CN106112830A - Edging wheel and manufacture method thereof - Google Patents
Edging wheel and manufacture method thereof Download PDFInfo
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- CN106112830A CN106112830A CN201610689507.1A CN201610689507A CN106112830A CN 106112830 A CN106112830 A CN 106112830A CN 201610689507 A CN201610689507 A CN 201610689507A CN 106112830 A CN106112830 A CN 106112830A
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- powder
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- matrix
- cutter head
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Classifications
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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
-
- 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
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention proposes a kind of with low cost, reliable edging wheel of stabilized structure and manufacture method thereof.This edging wheel is made up of matrix, transition rings and cutter head ring, and transition rings is between matrix and cutter head ring, and matrix is interference fit with transition rings, transition rings and cutter head ring welding；The thermal coefficient of expansion of matrix is more than the thermal coefficient of expansion of transition rings.When manufacturing edging wheel, owing to the material of cutter head ring and transition rings is close, therefore thermal coefficient of expansion also close to, will after both weldings formed a relatively stable building ring, making matrix and transition rings by the way of heating, cooling down is interference fit, it is possible to fully ensure that both stable connections are reliable.Present configuration is simple, and manufacture method is unique, and the stable connection between low cost, and matrix and cutter head is reliable, has good practicality and commercial value.
Description
Technical field
The invention belongs to grinding tool technical field, be specifically related to edging wheel and manufacture method thereof.
Background technology
Edging wheel has been widely used for grinding and the polishing etc. of the materials such as glass, stone material, pottery, and traditional edging wheel has
Two kinds of structures and manufacture method:
1, the glass edging wheel as disclosed in the invention that number of patent application is 200810049090.8, by following weight parts proportioning
Raw material is prepared from: A. proportioning: white fused alumina powder: 170 parts, more than 500 mesh；Coupling agent: 0.5-1 part；EP resin: 21-29 part；
PF resin: 20-32 part, more than 320 mesh；Silicate fillers: 40-60 part, more than 320 mesh；Polyvinyl butyral resin: 0.5-2 part；
B. preparation method: first white fused alumina powder is done mixed front coupling agent treatment, is subsequently adding EP mixed with resin uniform, adds PF
Resin, filler, polyvinyl butyral resin are sufficiently stirred for；2. it is cold-pressed in first step gained compound being loaded mould
Type, more than pressure 13MPA；3. the blank that second step is made is put into and heat in baking oven, then stop heating, natural cooling and get final product
Finished product.The method that this kind of edging wheel uses integrated molding, although stabilized structure, but due to the work of middle part matrix Yu edge
Portion of material is consistent, and when needing the hardness improving edging wheel, middle part matrix also certainly will must use expensive material system
Become, the most relatively costly.
2, the microcrystalline glass diamond edging wheel as disclosed in the invention that number of patent application is 200610053515.3, this gold
Hard rock edging wheel is made up of aluminum matter matrix and bronze binding agent, and bronze binding agent is then by two kinds of different components of layer gold and transition zone
Composition, the composition quality proportioning of layer gold bonding agent is: CU:35～59%, SN:13～15%, CO:15～35%, NI:3%, TI:3%,
C:1～6%, the composition quality proportioning of transition zone is: CU:80～84%, SN:13～15%, NI:3～5%, and diamond abrasive is adopted
By MBD8 and MBD10 or similar intensity and the model of hardness, its granularity is 140/170 or 170/200 mesh, concentration be 50%～
75%.This kind of edging wheel aluminum matrix uses the method inlayed to be connected with bronze binding agent, and structure is the most firm, easily in work
During depart from, formed potential safety hazard.
It is badly in need of a kind of with low cost, reliable edging wheel of stabilized structure at present.
Summary of the invention
The purpose of the present invention is to propose to a kind of with low cost, reliable edging wheel of stabilized structure and manufacture method thereof.
The edging wheel of the present invention is made up of matrix, transition rings and cutter head ring, described transition rings be positioned at matrix and cutter head ring it
Between, and matrix and transition rings be interference fit, transition rings and cutter head ring welding.
Specifically, described matrix is alloy matrix aluminum, and described transition rings is that single kind metal is made or alloy system
Becoming, described cutter head ring is made up of the metal alloy powder doped with bortz powder or diamond particles.It addition, not by matrix and mistake
Cross before ring is assembled together, the internal diameter of described transition rings less than the external diameter of matrix, both differences 0.09～0.14mm it
Between；The thermal coefficient of expansion of described matrix is more than the thermal coefficient of expansion of transition rings；Cutter head ring be not assembled together with transition rings
Before, the internal diameter of cutter head ring is more than the external diameter of transition rings, and both differences are between 0.04～0.10mm.
The manufacture method of above-mentioned edging wheel is as follows:
A: be respectively prepared cutter head ring, transition rings and matrix；
B: put into together with transition rings in mould by the cutter head ring made, according to the process curve of the pressurization that heats up set, at height
Under temperature environment, cutter head ring blank and transition rings blank are pressurizeed, make cutter head ring and transition rings be welded together, then release and cooling,
Obtain building ring；
C: by building ring heat, make building ring expanded by heating, matrix put in building ring, then cool down, utilize matrix and
The difference of the thermal coefficient of expansion of transition rings, making matrix and transition rings is interference fit, thus is connected fixing to matrix and building ring.
The material of cutter head ring and transition rings is close, therefore thermal coefficient of expansion also close to, one will be formed relatively after both weldings
For stable building ring, making matrix and transition rings by the way of heating, cooling down is interference fit, it is possible to fully ensure that both
Stable connection reliable.
Further, in described step A, first bortz powder is mixed in the case of being dried with corresponding function metal powder
Close and uniformly obtain siccative；Then take fraction siccative to mix homogeneously with liquid paraffin or triglyceride and obtain wet feed, then wet feed
Mix homogeneously with remaining siccative；The mixed powder of described bortz powder and function metal powder and liquid paraffin or the weight of triglyceride
Amount ratio is 1000:20～1000:80.Benefit with liquid paraffin or triglyceride moistening siccative is as follows: 1, avoid Buddha's warrior attendant
Stone powder, various metal powder cause mixing uneven because of the difference of proportion；2, the powder after moistening, aridity is moderate, the coldest
Pressing formation, forming workblank has enough intensity；3, during follow-up being cold-pressed in blank, dress blank to hot pressing die, no
Meeting airborne dust, it is to avoid injury workman and pollution environment；4, liquid paraffin and the modest viscosity of triglyceride, and at 500～600 DEG C
Between can scaling loss volatilization, tyre body alloy will not be polluted.It addition, in twice mixed process, siccative mixing, is due to various for the first time
The proportion of metal powder is different with particle diameter, is dry mixed and easily makes various powder mix homogeneously, the easy segregation of wet mixing, causes mixing inequality
Even；Wet mixing for the second time, is to have obtained more uniform compound owing to first time is dry mixed, takes fraction siccative and liquid paraffin or sweet
Oil three esters, stir by mixing, obtain wetter wet feed, mix transmission profit by wetter wet feed with the rolling of siccative three-dimensional
Humectant, obtains the compound that degree of wetting is consistent.
Further, in described step B, after forming building ring, the internal diameter of transition rings is accurately processed, so that mistake
Cross the internal diameter of ring in preset range.
Owing to being to utilize the mode of interference fit to come matrix and building ring, therefore internal diameter and the matrix to building ring in succession
The required precision of external diameter the highest, otherwise arise that building ring cannot be nested on matrix, or building ring and matrix
Interference fit causes connecting the situations such as unstable not.In general, cutter head ring and transition rings are all hot-forming, molding
Precision relatively low, and owing to there is bortz powder or diamond particles, cutter head ring is difficult to its internal diameter of Precision Machining, by transition
After ring and cutter head ring welding, the transition rings not containing bortz powder or diamond particles has just become the internal ring of building ring, as long as
After welding, accurately process the internal ring of transition rings, the internal diameter of building ring can be ensured, and the external diameter of matrix is to be easier accurately
Processing, this ensures that there matrix reliable with the connection of building ring.
Further, the process curve of the pressurization that heats up described in step B is as follows: initial pressure was 0.5MPa, at 6 minutes
Within, make the temperature in mould rise to 650 DEG C；Again pressure is increased to 1.2MPa, within 5 minutes, by the temperature in mould
Degree rises to 900 DEG C from 650 DEG C；Pressure is increased to 3.1MPa again, and keeps 5 minutes at a temperature of 900 DEG C, sintered
Finish；Within the several seconds, shed pressure the most again and lower the temperature, being cooled to when 200 DEG C come out of the stove, then naturally cooling to room temperature, taking out welding
All-in-one-piece building ring.Segmentation is pressurizeed and gradually heats up, and is mainly the sintering character according to metal powder, softening temperature, densification
Degree sets, and to guarantee that the alloying level obtained, density and intensity meet requirement, and diamond damages less.?
In this case, initial pressure is the least, prevents blank fragmentation of colding pressing, but has enough pressure again, and the blank that makes to cold pressing is the most closely knit, and
Isolation air；Interstage pressure is moderate, between 650～900 DEG C, is the process of powder softening, and stone is damaged in pressure too conference by pressure
Ink mould, pressure is the least, and the consistency of building ring is inadequate, and space is too much；Final pressure to be tried one's best greatly, but will be at graphite jig energy
In the pressure born.Above-mentioned release should complete in moment (in the several seconds), because cooling rate is quickly, uncontrollable, if temperature
The lowest, pressure is the biggest, can press quick-fried graphite jig.
The edging wheel simple in construction of the present invention, its matrix have employed the material different from cutter head, can be substantially reduced cost,
Simultaneously by arranging transition rings and using special manufacture method so that the stable connection between matrix and cutter head is reliable, has
Well practicality and commercial value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the edging wheel of the present invention.
Fig. 2 is the structure sectional view of hot pressing die.
Fig. 3 is the intensification pressing technology curve chart in hot pressing.
Accompanying drawing indicates: 1, matrix；2, transition rings；3, cutter head ring；4, outer shroud；5, internal ring；6, seaming chuck；7, push-down head.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, to the most involved each of the detailed description of the invention of the present invention
Mutual alignment and annexation, the effect of each several part and operation principle etc. between the shape of component, structure, each several part are made into one
The detailed description of step.
Embodiment 1:
As it can be seen, the edging wheel of the present embodiment is made up of matrix 1, transition rings 2 and cutter head ring 3, described transition rings 2 is positioned at matrix
Between 1 and cutter head ring 3, and matrix 1 is interference fit with transition rings 2, transition rings 2 and cutter head ring 3 welding；Described matrix 1 is machine
The discoid alloy matrix aluminum 1 being processed to form, transition rings 2 is to be passed through hot pressing by copper powder, zinc powder, glass putty, signal bronze powder, iron powder
Made ring bodies, cutter head ring 3 is the ring bodies hot-forming by the metal alloy powder doped with bortz powder, wherein matrix
The thermal coefficient of expansion of 1 is more than the thermal coefficient of expansion of the thermal coefficient of expansion of transition rings 2, the thermal coefficient of expansion of transition rings 2 and cutter head ring 3
Close.
The composition of alloy matrix aluminum 1 is following (percentage by weight): silicon: 0.6～1.2%, ferrum: 1.0, copper: 3.5～4.5%,
Manganese: 0.2, magnesium: 0.45～0.9%, chromium: 0.1%, zinc: 0.25%, nickel: 1.7～2.3%, remaining is aluminum, the thermal coefficient of expansion of matrix 1
It it is 0.0000230～0.0000234 mm/ DEG C.
The function metal powder of transition rings 2 is mixed by copper powder, zinc powder, glass putty, signal bronze powder, iron powder, described copper and tin
In alloyed powder, the content of copper and tin is than for 90:10, and described copper powder, glass putty, zinc powder, the particle diameter of signal bronze powder are 30～50 micro-
Rice, the particle diameter of iron powder is 5～10 microns；In the function metal powder of described transition rings, the part by weight of each composition is as follows: copper powder 50
～74%, glass putty 5～9%, zinc powder 3～11%, signal bronze powder 20～38%, iron powder 4～9%.Function metal powder in transition rings
In, the effect of copper powder is to increase toughness and the ductility of alloy；Produce liquid phase when the effect of glass putty is sintering, soften alloy, fall
Low-alloyed sintering temperature；The effect of zinc powder is to form, with copper powder, iron powder, glass putty, the phase body that dissolves each other, and consolidates liquid phase, increases alloy
Fragility, puies forward heavy alloyed machinability；The effect of signal bronze powder is to soften alloy, improves the sintering character of alloy, improves and closes
The consistency of gold.Hardness HRB of the alloy after above transition rings 2 thermal sintering is 65～80, and thermal coefficient of expansion is 0.0000135
～0.0000155 mm/ DEG C.
The particle diameter of the bortz powder in cutter head ring 3 is 53～212 microns, and concentration range is 30%～60%；Function metal powder
Being mixed by copper powder, zinc powder, glass putty, signal bronze powder, cobalt powder, nikel powder, chromium powder, in described signal bronze powder, copper and tin contains
Amount is than being 90:10, and described copper powder, glass putty, zinc powder, signal bronze powder, the particle diameter of chromium powder are 30～50 microns, cobalt powder and nikel powder
Particle diameter is 3～8 microns；In function metal powder, the part by weight of each composition is as follows: copper powder 50～65%, glass putty 5～8%, zinc powder 3～
8%, signal bronze powder 17～25%, chromium powder 1～3%, cobalt powder 6～11%, nikel powder 3～10%；In above-mentioned functions metal powder, copper powder
Effect be to increase toughness and the ductility of carcass；Produce liquid phase when the effect of glass putty is sintering, soften carcass, reduce carcass
Sintering temperature；The effect of zinc powder is to form, with copper powder, iron powder, glass putty, the alloy that dissolves each other, and consolidates liquid phase, increases the fragility of carcass, carry
The sharpness of high carcass；The effect of signal bronze powder is to soften carcass, improves the sintering character of carcass, improves the densification of carcass
Degree；Cobalt powder is main component, and its sintering strength is high, and toughness and wearability are good；The effect of nikel powder is to increase wearability；The work of chromium powder
With being to increase the carcass hold to bortz powder.Hardness HRB of the carcass after above cutter head ring 3 thermal sintering is 75～90,
Thermal coefficient of expansion is 0.0000124～0.0000150 mm/ DEG C.
The manufacture method of above-mentioned edging wheel comprises the steps:
A: by the function metal powder mix homogeneously of transition rings 2 and put into punching block of colding pressing, cold-press moulding transition rings on cold press
Blank；By the bortz powder of cutter head ring 3 and corresponding function metal powder mix homogeneously and put into punching block of colding pressing, on cold press
Cold-press moulding cutter head ring blank；The cold pressing external diameter of blank of transition rings 2 is 135 mm, and the cold pressing external diameter of blank of cutter head ring 3 is 150
Mm, in general, the cold pressing internal diameter of blank of cutter head ring 3 is colded pressing than transition rings 2 external diameter big 0.04～0.10mm of blank；Pass through machine
The mode of processing makes matrix 1.
B: cutter head ring blank is inserted in transition rings blank, (the present embodiment is adopted to put into a hot pressing die with cannelure
With graphite jig) in, according to the process curve of the pressurization that heats up set, in high temperature environments to cutter head ring blank and transition rings hair
Base pressurizes, and uses the mode that the most two-way (being i.e. parallel to cutter head ring 3 and the axis direction of transition rings 2) pressurizes, in making mould
Cutter head ring blank and transition rings blank hot pressing, to predetermined tyre body alloy density, release and cooling the most again, obtain by cutter head ring 3
The building ring being welded together with transition rings 2 and formed；The structure of above-mentioned hot pressing die is as in figure 2 it is shown, by outer shroud 4, internal ring 5 and
The ring-type seaming chuck 6, the ring-type push-down head 7 that are located between internal ring 5 and outer shroud 4 are constituted, shape between outer shroud 4, internal ring 5, push-down head 7
Become annular trough body, after cutter head ring 3 and transition rings 2 are put into this annular trough body, place into seaming chuck 6, in hot pressing, logical
Cross seaming chuck 6, push-down head 7 applies pressure to cutter head ring 3 and transition rings 2；
C: after forming building ring, the internal diameter (i.e. the internal diameter of transition rings 2) of building ring is machined out, so that the internal diameter of building ring
In preset range；And utilize mach mode to make matrix 1, in the present embodiment, transition rings 2 and cutter head ring 3 welding one
Rising and become building ring, the internal diameter after building ring machining is 105 mm, and in general, the internal diameter of building ring is less than matrix 1
External diameter, both differences are between 0.09～0.14mm；
D: matrix 1 and building ring are heated to 100 DEG C～120 DEG C, then matrix 1 are put in building ring, then cool down, profit
By matrix 1 and the difference of the thermal coefficient of expansion of transition rings 2, make matrix 1 and transition rings 2 in interference fit, thus by matrix 1 and work
Make the fixing connection of ring.
Further, in described step A, first bortz powder is mixed in the case of being dried with corresponding function metal powder
Close and uniformly obtain siccative；Then take fraction siccative to mix homogeneously with liquid paraffin or triglyceride and obtain wet feed, then wet feed
Mix homogeneously with remaining siccative；The mixed powder of described bortz powder and function metal powder and liquid paraffin or the weight of triglyceride
Amount ratio is 1000:20～1000:80.
Specifically, the process curve of the pressurization that heats up described in step B is as follows: initial pressure was 0.5MPa, at 6 minutes
Within, make the temperature in mould rise to 650 DEG C；Again pressure is increased to 1.2MPa, within 5 minutes, by the temperature in mould
Degree rises to 900 DEG C from 650 DEG C；Pressure is increased to 3.1MPa again, and keeps 5 minutes at a temperature of 900 DEG C, sintered
Finish；Within the several seconds, shed pressure the most again and lower the temperature, being cooled to when 200 DEG C come out of the stove, then naturally cooling to room temperature, taking out welding
All-in-one-piece building ring.
Claims (8)
1. an edging wheel, it is characterised in that being made up of matrix, transition rings and cutter head ring, described transition rings is positioned at matrix and cutter head
Between ring, and matrix is interference fit with transition rings, transition rings and cutter head ring welding.
Edging wheel the most according to claim 1, it is characterised in that before matrix not being assembled together with transition rings, institute
Stating the internal diameter external diameter less than matrix of transition rings, both differences are between 0.09～0.14mm；The thermal expansion system of described matrix
Number is more than the thermal coefficient of expansion of transition rings.
Edging wheel the most according to claim 1, it is characterised in that before cutter head ring not being assembled together with transition rings,
The internal diameter of cutter head ring is more than the external diameter of transition rings, and both differences are between 0.04～0.10mm.
4. according to the edging wheel described in claim 1 or 2 or 3, it is characterised in that the composition of described matrix and weight percent are such as
Under: silicon: 0.6～1.2%, ferrum: 1.0, copper: 3.5～4.5%, manganese: 0.2, magnesium: 0.45～0.9%, chromium: 0.1%, zinc: 0.25%, nickel:
1.7～2.3%, remaining is aluminum；Described transition rings is made up of function metal powder, and the function metal powder in transition rings is by copper powder, zinc
Powder, glass putty, signal bronze powder, iron powder mix, and in described signal bronze powder, the content of copper and tin is than for 90:10, described copper
Powder, glass putty, zinc powder, the particle diameter of signal bronze powder are 30～50 microns, and the particle diameter of iron powder is 5～10 microns；Described transition rings
In function metal powder, the part by weight of each composition is as follows: copper powder 50～74%, glass putty 5～9%, zinc powder 3～11%, signal bronze powder
20～38%, iron powder 4～9%；Described cutter head ring is made up of bortz powder and function metal powder, and the particle diameter of described bortz powder is 53
～212 microns, concentration range is 30%～60%；Described function metal powder in cutter head ring is closed by copper powder, zinc powder, glass putty, copper and tin
Bronze, cobalt powder, nikel powder, chromium powder mix, and in described signal bronze powder, the content of copper and tin is than for 90:10, described copper powder, stannum
Powder, zinc powder, signal bronze powder, the particle diameter of chromium powder are 30～50 microns, and the particle diameter of cobalt powder and nikel powder is 3～8 microns；In cutter head ring
Function metal powder in the part by weight of each composition as follows: copper powder 50～65%, glass putty 5～8%, zinc powder 3～8%, signal bronze powder
17～25%, chromium powder 1～3%, cobalt powder 6～11%, nikel powder 3～10%.
The manufacture method of edging wheel the most according to claim 1, it is characterised in that specifically include following steps:
A: be respectively prepared cutter head ring, transition rings and matrix；
B: put into together with transition rings in mould by the cutter head ring made, according to the process curve of the pressurization that heats up set, at height
Under temperature environment, cutter head ring blank and transition rings blank are pressurizeed, make cutter head ring and transition rings be welded together, then release and cooling,
Obtain building ring；
C: again building ring is heated, make building ring expanded by heating, matrix is put in building ring, then cool down, utilize matrix
With the difference of the thermal coefficient of expansion of transition rings, making matrix and transition rings is interference fit, thus connects fixing to matrix and building ring
Connect.
The manufacture method of edging wheel the most according to claim 5, it is characterised in that in described step A, first by diamond
Powder obtains siccative with corresponding function metal powder mix homogeneously in the case of being dried；Then fraction siccative and liquid paraffin are taken
Or triglyceride mix homogeneously obtains wet feed, then wet feed is mixed homogeneously with remaining siccative；Described bortz powder and function gold
Belonging to the mixed powder of powder with the part by weight of liquid paraffin or triglyceride is 1000:20～1000:80.
The manufacture method of edging wheel the most according to claim 5, it is characterised in that in described step B, is forming building ring
After, the internal diameter of transition rings is accurately processed, so that the internal diameter of transition rings is in preset range.
The manufacture method of edging wheel the most according to claim 5, it is characterised in that the work of the pressurization that heats up described in step B
Skill curve is as follows: initial pressure is 0.5MPa, within 6 minutes, makes the temperature in mould rise to 650 DEG C；Again pressure is increased
Add to 1.2MPa, within 5 minutes, the temperature in mould is risen to 900 DEG C from 650 DEG C；Again pressure is increased to 3.1MPa,
And keep 5 minutes at a temperature of 900 DEG C, sinter complete；Within the several seconds, shed pressure the most again and lower the temperature, being cooled to 200 DEG C
Time come out of the stove, then naturally cool to room temperature, take out welding all-in-one-piece building ring.
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| CN106737253A (en) * | 2017-01-06 | 2017-05-31 | 浙江工业大学 | The preparation method of the gradient function polishing disk based on gauge block theory |
| CN106737253B (en) * | 2017-01-06 | 2019-03-05 | 浙江工业大学 | The preparation method of gradient function polishing disk based on gauge block theory |
| CN109048691A (en) * | 2018-07-18 | 2018-12-21 | 佛山市鼎和超硬材料制品有限公司 | A kind of edging wheel and its preparation process |
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| CN106112830B (en) | 2018-03-13 |
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