CN109277957B - Cutter head with uniformly distributed diamonds and preparation process thereof - Google Patents
Cutter head with uniformly distributed diamonds and preparation process thereof Download PDFInfo
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- CN109277957B CN109277957B CN201810980920.2A CN201810980920A CN109277957B CN 109277957 B CN109277957 B CN 109277957B CN 201810980920 A CN201810980920 A CN 201810980920A CN 109277957 B CN109277957 B CN 109277957B
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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
- B24D3/04—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 inorganic
- B24D3/06—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 inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
- B24D3/10—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 inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for porous or cellular structure, e.g. for use with diamonds as abrasives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
- B28D1/121—Circular saw blades
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a cutter head with uniformly distributed diamonds, which is characterized by comprising a cutter head body, wherein the cutter head body is formed by pressing a plurality of layers of slices, and each layer of slice is formed by fully mixing and cold-pressing diamond spheroidized particles and metal powder spheroidized particles according to a comprehensive proportion; the diamond spheroidized particles are formed by coating diamond with a metal powder coating and spheroidizing; the size of the diamond spheroidized particles is 30-80 meshes; the metal powder spheroidized particles are formed by directly spheroidizing metal powder; the size of the metal powder spheroidized particles is 15-120 meshes; the diamond spheroidized particles and the metal powder spheroidized particles are mixed according to the proportion of 10 to 20 percent. The invention can prevent diamond segregation of the cutter teeth, avoid the instability of the use of the diamond tool, keep the cutting speed consistent and provide good cutting hand feeling for users.
Description
Technical Field
The invention relates to the application field of diamonds, in particular to a tool bit with uniformly distributed diamonds and a preparation process thereof.
Background
Diamond is the hardest substance in nature and is widely used in industrial production, such as cutting, punching, road repairing, fine polishing and grinding, automobile bearing grinding and the like.
The traditional diamond tool is generally prepared by directly mixing diamond and metal powder, weighing the materials by manpower, pressing the materials into a mould, and finally carrying out pressureless sintering or vacuum sintering. The production process of the traditional diamond tool has the following defects in the manufacturing and use processes:
firstly, diamonds are generally irregular in shape and randomly distributed in a tool bit matrix, segregation phenomenon, namely uneven distribution, is easily generated in the forming process of a mixer, so that the local diamond amount is excessive, partial diamond particles fall off without participating in cutting work at the place where the diamond amount is excessive, and tool bit abrasion is too fast at the place where the diamond amount is little or no, so that the integral cutting efficiency and the using effect of the saw blade are influenced;
secondly, pure diamond is nonmetal, and the existing sintering process is difficult to be adhered together with the matrix through chemical reaction, namely the matrix has relatively weak holding force on the diamond, and the diamond is easy to fall off too early due to external force impact in the cutting process, so that the service life of the product is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a cutter head with uniformly distributed diamonds and a preparation process thereof, which can overcome the problems that the traditional diamond cutter head is easy to cause the segregation of diamonds in the production process, so that the local diamond concentration in a cutter head matrix is higher, the cutting efficiency of a saw blade is influenced, and meanwhile, the produced diamond cutter head has poor holding force of the matrix on the diamonds, and the diamond falls off too fast in the cutting process, so that the service life of a product is short.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cutter head with uniformly distributed diamonds comprises a cutter head body, wherein the cutter head body is formed by pressing a plurality of layers of slices, and each layer of slice is formed by fully mixing and cold-pressing diamond spheroidized particles and metal powder spheroidized particles according to a comprehensive proportion;
the diamond spheroidized particles are formed by coating diamond with a metal powder coating and spheroidizing; the size of the diamond spheroidized particles is 30-80 meshes;
the metal powder spheroidized particles are formed by directly spheroidizing metal powder; the size of the metal powder spheroidized particles is 15-120 meshes;
the diamond spheroidized particles and the metal powder spheroidized particles are mixed according to the proportion of 10 to 20 percent.
Preferably, the metal powder coating is a material selected from one or more of the group consisting of Fe, Ni, Cu, Co, Sn, Zn, WC, paraffin, and alcohol.
Preferably, the metal powder is an alloy material composed of one or more of Fe, Ni, Cu, Co, CuSn, Zn, and WC.
The saw blade based on the tool bit with the uniformly distributed diamonds comprises the tool bit and a base body for welding the tool bit.
Preferably, the base member is the disc structure that the edge has a plurality of evenly distributed's tooth base, the tool bit is arc strip structure and has a plurality ofly, and a plurality of tool bits correspond respectively to weld on a plurality of tooth bases at base member edge.
Preferably, the thickness of the ruler of the cutter head is 1.8-15 mm; the tooth height of the cutter head is 4-15 mm.
The preparation process of the tool bit based on the uniform distribution of the diamonds comprises the following steps:
the method comprises the following steps: selecting diamond particles to be granulated, performing coating spheroidization to obtain diamond spheroidized particles uniformly coated with a metal powder coating on the surfaces of the diamond particles, and then screening to obtain diamond spheroidized particles with required sizes;
step two: selecting required metal powder, and carrying out spheroidizing treatment and screening to obtain metal powder spheroidized particles with required sizes;
step three: placing the prepared diamond spheroidized particles and the prepared metal powder spheroidized particles into a hydrogen sintering furnace for heating sintering and fully mixing, controlling the temperature to be 450-800 ℃, and keeping the temperature for 1-2 hours; in the process, the diamond and the metal powder coating coated on the surface of the diamond can further react fully, so that a transition layer is formed between the diamond and the metal powder coating, and the bonding force between the diamond and the metal powder coating is improved;
step four: carrying out layered cold press molding on the diamond spheroidized particles and the metal powder spheroidized particles which are heated, sintered and fully mixed to obtain a layered sheet with uniformly distributed diamonds;
step five: and placing and fixing the layered sheets with uniformly distributed diamonds by using a graphite die matched with the tool bit, sintering the layered sheets through a hot-pressing sintering furnace, demolding and post-treating the layered sheets, and finally forming the tool bit with uniformly distributed diamonds and the required number of layers of sheets.
Preferably, the preparation process of the diamond spheroidized particles in the first step comprises the following steps:
firstly, preparing curing liquid and diamond particles which are composed of 5-10 parts of alcohol, 5-10 parts of FeCu powder and 0.5-1 part of paraffin, correspondingly and respectively putting the curing liquid and the diamond particles into a coating machine, enabling the diamond particles to rotate at a high speed under the action of the coating machine, heating and stirring the curing liquid in the coating machine, and spraying the curing liquid onto the diamond particles rotating at the high speed to form a diamond coating;
then correspondingly and respectively placing the diamond coating and the metal powder coating into a nodulizing machine, wherein the diamond coating rotates at a high speed under the action of the nodulizing machine, and the metal powder coating is heated and stirred in the nodulizing machine and then sprayed onto the diamond coating rotating at the high speed to form a soft diamond nodulized particle primary product;
then sintering the soft diamond spheroidized particle primary product in a sintering furnace and carrying out redox reaction to remove impurities so as to obtain hard diamond spheroidized particles with different sizes;
and finally, screening the hard diamond spheroidized particles with different sizes through a sieve to obtain the diamond spheroidized particle finished product with the required size.
Preferably, the preparation process of the metal powder spheroidized particles in the second step is as follows:
firstly, directly putting prepared metal powder into a spheroidizing machine correspondingly, heating and stirring, then spraying and rotating at a high speed to form a soft metal powder spheroidized particle primary product;
then sintering the soft metal powder spheroidized particle primary product in a sintering furnace and carrying out redox reaction to remove impurities so as to obtain hard metal powder spheroidized particles with different sizes;
and finally, screening the hard metal powder spheroidized particles with different sizes through a sieve to obtain the metal powder spheroidized particle finished product with the required size.
Preferably, in the fifth step, the post-treatment to be performed on the tool bit after demolding is as follows: deburring, sand blasting and grinding.
Compared with the prior art, the invention has the advantages that:
1) the diamond tool prepared by the invention can prevent the diamond segregation of the cutter teeth on the premise of not influencing later-stage manufacture, avoids the instability of the diamond tool in use, can keep the cutting speed consistent, and provides good cutting hand feeling for users.
2) Because the diamond is pretreated by the diamond spheroidizing process in the production process of the diamond tool bit, a layer of compact bonding layer is formed on the surface of the diamond and can generate chemical reaction with the matrix metal powder in the sintering process to alloy the matrix metal powder, the holding force of the diamond is improved, and the diamond falling rate is reduced by 20-40% compared with that of the diamond prepared by the common process through experimental confirmation.
3) Because the diamond and the metal powder are both subjected to a granulation process, namely spheroidizing pretreatment, and the associated sizes are matched with each other, the method is very favorable for forming automation work, is suitable for mass production, improves the working efficiency, avoids the problem of dust flying in the production process of the traditional process, and has obvious effect on improving the operation site environment.
4) Adopt lamellar sheet shaping design can satisfy different processing object design demands such as three-layer, five-layer, increase the chip removal, the thermal diffusivity promotes, and cutting performance obtains greatly improving, and the cutting contrast sharpness improves 20 ~ 40% to can guarantee the uniformity all the time.
Drawings
FIG. 1 is a schematic representation of the configuration of a uniformly diamond distributed tool tip of the present invention;
FIG. 2 is a schematic view of a saw blade configuration of the present invention having uniformly diamond distributed tips;
fig. 3 is a simplified schematic of the equipment and process flow used in the preparation of diamond spheroidized particles according to the present invention.
Wherein: 1. a coating machine; 2. a balling machine; 3. sintering furnace; 4. sieving; 10. a cutter head; 20. a substrate; 21. a tooth base.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, a tool bit 10 with uniformly distributed diamonds comprises a tool bit body, wherein the tool bit body is formed by pressing a plurality of layers of sheets, and each layer of sheet is formed by fully mixing and cold-pressing diamond spheroidized particles and metal powder spheroidized particles according to a comprehensive proportion;
the diamond spheroidized particles are formed by coating diamond with a metal powder coating and spheroidizing; the size of the diamond spheroidized particles is 30-80 meshes;
the metal powder spheroidized particles are formed by directly spheroidizing metal powder; the size of the metal powder spheroidized particles is 15-120 meshes;
the diamond spheroidized particles and the metal powder spheroidized particles are mixed according to the proportion of 10 to 20 percent.
Preferably, the metal powder coating is a material selected from one or more of the group consisting of Fe, Ni, Cu, Co, Sn, Zn, WC, paraffin, and alcohol.
Preferably, the metal powder is an alloy material composed of one or more of Fe, Ni, Cu, Co, CuSn, Zn, and WC.
The preparation process of the diamond spheroidized particles comprises the following steps:
firstly, preparing curing liquid and diamond particles which are composed of 5-10 parts of alcohol, 5-10 parts of FeCu powder and 0.5-1 part of paraffin, respectively putting the curing liquid and the diamond particles into a coating machine 1 correspondingly, rotating the diamond particles at a high speed under the action of the coating machine 1, heating and stirring the curing liquid in the coating machine 1, and spraying the curing liquid on the diamond particles rotating at the high speed to form a diamond coating;
then correspondingly and respectively placing the diamond coating and the metal powder coating into a nodulizer 2, wherein the diamond coating rotates at a high speed under the action of the nodulizer 2, and the metal powder coating is heated and stirred in the nodulizer 2 and then sprayed onto the diamond coating rotating at the high speed to form a soft diamond nodulized particle primary product;
then, sintering the soft diamond spheroidized particle primary product in a sintering furnace 3 and carrying out redox reaction to remove impurities so as to obtain hard diamond spheroidized particles with different sizes;
and finally, screening the hard diamond spheroidized particles with different sizes through a sieve 4 to obtain the diamond spheroidized particle finished product with the required size.
The preparation process of the metal powder spheroidized particles comprises the following steps:
firstly, directly putting prepared metal powder into a nodulizer 2 correspondingly, heating and stirring, spraying and rotating at a high speed to form a soft metal powder nodulized particle primary product;
then, the soft metal powder spheroidized particle primary product is put into a sintering furnace 3 for sintering and is subjected to oxidation-reduction reaction to remove impurities, so that hard metal powder spheroidized particles with different sizes are obtained;
and finally, screening the hard metal powder spheroidized particles with different sizes through a sieve 4 to obtain the metal powder spheroidized particle finished product with the required size.
It should be noted that the equipment, coating machine, spheroidizing machine, sintering furnace, sieve, etc. used in the preparation process of the diamond spheroidized particles and the metal powder spheroidized particles all adopt the common equipment in the prior art, and are not described herein again.
Preferably, the coating machine 1 is operated once for 0.5 to 1 hour, the spheroidizing machine 2 is operated once for 1 to 1.5 hours, and the sintering furnace 3 is operated once for about 2 hours.
As shown in fig. 2, the saw blade based on the cutting tip having the uniformly distributed diamonds includes the cutting tip 10 and a base 20 for welding the cutting tip 10.
Preferably, the base body 20 is a disk structure having a plurality of tooth bases 21 uniformly distributed on an edge thereof, the tool bits 10 are arc-shaped and have a plurality of strip-shaped structures, and the plurality of tool bits 10 are respectively welded on the plurality of tooth bases 21 on the edge of the base body 20 correspondingly.
Preferably, the thickness of the tool bit 10 is 1.8-15 mm; the tooth height of the cutter head 10 is 4-15 mm.
The preparation process of the tool bit based on the uniform distribution of the diamonds comprises the following steps:
the method comprises the following steps: selecting diamond particles to be granulated, performing coating spheroidization to obtain diamond spheroidized particles uniformly coated with a metal powder coating on the surfaces of the diamond particles, and then screening to obtain diamond spheroidized particles with required sizes;
step two: selecting required metal powder, and carrying out spheroidizing treatment and screening to obtain metal powder spheroidized particles with required sizes;
step three: placing the prepared diamond spheroidized particles and the prepared metal powder spheroidized particles into a hydrogen sintering furnace for heating sintering and fully mixing, controlling the temperature to be 450-800 ℃, and keeping the temperature for 1-2 hours; in the process, the diamond and the metal powder coating coated on the surface of the diamond can further react fully, so that a transition layer is formed between the diamond and the metal powder coating, and the bonding force between the diamond and the metal powder coating is improved;
step four: carrying out layered cold press molding on the diamond spheroidized particles and the metal powder spheroidized particles which are heated, sintered and fully mixed to obtain a layered sheet with uniformly distributed diamonds;
step five: and placing and fixing the layered sheets with uniformly distributed diamonds by using a graphite die matched with the tool bit, sintering the layered sheets through a hot-pressing sintering furnace, demolding and post-treating the layered sheets, and finally forming the tool bit with uniformly distributed diamonds and the required number of layers of sheets.
Preferably, the preparation process of the diamond spheroidized particles in the first step comprises the following steps:
firstly, preparing curing liquid and diamond particles which are composed of 5-10 parts of alcohol, 5-10 parts of FeCu powder and 0.5-1 part of paraffin, respectively putting the curing liquid and the diamond particles into a coating machine 1 correspondingly, rotating the diamond particles at a high speed under the action of the coating machine 1, heating and stirring the curing liquid in the coating machine 1, and spraying the curing liquid on the diamond particles rotating at the high speed to form a diamond coating;
then correspondingly and respectively placing the diamond coating and the metal powder coating into a nodulizer 2, wherein the diamond coating rotates at a high speed under the action of the nodulizer 2, and the metal powder coating is heated and stirred in the nodulizer 2 and then sprayed onto the diamond coating rotating at the high speed to form a soft diamond nodulized particle primary product;
then, sintering the soft diamond spheroidized particle primary product in a sintering furnace 3 and carrying out redox reaction to remove impurities so as to obtain hard diamond spheroidized particles with different sizes;
and finally, screening the hard diamond spheroidized particles with different sizes through a sieve 4 to obtain the diamond spheroidized particle finished product with the required size.
Preferably, the preparation process of the metal powder spheroidized particles in the second step is as follows:
firstly, directly putting prepared metal powder into a nodulizer 2 correspondingly, heating and stirring, spraying and rotating at a high speed to form a soft metal powder nodulized particle primary product;
then, the soft metal powder spheroidized particle primary product is put into a sintering furnace 3 for sintering and is subjected to oxidation-reduction reaction to remove impurities, so that hard metal powder spheroidized particles with different sizes are obtained;
and finally, screening the hard metal powder spheroidized particles with different sizes through a sieve 4 to obtain the metal powder spheroidized particle finished product with the required size.
Preferably, in the fifth step, the post-treatment to be performed on the tool bit after demolding is as follows: deburring, sand blasting and grinding.
Compared with the prior art, the invention has the advantages that:
1) the diamond tool prepared by the invention can prevent the diamond segregation of the cutter teeth on the premise of not influencing later-stage manufacture, avoids the instability of the diamond tool in use, can keep the cutting speed consistent, and provides good cutting hand feeling for users.
2) Because the diamond is pretreated by the diamond spheroidizing process in the production process of the diamond tool bit, a layer of compact bonding layer is formed on the surface of the diamond and can generate chemical reaction with the matrix metal powder in the sintering process to alloy the matrix metal powder, the holding force of the diamond is improved, and the diamond falling rate is reduced by 20-40% compared with that of the diamond prepared by the common process through experimental confirmation.
3) Because the diamond and the metal powder are both subjected to a granulation process, namely spheroidizing pretreatment, and the associated sizes are matched with each other, the method is very favorable for forming automation work, is suitable for mass production, improves the working efficiency, avoids the problem of dust flying in the production process of the traditional process, and has obvious effect on improving the operation site environment.
4) Adopt lamellar sheet shaping design can satisfy different processing object design demands such as three-layer, five-layer, increase the chip removal, the thermal diffusivity promotes, and cutting performance obtains greatly improving, and the cutting contrast sharpness improves 20 ~ 40% to can guarantee the uniformity all the time.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. The cutter head with uniformly distributed diamonds is characterized by comprising a cutter head body, wherein the cutter head body is formed by pressing a plurality of layers of slices, and each layer of slice is formed by fully mixing and cold-pressing diamond spheroidized particles and metal powder spheroidized particles according to a comprehensive proportion;
the diamond spheroidized particles are formed by coating diamond spheroidization with a metal powder coating, and the metal powder coating is a material consisting of one or more of Fe, Ni, Cu, Co, Sn, Zn and WC; the size of the diamond spheroidized particles is 30-80 meshes;
the metal powder spheroidized particles are formed by directly spheroidizing metal powder, and the metal powder is an alloy material consisting of one or more of Fe, Ni, Cu, Co, CuSn, Zn and WC; the size of the metal powder spheroidized particles is 15-120 meshes;
the diamond spheroidized particles and the metal powder spheroidized particles are mixed according to the proportion of 10 to 20 percent;
the preparation process of the cutter head with uniformly distributed diamonds comprises the following steps:
the method comprises the following steps: selecting diamond particles to be granulated, performing coating spheroidization to obtain diamond spheroidized particles uniformly coated with a metal powder coating on the surfaces of the diamond particles, and then screening to obtain diamond spheroidized particles with required sizes;
step two: selecting required metal powder, and carrying out spheroidizing treatment and screening to obtain metal powder spheroidized particles with required sizes;
step three: placing the prepared diamond spheroidized particles and the prepared metal powder spheroidized particles into a hydrogen sintering furnace for heating sintering and fully mixing, controlling the temperature to be 450-800 ℃, and keeping the temperature for 1-2 hours;
step four: carrying out layered cold press molding on the diamond spheroidized particles and the metal powder spheroidized particles which are heated, sintered and fully mixed to obtain a layered sheet with uniformly distributed diamonds;
step five: and placing and fixing the layered sheets with uniformly distributed diamonds by using a graphite die matched with the tool bit, sintering the layered sheets through a hot-pressing sintering furnace, demolding and post-treating the layered sheets, and finally forming the tool bit with uniformly distributed diamonds and the required number of layers of sheets.
2. A saw blade having a uniform distribution of diamonds comprising the tip of claim 1 and a substrate for welding said tip.
3. The uniformly diamond distributed saw blade according to claim 2, wherein said base is a disk structure having a plurality of uniformly distributed tooth bases on the edge thereof, said cutting tip has an arc-shaped strip structure and a plurality of cutting tips are welded on the plurality of tooth bases on the edge of the base, respectively.
4. The saw blade having uniformly distributed diamonds according to claim 3, wherein the tooth thickness of said cutting tip is 1.8 to 15 mm; the tooth height of the cutter head is 4-15 mm.
5. The process for preparing a tool tip with uniformly distributed diamonds according to claim 1, comprising the steps of:
the method comprises the following steps: selecting diamond particles to be granulated, performing coating spheroidization to obtain diamond spheroidized particles uniformly coated with a metal powder coating on the surfaces of the diamond particles, and then screening to obtain diamond spheroidized particles with required sizes;
step two: selecting required metal powder, and carrying out spheroidizing treatment and screening to obtain metal powder spheroidized particles with required sizes;
step three: placing the prepared diamond spheroidized particles and the prepared metal powder spheroidized particles into a hydrogen sintering furnace for heating sintering and fully mixing, controlling the temperature to be 450-800 ℃, and keeping the temperature for 1-2 hours;
step four: carrying out layered cold press molding on the diamond spheroidized particles and the metal powder spheroidized particles which are heated, sintered and fully mixed to obtain a layered sheet with uniformly distributed diamonds;
step five: and placing and fixing the layered sheets with uniformly distributed diamonds by using a graphite die matched with the tool bit, sintering the layered sheets through a hot-pressing sintering furnace, demolding and post-treating the layered sheets, and finally forming the tool bit with uniformly distributed diamonds and the required number of layers of sheets.
6. The process for manufacturing a tool tip with uniformly distributed diamonds according to claim 5, wherein the process for manufacturing spheroidized particles of diamonds in said first step is:
firstly, preparing curing liquid and diamond particles which are composed of 5-10 parts of alcohol, 5-10 parts of FeCu powder and 0.5-1 part of paraffin, correspondingly and respectively putting the curing liquid and the diamond particles into a coating machine, enabling the diamond particles to rotate at a high speed under the action of the coating machine, heating and stirring the curing liquid in the coating machine, and spraying the curing liquid onto the diamond particles rotating at the high speed to form a diamond coating;
then correspondingly and respectively placing the diamond coating and the metal powder coating into a nodulizing machine, wherein the diamond coating rotates at a high speed under the action of the nodulizing machine, and the metal powder coating is heated and stirred in the nodulizing machine and then sprayed onto the diamond coating rotating at the high speed to form a soft diamond nodulized particle primary product;
then sintering the soft diamond spheroidized particle primary product in a sintering furnace and carrying out redox reaction to remove impurities so as to obtain hard diamond spheroidized particles with different sizes;
and finally, screening the hard diamond spheroidized particles with different sizes through a sieve to obtain the diamond spheroidized particle finished product with the required size.
7. The process for preparing a tool bit with uniformly distributed diamonds according to claim 5, wherein the process for preparing the spheroidized particles of the metal powder in the second step comprises the following steps:
firstly, directly putting prepared metal powder into a spheroidizing machine correspondingly, heating and stirring, then spraying and rotating at a high speed to form a soft metal powder spheroidized particle primary product;
then sintering the soft metal powder spheroidized particle primary product in a sintering furnace and carrying out redox reaction to remove impurities so as to obtain hard metal powder spheroidized particles with different sizes;
and finally, screening the hard metal powder spheroidized particles with different sizes through a sieve to obtain the metal powder spheroidized particle finished product with the required size.
8. The process for preparing a tool tip with uniformly distributed diamonds according to claim 5, wherein in the fifth step, the post-treatment of the tool tip after demolding is: deburring, sand blasting and grinding.
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| CN110315642B (en) * | 2019-07-10 | 2022-01-04 | 广州普泰克金刚石工具有限公司 | Tool bit for gang saw by cutting granite and quartz stone with saw blade and machining process of tool bit |
| CN110523971B (en) * | 2019-09-12 | 2021-11-09 | 厦门高时实业有限公司 | Method for preparing diamond tool by adopting vacuum pre-sintering and diamond tool |
| CN115029604A (en) * | 2022-06-16 | 2022-09-09 | 北京安泰钢研超硬材料制品有限责任公司 | Silencing rock plate cutting saw blade and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1009536B (en) * | 1987-11-23 | 1990-09-12 | 冶金部第一地质勘探公司探矿技术开发公司 | Even distribution of abrasive particle in die body |
| WO2010075091A2 (en) * | 2008-12-15 | 2010-07-01 | Saint-Gobain Abrasives, Inc. | Bonded abrasive article and method of use |
| CN102233540B (en) * | 2011-04-12 | 2013-05-29 | 安泰科技股份有限公司 | Honing strip and manufacturing method thereof |
| CN202070827U (en) * | 2011-05-06 | 2011-12-14 | 福建万龙金刚石工具有限公司 | Diamond saw blade tool bit |
| CN102151904B (en) * | 2011-05-06 | 2012-11-07 | 福建万龙金刚石工具有限公司 | Diamond saw blade tool bit and production process thereof |
| ITVR20120097A1 (en) * | 2012-05-17 | 2013-11-18 | Willem Mirani | PROCEDURE FOR THE PRODUCTION OF AN ABRASIVE TOOL |
| CN205521983U (en) * | 2016-01-27 | 2016-08-31 | 博深工具股份有限公司 | Diamond saw blade |
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