The present invention relates to the manufacture technology field of bamboo furniture, especially a kind of manufacture craft of former bamboo furniture.
By contrast, former bamboo furniture more can embody the characteristic of bamboo, and more environmental protection, more low-carbon (LC) have good industrial art and naturality, and its fastness even can match in excellence or beauty with solid wood.But the process of former bamboo is comparatively complicated, once process bad, the quality dissatisfaction of former bamboo furniture just may be caused.So far, there is no a kind of maturation process that can make former bamboo furniture.
Traditional heavy bamboo furniture multiselect is with the bamboo in 2 ~ 3 years ages of bamboo.During making, first adopt mechanical means, make bamboo become rectangle bamboo cane or be twisted into silk, be then bonded into plate through carbonization, drug-treated, high pressure, finally make heavy bamboo furniture again.This traditional heavy bamboo furniture adopt in the process made is dried more in baking room, and bake out temperature controls at 50 ~ 65 DEG C; Adopt mechanical grinding, polish three times; To spray paint aspect, based on true qualities, one priming paint, one finish paint; Plug-in type connection method is adopted to fix bamboo.The heavy bamboo furniture adopting above-mentioned technique to make cannot embody the characteristic of bamboo itself, and appearance unsightly.
Traditional little bamboo of DELICATE AND SIMPLE BAMBOO multiselect, as fishscale bamboo, the dawn bitter bamboo such as bamboo, the bamboo adopting 1 ~ 2 year age of bamboo more.Before making, soak more than 1 year in the pool first bamboo being placed on soda lime water, then bamboo is whittled into the making that the thin bamboo strip carries out furniture.There is following defect in this traditional DELICATE AND SIMPLE BAMBOO: (1) adopts natural air drying more in the process made, and internal moisture controls between 16% ~ 24%, and the air-dry time is longer, and moisture is difficult to control; (2) adopt 240 object sand paper to carry out general polishing, polishing quality is comparatively coarse; (3) to spray paint aspect, based on true qualities, one priming paint, one finish paint, is not particular about humidity, causes the oil gas color and luster of furniture surface poor; (4) adopt and enclose line method structure and fix, namely adopt groove to surround between bamboo and bamboo and nail on bamboo nail and fixed.The DELICATE AND SIMPLE BAMBOO structure adopting above-mentioned technique to make loosely, is not durable, and unsightly, has no appreciative value.
In recent years, timber resources growing tension, country, in order to alleviate timber resources this situation nervous, starts to vigorously advocate adopting bamboo wood to replace timber to make furniture.Traditional bamboo furniture can be divided into DELICATE AND SIMPLE BAMBOO, heavy bamboo furniture and former bamboo furniture.
Former bamboo utilization rate of the present invention is higher, more environmental protection, more low-carbon (LC) compared with the former bamboo furniture produced and DELICATE AND SIMPLE BAMBOO, heavy bamboo furniture, more durable, classic breath is denseer, the non-general furniture of its industrial art, naturality is comparable, its fastness can match in excellence or beauty with solid wood furniture especially, has also made remarkable contribution for saving timber resources simultaneously.
(11) be coated with last layer finish paint to former bamboo furniture, make itself and isolate from outer air, can effectively avoid former bamboo furniture by weathering, corrosion.
(10) old process is done to former bamboo furniture, for furniture itself increases a classic color.
(9) the former bamboo furniture of semi-finished product is repeatedly polished, to remove granule foreign and the stain on the former bamboo furniture surface of semi-finished product.
(8) coat mounting medium on the surface of the former bamboo furniture of semi-finished product, effectively the moisture of bamboo can not only be locked in the inside, and the paint that sprays up can be made dry faster.
(7) adopt built-in fixing insertion to be connected between bamboo with bamboo, not only make bamboo connect more firm, but also improve the surface quality of bamboo junction, appearance seems more attractive in appearance.
(6) bamboo after drying is carried out low temperature drying, the color and luster of bamboo can be made consistent, reduce aberration, strengthen absorption affinity.
(5) after polishing, Water warfare is carried out to bamboo, namely rinse polished bamboo with water, make free surface moisture in every root bamboo as far as possible consistent, after washing away carbonization, boiling polishing, be attached to the heteroproteose cell on bamboo, prepare for drying, and then improve the surface quality of former bamboo furniture.
(4) polishing is carried out to bamboo, the epidermis of bamboo of shooting off, retaining the surf green of innermost layer, carrying out early-stage preparations for spraying paint.
(3) bamboo is carried out cut-off process, bamboo is remained unchanged shape, the furniture made can be made exquisiter.
(2) adopt carbide furnace to carry out boiling and carbonization to former bamboo, the gross pressure of carbide furnace controls at 0.25 ~ 0.3Mpa, and temperature controls at 120 ~ 130 DEG C, and temperature retention time controlled at 40 ~ 60 minutes.Like this can debug, keep moisture in bamboo consistent, effectively stop the hidden danger that bamboo goes mouldy.
(1) select the golden bamboo in 3 ~ 4 years ages of bamboo, class bamboo, Lei Zhu, Chinese holly bamboo or bamboo, and measure more than root 1000mm, bamboo that diameter is 20mm ~ 45mm as former bamboo, require that ring is close, bamboo is straight, bamboo is round, wall thickness.These bamboos are flexible, intensity is large, and the furniture produced can be made more firm, more durable.
Manufacture craft of the present invention has following benefit:
Step described in the present invention (5) selects granularity to be that 80 order ~ 120 object sized flap wheels carry out polishing, requires that polishing machine rotating speed is 2880 revs/min.
Step described in the present invention (3) is when springtime and winter carries out two seasons, and the gross pressure of carbide furnace controls at 0.3Mpa, and temperature controls at 130 DEG C, and temperature retention time controlled at 60 minutes.
Step described in the present invention (3) in summer and autumn, two seasons carried out time, the gross pressure of carbide furnace controls at 0.25Mpa, and temperature controls at 120 DEG C, and temperature retention time controlled at 40 minutes.
The head of bamboo and afterbody saw are put down by step described in the present invention (2), leave and take the bamboo of middle 3000mm as former bamboo; And with electric hand drill clamp long 1800mm, the band point reinforcing bar of diameter 12mm carries out perforation to bamboo and gets through ring.
(22) be coated with finish paint, utilize spray gun to the semi-finished product spray paint processed through step (21), spraying rate is 12 ~ 18 ms/min, finally obtains finished product;
(21) polish, with sand paper by repairing the particle of the surface of semi-finished after look, stain polishing is clean, sand paper selects granularity to be 400 order ~ 600 object sand paper;
(20) repair look, check that whether colouring is even, to carry out the repairing of color to the semi-finished product processed through step (19);
(19) paint, toner is sprayed on the semi-finished product that process through step (18), obtain the color that former bamboo furniture needs;
(18) do old, coated by the semi-finished product furniture surface processed through step (17) and do old dose by rosin, ink and emulsification, wherein, the ratio doing the rosin in old dose, ink and kerosene is: 0.3:0.1:1;
(17) polish, totally, sand paper selects granularity to be 320 order ~ 400 object sand paper for the particle produced priming for the second time with sand paper, stain polishing;
(16) second time is primed, and utilize spray gun to the semi-finished product spray-applied primer processed through step (15), spraying rate is 15 ~ 20 ms/min;
(15) polish, totally, sand paper selects granularity to be 320 order ~ 400 object sand paper for the particle produced priming for the first time with sand paper, stain polishing;
(14) first time primes, and utilize spray gun to the semi-finished product spray-applied primer processed through step (13), spraying rate is 15 ~ 20 ms/min;
(13) polish, particle, the stain polishing of the surface of semi-finished that will process through step (12) with sand paper are clean, and sand paper selects granularity to be 240 object sand paper;
(12) be coated with mounting medium, the semi-finished product processed through step (11) are delivered to dustless paint spraying booth, with heating lamp, indoor temperature is adjusted to 25 DEG C, utilize spray gun to spray mounting medium to semi-finished product, spraying rate is 22 ~ 25 ms/min;
(11) half-finished deashing, produces compressed gas by air compressor machine and is blown clean by the dust of semi-finished product furniture surface;
(10) semi-finished product detect, and comprise the detection of moisture and half-finished quality testing, require that half-finished moisture is between 16% ~ 18%; Wherein, half-finished quality testing comprises detection half-finished polishing quality, bearing capacity, scrapes grey quality;
(9) processing and forming, polishing, assembling, first carries out cutting, polishing, engraving is shaping by the bamboo that step (8) processes, then is interconnected by every root bamboo and assembles, and makes semi-finished product furniture; Connection wherein between bamboo and bamboo adopts built-in fixing insertion to connect, namely first between the endoporus of two bamboos, a waddy is inserted, the bonding agent filler of glue and bamboo end mixing composition is squeezed between the endoporus of two bamboos, the inwall of waddy and bamboo is bonded together securely, again the end of two bamboos is docked, blend compounds water, by firmly bonding for the end of two bamboos, in the process made, also needs to scrape ash process to the surface of semi-finished product furniture;
(8) low temperature drying, the bamboo processed through step (7) being sent into baking room oven dry is 12% ~ 15% to moisture, and bake out temperature controls at 35 DEG C ~ 42 DEG C, and drying time controls at 6 ~ 8 hours; After oven dry, with plastic sheeting, bamboo is covered;
(5) polishing, is fixed on the bamboo processed through step (4) on polishing machine and carries out polishing operation;
(4) cut-off, first carries out straightening by the roasting heat of temperature fire by the bamboo processed through step (3), more solid with water logging;
(3) carbonization, boiling, put into carbide furnace by the bamboo processed through step (2) and carry out boiling and carbonization; The gross pressure of carbide furnace controls at 0.25 ~ 0.3Mpa, and temperature controls at 120 ~ 130 DEG C, and temperature retention time controls at 40 ~ 60 minutes;
(2) get through ring, first the head of bamboo and afterbody saw are put down, and then the ring of bamboo is got through;
(1) select bamboo, select the golden bamboo in 3 ~ 4 years ages of bamboo, mottled bamboo, Lei Zhu, Chinese holly bamboo or bamboo, and measure more than root 1000mm, bamboo that diameter is 20mm ~ 45mm is as former bamboo;
Concrete scheme of the present invention is: a kind of manufacture craft of former bamboo furniture, comprises the following steps:
Object of the present invention is improved for above-mentioned the deficiencies in the prior art exactly, provides a kind of manufacture craft of former bamboo furniture.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1
Concrete manufacture craft of the present invention comprises the following steps:
(1) select bamboo, select the golden bamboo in 3 years ages of bamboo, mottled bamboo, Lei Zhu, Chinese holly bamboo or bamboo, and measure more than root 1000mm, bamboo that diameter is 20mm is as former bamboo.
(2) get through ring, first the head of bamboo and afterbody saw are put down, and then the ring of bamboo is got through.
(3) carbonization, boiling, put into carbide furnace by the bamboo processed through step (2) and carry out boiling and carbonization; The gross pressure of carbide furnace controls at 0.25 ~ 0.3Mpa, and temperature controls at 120 ~ 130 DEG C, and temperature retention time controlled at 40 ~ 60 minutes.
(4) cut-off, first carries out straightening by the roasting heat of temperature fire by the bamboo processed through step (3), more solid with water logging.
(5) polishing, is fixed on the bamboo processed through step (4) on polishing machine and carries out polishing operation.
(6) Water warfare, rinses the bamboo after step (5) polishing with water.
(7) dry, dry the bamboo processed through step (6) with clean cotton.
(8) low temperature drying, the bamboo processed through step (7) being sent into baking room oven dry is 12% to moisture, and bake out temperature controls at 35 DEG C, and drying time controls at 6 hours; After oven dry, with plastic sheeting, bamboo is covered.
(9) processing and forming, polishing, assembling, first carries out cutting, polishing, engraving is shaping by the bamboo that step (8) processes, then is interconnected by every root bamboo and assembles, and makes semi-finished product furniture; Connection wherein between bamboo and bamboo adopts built-in fixing insertion to connect, namely first between the endoporus of two bamboos, a waddy is inserted, the bonding agent filler of glue and bamboo end mixing composition is squeezed between the endoporus of two bamboos, the inwall of waddy and bamboo is bonded together securely, again the end of two bamboos is docked, blend compounds water, by firmly bonding for the end of two bamboos, in the process made, also needs to scrape ash process to the surface of semi-finished product furniture.
(10) semi-finished product detect, and comprise the detection of moisture and half-finished quality testing, require that half-finished moisture controls 16%; Wherein, half-finished quality testing comprises detection half-finished polishing quality, bearing capacity, scrapes grey quality.
(11) half-finished deashing, produces compressed gas by air compressor machine and is blown clean by the dust of semi-finished product furniture surface.
(12) be coated with mounting medium, the semi-finished product processed through step (11) are delivered to dustless paint spraying booth, with heating lamp, indoor temperature is adjusted to 25 DEG C, utilize spray gun to spray mounting medium to semi-finished product, spraying rate is 22 ms/min.
(13) polish, particle, the stain polishing of the surface of semi-finished that will process through step (12) with sand paper are clean, and sand paper selects granularity to be 240 object sand paper.
(14) first time primes, and utilize spray gun to the semi-finished product spray-applied primer processed through step (13), spraying rate is 15 ms/min.
(15) polish, totally, sand paper selects granularity to be 320 object sand paper for the particle produced priming for the first time with sand paper, stain polishing.
(16) second time is primed, and utilize spray gun to the semi-finished product spray-applied primer processed through step (15), spraying rate is 15 ms/min.
(17) polish, totally, sand paper selects granularity to be 320 object sand paper for the particle produced priming for the second time with sand paper, stain polishing.
(18) do old, coated by the semi-finished product furniture surface processed through step (17) and do old dose by rosin, ink and emulsification, wherein, the ratio doing the rosin in old dose, ink and kerosene is: 0.3:0.1:1.
(19) paint, toner is sprayed on the semi-finished product that process through step (18), obtain the color that former bamboo furniture needs.
(20) repair look, check that whether colouring is even, to carry out the repairing of color to the semi-finished product processed through step (19).
(21) polish, with sand paper by repairing the particle of the surface of semi-finished after look, stain polishing is clean, sand paper selects granularity to be 400 object sand paper.
(22) be coated with finish paint, utilize spray gun to the semi-finished product spray paint processed through step (21), spraying rate is 12 ms/min, finally obtains finished product.
(23) product inspection.
(24) packaging and warehousing.
The head of bamboo and afterbody saw are put down by step described in the present embodiment (2), leave and take the bamboo of middle 3000mm as former bamboo; And with electric hand drill clamp long 1800mm, the band point reinforcing bar of diameter 12mm carries out perforation to bamboo and gets through ring.
Step described in the present embodiment (3) in summer and autumn, two seasons carried out time, the gross pressure of carbide furnace controls at 0.25Mpa, and temperature controls at 120 DEG C, and temperature retention time controlled at 40 minutes.
Step described in the present embodiment (3) is when springtime and winter carries out two seasons, and the gross pressure of carbide furnace controls at 0.3Mpa, and temperature controls at 130 DEG C, and temperature retention time controlled at 60 minutes.
Step described in the present embodiment (5) selects granularity to be that 80 object sized flap wheels carry out polishing, requires that polishing machine rotating speed is 2880 revs/min.
Embodiment 2
Concrete manufacture craft of the present invention comprises the following steps:
(1) select bamboo, select the golden bamboo in 4 years ages of bamboo, mottled bamboo, Lei Zhu, Chinese holly bamboo or bamboo, and measure more than root 1000mm, bamboo that diameter is 32mm is as former bamboo.
(2) get through ring, first the head of bamboo and afterbody saw are put down, and then the ring of bamboo is got through.
(3) carbonization, boiling, put into carbide furnace by the bamboo processed through step (2) and carry out boiling and carbonization; The gross pressure of carbide furnace controls at 0.25 ~ 0.3Mpa, and temperature controls at 120 ~ 130 DEG C, and temperature retention time controlled at 40 ~ 60 minutes.
(4) cut-off, first carries out straightening by the roasting heat of temperature fire by the bamboo processed through step (3), more solid with water logging.
(5) polishing, is fixed on the bamboo processed through step (4) on polishing machine and carries out polishing operation.
(6) Water warfare, rinses the bamboo after step (5) polishing with water.
(7) dry, dry the bamboo processed through step (6) with clean cotton.
(8) low temperature drying, the bamboo processed through step (7) being sent into baking room oven dry is 13.5% to moisture, and bake out temperature controls at 38 DEG C, and drying time controls at 7 hours; After oven dry, with plastic sheeting, bamboo is covered.
(9) processing and forming, polishing, assembling, first carries out cutting, polishing, engraving is shaping by the bamboo that step (8) processes, then is interconnected by every root bamboo and assembles, and makes semi-finished product furniture; Connection wherein between bamboo and bamboo adopts built-in fixing insertion to connect, namely first between the endoporus of two bamboos, a waddy is inserted, the bonding agent filler of glue and bamboo end mixing composition is squeezed between the endoporus of two bamboos, the inwall of waddy and bamboo is bonded together securely, again the end of two bamboos is docked, blend compounds water, by firmly bonding for the end of two bamboos, in the process made, also needs to scrape ash process to the surface of semi-finished product furniture.
(10) semi-finished product detect, and comprise the detection of moisture and half-finished quality testing, require that half-finished moisture controls 17%; Wherein, half-finished quality testing comprises detection half-finished polishing quality, bearing capacity, scrapes grey quality.
(11) half-finished deashing, produces compressed gas by air compressor machine and is blown clean by the dust of semi-finished product furniture surface.
(12) be coated with mounting medium, the semi-finished product processed through step (11) are delivered to dustless paint spraying booth, with heating lamp, indoor temperature is adjusted to 25 DEG C, utilize spray gun to spray mounting medium to semi-finished product, spraying rate is 23.5 ms/min.
(13) polish, particle, the stain polishing of the surface of semi-finished that will process through step (12) with sand paper are clean, and sand paper selects granularity to be 240 object sand paper.
(14) first time primes, and utilize spray gun to the semi-finished product spray-applied primer processed through step (13), spraying rate is 17.5 ms/min.
(15) polish, totally, sand paper selects granularity to be 360 object sand paper for the particle produced priming for the first time with sand paper, stain polishing.
(16) second time is primed, and utilize spray gun to the semi-finished product spray-applied primer processed through step (15), spraying rate is 17.5 ms/min.
(17) polish, totally, sand paper selects granularity to be 360 object sand paper for the particle produced priming for the second time with sand paper, stain polishing.
(18) do old, coated by the semi-finished product furniture surface processed through step (17) and do old dose by rosin, ink and emulsification, wherein, the ratio doing the rosin in old dose, ink and kerosene is: 0.3:0.1:1.
(19) paint, toner is sprayed on the semi-finished product that process through step (18), obtain the color that former bamboo furniture needs.
(20) repair look, check that whether colouring is even, to carry out the repairing of color to the semi-finished product processed through step (19).
(21) polish, with sand paper by repairing the particle of the surface of semi-finished after look, stain polishing is clean, sand paper selects granularity to be 500 object sand paper.
(22) be coated with finish paint, utilize spray gun to the semi-finished product spray paint processed through step (21), spraying rate is 15 ms/min, finally obtains finished product.
(23) product inspection.
(24) packaging and warehousing.
The head of bamboo and afterbody saw are put down by step described in the present embodiment (2), leave and take the bamboo of middle 3000mm as former bamboo; And with electric hand drill clamp long 1800mm, the band point reinforcing bar of diameter 12mm carries out perforation to bamboo and gets through ring.
Step described in the present embodiment (3) in summer and autumn, two seasons carried out time, the gross pressure of carbide furnace controls at 0.25Mpa, and temperature controls at 120 DEG C, and temperature retention time controlled at 40 minutes.
Step described in the present embodiment (3) is when springtime and winter carries out two seasons, and the gross pressure of carbide furnace controls at 0.3Mpa, and temperature controls at 130 DEG C, and temperature retention time controlled at 60 minutes.
Step described in the present embodiment (5) selects granularity to be that 100 object sized flap wheels carry out polishing, requires that polishing machine rotating speed is 2880 revs/min.
Embodiment 3
Concrete manufacture craft of the present invention comprises the following steps:
(1) select bamboo, select the golden bamboo in 4 years ages of bamboo, mottled bamboo, Lei Zhu, Chinese holly bamboo or bamboo, and measure more than root 1000mm, bamboo that diameter is 45mm is as former bamboo.
(2) get through ring, first the head of bamboo and afterbody saw are put down, and then the ring of bamboo is got through.
(3) carbonization, boiling, put into carbide furnace by the bamboo processed through step (2) and carry out boiling and carbonization; The gross pressure of carbide furnace controls at 0.25 ~ 0.3Mpa, and temperature controls at 120 ~ 130 DEG C, and temperature retention time controlled at 40 ~ 60 minutes.
(4) cut-off, first carries out straightening by the roasting heat of temperature fire by the bamboo processed through step (3), more solid with water logging.
(5) polishing, is fixed on the bamboo processed through step (4) on polishing machine and carries out polishing operation.
(6) Water warfare, rinses the bamboo after step (5) polishing with water.
(7) dry, dry the bamboo processed through step (6) with clean cotton.
(8) low temperature drying, the bamboo processed through step (7) being sent into baking room oven dry is 15% to moisture, and bake out temperature controls at 42 DEG C, and drying time controls at 8 hours; After oven dry, with plastic sheeting, bamboo is covered.
(9) processing and forming, polishing, assembling, first carries out cutting, polishing, engraving is shaping by the bamboo that step (8) processes, then is interconnected by every root bamboo and assembles, and makes semi-finished product furniture; Connection wherein between bamboo and bamboo adopts built-in fixing insertion to connect, namely first between the endoporus of two bamboos, a waddy is inserted, the bonding agent filler of glue and bamboo end mixing composition is squeezed between the endoporus of two bamboos, the inwall of waddy and bamboo is bonded together securely, again the end of two bamboos is docked, blend compounds water, by firmly bonding for the end of two bamboos, in the process made, also needs to scrape ash process to the surface of semi-finished product furniture.
(10) semi-finished product detect, and comprise the detection of moisture and half-finished quality testing, require that half-finished moisture controls 18%; Wherein, half-finished quality testing comprises detection half-finished polishing quality, bearing capacity, scrapes grey quality.
(11) half-finished deashing, produces compressed gas by air compressor machine and is blown clean by the dust of semi-finished product furniture surface.
(12) be coated with mounting medium, the semi-finished product processed through step (11) are delivered to dustless paint spraying booth, with heating lamp, indoor temperature is adjusted to 25 DEG C, utilize spray gun to spray mounting medium to semi-finished product, spraying rate is 25 ms/min.
(13) polish, particle, the stain polishing of the surface of semi-finished that will process through step (12) with sand paper are clean, and sand paper selects granularity to be 240 object sand paper.
(14) first time primes, and utilize spray gun to the semi-finished product spray-applied primer processed through step (13), spraying rate is 20 ms/min.
(15) polish, totally, sand paper selects granularity to be 400 object sand paper for the particle produced priming for the first time with sand paper, stain polishing.
(16) second time is primed, and utilize spray gun to the semi-finished product spray-applied primer processed through step (15), spraying rate is 20 ms/min.
(17) polish, totally, sand paper selects granularity to be 400 object sand paper for the particle produced priming for the second time with sand paper, stain polishing.
(18) do old, coated by the semi-finished product furniture surface processed through step (17) and do old dose by rosin, ink and emulsification, wherein, the ratio doing the rosin in old dose, ink and kerosene is: 0.3:0.1:1.
(19) paint, toner is sprayed on the semi-finished product that process through step (18), obtain the color that former bamboo furniture needs.
(20) repair look, check that whether colouring is even, to carry out the repairing of color to the semi-finished product processed through step (19).
(21) polish, with sand paper by repairing the particle of the surface of semi-finished after look, stain polishing is clean, sand paper selects granularity to be 600 object sand paper.
(22) be coated with finish paint, utilize spray gun to the semi-finished product spray paint processed through step (21), spraying rate is 18 ms/min, finally obtains finished product.
(23) product inspection.
(24) packaging and warehousing.
The head of bamboo and afterbody saw are put down by step described in the present embodiment (2), leave and take the bamboo of middle 3000mm as former bamboo; And with electric hand drill clamp long 1800mm, the band point reinforcing bar of diameter 12mm carries out perforation to bamboo and gets through ring.
Step described in the present embodiment (3) in summer and autumn, two seasons carried out time, the gross pressure of carbide furnace controls at 0.25Mpa, and temperature controls at 120 DEG C, and temperature retention time controlled at 40 minutes.
Step described in the present embodiment (3) is when springtime and winter carries out two seasons, and the gross pressure of carbide furnace controls at 0.3Mpa, and temperature controls at 130 DEG C, and temperature retention time controlled at 60 minutes.
Step described in the present embodiment (5) selects granularity to be that 120 object sized flap wheels carry out polishing, requires that polishing machine rotating speed is 2880 revs/min.
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