CN106181793A - Abrasive fluid elastic grinding material formula and fabrication and processing technique - Google Patents
Abrasive fluid elastic grinding material formula and fabrication and processing technique Download PDFInfo
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- CN106181793A CN106181793A CN201610543708.0A CN201610543708A CN106181793A CN 106181793 A CN106181793 A CN 106181793A CN 201610543708 A CN201610543708 A CN 201610543708A CN 106181793 A CN106181793 A CN 106181793A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
Abstract
The present invention relates to polish consumptive material technical field, be specifically related to abrasive fluid elastic grinding material formula and fabrication and processing technique, its formula is: matrix percentage is 15% 35%；Solvent naphtha percentage 0 55%；Plasticizer percentage 3% 10%；Softening agent percentage 5% 7%；Heat stabilizer percentage 2% 3%；Abrasive particle percentage 20% 70%；Its fabrication and processing technique is: 1, in blender add matrix, 2, add solvent naphtha, 3, be sufficiently stirred for blender after take out, 4, reaction 45 hours, 5, with pulverizer pulverize, 6, add plasticizer, 7 add softening agents, 8 add heat stabilizer, and 9 add abrasive particle, and 10 stir；Abrasive fluid elastic grinding material formula of the present invention and fabrication and processing technique, the abrasive material viscoelasticity that it makes is good, adhesion workpiece, good fluidity, good processability, chemical property is compatible, there is stable mechanical performance and physical property, and economy and durability, nontoxic pollution-free.
Description
Technical field
The present invention relates to polish consumptive material technical field, be specifically related to abrasive fluid elastic grinding material formula and fabrication and processing work
Skill.
Background technology
Owing to abrasive flow machining is widely used in the processing aspect of various part, abrasive flow machining is used to replace underhand polish
Can reduce the labor intensity of master worker to a great extent, and the uniformity of production efficiency and surface quality, abrasive material can be improved
In stream processing, the R and D of abrasive medium are the bases of Abrasive Flow Machining application, and abrasive material is the important shadow of crudy
The factor of sound, the fluid properties of abrasive flows determines that its alterable is invisible and all-pervasive, connects owing to abrasive flows can form good profiling
Touch, in curved surface and Special-Shaped Surface are processed, therefore embody advantage, but abrasive material viscoelasticity in the market is the best, and adhesion
Workpiece, poor fluidity, poor processability, also have chemical property mutually incompatible, do not possess have stable mechanical performance and
Physical property, causes economic performance poor, is not durable durable, and can pollute.
Summary of the invention
Present invention aims to defect and the deficiency of prior art, it is provided that a kind of simple in construction, reasonable in design, make
By convenient abrasive fluid elastic grinding material formula and fabrication and processing technique, its formula is: matrix percentage is 15%-
35%；Solvent naphtha percentage 0-55%；Plasticizer percentage 3%-10%；Softening agent percentage 5%-7%；
Heat stabilizer percentage 2%-3%；Abrasive particle percentage 20%-70%；Its fabrication and processing technique is: 1, to stirring
Add matrix in machine, 2, add solvent naphtha, 3, be sufficiently stirred for blender after take out, 4, reaction 4-5 hour, 5, use pulverizer powder
Broken, 6, add plasticizer, 7 add softening agents, 8 add heat stabilizers, 9 add abrasive particles, 10 stir.
After using above-mentioned technique, present invention have the beneficial effect that abrasive fluid elastic grinding material formula of the present invention and system
Making processing technique, the abrasive material viscoelasticity that it makes is good, and adhesion workpiece, good fluidity, good processability, chemical property is the most double
Hold, there is stable mechanical performance and physical property, and economy and durability, nontoxic pollution-free.
Detailed description of the invention
Abrasive fluid elastic grinding material formula described in this detailed description of the invention and fabrication and processing technique, its formula is: base
Body percentage is 15%-35%；Solvent naphtha percentage 0-55%；Plasticizer percentage 3%-10%；Soften
Agent percentage 5%-7%；Heat stabilizer percentage 2%-3%；Abrasive particle percentage 20%-70%；Its system
As processing technique be: in blender, 1, add matrix, 2, add solvent naphtha, 3, be sufficiently stirred for blender after take out, 4, anti-
Answering 4-5 hour, 5, pulverize with pulverizer, 6, add plasticizer, 7 add softening agents, and 8 add heat stabilizers, and 9 add abrasive particles, and 10
Stir.
Further: described matrix is silicone oil.
Further: described solvent naphtha is light oil.
Further: described plasticizer is naphthenic oil.
Further: described softening agent is white oil.
Further: described softening agent is white oil.
Further: described heat stabilizer is stearic acid sodium.
Further: described abrasive particle is diamond.
Further: described abrasive particle is boron carbide.
Further: described abrasive particle is carborundum.
Further: described abrasive particle is Brown Alundum.
Have studied different surface of the works quality after abrasive flow machining, it is believed that initial surface form and abrasive nature
Relatively big on the surface quality impact after processing, systematically have studied technological parameter and material is removed between surface finish quality
Contact, technological parameter includes pressure, flow speed, abrasive material viscosity, concentration, size, workpiece shapes and abrasive flows mode, and these are all
The performance of abrasive flows can be affected；Through studying the geometric properties in multiple holes, find outside hole more than the metal removal rate within hole
30%, i.e. produce quasi-rounding phenomenon；Checking elaborates the mechanical behavior in the characteristic performance of macromolecule carrier and the course of processing,
Show that temperature is the most extremely important to the performance of abrasive flows；Have studied the rheological property of abrasive flows, draw the viscosity coefficient pair of abrasive material
It is machined with impact；The temperature of abrasive material is obtained not above 80 DEG C by Experimental comparison；By Abrasive Flow Machining many times
Experiment work, through a large amount of fluid recipes researchs and engineer testing, achieves important breakthrough, first in the development of hydroabrasive
Utilize solid acid sodium plasticizer that toughness is strengthened, then utilize silicone oil colloid as binding agent to change the moistening of colloid surface
Angle, be allowed to not with workpiece adhesion, finally utilize the abrasive material of new preparation that workpiece has been carried out processing experiment.
The selection principle of 1 underlying carrier
That formula designs it is crucial that selection, collocation, consumption, mixing elemental, surface seems very simple, in fact comprises
The contact of a lot of inherences, want to design good processability, good economy performance formula by no means easy, need to consider because of
Element is a lot.
The development of elastic fluid soft abrasiye, it is preferred that emphasis is selecting underlying carrier, carrier will during abrasive flow machining
Form the biggest shear stress, if the strength of materials of medium starts to reduce, it is impossible to admittedly enclose abrasive particle as binding agent, then can make
Abrasive particle is become to depart from matrix, it is impossible to form effective cutting edge.Firstly, since the machining feature of abrasive flows, so the composition selected
Viscoelasticity, and the requirement of adhesion workpiece should be reached；Second, if the flowing of abrasive material and processing characteristics are bad, then will very
The rare surface quality arrived, answers the macromolecule that selecting liquidity is good as underlying carrier；3rd, between the composition of abrasive material carrier
Necessary chemical property is compatible, get along well abrasive particle, workpiece generation chemical reaction, and is simple to manufacture；4th, abrasive flow machining mistake
Cheng Zhong, be by the biggest shearing force, and the carrier that all these compositions are combined into needs stable mechanical performance and physical property
Can, economy and durability.
1. viscoelasticity
Viscoelasticity, as the term suggests, these materials to the response forms of external force between viscous liquid and the behavior of elastic solid (Hookean body)
Between.Abrasive material is uniformly mixed by viscoelasticity polymer colloid and abrasive particle, presents viscoelasticity characteristic and available abrasive machining
Polishing.If work in-process viscosity is not enough or causes and can not well wrap up abrasive particle and be processed, elastic deficiency then can cause rounding
Cross the defects such as throwing.
2. wearability and stability
For different high molecular polymers in process of the test, for aluminum component and 45 steel parts, the abrasive surface of different medium
The raising of roughness is respectively 17%, 22%, 35%, 58%, 70% and 6%, 11%, 31%, 40%, 50%.Can be seen that
Silica gel reduces best performance in wear-resisting, temperature-insensitive and the roughness of abrasive material.
3. the selection of additive
For improving the mobile performance of matrix, viscoelasticity and temperature-viscous characteristic, usually can add some in the base can optimize
The chemical mixture of substrate performance.This mixture can reduce the internal friction of butadiene-styrene rubber, promotes the movement of segment, and can carry
The physical and mechanical properties of high sizing material, improves the plasticity of macromolecule carrier, mobility, can improve the processability of abrasive material after interpolation
Energy.
4. the selection of abrasive particle
Positive so-called " a workman must first sharpen his tools if he is to do his work well ", abrasive particle mainly have carborundum, corundum, boron carbide, diamond and
CBN etc., the basic function of abrasive particle is as a polishing tool head.So as follows to abrasive particle basic function demand: abrasive particle serves as
The instrument of material is removed, it should higher than workpiece hardness from workpiece.As the main component of abrasive material, abrasive particle should be with other polymer
Compatible.The present invention selects tradition, economical and practical silicon-carbide particle as abrasive particle.
5. abrasives maker skill
First after adding silicone oil in blender, it is subsequently adding light oil, after being sufficiently stirred for reacting 4-5 hour with blender extremely
Gel, then resulting product is pulverized through pulverizer and is not allow for the appearance of bulk cluster of grains.Add plasticizer, soft the most successively
Agent and heat stabilizer, abrasive particle through magnetic separation, clean up after add feed box, after stirring.
6. abrasive nature analysis
Characterize rubber with moment of torsion, the viscosity of resinae is all feasible in theory and actual application.Because colloid viscosity
Relevant with intermolecular interaction, viscosity is the biggest, and moment of torsion is the biggest.Viscosity is an important indicator of abrasive material.Independent development abrasive material
One of purpose be the parameter that can adjust abrasive material to adapt to different machining shape, the workpiece of material, reach efficient, precise polished
Effect.
Experiment uses NDJ-8 type rotary viscosimeter to measure the viscosity of colloid under different plasticizer loading, by following
Reaction pot and temperature sensor control the temperature of abrasive material, observe 10 degrees Celsius, 20 degrees Celsius respectively, 30 degrees Celsius, 40 degrees Celsius,
50 degrees Celsius, torque value under 60 degree celsius temperature, thus characterize the variation tendency of viscosity.
7. the wear particle concentration impact on abrasive material viscosity
By verification experimental verification in the case of different quality mark abrasive material viscosity B coefficent, it can be seen that wear particle concentration is the highest,
The hardness of abrasive material, viscosity are the highest, and in the case of abrasive concentration is 20wt% proportioning, viscosity is minimum, along with concentration raising viscosity in
Existing growth trend；But abrasive concentration is in the case of 70wt%, owing to colloidal content is less, owing to colloid is wrapped in abrasive particle, abrasive particle
Colloid is separated into discontinuous segment, and moment of torsion diminishes on the contrary.
8. the temperature impact on abrasive material viscosity
Test uses reaction pot heating, and abrasive material is when 10 degrees Celsius, and the viscosity of different wear particle concentrations discloses along with temperature
Rising, the viscosity of abrasive material is on a declining curve.Since the animal migration of fluid boundary, it is not surprising that, the surface of liquid is opened by temperature
Power (or the interfacial tension between two liquid) has a significant impact.Owing to temperature raises, surface migration increases, it is clear that can increase
Add the total entropy on surface, thus reduce its free energy.Owing to the thermodynamic definitions on surface is g=AG/AA, have a negative temperature
Coefficient.For most of common liqs, it is all this situation including most of motlten metals and oxide thereof.Abrasive material is processed
Cheng Zhong, is acted on by shearing force, is equivalent to do abrasive material mechanical power, causes temperature also can raise, under viscosity after energy accumulation
Fall, consolidation parcel abrasive particle ability declines, and working ability weakens, and abrasive material is sensitive to temperature rise.Therefore need to control in the course of processing
The temperature rise of abrasive material.
The present invention starts with from the interfacial characteristics improving abrasive flows, have developed the preferable abrasive material of lubrication property, additive therefor
Nontoxic pollution-free, after processing, the oils such as the plasticizer that contains inside abrasive material, oil base is pressed in work with certain pressure to surface of the work
Part surface, surface of the work formed layer protective layer, can with antirust waterproof anti-oxidation, this be abrasive material constituent feature it
One, the most just achieve the rust-preventing characteristic on abrasive flow machining surface.The abrasive material of preparation has had adhesion surface of the work, service life
The advantages such as length, easy cleaning, processing flexibility is good, can change formula within the specific limits and arbitrarily regulate viscosity.Have studied temperature to mill
The impact of material viscosity, result shows, along with the rising of temperature, abrasive material viscosity presents downward trend, it is indicated that temperature control for
Workpiece processing quality, the importance of raising working (machining) efficiency.Abrasive Flow Machining is the new technology grown up in Surface Machining,
It is to reach deburring, polishing, chamfering and removal again by semi-solid hydroabrasive is pressed through workpiece work surface
The purpose of cast layer.
Abrasive fluid elastic grinding material is that the media such as diamond micropowder, boron carbide, CBN, corundum, SIC are blended according to a certain percentage
The elastic fluid abrasive material produced, has high fluidity, high resiliency, high cutting force and adhesion workpiece and recycles the most for a long time
Feature, these various powder polishing materials being different from market, this abrasive material is circulation abrasive material, without dust, volatilizees, spills.
Granularity select need to consider because of have three, first is the minimum clearance of the channel cross-section of work piece, general selected by granule chi
Very little the 1/5 of the gap, cross section that should be less than, the minimum gap of such as aluminium section bar mould be 1mm ±, selected granularity be preferably greater than 60 mesh；Second
Being grinding efficiency, granularity the most then efficiency is high；3rd is the surface roughness being ground face, and granule is the thickest, then abradant surface is coarse
Spend the biggest；This three aspect need to consider.
For non-hardenable steel and the grinding of non-ferrous metal part, can be selected for white fused alumina matter abrasive material；For hardened steel, mould steel
Conventional silicon carbide abrasive material；Hard part diamond matter and cubic boron nitride abrasive materials high for hard alloy class.
PCMA elastic fluid soft abrasiye uses special High Density Molecular elastomeric material, carries out abrupt in conjunction with diamond micropowder
The elastic solid (Hookean body) soft abrasiye of the High Density Molecular structure produced, has pliability big (just as the softness of skin mud), elastic
By force, good mechanical property, hardness is big, and intensity is high, it is adaptable to metal material tool steel (SKD11 etc.), high-speed steel (HSS, SKH9
Deng), all kinds of high, normal, basic carbon steel, steel alloy, aluminum, copper, stannum, cast iron etc., nonmetallic materials glass, pottery, stone material, graphite,
The surface of the workpiece such as Magnet, Colophonium internal chamber wall micro-polishing mirror process, inside and outside workpiece, uniform micro-loss, does not remain abrasive material, life-span
Long, mirror finish can be controlled and process.
Abrasive fluid elastic grinding material formula of the present invention and fabrication and processing technique, the abrasive material viscoelasticity that it makes is good,
Adhesion workpiece, good fluidity, good processability, chemical property is compatible, has stable mechanical performance and physical property,
And economy and durability, nontoxic pollution-free..
The above is only the better embodiment of the present invention, thus all according to the structure described in present patent application scope,
The equivalence that feature and principle are done changes or modifies, in the range of being all included in present patent application.
Claims (10)
1. abrasive fluid elastic grinding material formula and fabrication and processing technique, it is characterised in that its formula is: matrix percentage
For 15%-35%；Solvent naphtha percentage 0-55%；Plasticizer percentage 3%-10%；Softening agent percentage
5%-7%；Heat stabilizer percentage 2%-3%；Abrasive particle percentage 20%-70%；Its fabrication and processing technique is:
1, in blender add matrix, 2, add solvent naphtha, 3, be sufficiently stirred for blender after take out, 4, reaction 4-5 hour, 5, use
Pulverizer is pulverized, and 6, add plasticizer, 7, add softening agent, 8 add heat stabilizers, and 9, add abrasive particle, 10, stir.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described base
Body is silicone oil.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described molten
Agent oil is light oil.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described increasing
Moulding agent is naphthenic oil.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described institute
Stating softening agent is white oil.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described heat
Stabilizer is stearic acid sodium.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described mill
Grain is diamond.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described mill
Grain is boron carbide.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described mill
Grain is carborundum.
Abrasive fluid elastic grinding material formula the most according to claim 1 and fabrication and processing technique, it is characterised in that: described
Abrasive particle is Brown Alundum.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112917398A (en) * | 2021-03-30 | 2021-06-08 | 南京航太机电有限公司 | Viscoelastic fluid soft abrasive for abrasive particle flow finishing processing on surface of difficult-to-process material |
| CN113583629A (en) * | 2021-07-12 | 2021-11-02 | 南京航太机电有限公司 | Magnetic soft elastic abrasive for abrasive flow processing and preparation method thereof |
| CN114231898A (en) * | 2021-12-24 | 2022-03-25 | 中国电子科技集团公司第十四研究所 | High-precision high-wear-resistance titanium alloy gear forming method |
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| CN112917398A (en) * | 2021-03-30 | 2021-06-08 | 南京航太机电有限公司 | Viscoelastic fluid soft abrasive for abrasive particle flow finishing processing on surface of difficult-to-process material |
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| CN114231898A (en) * | 2021-12-24 | 2022-03-25 | 中国电子科技集团公司第十四研究所 | High-precision high-wear-resistance titanium alloy gear forming method |
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