CN106217273A - A kind of diamond honing oil stone and preparation method thereof - Google Patents
A kind of diamond honing oil stone and preparation method thereof Download PDFInfo
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- CN106217273A CN106217273A CN201610757393.XA CN201610757393A CN106217273A CN 106217273 A CN106217273 A CN 106217273A CN 201610757393 A CN201610757393 A CN 201610757393A CN 106217273 A CN106217273 A CN 106217273A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
-
- 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
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0063—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by extrusion
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention provides a kind of diamond honing oil stone and preparation method thereof, and diamond honing oil stone is made up of the raw material of following percentage by weight: granularity is 400 mesh ~ 1000 mesh diadust 5 ~ 10% and metallic bonds 90 ~ 95%；Described metallic bond is that 200 mesh ~ 800 mesh Pulvis Talci 2 ~ 5% form by copper and tin prealloy powder 45 ~ 55%, argentum powder 12 ~ 20%, magnesium powder 30 ~ 33% and granularity；Concrete preparation method is to prepare oil stone blank by operations such as batch mixing, mould molding, sintering, Equal-channel Angular Pressings, oil stone blank finally carries out machining, obtains the finished product that dimensional accuracy is qualified；Current Barrel of Hydraulic Cylinders honing stone working fluid cylinder pressure cylinder barrel cylindricity is low, linearity is poor, surface roughness is the most up to standard and there is the problems such as burn, burr, Barrel of Hydraulic Cylinders bore area scuffing in the oilstone solution utilizing the present invention to make, and improves the hardness of oilstone, shape retention and service life simultaneously.
Description
Technical field
The invention belongs to Barrel of Hydraulic Cylinders honing field, be specifically related to a kind of diamond honing oil stone and preparation method thereof.
Background technology
Honing is, with the oilstone being embedded on honing head, surface of the work is applied certain pressure, hone or workpiece simultaneously
For the relative rotation and axial straight reciprocating motion, the method for fine finishing of minimum surplus on excision workpiece, owing to honing can make workpiece
Reach the highest precision and surface smoothness, thus it is various to be widely used in hydraulic cylinder, bearing ring, cylinder sleeve for internal combustion engine etc.
The precise and ultraprecise machining of inner bore of part.The key factor affecting honing quality includes machine tool capability and honing stone etc..The top gem of a girdle-pendant
Mill oilstone is as a key factor, and it not only affects machining accuracy and the surface roughness of part, has an effect on grinding efficiency etc..
Oilstone is usually long strip type.Due to the super hard abrasive (diamond and cubic boron nitride) significant advantage on grinding performance, at present
Super hard abrasive honing stone the most gradually replaces conventional abrasive material oilstone.
The hydraulic pressure that hydraulic energy is changed into mechanical energy by hydraulic cylinder, do straight reciprocating motion (or oscillating motion) performs unit
Part.Its simple in construction, reliable operation.When realizing moving back and forth with it, deceleration device can be removed from, and there is no drive gap,
Stable movement, is therefore used widely in the hydraulic system of various machineries.Cylinder barrel is as the critical piece of hydraulic cylinder, and it adds
The quality of working medium amount directly affects the life and reliability of whole product.Alternate load is subject at work due to hydraulic cylinder
Effect, this just proposes strict requirements to indexs such as the surface quality of Barrel of Hydraulic Cylinders, shape and size precision, and its inner surface is thick
Rugosity requires to be Ra0.2～0.6um, requires strict to axiality, linearity simultaneously.
The common manufacturing procedure of Barrel of Hydraulic Cylinders is: heavy boring half right boring right boring honing.Through heavy boring, partly
After right boring and right boring, Barrel of Hydraulic Cylinders has been provided with basic geomery, but precision is relatively low.Honing operation master subsequently
If in order to eliminate the cutter trade of right boring, remove surplus, improving the precision in hole the most further and reduce surface roughness.
The basic feature of Barrel of Hydraulic Cylinders is deep hole machining, and polish difficulty is big, proposes higher to diamond honing oil stone used
Performance requirement.At present, Barrel of Hydraulic Cylinders honing diamond stick still suffers from following problem:
(1) oilstone matrix hardness lack of homogeneity, during causing oilstone to use, diverse location rate of depreciation is different, causes honing
The rear Barrel of Hydraulic Cylinders accuracy of form and position is the most up to standard, as low in cylindricity precision, linearity is poor；(2) oilstone bonding agent integral hardness on the low side,
Bonding agent is weak to the hold of diamond, causes oilstone to wear no resistance, and oilstone shape retention is poor, needs often finishing to ensure
Oilstone form accuracy, not only reduces working (machining) efficiency, and shortens the oilstone life-span.(3) oilstone formula mates with processing object
Spending relatively low, after Honing process, Barrel of Hydraulic Cylinders inside surface roughness is the most up to standard, burn occurs in section hydraulic cylinder cylinder barrel, scratch, hair
The problems such as thorn.
According to the problem of above-mentioned existence, in order to meet the process requirements of Barrel of Hydraulic Cylinders high, precision and frontier and expanding day
The market demand, is badly in need of a kind of metal-bonded diamond oilstone for Barrel of Hydraulic Cylinders honing.
Summary of the invention
The present invention be directed to defect present in prior art and provide a kind of diamond honing oil stone and preparation side thereof
Method, the current Barrel of Hydraulic Cylinders honing stone working fluid cylinder pressure cylinder barrel cylindricity of oilstone solution utilizing the present invention to make is low, straight line
Spend poor, surface roughness is the most up to standard and there is the problem such as burn, burr, Barrel of Hydraulic Cylinders bore area scuffing, improves oil simultaneously
The hardness of stone, shape retention and service life.
For achieving the above object, the technical solution used in the present invention is as follows:
The present invention provides a kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 400 mesh ~ 1000
Mesh diadust 5 ~ 10% and metallic bond 90 ~ 95%；Described metallic bond is by copper and tin prealloy powder 45 ~ 55%, argentum powder 12
~ 20%, magnesium powder 30 ~ 33% and granularity are 200 mesh ~ 800 mesh Pulvis Talci 2 ~ 5% compositions.
According to above-mentioned diamond honing oil stone, it is made up of the raw material of following percentage by weight: granularity is 800 mesh diamond
Micropowder 7% and metallic bond 93%；Described metallic bond by copper and tin prealloy powder 50%, argentum powder 15%, magnesium powder 30% and granularity is
800 mesh Pulvis Talci 5% form.
According to above-mentioned diamond honing oil stone, described copper and tin prealloy powder is made up of the raw material of following percentage by weight:
Copper 40 ~ 58% and stannum 42 ~ 60%.
According to above-mentioned diamond honing oil stone, described copper and tin prealloy powder is made up of the raw material of following percentage by weight:
Copper 53% and stannum 47%.
According to above-mentioned diamond honing oil stone, purity >=99.0% of described argentum powder, granularity is 100 mesh ~ 200 mesh.
According to above-mentioned diamond honing oil stone, purity >=99.0% of described magnesium powder, granularity is 100 mesh ~ 200 mesh.
According to above-mentioned diamond honing oil stone, described copper and tin prealloy powder prepare purity >=99.8% of copper in raw material,
Granularity is 100 mesh ~ 200 mesh.
According to above-mentioned diamond honing oil stone, described copper and tin prealloy powder prepare purity >=99.8% of stannum in raw material,
Granularity is 100 mesh ~ 200 mesh.
According to the preparation method of above-mentioned diamond honing oil stone, comprise the steps:
Weigh metallic bond the most by weight percentage, be subsequently adding diadust and 0.1 ~ 0.2 times of metallic bond amount
Wetting agent, is sufficiently mixed uniformly；
B. according to diamond honing oil stone size, graphite jig is selected, the powder that graphite jig will mix in step a after assembling
Material puts in graphite jig die cavity, uniformly after the material of stand, covers graphite top board, obtains mould to be burnt；
C. the mould to be burnt obtained in step b is placed on pressing sintering and is fired, sintering process: according to 150 DEG C/min
Heating rate be warming up to 440 ~ 530 DEG C, and heat-insulation pressure keeping 15 ~ 20min under this sintering temperature；Boosting curve is: compacting temperature
When degree is 0 ~ 100 DEG C, pressing pressure is 10MPa, and when press temperature is 100 ~ 200 DEG C, pressing pressure is 20MPa, and press temperature is
When 200 ~ 300 DEG C, pressing pressure is 30MPa, and when press temperature is 300 ~ 400 DEG C, pressing pressure is 40MPa, and press temperature is 400
When ~ 500 DEG C, pressing pressure is 50MPa, and when press temperature is 500 ~ 600 DEG C, pressing pressure is 60MPa, and heat-insulation pressure keeping process completes
After, stop heating removal sintering pressure, treat that mould naturally cools to room temperature, take mould apart, obtain oil stone blank；
D. the oil stone blank obtained step c carries out Equal-channel Angular Pressing, and extrusion die parameter is: the outer modular angle of two passages
Ψ angle is 25 ° ~ 30 °, the interior modular angle Φ angle of two passages is 90 ° ~ 120 °；Extrusion process parameters is: extrusion temperature is 240 ~ 320
DEG C, extrusion speed 0.5mm ~ 3mm/s, extrusion passes 1 ~ 3 time；
E. the oil stone blank obtained step d carries out machining, obtains the finished product that dimensional accuracy is qualified.
According to the preparation method of above-mentioned diamond honing oil stone, the wetting agent described in step a is liquid paraffin.
Compared with prior art, it is an advantage of the current invention that:
1, oilstone composition of the present invention and proportioning are through the long-term practice of applicant, in combination with the workpiece Barrel of Hydraulic Cylinders of grinding
Technical parameter include what material, hardness etc. designed, this material combination proportioning is scientific and reasonable.This bonding agent formula system
It is made up of copper and tin prealloy powder, magnesium powder, argentum powder, Pulvis Talci.Formula system employs the copper and tin prealloy of high tin content in a large number
Powder (in alloyed powder, Theil indices accounts for more than 42%) and magnesium powder, above congruent melting point is relatively low, liquid group in bonding agent when adding sintering
Point content so that bonding agent to the parcel of diamond more fully, bonding agent is higher to the hold of diamond after sintering, has
Effect adds wearability and the service life of diamond stick；Meanwhile, the activity of magnesium powder is the highest, has bonding agent alloying process
Facilitation, and then improve dense structure's degree and the hardness of bonding agent.Additionally, the addition of magnesium can effectively reduce sintering process
The oxidation of middle diamond.Silver has splendid heat conductivity, adds silver and improves the heat dispersion of oilstone, effectively reduce in bonding agent
The workpiece burn phenomenon caused because of poor heat radiation in grinding process, meanwhile, the ductility of silver is the highest, can effectively promote oilstone
Plasticity, it is to avoid there is the problem such as crackle, fracture in Equal-channel Angular Pressing operation subsequently in oilstone, it is ensured that wait passage to turn
Angular pressing technology feasible.Pulvis Talci stable in properties, there is good lubrication, add in bonding agent and can be effectively improved oil
The self-sharpening of stone, it is ensured that oilstone continued sharpness.Pulvis Talci density is higher relative to additives such as graphite, it is not easy to floating, improves
Working environment, is also easier to be uniformly dispersed in bonding agent simultaneously.
2, Equal Channel Angular Pressing is a kind of to prepare thin crystalline substance, high-strength, the important method of high hardness material.The present invention couple
Oil stone blank after sintering carries out Equal-channel Angular Pressing, and oil stone blank occurs strong detrusion at channel corner, knot
Mixture crystal grain obtains broken refinement, and the method adds and do not changes oilstone shape of cross section man-hour simultaneously, repeatable extruding thus obtain
Sizable overall strain amount, makes oilstone bonding agent crystal grain fully be refined and even tissue improves, based on refined crystalline strengthening principle,
Thus significantly improve hardness and the uniformity of hardness of oilstone bonding agent.
3, oilstone of the present invention has the spies such as matrix hardness uniformity is good, hardness is high, formula is good with processing object matching
Point, uses oilstone honing Barrel of Hydraulic Cylinders of the present invention, Barrel of Hydraulic Cylinders endoporus cylindricity and linearity precision height, cylinder after honing
Inside surface roughness is low, there is not hydraulic cylinder tube inner surface burn, burr, scuffing phenomenon etc., oilstone life-span length, shape simultaneously for set
Shape retentivity is good.
4, production process of the present invention is simple and convenient to operate, production efficiency is high, be suitable for large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is Equal-channel Angular Pressing artwork in the present invention；
1. punch；2. oil stone blank；3. concave template.
Detailed description of the invention
Following example are illustrating of the diamond honing oil stone to the present invention and preparation method thereof, but the present invention
Content does not limit so.
Embodiment 1:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is that 400 mesh ~ 1000 mesh diamond are micro-
Powder 5 ~ 10% and metallic bond 90 ~ 95%；Described metallic bond is by copper and tin prealloy powder 45 ~ 55%, argentum powder 12 ~ 20%, magnesium powder
30 ~ 33% and Pulvis Talci 2 ~ 5% composition；Described copper and tin prealloy powder is made up of the raw material of following percentage by weight: copper 40 ~ 58% He
Stannum 42 ~ 60%.
Purity >=99.0% of described argentum powder, granularity is 100 mesh ~ 200 mesh.
Purity >=99.0% of described magnesium powder, granularity is 100 mesh ~ 200 mesh.
Described copper and tin prealloy powder prepare purity >=99.8% of copper in raw material, granularity is 100 mesh ~ 200 mesh.
Described copper and tin prealloy powder prepare purity >=99.8% of stannum in raw material, granularity is 100 mesh ~ 200 mesh.
The preparation method of a kind of diamond honing oil stone, comprises the steps:
Weigh metallic bond the most by weight percentage, be subsequently adding diadust and 0.1 ~ 0.2 times of metallic bond amount
Wetting agent, is sufficiently mixed uniformly, and wetting agent used is liquid paraffin；
B. according to diamond honing oil stone size, graphite jig is selected, the powder that graphite jig will mix in step a after assembling
Put in graphite jig die cavity, uniformly after the material of stand, cover graphite top board, obtain mould to be burnt；
C. the mould to be burnt obtained in step b is placed on pressing sintering and is fired, sintering process: according to 150 DEG C/min
Heating rate be warming up to 440 ~ 530 DEG C, and heat-insulation pressure keeping 15 ~ 20min under this sintering temperature；Boosting curve is: compacting temperature
When degree is 0 ~ 100 DEG C, pressing pressure is 10MPa, and when press temperature is 100 ~ 200 DEG C, pressing pressure is 20MPa, and press temperature is
When 200 ~ 300 DEG C, pressing pressure is 30MPa, and when press temperature is 300 ~ 400 DEG C, pressing pressure is 40MPa, and press temperature is 400
When ~ 500 DEG C, pressing pressure is 50MPa, and when press temperature is 500 ~ 600 DEG C, pressing pressure is 60MPa, and heat-insulation pressure keeping process completes
After, stop heating removal sintering pressure, treat that mould naturally cools to room temperature, take mould apart, obtain oil stone blank；
D. the oil stone blank obtained step c carries out Equal-channel Angular Pressing, and extrusion die parameter is: the outer modular angle of two passages
Ψ angle is 25 ° ~ 30 °, the interior modular angle Φ angle of two passages is 90 ° ~ 120 °；Extrusion process parameters is: extrusion temperature is 240 ~ 320
DEG C, extrusion speed 0.5mm ~ 3mm/s, extrusion passes 1 ~ 3 time；
E. the oil stone blank obtained step d carries out machining, obtains the finished product that dimensional accuracy is qualified.
Embodiment 2:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 800 mesh diadusts 7% and gold
Belong to bonding agent 93%；Described metallic bond is made up of copper and tin prealloy powder 55%, argentum powder 12%, magnesium powder 30% and Pulvis Talci 3%；Institute
State copper and tin prealloy powder to be made up of the raw material of following percentage by weight: copper 52% and stannum 48%.
Purity >=99.0% of described argentum powder, granularity is 100 mesh ~ 200 mesh.
Purity >=99.0% of described magnesium powder, granularity is 100 mesh ~ 200 mesh.
Described copper and tin prealloy powder prepare purity >=99.8% of copper in raw material, granularity is 100 mesh ~ 200 mesh.
Described copper and tin prealloy powder prepare purity >=99.8% of stannum in raw material, granularity is 100 mesh ~ 200 mesh
The preparation method of a kind of diamond honing oil stone, comprises the steps:
Weigh metallic bond the most by weight percentage, be subsequently adding diadust and 0.1 ~ 0.2 times of metallic bond amount
Wetting agent, is sufficiently mixed uniformly, and wetting agent used is liquid paraffin；
B. according to diamond honing oil stone size 9mm × 9mm × 100mm, selecting graphite jig, graphite jig will step after assembling
In rapid a, the powder of mixing puts in graphite jig die cavity, uniformly after the material of stand, covers graphite top board, obtains mould to be burnt；
C. the mould to be burnt obtained in step b is placed on pressing sintering and is fired, sintering process: according to 150 DEG C/min
Heating rate be warming up to 510 DEG C, and heat-insulation pressure keeping 15min under this sintering temperature；Boosting curve is: press temperature is 0 ~
When 100 DEG C, pressing pressure is 10MPa, and when press temperature is 100 ~ 200 DEG C, pressing pressure is 20MPa, and press temperature is 200 ~ 300
DEG C time pressing pressure be 30MPa, when press temperature is 300 ~ 400 DEG C, pressing pressure is 40MPa, and press temperature is 400 ~ 500 DEG C
Time pressing pressure be 50MPa, when press temperature is 500 ~ 600 DEG C, pressing pressure is 60MPa, after heat-insulation pressure keeping process completes, stops
Only heating removal sintering pressure, treat that mould naturally cools to room temperature, take mould apart, obtain oil stone blank；
D. the oil stone blank obtained step c carries out Equal-channel Angular Pressing, and extrusion die parameter is: the outer modular angle of two passages
Ψ angle is 25 °, the interior modular angle Φ angle of two passages is 90 °；Extrusion process parameters is: extrusion temperature is 240 DEG C, extrusion speed
0.5mmmm/s, extrusion passes 1 time；
E. the oil stone blank obtained step d carries out machining, obtains the finished product that dimensional accuracy is qualified.
Embodiment 3:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 400 mesh diadusts 5% and gold
Belong to bonding agent 95%；Described metallic bond is made up of copper and tin prealloy powder 50%, argentum powder 14%, magnesium powder 33% and Pulvis Talci 3%；Institute
State copper and tin prealloy powder to be made up of the raw material of following percentage by weight: copper 40% and stannum 60%.
The preparation method of the present embodiment can refer to embodiment 2.
Embodiment 4:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 600 mesh diadusts 8% and gold
Belong to bonding agent 92%；Described metallic bond is made up of copper and tin prealloy powder 45%, argentum powder 19%, magnesium powder 31% and Pulvis Talci 5%；Institute
State copper and tin prealloy powder to be made up of the raw material of following percentage by weight: copper 58% and stannum 42%.
The preparation method of the present embodiment can refer to embodiment 2.
Embodiment 5:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 800 mesh diadust 10% Hes
Metallic bond 90%；Described metallic bond is made up of copper and tin prealloy powder 48%, argentum powder 16%, magnesium powder 32% and Pulvis Talci 4%；
Described copper and tin prealloy powder is made up of the raw material of following percentage by weight: copper 56% and stannum 44%.
The preparation method of the present embodiment can refer to embodiment 2.
Embodiment 6:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 1000 mesh diadust 7% Hes
Metallic bond 93%；Described metallic bond is made up of copper and tin prealloy powder 46%, argentum powder 20%, magnesium powder 32% and Pulvis Talci 2%；
Described copper and tin prealloy powder is made up of the raw material of following percentage by weight: copper 57% and stannum 43%.
The preparation method of the present embodiment can refer to embodiment 2.
Embodiment 7:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 1000 mesh diadust 9% Hes
Metallic bond 91%；Described metallic bond is made up of copper and tin prealloy powder 45%, argentum powder 20%, magnesium powder 32% and Pulvis Talci 3%；
Described copper and tin prealloy powder is made up of the raw material of following percentage by weight: copper 58% and stannum 42%.
The preparation method of the present embodiment and reference embodiment 2.
Embodiment 8:
A kind of diamond honing oil stone, is made up of the raw material of following percentage by weight: granularity is 600 mesh diadusts 7% and gold
Belong to bonding agent 93%；Described metallic bond is made up of copper and tin prealloy powder 50%, argentum powder 15%, magnesium powder 30% and Pulvis Talci 5%；Institute
State copper and tin prealloy powder to be made up of the raw material of following percentage by weight: copper 53% and stannum 47%.
The preparation method of the present embodiment can refer to embodiment 2.
The diamond honing oil stone that the embodiment of the present invention 2 ~ 8 obtains is processed with money hydraulic cylinder with the most similar oilstone
The Key Performance Indicator of cylinder barrel, to such as table 1, the most each honing head is uniformly inlayed 8 honing stones.
Claims (10)
1. a diamond honing oil stone, it is characterised in that: be made up of the raw material of following percentage by weight: granularity be 400 mesh ~
1000 mesh diadusts 5 ~ 10% and metallic bond 90 ~ 95%；Described metallic bond is by copper and tin prealloy powder 45 ~ 55%, silver
Powder 12 ~ 20%, magnesium powder 30 ~ 33% and granularity are 200 mesh ~ 800 mesh Pulvis Talci 2 ~ 5% compositions.
Diamond honing oil stone the most according to claim 1, it is characterised in that: by the raw material system of following percentage by weight
Become: granularity is 800 mesh diadusts 7% and metallic bond 93%；Described metallic bond is by copper and tin prealloy powder 50%, silver
Powder 15%, magnesium powder 30% and granularity are that 800 mesh Pulvis Talci 5% form.
Diamond honing oil stone the most according to claim 1, it is characterised in that: described copper and tin prealloy powder is by following weight
The raw material of percentage ratio is made: copper 40 ~ 58% and stannum 42 ~ 60%.
Diamond honing oil stone the most according to claim 3, it is characterised in that: described copper and tin prealloy powder is by following weight
The raw material of percentage ratio is made: copper 53% and stannum 47%.
Diamond honing oil stone the most according to claim 1, it is characterised in that: purity >=99.0% of described argentum powder, granularity
It is 100 mesh ~ 200 mesh.
Diamond honing oil stone the most according to claim 1, it is characterised in that: purity >=99.0% of described magnesium powder, granularity
It is 100 mesh ~ 200 mesh.
Diamond honing oil stone the most according to claim 3, it is characterised in that: described copper and tin prealloy powder prepare raw material
Purity >=99.8% of middle copper, granularity is 100 mesh ~ 200 mesh.
Diamond honing oil stone the most according to claim 3, it is characterised in that: described copper and tin prealloy powder prepare raw material
Purity >=99.8% of middle stannum, granularity is 100 mesh ~ 200 mesh.
The preparation method of diamond honing oil stone the most according to claim 1, it is characterised in that comprise the steps:
Weigh metallic bond the most by weight percentage, be subsequently adding diadust and 0.1 ~ 0.2 times of metallic bond amount
Wetting agent, is sufficiently mixed uniformly；
B. according to diamond honing oil stone size, graphite jig is selected, the powder that graphite jig will mix in step a after assembling
Put in graphite jig die cavity, uniformly after the material of stand, cover graphite top board, obtain mould to be burnt；
C. the mould to be burnt obtained in step b is placed on pressing sintering and is fired, sintering process: according to 150 DEG C/min
Heating rate be warming up to 440 ~ 530 DEG C, and heat-insulation pressure keeping 15 ~ 20min under this sintering temperature；Boosting curve is: compacting temperature
When degree is 0 ~ 100 DEG C, pressing pressure is 10MPa, and when press temperature is 100 ~ 200 DEG C, pressing pressure is 20MPa, and press temperature is
When 200 ~ 300 DEG C, pressing pressure is 30MPa, and when press temperature is 300 ~ 400 DEG C, pressing pressure is 40MPa, and press temperature is 400
When ~ 500 DEG C, pressing pressure is 50MPa, and when press temperature is 500 ~ 600 DEG C, pressing pressure is 60MPa, and heat-insulation pressure keeping process completes
After, stop heating removal sintering pressure, treat that mould naturally cools to room temperature, take mould apart, obtain oil stone blank；
D. the oil stone blank obtained step c carries out Equal-channel Angular Pressing, and extrusion die parameter is: outer modular angle Ψ of two passages
Angle is 25 ° ~ 30 °, the interior modular angle Φ angle of two passages is 90 ° ~ 120 °；Extrusion process parameters is: extrusion temperature is 240 ~ 320 DEG C,
Extrusion speed 0.5mm ~ 3mm/s, extrusion passes 1 ~ 3 time；
E. the oil stone blank obtained step d carries out machining, obtains the finished product that dimensional accuracy is qualified.
The preparation method of diamond honing oil stone the most according to claim 1, it is characterised in that: moistening described in step a
Agent is liquid paraffin.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825310A (en) * | 2017-10-27 | 2018-03-23 | 南京三超新材料股份有限公司 | A kind of diamond metal grinding tool manufacture method |
| CN108480641A (en) * | 2018-03-09 | 2018-09-04 | 张家港立志传导新材料有限公司 | A kind of method that metal powder block prepares super fine crystal material |
| CN110125821A (en) * | 2019-05-27 | 2019-08-16 | 福建省泉州市华钻金刚石工具有限公司 | A kind of stone polishing metal abrading block and preparation method thereof |
| CN110315441A (en) * | 2019-05-08 | 2019-10-11 | 山西钜星超硬工具制品有限公司 | A kind of preparation method of superhard honing stone |
| CN113458987A (en) * | 2021-06-16 | 2021-10-01 | 南京森尔南精密机床有限公司 | Honing oilstone rough grinding method |
| CN114473888A (en) * | 2022-01-26 | 2022-05-13 | 郑州市钻石精密制造有限公司 | Honing strip metal bonding agent composed of pre-alloyed powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825310A (en) * | 2017-10-27 | 2018-03-23 | 南京三超新材料股份有限公司 | A kind of diamond metal grinding tool manufacture method |
| CN107825310B (en) * | 2017-10-27 | 2019-11-22 | 南京三超新材料股份有限公司 | A kind of diamond metal grinding tool manufacturing method |
| CN108480641A (en) * | 2018-03-09 | 2018-09-04 | 张家港立志传导新材料有限公司 | A kind of method that metal powder block prepares super fine crystal material |
| CN110315441A (en) * | 2019-05-08 | 2019-10-11 | 山西钜星超硬工具制品有限公司 | A kind of preparation method of superhard honing stone |
| CN110125821A (en) * | 2019-05-27 | 2019-08-16 | 福建省泉州市华钻金刚石工具有限公司 | A kind of stone polishing metal abrading block and preparation method thereof |
| CN110125821B (en) * | 2019-05-27 | 2021-08-17 | 福建省泉州市华钻金刚石工具有限公司 | Metal grinding block for stone polishing and manufacturing method thereof |
| CN113458987A (en) * | 2021-06-16 | 2021-10-01 | 南京森尔南精密机床有限公司 | Honing oilstone rough grinding method |
| CN114473888A (en) * | 2022-01-26 | 2022-05-13 | 郑州市钻石精密制造有限公司 | Honing strip metal bonding agent composed of pre-alloyed powder |
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