CN110116376A - A kind of metallic bond grinding tool and preparation method thereof - Google Patents
A kind of metallic bond grinding tool and preparation method thereof Download PDFInfo
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- CN110116376A CN110116376A CN201910543094.XA CN201910543094A CN110116376A CN 110116376 A CN110116376 A CN 110116376A CN 201910543094 A CN201910543094 A CN 201910543094A CN 110116376 A CN110116376 A CN 110116376A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—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 incorporated in the bonding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The present invention relates to grinding tool technical fields more particularly to a kind of metallic bond grinding tool and preparation method thereof.The invention discloses a kind of metallic bond grinding tools, comprising: metallic bond and abrasive material；Metallic bond is FeAl powder and NiAl powder；The mass ratio of FeAl powder and NiAl powder is 1:1~1:3.Its medium temperature intensity can be made full use of using the mixture of FeAl powder and NiAl powder as the metallic bond of dry-type processing metallic bond grinding tool in the metallic bond grinding tool, high temperature creep strength and lightweight, the performance of minute yardstick high-temerature creep is resisted in being ground, it can preferably be combined with abrasive matrix, improve the holding power to abrasive material, prevent abrasive material from falling off too early, to change the low creep strength feature of conventional metals bonding agent, existing metallic bond grinding tool is solved when grinding temperature is excessively high, metallic bond high-temperature behavior is insufficient, holding power decline to diamond, the problem of diamond abrasive grain falls off too early.
Description
Technical field
The present invention relates to grinding tool technical fields more particularly to a kind of metallic bond grinding tool and preparation method thereof.
Background technique
In the engineering of the infrastructure such as highway, railway, hydraulic and electric engineering, bridge, tunnel and urban track traffic, to coagulation
Soil, complex formation, construction wall, stone material and micro-crystalline ceramic, the objects such as glass, which carry out the processing such as live fluting, drilling and forming, to be needed
Want a large amount of high-performance metal binding agent diamond tool.The metallic bond used in the fabrication process mainly with copper, cobalt,
Based on iron, nickel and tungsten.Although the bond strength height of metal-bonded diamond grinding tool, good moldability, long service life, are suitable for
The processing of hard brittle material.But when excessively high there are grinding temperature, metallic bond high-temperature behavior is insufficient, the holding to diamond
The problems such as power decline, diamond abrasive grain falls off too early.
Summary of the invention
The present invention provides a kind of metallic bond grinding tools and preparation method thereof, solve existing metallic bond grinding tool
When grinding temperature is excessively high, metallic bond high-temperature behavior is insufficient, declines to the holding power of diamond, diamond abrasive grain takes off too early
The problem of falling.
Its specific technical solution is as follows:
The present invention provides a kind of metallic bond grinding tools, comprising: metallic bond and abrasive material；
The metallic bond includes FeAl powder and NiAl powder；
The mass ratio of the FeAl powder and the NiAl powder is 1:1~1:3, more preferably 1:2.
It should be noted that bronze binding agent self-sharpening is poor, it is easy blocking fever, finishing difficulty；Cobalt is as strategic element
The higher high production cost for making diamond abrasive tool of price；Iron and cobalt belong to congeners, and Nature comparison is similar, and price is far below
Cobalt.
In the present invention, Fe Base Metal binding agent grinder compares metallic bond mainly with diamond tools such as Co, Cu, Mn
For, Fe has good compatibility and wetability to diamond, using Fe base as bonding agent, not only improves diamond tool
Bond strength avoids grinding tool in grinding process because of Grain Falling Off caused by deforming, and Fe element resource is abundant, and price is low
It is honest and clean.
In the present invention, NiAl and FeAl intermetallic compound is all low cost, low-density (NiAl:5.9g/cm3,FeAl:
5.6g/cm3), weight that is cost-saved, reducing tool improves specific strength and alleviates resource scarcity problem；It is all with higher
Fusing point (NiAl:1640 DEG C, FeAl:1310 DEG C), high rigidity；And all there is the B2 type body-centered cubic crystal structure of long-range order,
Existing metallic bond, and have covalent bond, performance between metal and ceramics there is excellent performances, the two such as high temperature resistant to have very well
Ground combines and concertedness.But FeAl intermetallic compound phase ratio NiAl has more excellent corrosion resistance, high-temperature oxidation resistance
Energy；And NiAl has better elevated temperature strength.Using the mixture of FeAl powder and NiAl powder as dry-type processing metal bonding
The metallic bond of agent grinding tool can make full use of its medium temperature intensity, high temperature creep strength and lightweight, and the two, which combines, just can
The good characteristic both played simultaneously, be ground in resistance minute yardstick high-temerature creep performance, can be more preferable with abrasive matrix
Ground combines, to change the low creep strength feature of conventional metals bonding agent.
Preferably, the abrasive material is diamond or cubic boron nitride CBN, more preferably diamond.
Preferably, the partial size of the FeAl powder is 10-95 μm, more preferably 18 μm~58 μm, further preferably 18 μ
M, 38 μm or 58 μm.
Preferably, the partial size of the NiAl powder be 8-86 μm, preferably 18 μm~53 μm, further preferably 18 μm,
45 μm or 53 μm.
Preferably, the granularity of the abrasive material is 35-90 mesh, more preferably 35-50 mesh, further preferably 48 mesh or 35
Mesh.
Preferably, metallic bond grinding tool further include: sintering aid；
The sintering aid includes B powder, Cr powder, Si powder, Zr powder, Ti powder, Al2O3Powder and Cu powder.
Preferably, the B diameter of particle is 5~30 μm, more preferably 5~15 μm, further preferably 10 μm or 13 μm；
The Cr diameter of particle is 5~50 μm, more preferably 20~30 μm, further preferably 25 μm or 23 μm；
The Si diameter of particle is 5~50 μm, more preferably 20~40 μm, further preferably 25 μm or 38 μm；
The Zr diameter of particle is 5~50 μm, more preferably 15~25 μm, further preferably 18 μm or 23 μm；
The Ti diameter of particle is 5~50 μm, more preferably 20~40 μm, further preferably 23 μm or 38 μm；
The Al2O3Diameter of particle be 100~500nm, more preferably 200~300nm, further preferably 300nm or
200nm；
The Cu diameter of particle is 100~500nm, more preferably 250~350nm, further preferably 300nm；
In the present invention, B powder can purify crystal boundary, refine sintering structure, improve the toughness of metallic bond；Cr powder with
Diamond forms carbon compound in combination interface, improves the bond strength between matrix and diamond, increases metallic bond
To the holding power of diamond；Si powder can reduce melting temperature simultaneously, reduce the thermal damage to diamond particles；Zr powder
The creep strength of NiAl intermetallic compound, Ti powder, Al can effectively be increased2O3Powder and Cu powder can increase metal
Binding performance between bonding agent and the sintering character for improving Fe-Al, Ni-Al compound.
Preferably, by weight, 50~92 parts of described metallic bond part, more preferably 60~90 parts are further excellent
It is selected as 87.9 parts, 78.9 parts, 69.9 parts, wherein FeAl powder is 20-50 parts preferred, and more preferably 20~35 parts, further preferably
It is 29.3 parts, 26.3 parts or 23.3 parts, NiAl powder is preferably 30-70 parts, and more preferably 40~60 parts, further preferably
58.6 parts, 52.6 parts or 46.6 parts；
5~30 parts of the abrasive material, more preferably 5~20 parts, further preferably 12 parts, 11 parts or 10 parts；
0~40 part of the sintering aid, more preferably 0~25 part, further preferably 0.1 part, 10.1 parts or 20.1 parts,
Wherein, B powder is preferably 0.1~1 part, and more preferably 0.1 part；Cr powder is preferably 1~5 part, and more preferably 2 parts；Si powder
Preferably 1~5 part, more preferably 2 parts；Zr powder is preferably 1~5 part, and more preferably 2 parts；Ti powder is preferably 1~5 part, more
Preferably 2 parts；Al2O3Powder is preferably 1~5 part, and more preferably 2 parts；Cu powder is preferably 2~12 parts, and more preferably 10 parts.
The present invention also provides a kind of preparation methods of metallic bond grinding tool, comprising the following steps:
Step 1: carrying out ball milling after metallic bond and abrasive material are mixed, obtain ball milling mixing material；
Step 2: by the ball milling mixing material cold moudling, obtaining green body；
Step 3: the green body being sintered, metallic bond grinding tool is obtained；
The metallic bond includes FeAl powder and NiAl powder.
In step 1 of the present invention, the device of ball milling is ball mill, and the revolving speed of ball mill is 150-350r/min, preferably 250
~300r/min, more preferably 250r/min, 280r/min or 300r/min；The time of ball milling be 3-10h, preferably 3~6h,
More preferably 3h, 5h or 6h；Ratio of grinding media to material is 5-15:1, preferably 10~12:1, more preferably 10:1 or 12:1；The abrading-ball and
The total volume of raw material is no more than the 2/3 of ball milling tank volume.
In step 2 of the present invention, the green density of green body is 30%~60%, preferably 40% or 58%.
In step 3 of the present invention, the temperature of the sintering is 600-1150 DEG C, preferably 800~1000 DEG C, more preferably
1000 DEG C, 800 DEG C or 850 DEG C, time of sintering is 10-40min, preferably 20~35min, more preferably 20min or
35min, the pressure of sintering are 20-100MPa, preferably 40~50MPa, more preferably 40MPa, 50MPa or 280MPa.Sintering
Mode is Ar2Or N2Hot pressed sintering under atmosphere protection, more preferably argon gas.Green body by hot-pressed sintering furnace provide thermal energy and
The high enthalpy that certain pressure generation and sintering reaction put release generates reaction, final to obtain metallic bond grinding tool.
As can be seen from the above technical solutions, the invention has the following advantages that
The present invention provides a kind of metallic bond grinding tools.Wherein, Fe Base Metal binding agent grinder compares metal bonding
Agent mainly with diamond tools such as Co, Cu, Mn for, Fe has good compatibility and wetability to diamond, utilize Fe base make
For metallic bond, the bond strength of grinding tool is not only improved, avoids grinding tool in grinding process because of Grain Falling Off caused by deformation,
And Fe element resource is abundant, cheap.The mixture of FeAl powder and NiAl powder is made in the metallic bond grinding tool
Metallic bond for dry-type processing metallic bond grinding tool can make full use of its medium temperature intensity, high temperature creep strength and lightweight
Amount, be ground in resistance minute yardstick high-temerature creep performance, can preferably be combined with abrasive matrix, raising is to the handle of abrasive material
Holding force prevents abrasive material from falling off too early, to change the low creep strength feature of conventional metals bonding agent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the micro-structure diagram for the metallic bond grinding tool that the embodiment of the present invention 1 provides；
Fig. 2 is high temperature compressive yield strength test chart under the metallic bond different temperatures that the embodiment of the present invention 1 provides.
Specific embodiment
The embodiment of the invention provides a kind of metallic bond grinding tools and preparation method thereof, for solving existing metal knot
For mixture grinding tool when grinding temperature is excessively high, metallic bond high-temperature behavior is insufficient, declines to the holding power of diamond, Buddha's warrior attendant stone mill
The problem of grain falls off too early.
It in order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below will be to of the invention real
The technical solution applied in example is clearly and completely described, it is clear that the embodiments described below are only present invention a part
Embodiment, and not all embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of all other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one
The present embodiment is the preparation of metallic bond grinding tool, is included the following steps:
FeAl powder and NiAl powder are matched in vacuum glove box by weight 1:2, and parts by weight are 87.9 parts altogether,
The parts by weight of middle FeAl are 29.3 parts, and the parts by weight of NiAl are 58.6 parts；The partial size of FeAl powder is 18 μm, the grain of NiAl powder
Diameter is 18 μm；Only for addition B element as intensified-sintered auxiliary agent, parts by weight are 0.1 part, and partial size is 10 μm；Take 12 parts of quality
Score diamond abrasive grain, granule size are 48 mesh.By above-mentioned metallic bond and abrasive material, it is put into ball mill and is sufficiently mixed, ball milling
Machine revolving speed is 250r/min, Ball-milling Time 3h, ratio of grinding media to material 10:1.It is cold that mixed ball milling mixing material is put into hard alloy
Compression mould carries out cold moudling, pressure 200MPa, and the green density of obtained tool body is 40% theoretical density；To grinding tool
Green body carries out hot pressed sintering, and sintering temperature is 850 DEG C, sintering time 20min, sintering pressure 40MPa and obtains metal bonding
Agent grinding tool.
Fig. 1 is the micro-structure diagram of metallic bond grinding tool provided in this embodiment, as shown in Figure 1, diamond and green body
It is tightly combined, idiosome dense structure.
Embodiment two
The present embodiment is the preparation of metallic bond grinding tool, is included the following steps:
FeAl powder and NiAl powder are matched in vacuum glove box by weight 1:2, and parts by weight are 78.9 parts altogether,
The parts by weight of middle FeAl are 26.3 parts, and the parts by weight of NiAl are 52.6 parts；The partial size of FeAl powder is 38 μm, the grain of NiAl powder
Diameter is 45 μm；Sintering aid parts by weight are 10.1 parts altogether, and the parts by weight of B powder are 0.1 part, and partial size is 10 μm；Cr powder
Parts by weight are 2 parts, and partial size is 25 μm；The parts by weight of Si powder are 2 parts, and partial size is 25 μm；The parts by weight of Zr powder
It is 2 parts, partial size is 18 μm；The parts by weight of Ti powder are 2 parts, and partial size is 23 μm；Al2O3The parts by weight of powder are 2 parts,
Partial size is 300nm；11 parts of mass fraction diamond abrasive grains are taken, particle size is 48 mesh.By above-mentioned metallic bond, sintering aid
And abrasive material, it is put into ball mill and is sufficiently mixed, drum's speed of rotation 280r/min, Ball-milling Time 6h, ratio of grinding media to material 10:1.It will mix
Ball milling mixing material after conjunction is put into hard alloy cold stamping die and carries out cold moudling, pressure 250MPa, obtained tool body
Green density be 58% theoretical density；Hot pressed sintering is carried out to tool body, sintering temperature is 800 DEG C, and sintering time is
35min, sintering pressure 50MPa, sintering protective atmosphere are Ar2, obtain metallic bond grinding tool.
Embodiment three
The present embodiment is the preparation method of metallic bond grinding tool, is included the following steps:
FeAl powder and NiAl powder are matched in vacuum glove box by weight 1:2, and parts by weight are 69.9 parts altogether,
The parts by weight of middle FeAl are 23.3 parts, and the parts by weight of NiAl are 46.6 parts；The partial size of FeAl powder is 58 μm, the grain of NiAl powder
Diameter is 53 μm；Sintering aid parts by weight are that the parts by weight of 20.1 parts of wherein B powder are 0.1 part altogether, and partial size is 13 μm；Cr
The parts by weight of powder are 2 parts, and partial size is 23 μm；The parts by weight of Si powder are 2 parts, and partial size is 38 μm；The weight of Zr powder
Number is 2 parts, and partial size is 23 μm；The parts by weight of Ti powder are 2 parts, and partial size is 38 μm；Al2O3The parts by weight of powder are 2
Part, partial size 200nm；The parts by weight of Cu powder are 10 parts, partial size 300nm；Take 10 parts of mass fraction Buddha's warrior attendant stone mills
Grain, particle size are 35 mesh.By above-mentioned metallic bond, sintering aid and abrasive material are put into ball mill and are sufficiently mixed, and ball mill turns
Speed is 300r/min, Ball-milling Time 5h, ratio of grinding media to material 12:1.Mixed ball milling mixing material is put into hard alloy cold stamping die
Tool carries out cold moudling, pressure 280MPa, and the green density of obtained tool body is 58% theoretical density；To tool body
Hot pressed sintering is carried out, sintering temperature is 1000 DEG C, sintering time 35min, sintering pressure 45MPa, and sintering protective atmosphere is
Ar2, obtain metallic bond grinding tool.
Example IV
The metallic bond grinding tool that embodiment one is prepared carries out high temperature compressive yield strength survey at different temperatures
Examination.
Fig. 2 is high temperature compressive yield strength test chart under the metallic bond different temperatures that embodiment 1 provides.Such as Fig. 1 institute
Show, temperature increases, and compression yield strength decline, the amount of compression increases, and it is in the wrong to show very high compression for metallic bond under low temperature
Intensity is taken, at room temperature up to 1762MPa, lower 800 DEG C of high temperature can reach 387MPa, and 1000 DEG C are 105MPa.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of metallic bond grinding tool characterized by comprising metallic bond and abrasive material；
The metallic bond is FeAl powder and NiAl powder；
The mass ratio of the FeAl powder and the NiAl powder is 1:1~1:3.
2. metallic bond grinding tool according to claim 1, which is characterized in that the abrasive material is diamond or cube nitridation
Boron.
3. metallic bond grinding tool according to claim 1, which is characterized in that the partial size of the FeAl powder is 10-95 μ
m。
4. metallic bond grinding tool according to claim 1, which is characterized in that the partial size of the NiAl powder is 8-86 μ
m。
5. metallic bond grinding tool according to claim 1, which is characterized in that the granularity of the abrasive material is 35-90 mesh.
6. metallic bond grinding tool according to claim 1, which is characterized in that further include: sintering aid；
The sintering aid includes B powder, Cr powder, Si powder, Zr powder, Ti powder, Al2O3Powder and Cu powder.
7. metallic bond grinding tool according to claim 6, which is characterized in that by weight,
50~92 parts of the metallic bond；
5~30 parts of the abrasive material；
0~40 part of the sintering aid.
8. metallic bond grinding tool according to claim 7, which is characterized in that by weight,
60~90 parts of the metallic bond；
5~20 parts of the abrasive material；
0~25 part of the sintering aid.
9. the preparation method of metallic bond grinding tool described in claim 1 to 8 any one, which is characterized in that including following
Step:
Step 1: carrying out ball milling after metallic bond and abrasive material are mixed, obtain ball milling mixing material；
Step 2: by the ball milling mixing material cold moudling, obtaining green body；
Step 3: the green body being sintered, metallic bond grinding tool is obtained；
The metallic bond includes FeAl powder and NiAl powder.
10. preparation method according to claim 9, which is characterized in that the temperature of the sintering is 600-1450 DEG C, the time
For 10-40min.
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| CN110744464A (en) * | 2019-09-29 | 2020-02-04 | 河南工业大学 | Preparation method of metal bond diamond grinding tool |
| CN112828780A (en) * | 2020-12-30 | 2021-05-25 | 江苏锋芒复合材料科技集团有限公司 | Preparation method and application method of abrasive for layered sand-planting abrasive belt |
| CN115846651A (en) * | 2022-12-16 | 2023-03-28 | 广东工业大学 | Metal polishing disk and preparation method thereof |
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| CN115846651A (en) * | 2022-12-16 | 2023-03-28 | 广东工业大学 | Metal polishing disk and preparation method thereof |
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| CN110116376B (en) | 2021-01-26 |
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