CN106041760A - Self-sharpening diamond grinding wheel and preparation method thereof - Google Patents
Self-sharpening diamond grinding wheel and preparation method thereof Download PDFInfo
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- CN106041760A CN106041760A CN201610395488.1A CN201610395488A CN106041760A CN 106041760 A CN106041760 A CN 106041760A CN 201610395488 A CN201610395488 A CN 201610395488A CN 106041760 A CN106041760 A CN 106041760A
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- China
- Prior art keywords
- self
- emery wheel
- abrasive material
- diamond
- sharpening
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Classifications
-
- 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
-
- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—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
Abstract
The invention discloses a self-sharpening diamond grinding wheel and a preparation method thereof. The diamond grinding wheel comprises material grinding blocks. Raw materials of the material grinding blocks include a metal bond, MoS2, an SG grinding material, diamond and an additive. The additive accounts for 1%-10% by mass of the raw materials of the material grinding blocks. The additive is prepared from the following raw materials including, by mass, 25%-35% of Bi2O3, 25%-35% of B2O3, 5%-10% of ZnO, 5%-10% of SiO2, 5%-10% of Al2O3, 1%-5% of CaF2, 1%-5% of Na2CO3, 1%-5% of Li2CO3 and 1%-5% of MgCO3. The diamond grinding wheel is high in self-sharpening performance and strength, is exquisite in structure, is uniformly consumed in the grinding process, does not need dressing during using and always maintains good grinding force, and thus the problems of long dressing time and high dressing cost of existing diamond grinding wheels are fundamentally solved.
Description
Technical field
The invention belongs to superhard material products technical field, be specifically related to a kind of self-sharpening diamond emery wheel, the most also relate to
And the preparation method of a kind of self-sharpening diamond emery wheel.
Background technology
After the self-sharpening of emery wheel refers to the abrasive particle blunt of emery wheel, grinding force increases the most therewith, causes grain breakage or comes off,
Again sharp cutting edge is exposed.Superhard material products emery wheel in grinding process, the abrasive particle of emery wheel in friction, under squeezing action,
Its corner angle gradually rounding rust, abrasive dust usually caulked, at wheel face, makes wheel face block, and finally makes emery wheel lose grinding
Ability.At this moment, skidding can be produced between emery wheel and workpiece, and vibration may be caused and noise occurs, make under grinding efficiency
Fall, surface roughness is deteriorated.Simultaneously because grinding force and the increase of grinding heat, working deformation can be caused and affect grinding accuracy,
Also can make grinding skin that burn and fine cracks occur time serious.Now it is necessary to emery wheel is repaired with dresser.Emery wheel
Finishing, it is generally required to dozens of minutes even a few hours, has had a strong impact on productive temp, reduces production efficiency；Dresser price is held high
Expensive, expend huge cost；In high-precision grinding, lathe also needs to install additional online trimming device, also substantially increases lathe
Design difficulty and manufacturing cost.
In prior art, CN103831740A discloses a kind of ceramic metal mixed binding for preparing skive
Agent, is made up of the raw material of following weight ratio: 663 bronze powder 60-80%, ceramics 20-40%, described ceramics is by following weight
The raw material mixed smelting of ratio prepares: silicon dioxide 45-60%, boron oxide 20-30%, potassium oxide 10-15%, magnesium oxide 5-
10%, calcium oxide 2-5%.Sieve after preparing the raw material mixing and ball milling of ceramics prepared mixed-powder, then by mixed-powder in
1700 DEG C of melting 3h, chilling obtains devitrified glass block, and ball mill crushing crosses 325 mesh standard sieves, prepares ceramics.By 663 bronze
Ceramic metal combined binder is stood to obtain after powder and ceramics ball milling；After this combined binder is mixed with diamond abrasive ball milling
Add pore creating material, obtain emery wheel compound；Emery wheel compound is placed in after cold compaction obtains base substrate in mould and carries out vacuum hotpressing burning again
Knot, obtains combined binder emery wheel.
Above-mentioned skive had both maintained the characteristic that sharpness is good, self-sharpening is good of Technique of Vitrified Diamond Wheels,
There is again the advantage that rigidity is high, shape retention is good of metal anchoring agent diamond wheel；But, it is for the raising of self-sharpening
It is only limitted to make finishing gap improve 25%-50%, still cannot solve the crushing time long, the problem that finishing cost is high.
Summary of the invention
It is an object of the invention to provide a kind of self-sharpening diamond emery wheel, be excused from a college course whole during use, fundamentally solve
Diamond grinding wheel dressing time length, the problem that finishing cost is high.
Second object of the present invention is to provide the preparation method of a kind of self-sharpening diamond emery wheel.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of self-sharpening diamond emery wheel, including abrasive material block, the raw material of described abrasive material block comprises metallic bond, MoS2、
SG abrasive material, diamond and additive；The weight/mass percentage composition shared in the raw material of abrasive material block of described additive be 1%～
10%；
Described additive is made up of the raw material of following mass percent: Bi2O325%～35%, B2O325%～35%,
ZnO5%～10%, SiO25%～10%, Al2O35%～10%, CaF21%～5%, Na2CO31%～5%, Li2CO3
1%～5%, MgCO31%～5%.
Described additive is made up through the quick quick cooling method of high melt of above-mentioned raw materials.Described additive is prefabricated.
Granularity D90 < the 200nm of additive.
Preferably, described additive is to be prepared by the method comprised the following steps:
1) Bi of formula ratio is taken2O3、B2O3、ZnO、SiO2、Al2O3、Na2CO3、Li2CO3、MgCO3Mixing, is warming up to 1200
～1400 DEG C and be incubated 1～3h, obtain mixture；
2) by step 1) gained mixture is cooled to 850～950 DEG C, adds the CaF of formula ratio2Mixing, is incubated 1～2h,
Obtain sinter；
3) by step 2) gained sinter chilling, after be crushed to granularity D90 < 200nm to obtain final product.
Step 1) in, the speed of described intensification is 10 DEG C/min.Mixed raw material is put in silica crucible, is placed in height
Temperature resistance furnace heats.
Step 2) in, the speed of described cooling is 5 DEG C/min.
Step 3) in, described chilling refers to gained sinter is placed in water chilling, obtains lump material.Described water is preferred
The water of room temperature.
Described pulverizing refers to mix gained lump material with ethanol carry out ball milling.Lump material is loaded ball together with ethanol
In grinding jar on high energy ball mill ball milling；It is milled to the granularity D90 < 200nm of gained powder；Preferably, the time of ball milling is 40
～60h.
Described metallic bond is made up of the component of following parts by weight: Cu 25～45 parts, Sn 5～20 parts, Co 20～
35 parts, Al 3～10 parts, Fe 1～5 parts, Cr 1～3 parts, Ti 1～3 parts.Above-mentioned metal component is metal powder.Described metal
Bonding agent weight/mass percentage composition shared by the raw material of abrasive material block is 66%～91%.
In the raw material of described abrasive material block, SG abrasive material is (2～6) with the mass ratio of diamond: (5～15).Described SG abrasive material
The weight/mass percentage composition shared in the raw material of abrasive material block with diamond is 7%～21%.Wherein, described SG abrasive material be a kind of by
The alumina abrasive through special seeded gel system sintering of company of Saint-Gobain exploitation.
MoS2In abrasive material block raw material, shared weight/mass percentage composition is 1%～3%.
Preferably, in described self-sharpening diamond emery wheel, described abrasive material block is made up of the raw material of following mass percent:
Cu25%～45%, Sn 5%～20%, Co 20%～35%, Al 3%～10%, Fe 1%～5%, Cr 1%～3%,
Ti 1%～3%, MoS21%～3%, SG abrasive material 2%～6%, diamond 5%～15%, additive 1%～10%.
Described self-sharpening diamond emery wheel, also includes that grinding wheel base body, described abrasive material block are bonded on grinding wheel base body.
The self-sharpening diamond emery wheel of the present invention, can be the emery wheel block of abrasive material block formation itself, it is also possible to be by abrasive material
The composite wheel that block and grinding wheel base body are compounded to form.
The preparation method of a kind of above-mentioned self-sharpening diamond emery wheel, comprises the following steps:
A) metallic bond, MoS are taken2Powder, SG abrasive material, diamond and additive mixing, obtain compound；
B) step a) gained compound is placed in mould compacting, obtains blank；
C) step b) gained blank is placed in mould, is warming up to 580～620 DEG C and is incubated 4～10min and is sintered,
Rear chilling, obtains described abrasive material block.
In step a), described mixing is to be placed in raw material in three-dimensional material mixer to carry out batch mixing；The time of batch mixing is 2～4h.
In step b), the pressure of described compacting is 150～200MPa.The preferred steel die of mould used by compacting；Compacting
Equipment preferred oil press used.
In step c), described intensification refer to first with the heating rate of 100 DEG C/min be warming up to 350～450 DEG C and be incubated 1～
After 3min, then it is warming up to 580～620 DEG C with the heating rate of 50 DEG C/min.First it is warming up to 350～450 DEG C and the effect being incubated
It is to promote the Sn of low melting point to be completely melt to carry out alloying reaction.
The preferred graphite jig of mould in step c), used by sintering；The preferred pressing sintering of equipment used by sintering.Sintering
Process can be carried out in air atmosphere.After being incubated at 580～620 DEG C, mould is placed in water chilling.The preferred room of described water
The water of temperature.
The preparation method of described self-sharpening diamond emery wheel, also includes being bonded on grinding wheel base body gained abrasive material block,
Obtain self-sharpening diamond emery wheel.
The self-sharpening diamond emery wheel of the present invention, the raw material of abrasive material block includes metallic bond, MoS2Powder, SG abrasive material, gold
Hard rock and additive, described additive is by a certain amount of Bi2O3、B2O3、ZnO、SiO2、Al2O3、Na2CO3、Li2CO3、MgCO3With
CaF2Make；This additive has microstructure, and its intensity is more than 200MPa, and the intensity difference of combined with metal dose is away from less；Should
The refractoriness of additive is less than 500 DEG C, far below the sintering temperature of metal bonding agent extra hard material goods, is in molten when sintering
Melt state, radially distribute between skeleton particle after sintering, be uniformly dispersed, organize exquisiteness.
In the self-sharpening diamond emery wheel of the present invention, the linear expansion coefficient of additive therefor mates with diamond preferably,
The radiation distribution in uniform submicron order disperse in emery wheel, less on the impact of emery wheel bulk strength, metal can be significantly improved and combine
The self-sharpening of agent skive and service life；MoS2Powder stable chemical performance, and between metal, adhesive force is very strong, has lubrication
Effect, also acts as anti-oxidation effect in powder；SG abrasive material plays occupy-place and assistant grinding effect in emery wheel, it is to avoid emery wheel blocks up
Plug, can improve the shape retention of skive simultaneously, it is to avoid grinding wheel shape precision is lost.The self-sharpening diamond of the present invention
Emery wheel, abrasive material block uses metallic bond, SG abrasive material, diamond and above-mentioned additive to be raw material, and self-sharpening is high, intensity is high, adds
Work efficiency rate is high, tissue exquisiteness, consumes uniformly at grinding process medium plain emery wheel, is excused from a college course whole during the use of whole life cycle,
And in grinding process, remain good grinding force, fundamentally solve diamond grinding wheel dressing time length, finishing cost
High problem, has good economic benefit.
Further, the self-sharpening diamond emery wheel of the present invention, use a certain amount of Cu powder, Sn powder, Co powder, Al powder, Fe
The metallic bond that powder, Cr powder, Ti powder are re-dubbed；In this metallic bond, the activity of Al powder is higher, easily aoxidizes, at sintering
During can oxygen reaction preferentially and in air, thus avoid the oxidation of other metal powder and diamond, make sintering process exist
Air atmosphere can be carried out, greatly reduce cost；Cr powder, Ti powder can form carbide with abrasive material, improve bonding agent gold-plated
The adhesion strength of hard rock.
The preparation method of the self-sharpening diamond emery wheel of the present invention, is by after each mixing raw materials, is first pressed into blank and reburns
Knot is made；After hot pressed sintering terminates, mould is immediately placed in chilling in water, can prevent excessive grain from growing up, make gained emery wheel
Tissue exquisiteness, thus obtain the skive that intensity is high, self-sharpening is high, and make gained emery wheel consume in grinding process all
Even.This preparation method technique is simple, and easy to operate, sintering temperature is low, low cost and be prone to Automated condtrol, is suitable for extensive work
Industry metaplasia is produced.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
In detailed description of the invention, the size and dimension of mould therefor selects as required.Each former used by additive
Material component is analytical pure.
Embodiment 1
The self-sharpening diamond emery wheel of the present embodiment, including grinding wheel base body and abrasive material block, described abrasive material block is by following quality
The raw material of percentage ratio is made: Cu 28%, Sn 12%, Co 30%, Al 5%, Fe 3%, Cr 2%, Ti 2%, MoS2
3%, SG abrasive material 2%, diamond 10%, additive 3%.
Described additive is made up of the raw material of following mass percent: Bi2O335%, B2O335%, ZnO 10%, SiO2
5%, Al2O33%, Na2CO32%, Li2CO34%, MgCO32%, CaF24%.
The preparation method of described additive, comprises the following steps:
1) Bi of formula ratio is taken2O3、B2O3、ZnO、SiO2、Al2O3、Na2CO3、Li2CO3、MgCO3After mix homogeneously, put into
In silica crucible, it is placed in high temperature resistance furnace, being heated to 1250 DEG C and being incubated 2h with 10 DEG C/min, obtains mixture；
2) by step 1) gained mixture is cooled to 850 DEG C with the speed of 5 DEG C/min, adds the CaF of formula ratio2And stir
Mixing, is incubated 2h, obtains sinter；
3) by step 2) gained sinter pours chilling in cold water (room temperature) into, obtains lump material；The lump material that will obtain
Load in ball grinder ball milling 60h on high energy ball mill together with ethanol, obtain granularity D90 < powder of 200nm, be described in add
Add agent.
The preparation method of the self-sharpening diamond emery wheel of the present embodiment, comprises the following steps:
A) the Cu powder of formula ratio, Sn powder, Co powder, Al powder, Fe powder, Cr powder, Ti powder, MoS are taken2Powder, SG abrasive material, diamond and
Additive, loads batch mixing 2h in three-dimensional material mixer, obtains compound；
B) step a) gained compound is loaded in steel die, plow material, strike off, be placed on hydraulic press the pressure with 150MPa
Power is suppressed, and obtains blank；
C) step b) gained blank is loaded in graphite jig, in air atmosphere, be placed in pressing sintering and burn
Knot, particularly as follows: first to 400 DEG C and be incubated 2min with the ramp of 100 DEG C/min, promote the Sn of low melting point be completely melt into
Row alloying reaction, then to 600 DEG C and is incubated 8min with the ramp of 50 DEG C；After insulation, mould is placed in cold water
Chilling in (room temperature), obtains described abrasive material block；
D) step c gained abrasive material block is bonded on grinding wheel base body, obtains described self-sharpening diamond emery wheel.
Embodiment 2
The self-sharpening diamond emery wheel of the present embodiment, including grinding wheel base body and abrasive material block, described abrasive material block is by following quality
The raw material of percentage ratio is made: Cu 44%, Sn 10%, Co 25%, Al 3%, Fe 2%, Cr 1%, Ti 3%, MoS2
1%, SG abrasive material 5%, diamond 5%, additive 1%.
Described additive is made up of the raw material of following mass percent: Bi2O325%, B2O340%, ZnO 5%, SiO2
2%, Al2O38%, Na2CO31%, Li2CO33%, MgCO35%, CaF21%.
The preparation method of described additive, comprises the following steps:
1) Bi of formula ratio is taken2O3、B2O3、ZnO、SiO2、Al2O3、Na2CO3、Li2CO3、MgCO3After mix homogeneously, put into
In silica crucible, it is placed in high temperature resistance furnace, being heated to 1300 DEG C and being incubated 1h with 10 DEG C/min, obtains mixture；
2) by step 1) gained mixture is cooled to 850 DEG C with the speed of 5 DEG C/min, adds the CaF of formula ratio2And stir
Mixing, is incubated 2h, obtains sinter；
3) by step 2) gained sinter pours chilling in cold water (room temperature) into, obtains lump material；The lump material that will obtain
Load in ball grinder ball milling 50h on high energy ball mill together with ethanol, obtain granularity D90 < powder of 200nm, be described in add
Add agent.
The preparation method of the self-sharpening diamond emery wheel of the present embodiment, comprises the following steps:
A) the Cu powder of formula ratio, Sn powder, Co powder, Al powder, Fe powder, Cr powder, Ti powder, MoS are taken2Powder, SG abrasive material, diamond and
Additive, loads batch mixing 3h in three-dimensional material mixer, obtains compound；
B) step a) gained compound is loaded in steel die, plow material, strike off, be placed on hydraulic press the pressure with 200MPa
Power is suppressed, and obtains blank；
C) step b) gained blank is loaded in graphite jig, in air atmosphere, be placed in pressing sintering and burn
Knot, particularly as follows: first to 450 DEG C and be incubated 1min with the ramp of 100 DEG C/min, promote the Sn of low melting point be completely melt into
Row alloying reaction, then to 580 DEG C and is incubated 10min with the ramp of 50 DEG C；After insulation, mould is placed in cold water
Chilling in (room temperature), obtains described abrasive material block；
D) step c gained abrasive material block is bonded on grinding wheel base body, obtains described self-sharpening diamond emery wheel.
Embodiment 3
The self-sharpening diamond emery wheel of the present embodiment, including grinding wheel base body and abrasive material block, described abrasive material block is by following quality
The raw material of percentage ratio is made: Cu 25%, Sn 5%, Co 30%, Al 7%, Fe 1%, Cr 2%, Ti 1%, MoS22%,
SG abrasive material 6%, diamond 15%, additive 6%.
Described additive is made up of the raw material of following mass percent: Bi2O330%, B2O325%, ZnO 19%, SiO2
10%, Al2O32%, Na2CO35%, Li2CO31%, MgCO33%, CaF25%.The preparation method of described additive is with real
Execute example 1.
The preparation method of the self-sharpening diamond emery wheel of the present embodiment, comprises the following steps:
A) the Cu powder of formula ratio, Sn powder, Co powder, Al powder, Fe powder, Cr powder, Ti powder, MoS are taken2Powder, SG abrasive material, diamond and
Additive, loads batch mixing 4h in three-dimensional material mixer, obtains compound；
B) step a) gained compound is loaded in steel die, plow material, strike off, be placed on hydraulic press the pressure with 170MPa
Power is suppressed, and obtains blank；
C) step b) gained blank is loaded in graphite jig, in air atmosphere, be placed in pressing sintering and burn
Knot, particularly as follows: first to 400 DEG C and be incubated 1min with the ramp of 100 DEG C/min, promote the Sn of low melting point be completely melt into
Row alloying reaction, then to 620 DEG C and is incubated 4min with the ramp of 50 DEG C；After insulation, mould is placed in cold water
Chilling in (room temperature), obtains described abrasive material block；
D) step c gained abrasive material block is bonded on grinding wheel base body, obtains described self-sharpening diamond emery wheel.
Embodiment 4
The self-sharpening diamond emery wheel of the present embodiment, including grinding wheel base body and abrasive material block, described abrasive material block is by following quality
The raw material of percentage ratio is made: Cu 25%, Sn 20%, Co 20%, Al 5%, Fe 5%, Cr 3%, Ti 1%, MoS2
2%, SG abrasive material 3%, diamond 7%, additive 9%.
Described additive is made up of the raw material of following mass percent: Bi2O340%, B2O330%, ZnO 5%, SiO2
8%, Al2O35%, Na2CO33%, Li2CO35%, MgCO31%, CaF23%.The preparation method of described additive is with real
Execute example 1.
The preparation method of the self-sharpening diamond emery wheel of the present embodiment, comprises the following steps:
A) the Cu powder of formula ratio, Sn powder, Co powder, Al powder, Fe powder, Cr powder, Ti powder, MoS are taken2Powder, SG abrasive material, diamond and
Additive, loads batch mixing 4h in three-dimensional material mixer, obtains compound；
B) step a) gained compound is loaded in steel die, plow material, strike off, be placed on hydraulic press the pressure with 160MPa
Power is suppressed, and obtains blank；
C) step b) gained blank is loaded in graphite jig, in air atmosphere, be placed in pressing sintering and burn
Knot, particularly as follows: first to 350 DEG C and be incubated 3min with the ramp of 100 DEG C/min, promote the Sn of low melting point be completely melt into
Row alloying reaction, then to 610 DEG C and is incubated 3min with the ramp of 50 DEG C；After insulation, mould is placed in cold water
Chilling in (room temperature), obtains described abrasive material block；
D) step c gained abrasive material block is bonded on grinding wheel base body, obtains described self-sharpening diamond emery wheel.
Embodiment 5
The self-sharpening diamond emery wheel of the present embodiment, including grinding wheel base body and abrasive material block, described abrasive material block is by following quality
The raw material of percentage ratio is made: Cu 30%, Sn 5%, Co 35%, Al 10%, Fe 3%, Cr 3%, Ti 2%, MoS2
1%, SG abrasive material 2%, diamond 5%, additive 4%.
Described additive is made up of the raw material of following mass percent: Bi2O325%, B2O325%, ZnO 25%, SiO2
6%, Al2O310%, Na2CO32%, Li2CO32%, MgCO33%, CaF22%.The preparation method of described additive is with real
Execute example 1.
The preparation method of the self-sharpening diamond emery wheel of the present embodiment, comprises the following steps:
A) the Cu powder of formula ratio, Sn powder, Co powder, Al powder, Fe powder, Cr powder, Ti powder, MoS are taken2Powder, SG abrasive material, diamond and
Additive, loads batch mixing 2h in three-dimensional material mixer, obtains compound；
B) step a) gained compound is loaded in steel die, plow material, strike off, be placed on hydraulic press the pressure with 180MPa
Power is suppressed, and obtains blank；
C) step b) gained blank is loaded in graphite jig, in air atmosphere, be placed in pressing sintering and burn
Knot, particularly as follows: first to 450 DEG C and be incubated 2min with the ramp of 100 DEG C/min, promote the Sn of low melting point be completely melt into
Row alloying reaction, then to 590 DEG C and is incubated 8min with the ramp of 50 DEG C；After insulation, mould is placed in cold water
Chilling in (room temperature), obtains described abrasive material block；
D) step c gained abrasive material block is bonded on grinding wheel base body, obtains described self-sharpening diamond emery wheel.
The self-sharpening diamond emery wheel of embodiment 6-10, is respectively adopted the abrasive material block of embodiment 1-5 gained as emery wheel block,
Need not grinding wheel base body, be also feasible.
Experimental example
The serviceability of embodiment 1-5 gained self-sharpening diamond emery wheel is detected by this experimental example, result such as table 1 institute
Show.
Wherein, the abrasive material block raw material of described conventional emery wheel is made up of the component of following mass percent: Cu 50%, Sn
25%, Co 15%, diamond 10%；Preparation method is with embodiment 4.
The serviceability testing result of table 1 embodiment 1-5 gained self-sharpening diamond emery wheel
Note: the current of spindle motor is the biggest, loads the biggest.
As it can be seen from table 1 the skive of embodiment 1-5, due to good from sharp ability, eliminate finishing link, joint
Having saved finishing cost, the finishing time then shifts in the processing being added to workpiece；In the identical time, processing quantity improves about 17%,
Working (machining) efficiency promotes；And grinding load (resistance) reduces in grinding process, emery wheel sharpness improves, and yields is suitable.Detection knot
Fruit shows, the skive self-sharpening of the present invention is high, intensity is high, and working (machining) efficiency is high, consumes uniformly at grinding process medium plain emery wheel,
It is excused from a college course whole during the use of whole life cycle, and in grinding process, remains good grinding force, fundamentally
Solve diamond grinding wheel dressing time length, repair the problem that cost is high, there is good economic benefit.
Claims (10)
1. a self-sharpening diamond emery wheel, it is characterised in that: include that abrasive material block, the raw material of described abrasive material block comprise metal and combine
Agent, MoS2, SG abrasive material, diamond and additive；Described additive weight/mass percentage composition shared by the raw material of abrasive material block is
1%～10%；
Described additive is made up of the raw material of following mass percent: Bi2O325%～35%, B2O325%～35%,
ZnO5%～10%, SiO25%～10%, Al2O35%～10%, CaF21%～5%, Na2CO31%～5%, Li2CO3
1%～5%, MgCO31%～5%.
Self-sharpening diamond emery wheel the most according to claim 1, it is characterised in that: described additive is by including following step
Prepared by rapid method:
1) Bi of formula ratio is taken2O3、B2O3、ZnO、SiO2、Al2O3、Na2CO3、Li2CO3、MgCO3Mixing, be warming up to 1200～
1400 DEG C and be incubated 1～3h, obtain mixture；
2) by step 1) gained mixture is cooled to 850～950 DEG C, adds the CaF of formula ratio2Mixing, is incubated 1～2h, obtains sintering
Thing；
3) by step 2) gained sinter chilling, after be crushed to granularity D90 < 200nm to obtain final product.
Self-sharpening diamond emery wheel the most according to claim 1, it is characterised in that: described metallic bond is by following weight
The component composition of number: Cu 25～45 parts, Sn 5～20 parts, Co 20～35 parts, Al 3～10 parts, Fe 1～5 parts, Cr 1～
3 parts, Ti 1～3 parts.
Self-sharpening diamond emery wheel the most according to claim 1, it is characterised in that: in the raw material of described abrasive material block, SG grinds
Material is (2～6) with the mass ratio of diamond: (5～15).
Self-sharpening diamond emery wheel the most according to claim 4, it is characterised in that: described abrasive material block is by following percent mass
The raw material of ratio is made: Cu 25%～45%, Sn 5%～20%, Co 20%～35%, Al 3%～10%, Fe 1%～
5%, Cr 1%～3%, Ti 1%～3%, MoS21%～3%, SG abrasive material 2%～6%, diamond 5%～15%, interpolation
Agent 1%～10%.
6. according to the self-sharpening diamond emery wheel according to any one of claim 1-5, it is characterised in that: also include emery wheel base
Body, described abrasive material block is bonded on grinding wheel base body.
7. the preparation method of a self-sharpening diamond emery wheel as claimed in claim 1, it is characterised in that: include following step
Rapid:
A) metallic bond, MoS are taken2Powder, SG abrasive material, diamond and additive mixing, obtain compound；
B) step a) gained compound is placed in mould compacting, obtains blank；
C) step b) gained blank is placed in mould, is warming up to 580～620 DEG C and is incubated 4～10min and is sintered, anxious afterwards
Cold, obtain described abrasive material block.
The preparation method of self-sharpening diamond emery wheel the most according to claim 7, it is characterised in that: in step b), described
The pressure of compacting is 150～200MPa.
The preparation method of self-sharpening diamond emery wheel the most according to claim 7, it is characterised in that: in step c), described
After intensification refers to first be warming up to 350～450 DEG C with the heating rate of 100 DEG C/min and be incubated 1～3min, then with 50 DEG C/min's
Heating rate is warming up to 580～620 DEG C.
The preparation method of self-sharpening diamond emery wheel the most according to claim 7, it is characterised in that: also include gained
Abrasive material block is bonded on grinding wheel base body, obtains self-sharpening diamond emery wheel.
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| CN201610395488.1A CN106041760B (en) | 2016-06-06 | 2016-06-06 | A kind of self-sharpening diamond grinding wheel and preparation method thereof |
| US15/561,143 US10391612B2 (en) | 2016-06-06 | 2017-04-27 | Additive composition and composition binding agent for superhard material and preparation thereof, and self-sharpening diamond grinding wheel and preparation thereof |
| PCT/CN2017/082264 WO2017211143A1 (en) | 2016-06-06 | 2017-04-27 | Additive raw material composition and additive for superhard material product and preparation method therefor, composite binder and superhard material product, self-sharpening diamond wheel and preparation method therefor |
| US16/520,778 US11179828B2 (en) | 2016-06-06 | 2019-07-24 | Additive raw material composition and additive for superhard material product, preparation method of the additive, composite binding agent and superhard material product, self-sharpening diamond grinding wheel and preparation method of the same |
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| CN201610395488.1A CN106041760B (en) | 2016-06-06 | 2016-06-06 | A kind of self-sharpening diamond grinding wheel and preparation method thereof |
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| CN106041760B CN106041760B (en) | 2018-08-03 |
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