CN102729158B - Organic bond accumulative grinding material and method for preparing abrasive cloth by organic bond accumulative grinding material - Google Patents
Organic bond accumulative grinding material and method for preparing abrasive cloth by organic bond accumulative grinding material Download PDFInfo
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- CN102729158B CN102729158B CN201210240753.0A CN201210240753A CN102729158B CN 102729158 B CN102729158 B CN 102729158B CN 201210240753 A CN201210240753 A CN 201210240753A CN 102729158 B CN102729158 B CN 102729158B
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Abstract
The invention discloses an organic bond accumulative grinding material and a method for preparing an abrasive cloth by the organic bond accumulative grinding material. According to the method, organic polymer is used as a bonding agent; the single particle group of a grinding material is served as a main body, and an active heat absorbing material, an inorganic heat absorbing material, an inertia grinding supporting material and a lubricating material are integrated; and then low-temperature solidifying is carried out to obtain an accumulative grinding material unit with a similar regular shape; and an uniformly organized 'cold accumulative grinding material' is provided for the manufacture of the abrasive cloth and an abrasive belt. The invention also discloses two methods for manufacturing the accumulative grinding material into an accumulative grinding material abrasive cloth; and one of the methods is to adopt a slip-frequency rolling level distributing machine for uniformly levelly distributing the accumulative grinding material on the surface of a base body, therefore, the grinding efficiency of the abrasive belt is improved, the service life of a grinding tool is prolonged, and the surface quality of a workpiece is improved as well.
Description
Technical field
The present invention relates to the preparation method in abrasive band in abrasive material technical field, relate to specifically a kind of organic bond and pile up abrasive material and adopt the method for piling up abrasive material manufacture emery cloth.
Technical background
Traditional abrasive material, as grinding and polishing thing, is used as individual particle more and uses.
The abrasive band preparation method of prior art is: abrasive material is bonded on matrix with binding agent; Matrix is cloth, paper or complex matrix etc., and abrasive material is the simple grain abrasive material of each grain size number, is that individual layer is planted sand in the time making abrasive band, and its life-span is generally very short; With the consumption of individual layer abrasive material, scrap in whole abrasive band in abrasive band.
Tradition abrasive band is owing to being single layer of abrasive particles grinding, and abrasive particle is obviously inconsistent in grinding original state, intermediateness and terminal stage shape and grinding force, and therefore workpiece surface quality also has very big-difference, in use easily makes burned work-surface.
Summary of the invention
Object of the present invention provides just a kind of organic bond to pile up abrasive material and adopts the method for piling up abrasive material manufacture emery cloth for existing weak point in above-mentioned prior art, the present invention is taking organic polymer as bonding agent, taking abrasive material individual particle group as main body, comprises active heat-absorbing material, inorganic endothermic material, inertia grinding aid material, lubriation material and is integrated, adopts low-temperature setting, obtains approximate equivalance shape and pile up abrasive material unit; Manufacture " cold dome amass abrasive material " of even tissue is provided for abrasive band, thereby improve the grinding efficiency in abrasive band and the service life of raising grinding tool, improve the surface quality of workpiece simultaneously.
Object of the present invention can realize by following technique measures:
Material composition and preparation process that organic bond of the present invention is piled up abrasive material are as follows:
A, get by weight: particle diameter is abrasive material individual particle group 50 ~ 85%, organic polymer bonding agent 7 ~ 35%, wetting agent 5 ~ 25%, active heat-absorbing material 1 ~ 30%, hibbsite 1 ~ 10%, inertia grinding aid material 2 ~ 35% and lubriation material 0 ~ 5% as inorganic endothermic material, additive 0 ~ 8%, the sense electrostatic material 0 ~ 5% of 16 microns ~ 350 microns; And the percentage by weight sum of above-mentioned raw materials is absolutely;
B, adopt any one method in following a, b or c to be prepared:
A, powder section during A step is drawn materials mix, and put into granulator; Liquid part substep in afterwards A step being drawn materials adds granulation, make the accumulation abrasive material of approximate equivalance shape, following dry at 100 DEG C, screening obtains particle diameter at 0.15 ~ 3.35mm, conventional particle diameter is at the particle of the approximate equivalance shape of 0.3 ~ 1mm, products obtained therefrom is completely curing below 125 DEG C ~ 185 DEG C of maximum temperatures, then sieve, particle diameter is controlled at required scope; Obtain organic bond and pile up abrading-body;
B, powder section during A step is drawn materials mix, and put into mixing equipment; Liquid part in afterwards A step being drawn materials adds batch mixing, make half moistening material, put into granulator and make the accumulation abrasive material of approximate equivalance shape, following dry at 100 DEG C, screening obtains particle diameter at 0.15 ~ 3.35mm, and conventional particle diameter is at the particle of the approximate equivalance shape of 0.3 ~ 1mm, and products obtained therefrom is completely curing below 125 DEG C ~ 185 DEG C of temperature, sieve, particle diameter is controlled at required scope again; Obtain organic bond and pile up abrading-body;
C, powder section during A step is drawn materials mix, and put into mixing equipment; Liquid part in afterwards A step being drawn materials adds batch mixing, makes half moistening material, puts into mould and is pressed into laminated structure, following dry at 100 DEG C; By products obtained therefrom fragmentation, screening, required accumulation abrasive grain particle diameter is controlled to 0.15 ~ 3.35mm, and conventional particle diameter is at the particle of the approximate equivalance shape of 0.3 ~ 1mm, and products obtained therefrom is completely curing below 125 DEG C ~ 185 DEG C of maximum temperatures, sieve, particle diameter is controlled at required scope again; Obtain organic bond and pile up abrading-body.
Abrasive material individual particle described in the present invention is taken from any one or the two or more mixture in brown corundum, white fused alumina, pink fused alumina, carborundum or fused alumina zirconia.
Organic polymer bonding agent of the present invention is taken from any one in phenolic resins, Lauxite; And any one that described organic polymer bonding agent is liquid or powdery or mixture.
Wetting agent of the present invention is taken from any one or the mixture in butanone class, butanols class or water.
Active heat-absorbing material of the present invention is fluorine-containing slaine: take from any one or mixture in ice crystal, potassium fluoborate or sodium fluoborate; The heat absorption principle of described active heat-absorbing material is as follows: containing borofluoride heat fusing, impel abrasive particle easily to come off, to prevent the obstruction in abrasive band, and it separates out fluorine, is conducive to the grinding of steel, while being adapted to grinding especially without the dry grinding abrasive band of cooling fluid; Emit in conjunction with water simultaneously, play cooling, heat-absorbing action.
Inorganic endothermic material of the present invention is hibbsite, and molecular formula is Al(OH) 3; The heat absorption mechanism of described inorganic endothermic material is as follows: hibbsite thermal dehydration starts temperature, maximum endothermic peak, plays anti-static electrification simultaneously.
Inertia grinding aid material of the present invention is taken from any one or the mixture in calcium carbonate, calcium sulfate, wollastonite or talcum powder.
Lubriation material of the present invention is taken from any one or the mixture in the slaine of graphite, talcum powder, dolomol, land plaster etc.
Additive of the present invention is taken from any one or mixture of coupling agent, pigment, dyestuff, curing agent or plasticizer; Coupling agent is taken from KH550, any one in KH560; The organic pigments such as pigment is taken from inorganic salts and the carbon blacks such as the oxide, sulfide, sulfate, chromate, molybdate of metal, the blue or green pigment of phthalein; Dyestuff is taken from high temperature resistant dyestuff; Curing agent is taken from any one of ammonium chloride, zinc chloride, ammonium nitrate, ammonium sulfate; Plasticizer is taken from any one in potter's clay, spoil, aluminium dihydrogen phosphate, calcium lignosulfonate.
Sense electrostatic material of the present invention is taken from any one or mixture of graphite, mica, iron powder or copper powder; It can make abrasive particle plant sand by electrostatic means.
The preparation process of accumulation grinding sandcloth of the present invention is as follows:
A, following material is made to primer, be coated on base material after treatment; Described primer is taken from any one in following two kinds of primers, wherein a kind of is to be prepared from by the raw material of following weight ratio: as the phenolic resins 55 ~ 75% of bonding agent, as the calcium carbonate 25 ~ 45% of grinding aid material, as the surfactant 0.1 ~ 0.5% of additive; A kind of is to be prepared from by the raw material of following weight ratio: epoxy resin 37 ~ 57%, curing agent 19 ~ 29%, diluent 14 ~ 44%; Described surfactant is taken from Tween-20, and described curing agent is taken from polyamide 6 50, and described diluent is taken from toluene, butanols; And the percentage by weight sum of above-mentioned raw materials is absolutely;
Accumulation abrasive material is evenly implanted in substrate material surface by b, employing electrostatic sand-planting machine; Or through slippage roll extrusion spreader, accumulation abrasive material is evenly divided on matrix surface again after adopting gravity to plant sand;
C, through planting after sand, after primary drying, apply again one deck and be mixed and made into multiple glue by bonding agent, grinding aid material, additive, wherein said multiple glue is to be prepared from by the raw material of following weight ratio: as the phenolic resins 55 ~ 90% of bonding agent, as the calcium carbonate 10 ~ 45% of grinding aid material, as the surfactant 0.1 ~ 0.5% of additive, iron oxide 1 ~ 8%, wherein said surfactant is taken from Tween-20, and the percentage by weight sum of above-mentioned raw materials is absolutely; Rolling after redrying, and then become rule accumulation grinding material coating grinding tools product through curing, flexure; Wherein primary drying temperature is at 65 DEG C ~ 105 DEG C, and the time is controlled at 30min ~ 90min; Redrying temperature is at 65 DEG C ~ 95 DEG C, and the time is controlled at 120min ~ 180min.
Beneficial effect of the present invention is as follows:
Abrasive material accumulation body of the present invention, inside includes the cooling material that can absorb grinding heat, has realized " cold dome amasss abrasive material ", uses different material mixture ratios, and in conjunction with the adjustment of grinding force, workpiece is not burnt when reaching grinding; The emery cloth produced due to the long-pending abrasive material of cold dome, the abrasive band product abrasive particle quantity on effective grinding face thickness is most doubly and even decades of times than monolayer of particles, therefore greatly improves the service life, raising grinding efficiency of coated abrasive tool, improves the surface quality of workpiece and the self-consistentency of ground effect simultaneously.This invention will provide the organic bond abrasive material accumulation body of high-quality for coated abrasive tool, this product is not got rid of other grinding tools such as being applied to emery wheel, oilstone, polishing abrading block simultaneously.
Brief description of the drawings
Fig. 1: approximate ball-type equivalance shape is piled up abrasive grain.
In figure: 101, basic abrasive material; 102, active heat-absorbing material; 103, inertia grinding aid material; 104, lubriation material; 105, add material; 106, organic bond.
Fig. 2: nearly equivalance shape is piled up abrasive grain.
In figure: 201, basic abrasive material; 202, active heat-absorbing material; 203, inertia grinding aid material; 204, lubriation material; 205, add material; 206, organic bond.
Fig. 3 is emery cloth production equipment flow chart.
In figure: 301, put yardage roll; 302, a gluing; 303, electrostatic sand-planting; 304, antistatic conveyer belt; 305, sandbox A; 306, receive sand device; 307, sandbox B; 308, gravity is planted sand device; 309, slippage roll extrusion spreading out device; 310, primary drying; 311, multiple glue; 312, redrying; 313, rolling.
Fig. 4 is slippage roll extrusion spreader principles and structure figure in Fig. 3.
In figure: 401, motor; 402, belt pulley; 403, belt; 404, rule is piled up abrasive material; 405, the upper matrix of crossing primer; 406, negative pulley wheel; 407, gear 1; 408, roller; 409, gear 2; 410, bearing block; 411, support; 412, smooth accumulation grinding sandcloth later.
Fig. 5 is the almost spherical accumulation grinding sandcloth schematic diagram of planting sand through gravity.
In figure: 501, matrix; 502, matrix transition zone; 503, pile up abrasive material; 504, primer; 505 multiple glue.
Fig. 6 piles up grinding sandcloth schematic diagram through the equivalance shape of electrostatic sand-planting.
In figure: 601, matrix; 602, matrix transition zone; 603, pile up abrasive material; 604, primer; 605, multiple glue.
Fig. 7: 125 μ m individual layer abrasive materials and the comparison of accumulation abrasive grinding.
Wherein grinding force is 35N, workpiece material: 45# steel, abrasive material is: brown corundum, sbrasive belt grinding residual thickness is in table one.
Grinding method: emery cloth is made to the endless abrasive belt that specification is 50*2100mm, carry out grinding test.
Fig. 8: 46.2 μ m individual layer abrasive materials and the comparison of accumulation abrasive grinding.
Grinding method: emery cloth is made to the endless abrasive belt that specification is 50*2100mm, carry out grinding test; Wherein grinding force is 28N, workpiece material: stainless steel 304, abrasive material is: brown corundum, sbrasive belt grinding residual thickness is in table one.
Fig. 9: 200 μ m individual layer abrasive materials and the comparison of accumulation abrasive grinding.
Grinding method: emery cloth is made to the endless abrasive belt that specification is 50*2100mm, carry out grinding test.Wherein grinding force is 28N, workpiece material: stainless steel 304, abrasive material is: brown corundum, sbrasive belt grinding residual thickness is in table one.
Figure 10: 58 μ m pile up grinding sandcloth and the comparison of individual layer grinding sandcloth accumulative total stock removal.
Grinding method: emery cloth is made to the disk sand that diameter is 100mm, use pneumatic tool grinding, identical grinding condition obtains.Workpiece material: stainless steel 304, abrasive material is: brown corundum.
Figure 11: 58 μ m pile up the ratio with individual layer emery cloth accumulative total stock removal.
Grinding method: emery cloth is made to the disk sand that diameter is 100mm, use pneumatic tool grinding, identical grinding condition obtains.Workpiece material: stainless steel 304, abrasive material is: brown corundum.
Figure 12: 46.2 μ m individual layers, carborundum are piled up, brown corundum is piled up three kinds of emery cloth mill stainless steel accumulative total stock removals.
Grinding method: emery cloth is made to the disk sand that diameter is 100mm, use pneumatic tool grinding, identical grinding condition obtains.Workpiece material: stainless steel 304, individual layer abrasive material is: brown corundum.
detailed description of the invention
The present invention is further described below with reference to embodiment:
Material composition and preparation process that organic bond of the present invention is piled up abrasive material are as follows:
Embodiment 1:
Adopt a step to prepare organic bond and pile up abrading-body: by 10Kg average grain diameter be: the brown corundum of 35 μ m mixes 15 minutes with adding powdered phenol-formaldehyde resin 2.5Kg, wollastonite 0.3Kg, ice crystal 0.2Kg, aluminum oxide 0.25Kg, graphite 0.5Kg, pigment iron oxide red 0.04Kg, potter's clay 0.25Kg, then put into granulator, add 0.2Kg n-butanol and suitable quantity of water, making diameter is the spherical of 0.5 ~ 0.6mm or equivalance shape; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).
Embodiment 2:
Adopt a step to prepare organic bond and pile up abrading-body: by 5Kg average grain diameter be: brown corundum and the 5Kg average grain diameter of 35 μ m are: the carborundum of 35 μ m, add powdered phenol-formaldehyde resin 2.5Kg, calcium carbonate 0.5Kg, ice crystal 0.15Kg, aluminum oxide 0.2Kg, mica powder 0.5Kg, potter's clay 0.25Kg to mix 15 minutes, then put into granulator, add 0.2Kg n-butanol and suitable quantity of water, making diameter is the spherical of 0.5 ~ 0.6mm or equivalance shape; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).
Embodiment 3:
Adopt a step to prepare organic bond and pile up abrading-body: by 10Kg average grain diameter be: the carborundum of 46.2 μ m, add powdered phenol-formaldehyde resin 2.5Kg, wollastonite 0.2Kg, ice crystal 0.15Kg, aluminum oxide 0.2Kg, iron powder 0.5Kg, potter's clay 0.25Kg to mix 15 minutes, then put into granulator, add the mixed liquor of 0.2Kg ethanol, 0.1Kg coupling agent KH550, add suitable quantity of water, making diameter is the spherical of 0.5 ~ 0.6mm or equivalance shape again; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).
Embodiment 4:
Adopt a step to prepare organic bond and pile up abrading-body: by 10Kg average grain diameter be: the brown corundum of 58 μ m, add powdered phenol-formaldehyde resin 2.5Kg, wollastonite 0.2Kg, ice crystal 0.15Kg, aluminum oxide 0.2Kg, iron powder 0.5Kg, graphite 0.2Kg, potter's clay 0.25Kg to mix 15 minutes, then put into granulator, add 0.2Kg ethanol, 0.1Kg, add suitable quantity of water, making diameter is the spherical of 0.5 ~ 0.6mm or equivalance shape again; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).
Embodiment 5:
Adopt a step to prepare organic bond and pile up abrading-body: by 10Kg average grain diameter be: the brown corundum of 46.2 μ m mixes 15 minutes with adding powdery urea resin 2.5Kg, wollastonite 0.3Kg, ice crystal 0.2Kg, aluminum oxide 0.25Kg, graphite 0.5Kg, potter's clay 0.25Kg, then put into granulator, adding concentration is that 1.25% ammonium chloride solution is appropriate, and making diameter is the spherical of 0.5 ~ 0.6mm or equivalance shape; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).
Embodiment 6:
Adopt a step to prepare organic bond and pile up abrading-body: by 10Kg average grain diameter be: the brown corundum of 125 μ m, add powdered phenol-formaldehyde resin 2.0Kg, wollastonite 0.2Kg, ice crystal 0.3Kg, aluminum oxide 0.25Kg, potter's clay 0.25Kg, iron powder 0.3Kg, dolomol 0.02Kg, the blue or green blue 0.02Kg of phthalein to mix 15 minutes, then put into granulator, add 0.2Kg n-butanol and suitable quantity of water, making diameter is the spherical of 0.7 ~ 0.85mm or equivalance shape; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).Be made into emery cloth, making the endless abrasive belt that specification is 50*2100mm, carry out grinding test.Obtain the grinding result of Fig. 7, from scheming, pile up the stock removal in abrasive material abrasive band fewer a little than individual layer sbrasive belt grinding amount in initial 32 minutes, but the residual thickness in accumulation abrasive material abrasive band is a lot of, (individual layer abrasive material residual thickness is 0.14mm; Piling up abrasive material abrasive band abrasive material residual thickness is 0.72mm), its life-span theory should be approximately 5 times of individual layer.
Embodiment 7:
Adopt a step to prepare organic bond and pile up abrading-body: be that the brown corundum of 46.2 μ m and the powdered phenol-formaldehyde resin of 1.2Kg, calcium carbonate 2Kg, potassium fluoborate 0.15Kg, ammonium chloride 0.02Kg put into powder batch mixer premix 15 minutes by 10Kg median particle diameter d50, then put into granulator, adding appropriate proportion is 1.05 calcium lignosulfonate solution, and making diameter is the spherical of 0.7 ~ 0.85mm or equivalance shape; Through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).Be made into emery cloth, making the endless abrasive belt that specification is 50*2100mm, carry out grinding test.Obtain the grinding result of Fig. 8, from scheming, in initial 12 minutes, the life-span in individual layer abrasive material abrasive band terminates, but the stock removal of piling up abrasive material abrasive band compares close to constant at certain numerical value, it is consistent that its workpiece surface quality remains, the residual thickness that its grinding 30 minutes is is: 0.73mm, its life-span theory should be more than ten times of individual layer.
Embodiment 8:
Adopt b step to prepare organic bond and pile up abrading-body: be that the brown corundum of 200 μ m and the liquid phenolic resin of 0.4Kg are put into conventional single pot of adverse current batch mixer premix 10 minutes by 10Kg average grain diameter, add the mixture of powdered resin 1Kg, wollastonite 0.3Kg, ice crystal 1.2Kg, aluminum oxide 0.5Kg, graphite 0.5Kg, mix 5 minutes, place No. 20 screen clothes of mistake after 2 hours, then put into granulator, add suitable quantity of water, making diameter is the spherical of 0.7 ~ 0.85mm or equivalance shape; See Fig. 1.Again through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).Be made into emery cloth, making the endless abrasive belt that specification is 50*2100mm, carry out grinding test.Obtain the grinding result of Fig. 9, from scheming, in initial 28 minutes, pile up the stock removal in abrasive material abrasive band fewer a little than individual layer sbrasive belt grinding amount, stablize grinding state but enter soon, a lot (individual layer abrasive material residual thickness is 0.28mm to the residual thickness in accumulation abrasive material abrasive band; Piling up abrasive material abrasive band abrasive material residual thickness is 0.69mm), its life-span theory should be approximately 3 times of individual layer, therefore can obtain very long abrasive band of life-span, and this,, except abrasive band is manufactured and had certain requirement, depends primarily on accumulation abrading-body.
Embodiment 9:
Adopt b step to prepare organic bond and pile up abrading-body: be that the brown corundum of 125 μ m and the liquid phenolic resin of 0.6Kg are put into conventional single pot of adverse current batch mixer premix 10 minutes by 10Kg average grain diameter, add the mixture of powdered resin 1.0Kg, calcium carbonate 2Kg, potassium fluoborate 0.15Kg, aluminum oxide 0.5Kg to mix 5 minutes; Place after 12 hours and to cross No. 20 screen clothes, then put into granulator, adding proportion is 1.05 phosphate dihydrogen aluminum solution 1.60Kg, and making diameter is the spherical of 0.7 ~ 0.85mm or equivalance shape; See Fig. 1.Again through 85 DEG C dry 6 hours, 120 DEG C dry 4 hours, 185 DEG C solidify 4 hours, then sieve, and can obtain organic accumulation abrading-body (referring to Fig. 1).
Embodiment 10:
Adopt c step to prepare organic bond and pile up abrading-body: be that the brown corundum of 46.2 μ m is put into single pot of batch mixer with calcium carbonate 2Kg, potassium fluoborate 0.15Kg, land plaster 0.1Kg, liquid phenolic resin 1Kg and mixed 15 minutes by 10Kg median particle diameter d50,725g material is put into mould to be pressed into diameter be 200mm at every turn, and thickness is the large sheet of 10mm; Or through pair roller, material is pushed in the form of sheets, after 85 DEG C are dried 4 hours, more broken, screening, required accumulation abrasive grain particle diameter is controlled to 0.7 ~ 0.85mm; Then 120 DEG C dry 4 hours, after 185 DEG C solidify 4 hours, broken, screening again, particle diameter is controlled within the scope of required 0.7 ~ 0.85mm; Obtain organic accumulation abrading-body (cold dome amasss abrasive material) of organic bond.See Fig. 2.
The preparation process of accumulation grinding sandcloth of the present invention is as follows:
A, following material is made to primer, be coated on base material after treatment; Described primer is taken from any one in following two kinds of primers, wherein a kind of is to be prepared from by the raw material of following weight ratio: as the phenolic resins 55 ~ 75% of bonding agent, as the calcium carbonate 25 ~ 45% of grinding aid material, as the surfactant 0.1 ~ 0.5% of additive; A kind of is to be prepared from by the raw material of following weight ratio: epoxy resin 37 ~ 57%, curing agent 19 ~ 29%, diluent 14 ~ 44%; Described surfactant is taken from Tween-20, and described curing agent is taken from polyamide 6 50, and described diluent is taken from toluene, butanols;
Accumulation abrasive material is evenly implanted in substrate material surface by b, employing electrostatic sand-planting machine; Or through slippage roll extrusion spreader, accumulation abrasive material is evenly divided on matrix surface again after adopting gravity to plant sand;
C, through planting after sand, after primary drying, apply again one deck and be mixed and made into multiple glue by bonding agent, grinding aid material, additive, wherein said multiple glue is to be prepared from by the raw material of following weight ratio: as the phenolic resins 55 ~ 90% of bonding agent, as the calcium carbonate 10 ~ 45% of grinding aid material, as the surfactant 0.1 ~ 0.5% of additive, iron oxide 1 ~ 8%, wherein said surfactant is taken from Tween-20; Rolling after redrying, and then become rule accumulation grinding material coating grinding tools product through curing, flexure; Wherein primary drying temperature is at 65 DEG C ~ 105 DEG C, and the time is controlled at 30min ~ 90min; Redrying temperature is at 65 DEG C ~ 95 DEG C, and the time is controlled at 120min ~ 180min.
Embodiment 11: gravity is planted sand method and produced accumulation grinding sandcloth
Be phenolic resins 60% in connection with agent, grinding aid material is calcium carbonate 39.8%, additive is after surfactant 0.2% mixes, make primer, be coated on base material after treatment (see in Fig. 3 301) through primer machine (see in Fig. 3 302), through gravity sand-planting machine (see in Fig. 3 308), be implanted on matrix piling up abrasive material in embodiment 9, through slippage roll extrusion spreader (seeing Fig. 3 309), accumulation abrasive material is evenly divided on matrix surface again, through primary drying stove (see in Fig. 3 310), primary drying temperature 70 DEG C 15 minutes, 80 DEG C 30 minutes, 95 DEG C 30 minutes, 105 DEG C 15 minutes, again in connection with agent phenolic resins 70%, grinding aid material is calcium carbonate 22.8%, additive is surfactant 0.2%, after iron oxide 7% grade is mixed, make multiple glue, through the multiple glue of multiple glue machine (see in Fig. 3 311), again enter redrying stove (see in Fig. 3 312), redrying temperature 75 DEG C 15 minutes, 80 DEG C 45 minutes, 90 DEG C 45 minutes, 95 DEG C 45 minutes, rolling after bone dry (see in Fig. 3 313), and then through 120 DEG C of maximum temperatures solidify, flexure becomes rule and piles up grinding sandcloth.
Embodiment 12: electrostatic sand-planting method is produced and piled up grinding sandcloth
Be phenolic resins 60% in connection with agent, grinding aid material is calcium carbonate 39.8%, additive is after surfactant 0.2% mixes, make primer, be coated on base material after treatment (see in Fig. 3 301) through primer machine (see in Fig. 3 302), after electrostatic sand-planting (see in Fig. 3 303), see Fig. 3 A through track route A(), the equivalance abrasive material in embodiment 4 is implanted on matrix; Enter primary drying stove, through primary drying stove (see in Fig. 3 310), primary drying temperature 70 DEG C 15 minutes, 80 DEG C 30 minutes, 95 DEG C 30 minutes, 105 DEG C 15 minutes; Again in connection with agent phenolic resins 70%, grinding aid material is calcium carbonate 22.8%, additive is surfactant 0.2%, after iron oxide 7% grade is mixed, through the multiple glue of multiple glue machine (see in Fig. 3 311), again enter redrying stove (see in Fig. 3 312), redrying temperature 75 DEG C 15 minutes, 80 DEG C 45 minutes, 90 DEG C 45 minutes, 95 DEG C 45 minutes, rolling after bone dry (see in Fig. 3 313); And then through 120 DEG C of maximum temperatures solidify, flexure becomes rule and piles up grinding sandcloth.
The emery cloth made distributes and makes the disk sand that endless abrasive belt that specification is 50*2100mm and diameter are 100mm and carry out grinding test.The endless abrasive belt of making specification and be 50*2100mm obtains the grinding result of Fig. 7 to Fig. 9; Grinding condition: abrasive band linear velocity: 39 meter per seconds; Grinding method: contact wheel; Grinding force: 37N, 34N, 28N, the grinding time: see each figure.The disk sand of making diameter and be 100mm obtains the grinding result of Figure 10 to Figure 12; Grinding condition: use pneumatic tool grinding, the air pressure of 0.62Mp, identical grinding condition obtains.
From the situation of the residue grinding layer of emery cloth, the life-span of piling up grinding sandcloth is very long, and this,, except abrasive band is manufactured and had certain requirement, depends primarily on the quantity of participating in grinding abrasive grain.
Grinding situation gathers and refers to following table:
Table one
Claims (10)
1. organic bond is piled up an abrasive material, it is characterized in that: material composition and the preparation process of described accumulation abrasive material are as follows:
A, get by weight: particle diameter is abrasive material individual particle group 50 ~ 85%, organic polymer bonding agent 7 ~ 35%, wetting agent 5 ~ 25%, active heat-absorbing material 1 ~ 30%, hibbsite 1 ~ 10%, inertia grinding aid material 2 ~ 35% and lubriation material 0 ~ 5% as inorganic endothermic material, additive 0 ~ 8%, the sense electrostatic material 0 ~ 5% of 16 microns ~ 350 microns; And the percentage by weight sum of above-mentioned raw materials is absolutely;
B, adopt any one method in following a, b or c to be prepared:
A, powder section during A step is drawn materials mix, and put into granulator; Liquid part substep in afterwards A step being drawn materials adds granulation, make the accumulation abrasive material of approximate equivalance shape, following dry at 100 DEG C, screening obtains the particle of particle diameter the approximate equivalance shape of 0.15 ~ 3.35mm, products obtained therefrom is completely curing below 185 DEG C of maximum temperatures, sieve again, obtain required particle diameter and pile up abrasive material;
B, powder section during A step is drawn materials mix, and put into mixing equipment; Liquid part in afterwards A step being drawn materials adds batch mixing, make half moistening material, put into granulator and make the accumulation abrasive material of approximate equivalance shape, following dry at 100 DEG C, screening obtains the particle of particle diameter the approximate equivalance shape of 0.15 ~ 3.35mm, products obtained therefrom is completely curing below 185 DEG C of maximum temperatures, then sieve, obtain required particle diameter and pile up abrasive material;
C, powder section during A step is drawn materials mix, and put into mixing equipment; Liquid part in afterwards A step being drawn materials adds batch mixing, makes half moistening material, puts into mould and is pressed into laminated structure, following dry at 100 DEG C; By products obtained therefrom fragmentation, screening, required accumulation abrasive grain particle diameter is controlled to the particle of the approximate equivalance shape of 0.15 ~ 3.35mm, products obtained therefrom is completely curing below 185 DEG C of maximum temperatures, then sieve, obtain required particle diameter and pile up abrasive material.
2. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described abrasive material individual particle is taken from any one or the two or more mixture in brown corundum, white fused alumina, pink fused alumina, carborundum or fused alumina zirconia.
3. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described organic polymer bonding agent is taken from any one in phenolic resins, Lauxite; And any one that described organic polymer bonding agent is liquid or powdery or mixture.
4. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described wetting agent is taken from any one or the mixture in butanone class, butanols class or water.
5. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described active heat-absorbing material is fluorine-containing slaine: take from any one or mixture in ice crystal, potassium tetrafluoroborate or sodium fluoborate.
6. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described inertia grinding aid material is taken from any one or the mixture in calcium carbonate, calcium sulfate, wollastonite or talcum powder.
7. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described lubriation material is taken from any one or the mixture in graphite or talcum powder.
8. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described additive is taken from any one or mixture of coupling agent, pigment, dyestuff or plasticizer; Coupling agent is taken from KH550, any one in KH560; Plasticizer is taken from any one in potter's clay, spoil, aluminium dihydrogen phosphate, calcium lignosulfonate.
9. organic bond according to claim 1 is piled up abrasive material, it is characterized in that: described sense electrostatic material is taken from any one or mixture of graphite, mica, iron powder or copper powder; Can make made accumulation abrasive material group energy plant sand by electrostatic means.
10. adopt and pile up abrasive material described in claim 1 and produce a method of piling up grinding sandcloth, it is characterized in that: the preparation process of described method is as follows:
A, following material is made to primer, be coated on base material after treatment; Described primer is taken from any one in following two kinds of primers, wherein a kind of is to be prepared from by the raw material of following weight ratio: as the phenolic resins 55 ~ 75% of bonding agent, as the calcium carbonate 25 ~ 45% of grinding aid material, as the surfactant 0.1 ~ 0.5% of additive; A kind of is to be prepared from by the raw material of following weight ratio: epoxy resin 37 ~ 57%, curing agent 19 ~ 29%, diluent 14 ~ 44%; Described surfactant is taken from Tween-20, and described curing agent is taken from polyamide 6 50, and described diluent is taken from toluene, butanols; And the percentage by weight sum of above-mentioned raw materials is absolutely;
Accumulation abrasive material is evenly implanted in substrate material surface by b, employing electrostatic sand-planting machine; Or through slippage roll extrusion spreader, accumulation abrasive material is evenly divided on matrix surface again after adopting gravity to plant sand;
C, through planting after sand, after primary drying, apply again one deck and be mixed and made into multiple glue by bonding agent, grinding aid material, additive, wherein said multiple glue is to be prepared from by the raw material of following weight ratio: as the phenolic resins 55 ~ 90% of bonding agent, as the calcium carbonate 10 ~ 45% of grinding aid material, as surfactant 0.1 ~ 0.5% and the iron oxide 1 ~ 8% of additive, wherein said surfactant is taken from Tween-20, and the percentage by weight sum of above-mentioned raw materials is absolutely; Rolling after redrying, and then become rule accumulation grinding material coating grinding tools product through curing, flexure; Wherein primary drying temperature is at 65 DEG C ~ 105 DEG C, and the time is controlled at 30min ~ 90min; Redrying temperature is at 65 DEG C ~ 95 DEG C, and the time is controlled at 120min ~ 180min.
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| CN114211411B (en) * | 2021-12-28 | 2022-09-13 | 江苏华东砂轮有限公司 | Large-size monocrystalline silicon piece ultra-precision machining polishing grinding wheel and preparation method thereof |
| CN116083051A (en) * | 2022-12-27 | 2023-05-09 | 白鸽磨料磨具有限公司 | Elastic composite abrasive and abrasive cloth and preparation method thereof |
| CN117821018B (en) * | 2024-03-01 | 2024-06-14 | 淄博市淄川金龙磨料磨具有限公司 | Preparation method of chrome corundum composite abrasive |
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