CN103964777B - The constructional method of parian material dry powder and the anti-skidding parian terrace of high light - Google Patents
The constructional method of parian material dry powder and the anti-skidding parian terrace of high light Download PDFInfo
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Abstract
The present invention relates to construction engineering technical field, aim to provide the constructional method of a kind of parian material dry powder and the anti-skidding parian terrace of high light.This parian material dry powder, comprises the component of following quality proportioning: silicate cement, 25 ~ 50%; Iron oxide pigment, 0 ~ 10%; Pigment extender, 0.5 ~ 5.65%; Grating natural colour sand, 38 ~ 69%; Defoamer, 0.05 ~ 0.3%; Water reducer, 0.05 ~ 0.45%.Material equipment involved in the present invention is easy to get, constructional method is simple to operation.The high light anti-skidding parian terrace cost manufactured is low, and energy environment consumes little.Organo siloxane composition with phenyl ring adds the glossiness of stiffening agent, makes the terrace after polishing reach marmorean gloss.Hydrophobic branch chain on silane, improves the water repellency of terrace, thus improves terrace non-skid property.
Description
Technical field
The present invention relates to construction engineering technical field, especially relate to the constructional method of a kind of parian material dry powder and the anti-skidding parian terrace of high light.
Background technology
Natural marble, with advantages such as high glosss after its naturally unique bag color, excellent wear resistance, polishing, becomes indoor high-grade decoration active material, is widely used in the decoration of the indoor terrace such as commercial location, enterprises and institutions.Along with China's Economic development, infrastructure construction drops in a large number, and the usage quantity of many lithotomes increases greatly.But lithotome is Nonrenewable resources, overexploitation not only causes the waste of part outstanding stone material exhausted, also havoc forest vegetation, and meanwhile, the dust of secondary industry, waste water and noise, also aggravate the deterioration of the ecological environment.
In addition, the ornamental natural marble of terrace in order to embody top grade, its surface all through polished finish, its glossiness general requirement (GB/T19766-2005) more than 70.And so, once there be water, smooth marble floorings has just become " rink ", and people will be made in an unguarded moment to slip, even inflicting bodily injury time serious.The anti-skid on ground requires to rise to law height by the country such as the U.S., Australia, promulgates that special bill carries out hard constraints.Relevant departments of China also recognize the seriousness of the anti-skidding problem in ground gradually.Beijing provincial standard DB11/T944-2012 starting in April, 2013 to perform explicitly calls for dry state frictional coefficient >=0.5, indoor plane non-slip floor, dry state frictional coefficient >=0.6, ground such as indoor entrance hall.
The stone material anti-slip technology such as marble, mainly increase surfaceness and apply anti-skidding treatment agent two class.The method increasing roughness is inapplicable on indoor decoration height light marble terrace.And also seldom there is the anti-skidding treatment agent product of the stone material simultaneously with anti-skidding and high light action in China.Imported product is price not only, and validity period is short, and recoat is frequent.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the defect of the loss of natural marble to environmental resources large, high light marble anti-skid difference in prior art, provides the constructional method of a kind of parian material dry powder and the anti-skidding parian terrace of high light.The parian terrace adopting this constructional method to prepare has Gao Guang, anti-skidding performance, and hardness is high, bag various colors, little to the consumption of resource environment, low cost.
For technical solution problem, solution of the present invention is:
A kind of parian material dry powder is provided, comprises the component of following quality proportioning:
Silicate cement, 25 ~ 50%;
Iron oxide pigment, 0 ~ 10%;
Pigment extender, 0.5 ~ 5.65%;
Grating natural colour sand, 38 ~ 69%;
Defoamer, 0.05 ~ 0.3%;
Water reducer, 0.05 ~ 0.45%;
Described silicate cement is one in ordinary Portland cement, early-strength type silicate cement, composite silica acid salt cement or white portland cement or its combination, strength grade be 42.5 and more than;
The purity of described iron oxide pigment is 99%, and fineness is 400 ~ 1000 orders;
Described pigment extender is one in calcium carbonate, titanium dioxide or zinc oxide or its combination, and fineness is 400 ~ 1000 orders;
Described grating natural colour sand refers to requirement according to the bag of institute's parian and the mixture of the natural colour sand of the different-grain diameter that level is allotted, different colours;
Described defoamer is one in metallic soap of stearic acid defoamer, silicone based defoamer, polyacrylic acid defoamer or fluorine silicon defoamer or its combination;
Described water reducer is one in Lignins water reducer MG, naphthalenesulfonate based water reducer FDN, resin system water reducer SM or polycarboxylate based water reducer or its combination.
Invention further provides and utilize aforementioned parian material dry powder to carry out the constructional method of the anti-skidding parian terrace of high light, comprise the following steps:
(1) basic unit is cleared up:
Greasy dirt, surface dust, cement laitance coating on removing concrete base layer, clean impurity;
(2) screed-coat mortar is laid:
According to ground designed elevation levelling, make horizontal elevation line, then make the cake that collapses, laying screed-coat mortar;
(3) depressed place dividing strip:
Screed-coat maintenance is after 1 ~ 2 day, depressed place dividing strip;
(4) parian slurry is laid:
After dividing strip depressed place is good, maintenance 1 ~ 2 day; Select parian material dry powder component according to component design, and carry out mixing according to water cement ratio 0.3 ~ 0.4 and stir, obtained parian slurry; Then lay, lay rear sheet-leveling machine to slurry densification compacting; Described water cement ratio refers to the ratio of the cement quality in water and parian material dry powder;
(5) powder stop-off is mended:
The laitance glowed evenly spreads one deck parian material dry powder; Then make real pressing, and with cylinder roll extrusion in length and breadth, to surperficial pulp, then spread grating natural colour sand, every 1 ~ 2h, then cylinder roll extrusion 1 ~ 2 time in length and breadth, after surperficial pulp, rub with the hands flat with wooden float, iron plate compacting;
Described parian material dry powder, grating natural colour sand are consistent with the formula described in step (4) or composition;
(6) grind:
Maintenance, after 14 ~ 28 days, starts mill corase grind and fine grinding operation:
First roughly grind 1 time, the order of mill first grinds dividing strip, centre of regrinding; After having roughly ground, water seasoning 2 ~ 3 days, then carry out fine grinding 1 time;
(7) infiltration stiffening agent is applied:
Washing ground also dries 1 ~ 2 day;
By two components of two component NH-s60 nano-silicon polymer penetration stiffening agent by first: the mass ratio of second=100:3, mixing and stirring, then adopts the mode homogenous application of spraying or roller coat in ground, and consumption has liquid surplus for keeping in the 1h of earth's surface;
(8) grinding and polishing:
After reaction 5 ~ 8h, wash the cured product that top layer, ground is residual with water, carry out grinding and polishing process; Polishing is complete and namely obtain the anti-skidding parian terrace of high light after cleaning ground.
3, method according to claim 2, is characterized in that, the grinding plant that the process of lapping of step (6) is used is floor grinding machine; The emery wheel used when roughly grinding is 50 ~ No. 80 coarse wheels; The emery wheel used when fine grinding is 120 ~ No. 180 polishing wheels.
4, method according to claim 2, is characterized in that, the grinding and polishing process described in step (8) comprises washing grinding and dry grinding polishing two steps, and equipment used is polishing machine, and abrasive disc is silicon carbide resin sheet;
Wherein, washing grinding operation is: first carry out longitudinal direction grinding one time, then transverse grinding one time with 300 object silicon carbide resin sheets; Then repeat aforesaid operations one time with 500 object silicon carbide resin sheets, then come again with 1000 orders; After 1000 order grindings terminate, wash and dry ground; Then dry grinding polishing is carried out 1 time with 500 order silicon carbide resin sheets, then with 1000 orders dry grinding polishings one time.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, material equipment involved in the present invention is easy to get, constructional method is simple to operation.The high light anti-skidding parian terrace cost manufactured is low, and energy environment consumes little.
2, the two component NH-s60 nano-silicon polymer penetration stiffening agents used can infiltrate and react with concrete, the hydrophobic anti-skid of reaction product is good, hardness is high, can polishing, the advantage such as gloss is high after polishing.This stiffening agent is bi-component organic silicon class infiltration stiffening agent, the hole of concrete surface can be infiltrated, the moisture content in hole is utilized to be hydrolyzed, and there is self polycondensation generation macromole by the Si-OH of hydrolysis, and the composition such as trifunctional link alkylsiloxane, four sense link alkyl silicon oxygen in stiffening agent, macromolecules cross-linking is made to become network-like, thus improve the degree of compactness of inside concrete, the Si-OH of hydrolysis can also carry out condensation with the-OH in concrete structure, thus enhances stiffening agent and concrete sticking power.Meanwhile, because the network-like structure of reaction post-hardening agent is not block concrete pore completely, but part is closely knit.Steam in concrete can also appear from inside, and avoids stiffening agent to occur phenomenons such as " flake, peel ".In addition, the organo siloxane composition of the band phenyl ring in first component adds the glossiness of stiffening agent, makes the terrace after polishing reach marmorean gloss.Hydrophobic branch chain on silane, improves the water repellency of terrace, thus improves terrace non-skid property.
Accompanying drawing explanation
Fig. 1 is working procedure schematic diagram of the present invention.
Fig. 2 is the high light anti-skidding parian terrace surface Rotating fields schematic diagram that the present invention constructs.
In figure, Reference numeral is: 1 screed-coat, 2 parian layers, 3 stiffening agents.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Parian material dry powder provided by the invention, comprises the component of following quality proportioning:
Silicate cement, 25 ~ 50%; Iron oxide pigment, 0 ~ 10%; Pigment extender, 0.5 ~ 5.65%; Grating natural colour sand, 38 ~ 69%; Defoamer, 0.05 ~ 0.3%; Water reducer, 0.05 ~ 0.45%;
Described silicate cement is one in ordinary Portland cement, early-strength type silicate cement, composite silica acid salt cement or white portland cement or its combination, strength grade be 42.5 and more than; The purity of described iron oxide pigment is 99%, and fineness is 400 ~ 1000 orders; Described pigment extender is one in calcium carbonate, titanium dioxide or zinc oxide or its combination, and fineness is 400 ~ 1000 orders; Described grating natural colour sand refers to requirement according to the bag of institute's parian and the mixture of the natural colour sand of the different-grain diameter that level is allotted, different colours; Described defoamer is one in metallic soap of stearic acid defoamer, silicone based defoamer, polyacrylic acid defoamer or fluorine silicon defoamer or its combination; Described water reducer is the one in Lignins water reducer MG, naphthalenesulfonate based water reducer FDN, resin system water reducer SM or polycarboxylate based water reducer.
Utilize this parian material dry powder to carry out the constructional method of the anti-skidding parian terrace of high light, comprise the following steps:
(1) basic unit is cleared up:
Greasy dirt, surface dust, cement laitance coating on removing concrete base layer, clean impurity;
(2) screed-coat mortar is laid:
According to ground designed elevation levelling, make horizontal elevation line, then make the cake that collapses, laying screed-coat mortar;
(3) depressed place dividing strip:
Screed-coat maintenance is after 1 ~ 2 day, depressed place dividing strip;
(4) parian slurry is laid:
After dividing strip depressed place is good, maintenance 1 ~ 2 day; Parian material dry powder component is selected, and according to water: gray scale (ratio of the cement quality in water and parian material dry powder) 0.3 ~ 0.4 is carried out mix and stirs, and obtains parian slurry according to component design; Then lay, lay rear sheet-leveling machine to slurry densification compacting;
(5) powder stop-off is mended:
The laitance glowed evenly spreads one deck parian material dry powder; Then make real pressing, and with cylinder roll extrusion in length and breadth, to surperficial pulp, then spread grating natural colour sand, every 1 ~ 2h, then cylinder roll extrusion 1 ~ 2 time in length and breadth, after surperficial pulp, rub with the hands flat with wooden float, iron plate compacting;
Described parian material dry powder, grating natural colour sand are consistent with the formula described in step (4) or composition;
(6) grind:
Maintenance, after 14 ~ 28 days, starts mill corase grind and fine grinding operation:
First roughly grind 1 time, the order of mill first grinds dividing strip, centre of regrinding; After having roughly ground, water seasoning 2 ~ 3 days, then carry out fine grinding 1 time; Process of lapping grinding plant used is floor grinding machine; The emery wheel used when roughly grinding is 50 ~ No. 80 coarse wheels; The emery wheel used when fine grinding is 120 ~ No. 180 polishing wheels.
(7) infiltration stiffening agent is applied:
Washing ground also dries 1 ~ 2 day;
By two components of two component NH-s60 nano-silicon polymer penetration stiffening agent by first: the mass ratio of second=100:3, mixing and stirring, then adopts the mode homogenous application of spraying or roller coat in ground, and consumption has liquid surplus for keeping in the 1h of earth's surface;
(8) grinding and polishing:
After reaction 5 ~ 8h, wash the cured product that top layer, ground is residual with water, carry out grinding and polishing process; Polishing is complete and namely obtain the anti-skidding parian terrace of high light after cleaning ground.Grinding and polishing process comprises washing grinding and dry grinding polishing two steps, and equipment used is polishing machine, and abrasive disc is silicon carbide resin sheet; Wherein, washing grinding operation is: first carry out longitudinal direction grinding one time, then transverse grinding one time with 300 object silicon carbide resin sheets; Then repeat aforesaid operations one time with 500 object silicon carbide resin sheets, then come again with 1000 orders; After 1000 order grindings terminate, wash and dry ground; Then dry grinding polishing is carried out 1 time with 500 order silicon carbide resin sheets, then with 1000 orders dry grinding polishings one time.
The two component NH-s60 nano-silicon polymer penetration stiffening agents used in the present invention by present invention applicant receive paddy novel material (Hangzhou) company limited produce.The lasting supply of this product of applicant's promissory warranty of the present invention, guarantees that the public can obtain this product to realize the present invention by suitable mode.
This stiffening agent comprises first, second two kinds of components, wherein:
(1) first component is by siloxane prepolymer, wear-resisting material modified, stablizer and solvent composition; The ratio that siloxane prepolymer accounts for total mass is 15 ~ 40%, and the wear-resisting material modified total mass ratio that accounts for is 1.7 ~ 34.95%, and it is 0.1 ~ 3% that stablizer accounts for total mass ratio, and all the other are solvent;
Described siloxane prepolymer refers to, to be hydrolyzed in a solvent prepolymerization or the silane prepolymer prepared by being hydrolyzed prepolymerization by least one in the siloxanes (A1) chained containing four senses or the siloxanes (A2) chained containing trifunctional and the siloxanes (A3) that chains of two senses by least one in the siloxanes (A1) chained containing four senses or the siloxanes (A2) chained containing trifunctional;
Containing four senses link siloxanes (A1), containing trifunctional link siloxanes (A2), containing two senses link siloxanes (A3) respectively by following various expression:
In formula, R1 ~ R4, R6 ~ R8, R10 and R12 are the alkyl or phenyl of 1 ~ 12 carbon; R5, R9, R11 are the alkyl or phenyl of H or 1 ~ 12 carbon;
Described wear-resisting material modified be nano silicon;
Described stablizer is the polyol of small-molecular-weight, is the one in following compound: trolamine, diethanolamine, glycerol, tetramethylolmethane, Macrogol 200 or poly(oxyethylene glycol) 400;
(2) component B is made up of catalysts and solvents, and catalyzer: the mass ratio of solvent is 1 ~ 10: 90 ~ 99;
Described catalyzer is organic tin, is the one in following compound: dibutyltin diacetate, dibutyl tin laurate, two sad dibutyl tins or two sad tin ethides;
Described in first, second two kinds of components, solvent is ethanol.
Described nano silicon provides with the form of nano silicon dioxide sol, and in colloidal sol, the particle diameter of silicon-dioxide is 20 ~ 100nm, pH is 3 ~ 7, and mass concentration is 10 ~ 50%.
Prepare the method for aforementioned stiffening agent, comprise the preparation process of first, second two kinds of components respectively:
(1) preparation method of first component comprises siloxanes pre-polymerization and wear-resisting modification two steps:
Siloxanes pre-polymerization:
By at least one in the siloxanes (A2) of the siloxanes (A1) containing four sense links, trifunctional link, or add in alcohol solvent by least one in the siloxanes (A2) of the siloxanes (A1) of four senses links, trifunctional link and the siloxanes (A3) that chains of two senses, be hydrolyzed under ion-exchange resin catalyzed prepolymerization; After prepolymerization completes, filtered and recycled ion exchange resin, steams part ethanol and unreacted water, and is deployed into ethanol the siloxane prepolymer solution that mass concentration is 50%; Wherein, siloxanes: water: ethanol: the mass ratio of ion exchange resin is 20 ~ 80: 10 ~ 40: 7 ~ 40: 1 ~ 3, being hydrolyzed prepolymerized temperature of reaction is 30 ~ 80 DEG C, and the reaction times is 2 ~ 8h;
Wear-resisting modification:
According to siloxane prepolymer solution: nano silicon dioxide sol: the mass ratio of stablizer is: 30 ~ 80: 17 ~ 69.9: 0.1 ~ 3, be add stablizer, nano silicon dioxide sol successively in the siloxane prepolymer solution of 50% to mass concentration, stir and obtain first component;
(2) preparation method of component B:
According to catalyzer: the mass ratio of ethanol is 1 ~ 10: 90 ~ 99, at room temperature stir catalyzer and ethanol to obtain component B.
Preferably, the ion exchange resin used in the step of described siloxanes pre-polymerization is cationic ion exchange resin.
As further preferred version, the ion exchange resin used in the step of described siloxanes pre-polymerization is strongly acidic styrene type cation exchange resin.
As further preferred version, the ion exchange resin used in the step of described siloxanes pre-polymerization is 732# Zeo-karb.
Test parameter in various embodiments of the present invention sees the following form:
The glossiness performance test of the anti-skidding parian terrace of high light prepared by the present invention adopts GB/T19766-2005 natural marble building board standard, and input angle is 60 °; Non-skid property judges with reference to DB11/T944-2012, and testing method adopts the testing method in GB/T4100-2006 ceramic tile annex M; Fastness to rubbing adopts the testing method of GB/T19766-2005 appendix A.
The test result of embodiment is as follows:
Above-described embodiment, only for technical conceive of the present invention and feature are described, its objective is to allow and is familiar with these those skilled in the art and can understands content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalents done by spirit of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (3)
1. utilize parian material dry powder to carry out the constructional method of the anti-skidding parian terrace of high light, it is characterized in that, comprise the following steps:
(1) basic unit is cleared up:
Greasy dirt, surface dust, cement laitance coating on removing concrete base layer, clean impurity;
(2) screed-coat mortar is laid:
According to ground designed elevation levelling, make horizontal elevation line, then make the cake that collapses, laying screed-coat mortar;
(3) depressed place dividing strip:
Screed-coat maintenance is after 1 ~ 2 day, depressed place dividing strip;
(4) parian slurry is laid:
After dividing strip depressed place is good, maintenance 1 ~ 2 day; Select parian material dry powder component according to component design, and carry out mixing according to water cement ratio 0.3 ~ 0.4 and stir, obtained parian slurry; Then lay, lay rear sheet-leveling machine to slurry densification compacting; Described water cement ratio refers to the ratio of the cement quality in water and parian material dry powder;
(5) powder stop-off is mended:
The laitance glowed evenly spreads one deck parian material dry powder; Then make real pressing, and with cylinder roll extrusion in length and breadth, to surperficial pulp, then spread grating natural colour sand, every 1 ~ 2h, then cylinder roll extrusion 1 ~ 2 time in length and breadth, after surperficial pulp, rub with the hands flat with wooden float, iron plate compacting;
Described parian material dry powder is consistent with the formula of parian material dry powder in step (4); Described grating natural colour sand is consistent with grating natural colour sand composition in step (4);
(6) grind:
Maintenance, after 14 ~ 28 days, starts mill corase grind and fine grinding operation:
First roughly grind 1 time, the order of mill first grinds dividing strip, centre of regrinding; After having roughly ground, water seasoning 2 ~ 3 days, then carry out fine grinding 1 time;
(7) infiltration stiffening agent is applied:
Washing ground also dries 1 ~ 2 day;
By two components of two component NH-s60 nano-silicon polymer penetration stiffening agent by first: the mass ratio of second=100:3, mixing and stirring, then adopts the mode homogenous application of spraying or roller coat in ground, and consumption has liquid surplus for keeping in the 1h of earth's surface;
(8) grinding and polishing:
After reaction 5 ~ 8h, wash the cured product that top layer, ground is residual with water, carry out grinding and polishing process; Polishing is complete and namely obtain the anti-skidding parian terrace of high light after cleaning ground;
In the step (4) of the method, described parian material dry powder comprises the component of following quality proportioning:
Silicate cement, 25 ~ 50%;
Iron oxide pigment, 0 ~ 10%;
Pigment extender, 0.5 ~ 5.65%;
Grating natural colour sand, 38 ~ 69%;
Defoamer, 0.05 ~ 0.3%;
Water reducer, 0.05 ~ 0.45%;
Described silicate cement is one in ordinary Portland cement, early-strength type silicate cement, composite silica acid salt cement or white portland cement or its combination, strength grade be 42.5 and more than;
The purity of described iron oxide pigment is 99%, and fineness is 400 ~ 1000 orders;
Described pigment extender is one in calcium carbonate, titanium dioxide or zinc oxide or its combination, and fineness is 400 ~ 1000 orders;
Described grating natural colour sand refers to requirement according to the bag of institute's parian and the mixture of the natural colour sand of the different-grain diameter that level is allotted, different colours;
Described defoamer is one in metallic soap of stearic acid defoamer, silicone based defoamer, polyacrylic acid defoamer or fluorine silicon defoamer or its combination;
Described water reducer is the one in Lignins water reducer MG, naphthalenesulfonate based water reducer FDN, resin system water reducer SM or polycarboxylate based water reducer;
In the step (7) of the method, described pair of component NH-s60 nano-silicon polymer penetration stiffening agent comprises first, second two kinds of components, wherein:
A () first component is by siloxane prepolymer, wear-resisting material modified, stablizer and solvent composition; The ratio that siloxane prepolymer accounts for total mass is 15 ~ 40%, and the wear-resisting material modified total mass ratio that accounts for is 1.7 ~ 34.95%, and it is 0.1 ~ 3% that stablizer accounts for total mass ratio, and all the other are solvent;
Described siloxane prepolymer refers to, to be hydrolyzed in a solvent prepolymerization or the silane prepolymer prepared by being hydrolyzed prepolymerization by least one in the siloxanes (A1) chained containing four senses or the siloxanes (A2) chained containing trifunctional and the siloxanes (A3) that chains of two senses by least one in the siloxanes (A1) chained containing four senses or the siloxanes (A2) chained containing trifunctional;
Containing four senses link siloxanes (A1), containing trifunctional link siloxanes (A2), containing two senses link siloxanes (A3) respectively by following various expression:
In formula, R1 ~ R4, R6 ~ R8, R10 and R12 are the alkyl or phenyl of 1 ~ 12 carbon; R5, R9, R11 are the alkyl or phenyl of H or 1 ~ 12 carbon;
Described wear-resisting material modified be nano silicon;
Described stablizer is the polyol of small-molecular-weight, is the one in following compound: trolamine, diethanolamine, glycerol, tetramethylolmethane, Macrogol 200 or poly(oxyethylene glycol) 400;
B () component B is made up of catalysts and solvents, and catalyzer: the mass ratio of solvent is 1 ~ 10: 90 ~ 99;
Described catalyzer is organic tin, is the one in following compound: dibutyltin diacetate, dibutyl tin laurate, two sad dibutyl tins or two sad tin ethides;
Described in first, second two kinds of components, solvent is ethanol;
Described nano silicon provides with the form of nano silicon dioxide sol, and in colloidal sol, the particle diameter of silicon-dioxide is 20 ~ 100nm, pH is 3 ~ 7, and mass concentration is 10 ~ 50%.
2. method according to claim 1, is characterized in that, the grinding plant that the process of lapping of step (6) is used is floor grinding machine; The emery wheel used when roughly grinding is 50 ~ No. 80 coarse wheels; The emery wheel used when fine grinding is 120 ~ No. 180 polishing wheels.
3. method according to claim 1, is characterized in that, the grinding and polishing process described in step (8) comprises washing grinding and dry grinding polishing two steps, and equipment used is polishing machine, and abrasive disc is silicon carbide resin sheet;
Wherein, washing grinding operation is: first carry out longitudinal direction grinding one time, then transverse grinding one time with 300 object silicon carbide resin sheets; Then repeat aforesaid operations one time with 500 object silicon carbide resin sheets, then come again with 1000 orders; After 1000 order grindings terminate, wash and dry ground; Then dry grinding polishing is carried out 1 time with 500 order silicon carbide resin sheets, then with 1000 orders dry grinding polishings one time.
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