CN104842286A - Superhard grinding tool and manufacturing method thereof - Google Patents
Superhard grinding tool and manufacturing method thereof Download PDFInfo
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- CN104842286A CN104842286A CN201510273760.4A CN201510273760A CN104842286A CN 104842286 A CN104842286 A CN 104842286A CN 201510273760 A CN201510273760 A CN 201510273760A CN 104842286 A CN104842286 A CN 104842286A
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/23—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces involving a self-propagating high-temperature synthesis or reaction sintering step
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a superhard grinding tool which is composed of a binding agent and a grinding material. The binding agent comprises, by weight, 20-60 parts of Ni, Al, 8-50 parts of Cu and 20-60 parts of Ni-Cr alloy powder, wherein Ni and Al are proportioned according to a molar ratio of 3:1 or 1:1, and the grinding material is diamond which is 40-100% in concentration and 30/40-325-400 meshes in granularity. In addition, the invention further discloses a manufacturing method for the superhard grinding tool. The binding agent and the grinding material namely the diamond are taken as raw materials, the superhard grinding tool is manufactured through a method of compositing self-propagating and soldering, thereby being high in binding strength, good in performance, low in cost and small in thermal damage to diamond, high-speed and long-time grinding can be realized, needs on machining are met, and the superhard grinding tool has the advantages of high binding resistance, high hardness, grinding resistance, high sharpness and long service life. The manufacturing method has the advantages of simple process, pollution freeness, low energy consumption, quickness and low cost.
Description
Technical field
The present invention relates to grinding tool technical field, specifically, relate to a kind of super-hard abrasive tool and preparation method thereof.
Background technology
Plating and sintering are traditional super hard abrasive tool fabrication methods, due to the bond strength between super hard abrasive and matrix and adamantine go out sword is low that the service efficiency of these two kinds of instruments and life-span are restricted.Doctor goes out sword due to high abrasive material and high bond strength obtains extensive concern in recent years.Brazing filler metal alloy fusing and capillarity in brazing process, make the tight trapping gold hard rock of alloy, between diamond and brazing filler metal alloy, form strong chemical bond simultaneously, substantially increase adamantine bond strength and adamantine height of protrusion, and then improve cutting ability and the self-sharpening of instrument, be particularly suitable for High speed Pyrometer processing.But these manufacturing process have or high pollution or need the equipment such as hot pressing, high vacuum or high-purity gas protection, and complex process, cost are high, energy consumption is large;
SHS technology (Self-propagating High Temperature Synthesis, be called for short SHS technology, also conbustion synthesis is claimed) be after external energy brings out topochemical reaction (lighting), utilize chemical reaction self-heat generation, make reaction continue to carry out, synthesize new material simultaneously.Outside resources is few, fabricated in situ, product purity are high and the metastable equal advantage in easy acquisitions centre obtains and develops rapidly and commercial Application because it consumes for this technology.Therefore, if self-propagating-soldering can be combined, utilize reaction heat melted alloy solder, this not only can economize energy, but also utilize self-propagating reaction feature (completing reaction in several seconds kinds) fast, realize the quick manufacture of diamond tool, reduce diamond tool manufacturing cost.And utilize the effect of soldering to make to produce enhanced primary treatment between superhard material and bonding agent, substantially increase the bond strength of grinding tool.
Summary of the invention
The object of the present invention is to provide a kind of super-hard abrasive tool and preparation method thereof, super-hard abrasive tool bond strength of the present invention is high, and performance is good, and cost is low, low to diamond fire damage, bending strength is high, can realize grinding for a long time at a high speed, meet the requirement of processing, there is hardness high, resistance to grinding, sharpness is strong, the advantage of long service life; The advantages such as the preparation method of super-hard abrasive tool of the present invention has that technique is simple, pollution-free, energy consumption is low, quick and low cost.
For realizing above object, the present invention adopts following technical scheme:
A kind of super-hard abrasive tool, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 3:1 or 1:1 proportioning in molar ratio, and its parts by weight are 20-60 part, and the parts by weight of Cu powder are 8-50 part, Ni-Cr alloy powder parts by weight are 20-60 part, abrasive material is diamond, and concentration is 40-100%, and granularity is 30/40-325/400 order.
Preferably, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 3:1 or 1:1 proportioning in molar ratio, and its parts by weight are 35-55 part altogether, and the parts by weight of Cu powder are 12-30 part, Ni-Cr alloy powder parts by weight are 30-50 part, abrasive material is diamond, and concentration is 50-85%, and granularity is 50/60-170/200 order.
Preferably, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 3:1 proportioning in molar ratio, and its parts by weight are 41 parts altogether, and the parts by weight of Cu powder are 14 parts, Ni-Cr alloy powder parts by weight are 38 parts, abrasive material is diamond, and concentration is 75%, and granularity is 80/100 order.
More preferably, the purity of described Ni, Al, Ni-Cr alloy powder is all higher than 99.9%, and granularity is all less than 75 μm, and Cu powder purity is higher than 99.9%, and granularity is less than 45 μm.
A preparation method for super-hard abrasive tool, comprises the steps:
Step (1), Ni, Al, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material;
Step (3), grinding tool step 2 obtained are prepared material and are put into cold stamping die cold moudling, obtain tool body;
Step (4), carry out heating initiation self-propagating-soldering recombination reaction by the tool body obtained step 3, tool body relies on the self-propagating-soldering recombination reaction of self or the densified of tool body of having pressurizeed at the end of self-propagating-soldering recombination reaction, and obtains super-hard abrasive tool.
Preferably, in step (3), the green density of tool body is 40-60% solid density.
Preferably, described in step (1) and (2), drum's speed of rotation is 150 ~ 250r/min, and Ball-milling Time 3 ~ 6h, ratio of grinding media to material is 5-10:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume.
Preferably, described in step (1) and (2), drum's speed of rotation is 180 ~ 220r/min, and Ball-milling Time 4 ~ 5h, ratio of grinding media to material is 6-8:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume.
Preferably, described in step (3), cold stamping die is Cr12MoV or carbide alloy cold stamping die, and pressure is not less than 30MPa.
More preferably, the mode of heating described in step (4) is hot pressing furnace or laser or heats tungsten filament or electric spark heating, and described mode of heating comprises but is not only confined to above-mentioned mode of heating.
Compared with prior art, super-hard abrasive tool of the present invention has following advantage:
(1) super-hard abrasive tool of the present invention adopts bonding agent and diamond abrasive to be raw material, obtained by self-propagating reaction, define firmly enhanced primary treatment layer between diamond and self-propagating reaction product, have that bond strength is high, performance good, cost is low, to advantages such as diamond fire damage are low.
(2) bending strength of super-hard abrasive tool of the present invention is high, can realize grinding for a long time at a high speed, meet the requirement of processing.
(3) super-hard abrasive tool of the present invention has that high, the resistance to grinding of hardness, sharpness are strong, the advantage of long service life.
(4) preparation method of super-hard abrasive tool of the present invention have that technique is simple, pollution-free, energy consumption is low, the advantage such as quick and low cost.
Accompanying drawing explanation
Fig. 1 is super-hard abrasive tool cross section of the present invention microstructure;
Fig. 2 is diamond and self-propagating-soldering recombination reaction product interfacial microstructure in super-hard abrasive tool of the present invention;
Fig. 3 is the XRD collection of illustrative plates of super-hard abrasive tool of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
A kind of super-hard abrasive tool, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 3:1 proportioning in molar ratio, and its parts by weight are 20 parts altogether, and the parts by weight of Cu powder are 8 parts, Ni-Cr alloy powder parts by weight are 60 parts, abrasive material is diamond, and concentration is 100%, and granularity is 30/40 order.
A preparation method for super-hard abrasive tool, comprises the steps:
Step (1), Ni, the Al of above-mentioned each component, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder, wherein, described drum's speed of rotation is 150r/min, Ball-milling Time 3h, ratio of grinding media to material is 5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material, wherein, described drum's speed of rotation is 150r/min, Ball-milling Time 3h, ratio of grinding media to material is 5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (3), grinding tool step 2 obtained are prepared material and are put into the cold moudling of Cr12MoV cold stamping die, and pressure is 30MPa, shaping acquisition tool body, and the green density of tool body is 40% solid density.；
Step (4), carry out heating initiation from climing-soldering recombination reaction by the tool body obtained step 3, wherein mode of heating is hot pressing furnace heating, tool body relies on the self-propagating-soldering recombination reaction of self to complete the densified of tool body, and obtain super-hard abrasive tool.
Embodiment 2
A kind of super-hard abrasive tool, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 3:1 proportioning in molar ratio, and its parts by weight are 55 parts altogether, and the parts by weight of Cu powder are 12 parts, Ni-Cr alloy powder parts by weight are 30 parts, abrasive material is diamond, and concentration is 50%, and granularity is 50/60 order.
A preparation method for super-hard abrasive tool, comprises the steps:
Step (1), Ni, the Al of above-mentioned each component, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder, wherein, described drum's speed of rotation is 170r/min, Ball-milling Time 3.5h, ratio of grinding media to material is 6.5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material, wherein, described drum's speed of rotation is 170r/min, Ball-milling Time 3.5h, ratio of grinding media to material is 6.5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (3), grinding tool step 2 obtained are prepared material and are put into the cold moudling of carbide alloy cold stamping die, and pressure is 35MPa, shaping acquisition tool body, and the green density of tool body is 45% solid density.
Step (4), carry out heating initiation from climing-soldering recombination reaction by the tool body obtained step 3, wherein mode of heating is LASER HEATING, tool body relies on the self-propagating-soldering recombination reaction of self to complete the densified of tool body, and obtain super-hard abrasive tool.
Embodiment 3
A kind of super-hard abrasive tool, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 3:1 proportioning in molar ratio, and its parts by weight are 41 parts altogether, and the parts by weight of Cu powder are 14 parts, Ni-Cr alloy powder parts by weight are 38 parts, abrasive material is diamond, and concentration is 75%, and granularity is 80/100 order.
A preparation method for super-hard abrasive tool, comprises the steps:
Step (1), Ni, the Al of above-mentioned each component, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder, wherein, described drum's speed of rotation is 200r/min, Ball-milling Time 4.5h, ratio of grinding media to material is 7.5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material, wherein, described drum's speed of rotation is 200r/min, Ball-milling Time 4.5h, ratio of grinding media to material is 7.5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (3), grinding tool step 2 obtained are prepared material and are put into the cold moudling of Cr12MoV cold stamping die, and pressure is 40MPa, shaping acquisition tool body, and the green density of tool body is 50% solid density.
Step (4), carry out heating initiation self-propagating-soldering recombination reaction by the tool body obtained step 3, wherein mode of heating is hot pressing furnace heating, tool body relies on the self-propagating-soldering recombination reaction of self to complete the densified of tool body, and obtain super-hard abrasive tool.
Embodiment 4
A kind of super-hard abrasive tool, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 1:1 proportioning in molar ratio, and its parts by weight are 35 parts altogether, and the parts by weight of Cu powder are 30 parts, Ni-Cr alloy powder parts by weight are 50 parts, abrasive material is diamond, and concentration is 85%, and granularity is 170/200 order.
A preparation method for super-hard abrasive tool, comprises the steps:
Step (1), Ni, the Al of above-mentioned each component, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder, wherein, described drum's speed of rotation is 220r/min, Ball-milling Time 5h, ratio of grinding media to material is 8.5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material, wherein, described drum's speed of rotation is 220r/min, Ball-milling Time 5h, ratio of grinding media to material is 8.5:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (3), grinding tool step 2 obtained are prepared material and are put into the cold moudling of carbide alloy cold stamping die, and pressure is 45MPa, shaping acquisition tool body, and the green density of tool body is 55% solid density;
Step (4), carry out heating initiation self-propagating-soldering recombination reaction by the tool body obtained step 3, wherein mode of heating is heating tungsten filament, tool body relies on the self-propagating-soldering recombination reaction of self to complete the densified of tool body, and obtain super-hard abrasive tool.
Embodiment 5
A kind of super-hard abrasive tool, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, wherein said Ni, Al be 1:1 proportioning in molar ratio, and the parts by weight that its parts by weight are 60%, Cu powder are altogether 30%, Ni-Cr alloy powder parts by weight are 20%, abrasive material is diamond, and concentration is 40%, and granularity is 325/400 order.
A preparation method for super-hard abrasive tool, comprises the steps:
Step (1), Ni, the Al of above-mentioned each component, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder, wherein, described drum's speed of rotation is 250r/min, Ball-milling Time 6h, ratio of grinding media to material is 10:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material, wherein, described drum's speed of rotation is 250r/min, Ball-milling Time 6h, ratio of grinding media to material is 10:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume;
Step (3), grinding tool step 2 obtained are prepared material and are put into the cold moudling of Cr12MoV cold stamping die, and pressure is 50MPa, shaping acquisition tool body, and the green density of tool body is 60% solid density;
Step (4), carry out heating initiation from climing-soldering recombination reaction by the tool body obtained step 3, wherein mode of heating is electric spark heating, tool body has pressurizeed the densified of tool body at the end of self-propagating-soldering recombination reaction, and obtains super-hard abrasive tool.
Detect embodiment of the present invention 1-5, test result is as table 1:
Table 1 is the bending strength test result of embodiment 1-5
From above table 1, super-hard abrasive tool hardness of the present invention is high, and bending strength is large, especially best with the bending strength of embodiment 3.
Super-hard abrasive tool of the present invention have employed the preparation method of self-propagating-soldering, and the contrast of super-hard abrasive tool prepared by employing self-propagating-soldering and conventional sintering instrument and each parameter of doctor is as shown in table 2:
Table 2 self-propagating-soldering is prepared super-hard abrasive tool and is compared with sintering process and each parameter of method for brazing
From above-mentioned table 2, the advantages such as self-propagating-soldering of the present invention is prepared super-hard abrasive tool and had that technique is simple, pollution-free, energy consumption is low, quick and low cost.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred embodiment should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a super-hard abrasive tool, it is characterized in that, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, and described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, and wherein said Ni, Al be 3:1 or 1:1 proportioning in molar ratio, and its parts by weight are 20-60 part, the parts by weight of Cu powder are 8-50 part, and Ni-Cr alloy powder parts by weight are 20-60 part, and abrasive material is diamond, concentration is 40-100%, and granularity is 30/40-325/400 order.
2. super-hard abrasive tool as described in the appended claim 1, it is characterized in that, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, and described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, and wherein said Ni, Al be 3:1 or 1:1 proportioning in molar ratio, and its parts by weight are 35-55 part altogether, the parts by weight of Cu powder are 12-30 part, and Ni-Cr alloy powder parts by weight are 30-50 part, and abrasive material is diamond, concentration is 50-85%, and granularity is 50/60-170/200 order.
3. super-hard abrasive tool as stated in claim 2, it is characterized in that, the raw material components of this super-hard abrasive tool comprises bonding agent and abrasive material, and described bonding agent comprises Ni, Al, Cu, Ni-Cr alloy powder, and wherein said Ni, Al be 3:1 proportioning in molar ratio, and its parts by weight are 41 parts altogether, the parts by weight of Cu powder are 14 parts, and Ni-Cr alloy powder parts by weight are 38 parts, and abrasive material is diamond, concentration is 75%, and granularity is 80/100 order.
4. super-hard abrasive tool as described in as arbitrary in claims 1 to 3, it is characterized in that, the purity of described Ni, Al, Ni-Cr alloy powder is all higher than 99.9%, and granularity is all less than 75 μm, and Cu powder purity is higher than 99.9%, and granularity is less than 45 μm.
5. a preparation method for super-hard abrasive tool, is characterized in that, comprises the steps:
Step (1), Ni, Al, Cu, Ni-Cr alloy powder put into after proportionally weighing ball mill fully mixing obtain abrasive tools bond powder;
Step (2), abrasive tools bond powder step one obtained mix with diamond abrasive ball milling, obtain grinding tool and prepare material;
Step (3), grinding tool step 2 obtained are prepared material and are put into cold stamping die cold moudling, obtain tool body;
Step (4), carry out heating initiation self-propagating-soldering recombination reaction by the tool body obtained step 3, tool body relies on the self-propagating-soldering recombination reaction of self or the densified of tool body of having pressurizeed at the end of self-propagating-soldering recombination reaction, and obtains super-hard abrasive tool.
6. the preparation method of super-hard abrasive tool as claimed in claim 5, is characterized in that: in step (3), the green density of tool body is 40-60% solid density.
7. the preparation method of super-hard abrasive tool as claimed in claim 5, it is characterized in that: described in step (1) and (2), drum's speed of rotation is 150 ~ 250r/min, Ball-milling Time 3 ~ 6h, ratio of grinding media to material is 5-10:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume.
8. the preparation method of super-hard abrasive tool as claimed in claim 5, it is characterized in that: described in step (1) and (2), drum's speed of rotation is 180 ~ 220r/min, Ball-milling Time 4 ~ 5h, ratio of grinding media to material is 6-8:1, and abrading-ball and raw material cumulative volume are no more than 2/3 of ball grinder volume.
9. the preparation method of super-hard abrasive tool as claimed in claim 5, is characterized in that: described in step (3), cold stamping die is Cr12MoV or carbide alloy cold stamping die, and pressure is not less than 30MPa.
10. the preparation method of super-hard abrasive tool as claimed in claim 5, is characterized in that: the mode of heating described in step (4) is hot pressing furnace or laser or heats tungsten filament or electric spark heating.
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| CN106378715A (en) * | 2016-10-10 | 2017-02-08 | 南京航空航天大学 | Self-propagating diamond carving grinding head and manufacturing method thereof |
| CN106392907A (en) * | 2016-10-27 | 2017-02-15 | 南昌大学 | Method for quickly preparing dense and superhard grinding and drilling tool based on self-propagating reaction |
| CN107116490A (en) * | 2017-05-05 | 2017-09-01 | 江苏锋泰工具有限公司 | The SHS preparation methods of multi-block type diamond segment |
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| CN112659003B (en) * | 2020-12-16 | 2022-06-03 | 郑州磨料磨具磨削研究所有限公司 | Self-sharpening superhard material grinding wheel and preparation method thereof |
| CN112659003A (en) * | 2020-12-16 | 2021-04-16 | 郑州磨料磨具磨削研究所有限公司 | Self-sharpening superhard material grinding wheel and preparation method thereof |
| CN113561074A (en) * | 2021-07-29 | 2021-10-29 | 惠州捷姆复合材料有限公司 | Preparation method and device of diamond grinding head and base material thereof |
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| CN113927495B (en) * | 2021-10-20 | 2023-02-28 | 山东大学 | Preparation process of self-sharpening metal binding agent diamond abrasive layer |
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| CN114193339B (en) * | 2021-12-02 | 2024-04-19 | 广东工业大学 | Metal bond diamond grinding tool and preparation method thereof |
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