the alumina is 2800-.

4. The metal-resin composite bonding agent diamond edging wheel as claimed in claim 3, wherein the screening particle size of the diamond is 200-230 mesh; the screening granularity of the electrolytic copper powder is 500 meshes; the screening granularity of the cobalt powder is 200 meshes; the screening granularity of the electrolytic nickel powder is 800 meshes; the screening granularity of the tin powder is 300 meshes; the screening granularity of the copper-tin alloy powder is 100 meshes; the screening granularity of the high-strength high-temperature-resistant resin binder is 200 meshes; the screening granularity of the silicon carbide is 240 meshes; the screening granularity of the alumina is 3000 meshes.

5. The metal-resin composite bonding agent diamond edging wheel according to claim 1 or 2, wherein the mass ratio of copper to tin in the copper-tin alloy powder is 4: 1.

6. The metal-resin composite bonding agent diamond edging wheel according to claim 1 or 2, wherein the high-strength high-temperature resistant resin bonding agent is polyimide resin powder.

7. A manufacturing method of a metal-resin composite bonding agent diamond edge grinding wheel is characterized by comprising the following steps:

manufacturing a metal tool bit: placing the diamond, the electrolytic copper powder, the cobalt powder, the electrolytic nickel powder and the tin powder in a sintering machine according to the formula ratio to manufacture a metal tool bit;

crushing the metal cutter head: crushing the manufactured metal cutter head by adopting a hammering crushing method, and sieving to obtain grinding wheel powder with the granularity of 60#, wherein the grinding wheel powder is called powder A;

and (3) diffusing the copper-tin alloy powder: diffusing the copper-tin alloy powder to the surface of the powder A by using a diffusion method, completing the working procedure in a diffusion furnace to form dendritic powder, and weighing the dendritic powder as B powder;

mixing materials: mixing the powder B with silicon carbide, a high-strength high-temperature-resistant resin binder and a filler according to a formula amount, and then mixing the materials;

hot press molding: putting the mixed ingredients into a prepared die, carrying out hot press molding on an oil press, and demoulding after the hot press is finished;

and (3) secondary curing: carrying out secondary curing on the demolded edge grinding wheel;

and (3) post-treatment: and after the edge grinding wheel is solidified, turning, drilling and tapping are carried out according to the use requirement of the edge grinding wheel, and finally, the edge grinding wheel is packaged and warehoused.

8. The method of claim 7, wherein in the step of manufacturing the metal segments, the specific parameters of the sintering machine are as follows: the sintering temperature is 780 ℃, the sintering time is 3.5 minutes, and the hot pressing pressure is 35 MPa;

in the step of diffusing the copper-tin alloy powder, the specific parameters of the diffusion furnace are as follows: the temperature in the furnace was 560 ℃ and the diffusion time was 30 minutes.

9. The manufacturing method according to claim 7, wherein in the step of mixing, the ingredients are mixed as follows: mixing for 1 hour, sieving with 30 mesh sieve, and mixing for 1 hour;

in the step of hot-press molding, the mixed ingredients are put into a prepared die, and hot-pressed on an oil press for 60 minutes, wherein the hot-pressing temperature of an upper pressing plate and a lower pressing plate is 235 ℃, and the pressure is 10 MPa.

10. The method of claim 7, wherein in the secondary curing step, the edge grinding wheel after being released from the mold is placed in a curing device for curing under the following conditions: the first step is to raise the room temperature to 180 ℃ within 60 minutes; secondly, preserving the heat for 60 minutes at 180 ℃; the third step is to raise the temperature of 180 ℃ to 215 ℃ within 30 minutes; fourthly, preserving the heat for 60 minutes at 215 ℃; a fifth step of raising the temperature of 215 ℃ to 230 ℃ within 30 minutes; sixthly, preserving the heat for 300 minutes at 230 ℃; the seventh step is to reduce the temperature of 230 ℃ to 50 ℃ within 180 minutes, and the curing is finished.

Technical Field

The invention relates to the field of edge grinding wheels, in particular to a metal-resin composite bonding agent diamond edge grinding wheel and a manufacturing method thereof.

Background

The diamond grinding wheel is used as a special tool for ceramic tile edge grinding deep processing, and plays a role in edge grinding and sizing. In the last decade, along with the popularization and application of a high-yield ceramic tile grinding and polishing production line, the linear speed of the ceramic grinding and polishing line is faster and faster, and higher technological requirements are provided for ceramic tile edge grinding and deep processing. Under the background of large yield and high linear speed, the traditional metal bond grinding wheel is easy to generate the phenomenon of hard touch of the ceramic tile, so that the processing defects of corner loss, edge breakage and the like of the ceramic tile are caused, the quality of the ceramic tile is reduced, even the ceramic tile becomes defective, the resin bond grinding wheel can avoid the problem of hard touch of the ceramic tile, but the problems of too fast consumption, limited grinding force and the like of the grinding wheel are caused by the defects of low strength, poor wear resistance and heat resistance, weak holding force on diamond and the like of the resin bond, and the application of the product is also limited.

Disclosure of Invention

The invention aims to solve the technical problem of providing a metal-resin composite bonding agent diamond edge grinding wheel and a manufacturing method thereof aiming at the defects in the prior art. According to the invention, by blending the metal-resin composite bonding agent, the bonding agent suitable for the tool bit substrate is screened out from all metal bonding agents and resin bonding agents in the prior art, so that the service life and the grinding sharpness of the diamond edge grinding wheel can be improved, the high-grade rate of ground brick blanks is further improved, the power consumption is saved, the production efficiency is improved, and higher value is created for the grinding process of the brick blanks.

The technical scheme adopted by the invention for solving the technical problems is as follows: the metal-resin composite bonding agent diamond edge grinding wheel is prepared from the following components in parts by weight: 8-14 parts of diamond, 8-14 parts of electrolytic copper powder, 2-8 parts of cobalt powder, 0.5-3 parts of electrolytic nickel powder, 1-5 parts of tin powder, 8-12 parts of copper-tin alloy powder, 35-42 parts of high-strength high-temperature-resistant resin bonding agent, 8-12 parts of silicon carbide, 4-8 parts of aluminum oxide and 1-3 parts of hard zinc.

Further, the metal-resin composite bonding agent diamond edge grinding wheel is prepared from the following components in parts by weight: 12 parts of diamond, 12 parts of electrolytic copper powder, 5 parts of cobalt powder, 2 parts of electrolytic nickel powder, 3 parts of tin powder, 10 parts of copper-tin alloy powder, 38 parts of high-strength high-temperature-resistant resin bonding agent, 10 parts of silicon carbide, 6 parts of aluminum oxide and 2 parts of hard zinc.

Further, the screening granularity of the diamond is 180-250 meshes; the screening granularity of the electrolytic copper powder is 450-550 meshes; the screening granularity of the cobalt powder is 180-220 meshes; the screening granularity of the electrolytic nickel powder is 750-850 meshes; the screening granularity of the tin powder is 250-350 meshes; the screening granularity of the copper-tin alloy powder is 80-120 meshes; the screening granularity of the high-strength high-temperature-resistant resin binder is 180-220 meshes; the screening granularity of the silicon carbide is 220-260 meshes; the screening particle size of the alumina is 2800-.

Further, the screening granularity of the diamond is 200-230 meshes; the screening granularity of the electrolytic copper powder is 500 meshes; the screening granularity of the cobalt powder is 200 meshes; the screening granularity of the electrolytic nickel powder is 800 meshes; the screening granularity of the tin powder is 300 meshes; the screening granularity of the copper-tin alloy powder is 100 meshes; the screening granularity of the high-strength high-temperature-resistant resin binder is 200 meshes; the screening granularity of the silicon carbide is 240 meshes; the screening granularity of the alumina is 3000 meshes.

Further, the mass ratio of copper to tin in the copper-tin alloy powder is 4: 1.

Further, the high-strength high-temperature-resistant resin binder is polyimide resin powder.

The invention also provides a manufacturing method of the metal-resin composite bonding agent diamond edge grinding wheel, which comprises the following steps:

manufacturing a metal tool bit: placing the diamond, the electrolytic copper powder, the cobalt powder, the electrolytic nickel powder and the tin powder in a sintering machine according to the formula ratio to manufacture a metal tool bit;

crushing the metal cutter head: crushing the manufactured metal cutter head by adopting a hammering crushing method, and sieving to obtain grinding wheel powder with the granularity of 60#, wherein the grinding wheel powder is called powder A;

and (3) diffusing the copper-tin alloy powder: diffusing the copper-tin alloy powder to the surface of the powder A by using a diffusion method, completing the working procedure in a diffusion furnace to form dendritic powder, and weighing the dendritic powder as B powder;

mixing materials: mixing the powder B with silicon carbide, a high-strength high-temperature-resistant resin binder and a filler according to a formula amount, and then mixing the materials;

hot press molding: putting the mixed ingredients into a prepared die, carrying out hot press molding on an oil press, and demoulding after the hot press is finished;

and (3) secondary curing: carrying out secondary curing on the demolded edge grinding wheel;

and (3) post-treatment: and after the edge grinding wheel is solidified, turning, drilling and tapping are carried out according to the use requirement of the edge grinding wheel, and finally, the edge grinding wheel is packaged and warehoused.

Further, in the step of manufacturing the metal cutter head, specific parameters of the sintering machine are as follows: the sintering temperature is 780 ℃, the sintering time is 3.5 minutes, and the hot pressing pressure is 35 MPa;

in the step of diffusing the copper-tin alloy powder, the specific parameters of the diffusion furnace are as follows: the temperature in the furnace was 560 ℃ and the diffusion time was 30 minutes.

Further, in the step of mixing materials, the mixing and batching process is as follows: mixing for 1 hour, sieving with 30 mesh sieve, and mixing for 1 hour;

in the step of hot-press molding, the mixed ingredients are put into a prepared die, and hot-pressed on an oil press for 60 minutes, wherein the hot-pressing temperature of an upper pressing plate and a lower pressing plate is 235 ℃, and the pressure is 10 MPa.

Further, in the secondary curing step, the edge grinding wheel after demolding is placed in a curing device for curing, and the curing conditions are as follows: the first step is to raise the room temperature to 180 ℃ within 60 minutes; secondly, preserving the heat for 60 minutes at 180 ℃; the third step is to raise the temperature of 180 ℃ to 215 ℃ within 30 minutes; fourthly, preserving the heat for 60 minutes at 215 ℃; a fifth step of raising the temperature of 215 ℃ to 230 ℃ within 30 minutes; sixthly, preserving the heat for 300 minutes at 230 ℃; the seventh step is to reduce the temperature of 230 ℃ to 50 ℃ within 180 minutes, and the curing is finished.

The metal-resin composite bonding agent diamond edge grinding wheel and the manufacturing method thereof have the following beneficial effects:

according to the invention, by blending the metal-resin composite bonding agent, the bonding agent suitable for the tool bit substrate is screened out from all metal bonding agents and resin bonding agents in the prior art, so that the service life and the grinding sharpness of the diamond edge grinding wheel can be improved, the high-grade rate of ground brick blanks is further improved, the power consumption is saved, the production efficiency is improved, and higher value is created for the grinding process of the brick blanks.

The invention adopts a grinding heat conduction model based on a resin and metal composite principle, and carries out special treatment and process innovation on metal powder and diamond by adding high-strength high-temperature-resistant resin powder, thereby developing a novel product: the grinding wheel has the advantages that the metal-resin composite bonding agent diamond edge grinding wheel can be efficiently ground, and the early basic research shows that the grinding wheel not only solves the problem of hard-to-hard contact in the use process of the metal bonding agent grinding wheel, but also avoids the defects of poor heat resistance and weak grinding force of the resin grinding wheel.

Wherein, the special treatment and the technological innovation for the metal powder and the diamond comprise:

1. pre-sintering treatment, namely, performing hot-pressing pre-sintering treatment on metal powder pre-diamonds;

2. the crushed emery wheel powder containing diamond is processed by diffusing copper-tin alloy powder to form dendritic powder;

the advantages are respectively:

1. the holding force of metal bonding to diamond (the holding force is a special term in the field) is far higher than that of resin to diamond, and the service life and sharpness of a product are improved by hot pressing;

2. the broken diamond-containing grinding wheel powder is granular or spherical and is not beneficial to being combined with resin, and the dendritic powder is formed after being diffused by the copper tin 20 and then is sintered with the resin in a hot pressing way, so that the bonding force of the diamond-containing powder and the resin is improved, the holding force of a matrix on diamond is enhanced, and the sharpness and the service life of a product are improved;

3. in the high-speed grinding process of product, the diamond produces local high temperature for the resin directly melts, leads to the diamond to drop, and through foretell metal presintering and diffusion treatment back, the local high temperature that the diamond produced passes away the heat through the metal rapidly earlier, and the diamond phenomenon that drops that significantly reduces, thereby has increased the power of controlling of matrix to the diamond, improves the sharpness and the life-span of product.

Detailed Description

The invention will be further described with reference to specific embodiments:

in the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.

A metal-resin composite bonding agent diamond edge grinding wheel is prepared from the following components in parts by weight: 8-14 parts of diamond, 8-14 parts of electrolytic copper powder, 2-8 parts of cobalt powder, 0.5-3 parts of electrolytic nickel powder, 1-5 parts of tin powder, 8-12 parts of copper-tin alloy powder, 35-42 parts of high-strength high-temperature-resistant resin bonding agent, 8-12 parts of silicon carbide, 4-8 parts of aluminum oxide and 1-3 parts of hard zinc.

And (3) formula analysis:

according to the invention, diamond, electrolytic copper powder, cobalt powder, electrolytic nickel powder and tin powder are used as a tool bit matrix, the grinding wheel powder containing diamond is diffused by adding copper-tin alloy powder to form dendritic structure powder, and the dendritic structure powder and a high-strength high-temperature-resistant resin binding agent are used as a metal-resin composite binding agent for improving the sharpness and prolonging the service life of a diamond edge grinding wheel; the silicon carbide is used as an abrasive for improving the sharpness of the diamond edge grinding wheel; alumina is used as filler for improving the wear resistance of the diamond edge grinding wheel, and zinc stearate is used as a release agent for improving the easy production of the diamond edge grinding wheel. According to the invention, by blending the metal-resin composite bonding agent, the bonding agent suitable for the tool bit substrate is screened out from all metal bonding agents and resin bonding agents in the prior art, so that the service life and the grinding sharpness of the diamond edge grinding wheel can be improved, the high-grade rate of ground brick blanks is further improved, the power consumption is saved, the production efficiency is improved, and higher value is created for the grinding process of the brick blanks.

As the most preferred scheme, the metal-resin composite bonding agent diamond edge grinding wheel is prepared from the following components in parts by weight: 12 parts of diamond, 12 parts of electrolytic copper powder, 5 parts of cobalt powder, 2 parts of electrolytic nickel powder, 3 parts of tin powder, 10 parts of copper-tin alloy powder, 38 parts of high-strength high-temperature-resistant resin bonding agent, 10 parts of silicon carbide, 6 parts of aluminum oxide and 2 parts of hard zinc.

As a further preferable scheme, the screening particle size of the diamond is 180-250 meshes; the screening granularity of the electrolytic copper powder is 450-550 meshes; the screening granularity of the cobalt powder is 180-220 meshes; the screening granularity of the electrolytic nickel powder is 750-850 meshes; the screening granularity of the copper-tin alloy powder is 80-120 meshes; the screening granularity of the high-strength high-temperature-resistant resin binder is 180-220 meshes; the screening granularity of the silicon carbide is 220-260 meshes; the screening particle size of the alumina is 2800-.

As the most preferable scheme, the screening particle size of the diamond is 200-230 meshes; the screening granularity of the electrolytic copper powder is 500 meshes; the screening granularity of the cobalt powder is 200 meshes; the screening granularity of the electrolytic nickel powder is 800 meshes; the screening granularity of the copper-tin alloy powder is 100 meshes; the screening granularity of the high-strength high-temperature-resistant resin binder is 200 meshes; the screening granularity of the silicon carbide is 240 meshes; the screening granularity of the alumina is 3000 meshes.

More preferably, the mass ratio of copper to tin in the copper-tin alloy powder (CuSn 20, 80: 20) is 4: 1.

in a further preferred embodiment, the high-strength and high-temperature-resistant resin binder is polyimide resin powder.

The invention also provides a manufacturing method of the metal-resin composite bonding agent diamond edge grinding wheel, which comprises the following steps:

manufacturing a metal tool bit: placing the diamond, the electrolytic copper powder, the cobalt powder, the electrolytic nickel powder and the tin powder in a sintering machine according to the formula ratio to manufacture a metal tool bit;

crushing the metal cutter head: crushing the manufactured metal cutter head by adopting a hammering crushing method, and sieving to obtain grinding wheel powder with the granularity of 60#, wherein the grinding wheel powder is called powder A;

and (3) diffusing the copper-tin alloy powder: diffusing the copper-tin alloy powder to the surface of the powder A by using a diffusion method, completing the working procedure in a diffusion furnace to form dendritic powder, and weighing the dendritic powder as B powder;

mixing materials: mixing the powder B with silicon carbide, a high-strength high-temperature-resistant resin binder and a filler according to a formula amount, and then mixing the materials;

hot press molding: putting the mixed ingredients into a prepared die, carrying out hot press molding on an oil press, and demoulding after the hot press is finished;

and (3) secondary curing: carrying out secondary curing on the demolded edge grinding wheel;

and (3) post-treatment: and after the edge grinding wheel is solidified, turning, drilling and tapping are carried out according to the use requirement of the edge grinding wheel, and finally, the edge grinding wheel is packaged and warehoused.

As a further preferable scheme, in the step of manufacturing the metal cutter head, specific parameters of the sintering machine (also called a hot press) are as follows: the sintering temperature is 780 ℃, the sintering time is 3.5 minutes, and the hot pressing pressure is 35 MPa;

in the step of diffusing the copper-tin alloy powder, the specific parameters of the diffusion furnace are as follows: the temperature in the furnace was 560 ℃ and the diffusion time was 30 minutes.

As a further preferable scheme, in the step of mixing materials, the process of mixing ingredients is as follows: mixing for 1 hour, sieving with 30 mesh sieve, and mixing for 1 hour;

in the step of hot-press molding, the mixed ingredients are put into a prepared die, and hot-pressed on an oil press for 60 minutes, wherein the hot-pressing temperature of an upper pressing plate and a lower pressing plate is 235 ℃, and the pressure is 10 MPa.

In a further preferred embodiment, in the secondary curing step, the edge grinding wheel after being released from the mold is placed in a curing device for curing, and the curing conditions are as follows: the first step is to raise the room temperature to 180 ℃ within 60 minutes; secondly, preserving the heat for 60 minutes at 180 ℃; the third step is to raise the temperature of 180 ℃ to 215 ℃ within 30 minutes; fourthly, preserving the heat for 60 minutes at 215 ℃; a fifth step of raising the temperature of 215 ℃ to 230 ℃ within 30 minutes; sixthly, preserving the heat for 300 minutes at 230 ℃; the seventh step is to reduce the temperature of 230 ℃ to 50 ℃ within 180 minutes, and the curing is finished.