CN110606752B - Process for preparing colour ceramic with clear boundary - Google Patents
Process for preparing colour ceramic with clear boundary Download PDFInfo
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- CN110606752B CN110606752B CN201910961617.2A CN201910961617A CN110606752B CN 110606752 B CN110606752 B CN 110606752B CN 201910961617 A CN201910961617 A CN 201910961617A CN 110606752 B CN110606752 B CN 110606752B
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
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- C04B2235/9661—Colour
Abstract
The invention relates to the technical field of ceramic manufacturing processes, in particular to a color ceramic manufacturing process with clear boundary lines. The method comprises the following steps of A: respectively preparing a plurality of single-color raw blanks with independent colors by using ceramic powder with different colors; and B: combining and arranging a plurality of single-color raw blanks with different colors according to requirements to obtain a color blank; and C: carrying out isostatic pressing treatment on the color blank; step D: performing glue discharging treatment on the color blank subjected to isostatic pressing treatment; step E: and sintering the color blank subjected to the binder removal treatment to obtain the color ceramic. The ceramic product with clear color boundary, colorful and rich colors and good corrosion resistance and friction resistance is prepared, and the appearance of the ceramic product is enriched well. Meanwhile, the material advantages of the ceramic are matched, and the ceramic is not inferior to the existing common glass replacement scheme.
Description
Technical Field
The invention relates to the technical field of ceramic manufacturing processes, in particular to a color ceramic manufacturing process with clear boundary lines.
Background
The ceramic material has the characteristics of high hardness and stable chemical property and is widely applied to the fields of industry, commerce and daily use. On the other hand, the ceramic material has the characteristics of high brittleness and high possibility of being broken, and the wider application of the ceramic material is influenced by single color tone. Zirconium dioxide ceramics have attracted much attention because they have a phase change toughening mechanism, which makes them have the properties of certain metallic materials.
Currently, zirconia ceramics have the characteristics of high strength, high hardness, wear resistance, corrosion resistance, self lubrication, high temperature resistance, high temperature conductivity, close thermal expansion coefficient to metal, large phase change volume effect of zirconia and the like, and are widely applied to various fields such as cutters, molds, valves, advanced refractory materials, oxygen sensors, solid fuel cells, high temperature electrodes, high temperature thermal sensitive ceramics, inorganic pigments, high temperature ceramic glaze and the like. In addition to the above characteristics, zirconia ceramics are also a popular material for exterior housings because of their high and expensive texture and their lusterless color, such as jade.
The zirconia ceramic shell on the market is mostly in single colors such as black, white, pink and the like. With the increasing abundance of corresponding products on the market and the aesthetic fatigue of users, a single color ceramic housing will have difficulty gaining absolute advantage in competition with alternative materials (e.g., glass).
At present, the appearance diversity of the ceramic shell is relatively single, and only a small amount of products are subjected to glazing treatment except for a single color (pure color). Glazing greatly reduces the grade of the zirconia ceramic back plate, which greatly restricts the market acceptance of the scheme.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a manufacturing process for preparing a plurality of single-color green blanks with different colors by a dry pressing process, combining the single-color green blanks with different colors to obtain a color blank, and then performing subsequent specific isostatic pressing, glue discharging and sintering treatments, and then performing a series of conventional treatments to obtain a ceramic product with various colors and clear boundary lines.
In order to solve the technical problems, the invention adopts the following technical scheme: a process for manufacturing a well-defined colored ceramic includes the following steps,
step A: respectively preparing a plurality of single-color raw blanks with independent colors by using ceramic powder with different colors;
and B: combining and arranging a plurality of single-color raw blanks with different colors according to requirements to obtain a color blank;
and C: carrying out isostatic pressing treatment on the color blank;
step D: performing glue discharging treatment on the color blank subjected to isostatic pressing treatment;
step E: and sintering the color blank subjected to the binder removal treatment to obtain the color ceramic.
Preferably, the ceramic powders with different colors in the step A are respectively made into a plurality of single-color green blanks with single color by dry pressing.
Preferably, the thickness of the single-color green blank in the step A is 0.1 to 10 mm.
Preferably, the thickness of the single-color green blank in the step A is 0.2 to 2 mm.
Preferably, the thickness of the single-color green blank in the step A is 0.6 to 1.2 mm.
Preferably, in the step B, a plurality of single-color raw blanks with different colors are arranged and stacked according to design requirements, so as to obtain a color blank.
Preferably, in the step B, the plurality of monochromatic green blanks with different colors are laminated layer by pressing according to a certain rule, so as to obtain a colored blank.
Preferably, a layer of adhesive separating film is attached to the topmost surface and the bottommost surface of the color blank in the step B.
Preferably, in the step C, the color blank is first put into a packaging bag for packaging and then subjected to isostatic pressing.
Preferably, the isostatic pressing parameters in step C are: 100 to 200Mpa/10 to 30 min.
Preferably, the isostatic pressing parameters in step C are: 160 to 185Mpa/18 to 21 min.
Preferably, the time and temperature parameters of the degumming treatment in the step D are as follows:
heating the hearth to 100-190 ℃ in 500-750 minutes;
continuously increasing the temperature of the hearth to 180-260 ℃ in 280-420 minutes;
continuously increasing the temperature of the hearth to 200-300 ℃ within 750-1100 minutes;
continuously raising the temperature of the hearth to 290-390 ℃ in 1000-1800 minutes;
continuously increasing the temperature of the hearth to 380-480 ℃ in 390-500 minutes;
continuously increasing the temperature of the hearth to 450-580 ℃ in 280-420 minutes;
continuously increasing the temperature of the hearth to 500-620 ℃ in 50-180 minutes;
continuously increasing the temperature of the hearth to 600-720 ℃ in 30-110 minutes;
the furnace temperature is maintained at 600 to 720 degrees celsius for 40 to 90 minutes, ending the treatment.
Preferably, the time and temperature parameters of the degumming treatment in the step D are as follows:
heating the hearth to 150-170 ℃ in 590-620 minutes;
continuously increasing the temperature of the hearth to 190-220 ℃ within 350-380 minutes;
continuously increasing the temperature of the hearth to 240-270 ℃ in 950-980 minutes;
the temperature of the hearth is continuously increased to 340 to 370 ℃ in 1400 to 1550 minutes;
continuously increasing the temperature of the hearth to 410-440 ℃ in 470-500 minutes;
continuously raising the temperature of the hearth to 490-520 ℃ in 350-380 minutes;
continuously raising the temperature of the hearth to 570-600 ℃ in 80-110 minutes;
continuously increasing the temperature of the hearth to 640-670 ℃ in 50-80 minutes;
the furnace temperature is maintained at 640 to 670 ℃ for 50 to 80 minutes, and the treatment is finished.
Preferably, the time and temperature parameters of the sintering treatment in the step E are as follows:
the temperature of the hearth is increased to 18 to 70 ℃ in 15 to 60 minutes;
continuously increasing the temperature of the hearth to 60-320 ℃ in 80-200 minutes;
continuously increasing the temperature of the hearth to 200-850 ℃ in 250-420 minutes;
continuously raising the temperature of the hearth to 600-1300 ℃ in 240-380 minutes;
continuously raising the temperature of the hearth to 1000-1600 ℃ in 40-150 minutes;
the furnace temperature is maintained at 1000 to 1600 ℃ for 180 to 300 minutes, and the treatment is finished.
Preferably, the time and temperature parameters of the sintering treatment in the step E are as follows:
raising the temperature of the hearth to 22-40 ℃ in 25-40 minutes;
continuously increasing the temperature of the hearth to 100-140 ℃ in 110-140 minutes;
continuously increasing the temperature of the hearth to 500-620 ℃ within 350-390 minutes;
continuously raising the temperature of the hearth to 1000-1170 ℃ in 290-320 minutes;
continuously raising the temperature of the hearth to 1350-1440 ℃ in 80-110 minutes;
the furnace temperature was maintained at 1350 to 1440 degrees celsius for 230 to 260 minutes, ending the treatment.
Preferably, after the sintering treatment in the step E is completed, the following processes are sequentially performed: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
The invention has the beneficial effects that: the production process of color ceramic with clear boundary line is provided, during practical production, single color blanks of different colors are superposed and matched with specific processing parameters to produce ceramic product with clear color boundary line, rich color and excellent corrosion resistance and friction resistance, and the ceramic product has rich look and feel. Meanwhile, the material advantages of the ceramic are matched, and the ceramic is not inferior to the existing common glass replacement scheme.
The colorful ceramic green body with various colors and distinct boundary lines is prepared by dry pressing of ceramic powder and assembly of single-color blanks, and the colorful ceramic with various colors and distinct boundary lines is prepared by a conventional ceramic manufacturing process.
In addition, by utilizing the fine shrinkage difference selection of different materials, the mechanical property of the prepared ceramic can be improved through combined design, so that the ceramic has the advantages in application compared with ceramics prepared by other processes.
Drawings
FIG. 1 is a schematic block diagram of the process of the present invention.
FIG. 2 is a schematic perspective view of a plurality of single-color green compacts separated according to the present invention.
Fig. 3 is a schematic perspective view of a plurality of single-color green blanks stacked in an arrangement.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
As shown in fig. 1 to 3, the present application presses a single green blank 1 by a dry pressing process. Then, the color blanks are assembled by the single-color raw blanks 1, and the obtained color blanks are further processed by a series of processing treatments to obtain the ceramic back plate with various colors and distinct limits. The ceramic back plate is taken as an example in the present application, and the protection scope is not limited to the ceramic back plate.
The single-color raw blank 1 is formed on the basis of dry pressing;
the ceramic materials for the single-color raw blank 1 are all colored ceramic dry pressed powder, such as pink zirconia dry pressed powder, black zirconia powder, white zirconia powder, dark green zirconia powder and the like, and the ceramic powder comprises, but is not limited to, zirconia powder with the colors and other components;
the functional part of the ceramic powder, namely the ceramic powder with various colors, should have similar sintering temperature and basically one-to-one expansion curve.
The thickness of the single-color raw blank 1 is 0.1-10 mm, and the thickness of the back plate is preferably 0.2-2 mm, and further preferably 0.6-1.2 mm;
the dry pressing single-color green body forming equipment is not specially limited and can be any one of a mechanical press and a hydraulic press;
the single-color raw blank 1 is assembled into a color blank, can be obtained by stacking single-color raw blank sheets according to a certain rule, then encapsulating and isostatic pressing, and can also be assembled by pressing single-color raw blanks layer by layer through a dry press (the assembled colorful blank can be subjected to encapsulation and isostatic pressing treatment selectively;
the color blanks may be first transferred to a flat jig (e.g., a glass plate) and then placed together in a bag for packaging.
The isostatic pressing is not particularly limited, and can be any one of cold isostatic pressing and warm isostatic pressing;
the further processing of the multicolor green body is generally as follows: the two steps are provided with two special devices for respectively finishing the steps such as a glue discharging furnace and a sintering furnace, and can also be provided with one device for simultaneously finishing the steps such as a discharging and burning integrated tunnel furnace;
the colorful ceramic processing includes but is not limited to grinding, polishing and filming.
The first embodiment is as follows:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 0.08 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 90 Mpa/8 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
raising the temperature of the hearth to 80 ℃ within 400 minutes;
continuously increasing the temperature of the hearth to 150 ℃ within 200 minutes;
continuously increasing the temperature of the hearth to 170 ℃ within 700 minutes;
continuously increasing the temperature of the hearth to 250 ℃ within 900 minutes;
continuously increasing the temperature of the hearth to 320 ℃ within 320 minutes;
continuously increasing the temperature of the hearth to 400 ℃ within 220 minutes;
continuously raising the temperature of the hearth to 490 ℃ within 35 minutes;
continuously increasing the temperature of the hearth to 500 ℃ within 20 minutes;
maintaining the temperature of the hearth at 500 ℃ for 30 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
the temperature of the hearth is increased to 15 ℃ within 12 minutes;
continuously increasing the temperature of the hearth to 45 ℃ within 60 minutes;
continuously increasing the temperature of the hearth to 180 ℃ within 210 minutes;
continuously increasing the temperature of the hearth to 500 ℃ within 200 minutes;
continuously increasing the temperature of the hearth to 900 ℃ within 30 minutes;
maintaining the temperature of the hearth at 900 ℃ within 140 minutes, finishing the treatment after the time is finished, and sequentially performing the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Example two:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 0.2 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 100 Mpa/10 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
heating the hearth to 100 ℃ within 500 minutes;
continuously increasing the temperature of the hearth to 180 ℃ within 280 minutes;
continuously increasing the temperature of the hearth to 200 ℃ within 750 minutes;
continuously increasing the temperature of the hearth to 290 ℃ within 1000 minutes;
continuously increasing the temperature of the hearth to 380 ℃ in 390 minutes;
continuously increasing the temperature of the hearth to 450 ℃ within 280 minutes;
continuously increasing the temperature of the hearth to 500 ℃ within 50 minutes;
continuously increasing the temperature of the hearth to 600 ℃ within 30 minutes;
maintaining the temperature of the hearth at 600 ℃ for 40 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
the temperature of the hearth is increased to 18 ℃ in 15 minutes;
continuously increasing the temperature of the hearth to 60 ℃ within 80 minutes;
continuously increasing the temperature of the hearth to 200 ℃ within 250 minutes;
continuously increasing the temperature of the hearth to 600 ℃ within 240 minutes;
continuously raising the temperature of the hearth to 1000 ℃ within 40 minutes;
maintaining the temperature of the hearth at 1000 ℃ for 180 minutes, finishing the treatment after the time is finished, and sequentially performing the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Example three:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 0.4 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 160 Mpa/18 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
the temperature of the hearth is increased to 150 ℃ in 590 minutes;
continuously increasing the temperature of the hearth to 190 ℃ within 350 minutes;
continuously increasing the temperature of the hearth to 240 ℃ within 950 minutes;
the temperature of the hearth is continuously increased to 340 ℃ in 1400 minutes;
continuously increasing the temperature of the hearth to 410 ℃ within 470 minutes;
continuously raising the temperature of the hearth to 490 ℃ within 350 minutes;
continuously increasing the temperature of the hearth to 570 ℃ within 80 minutes;
continuously raising the temperature of the hearth to 640 ℃ within 50 minutes;
maintaining the temperature of the hearth at 640 ℃ for 50 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
the temperature of the hearth is increased to 22 ℃ in 25 minutes;
continuously increasing the temperature of the hearth to 100 ℃ within 110 minutes;
continuously increasing the temperature of the hearth to 500 ℃ within 350 minutes;
continuously raising the temperature of the hearth to 1000 ℃ within 290 minutes;
continuously raising the temperature of the hearth to 1350 ℃ in 80 minutes;
maintaining the temperature of the hearth at 1350 ℃ in 230 minutes, finishing the treatment after the time is finished, and sequentially performing the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Example four:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 0.7 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 170 Mpa/20 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
the temperature of the hearth is increased to 170 ℃ within 610 minutes;
continuously increasing the temperature of the hearth to 210 ℃ within 370 minutes;
the temperature of the hearth is continuously increased to 260 ℃ in 970 minutes;
continuously increasing the temperature of the hearth to 360 ℃ in 1550 minutes;
the temperature of the hearth is continuously increased to 430 ℃ in 490 minutes;
continuously increasing the temperature of the hearth to 520 ℃ within 370 minutes;
continuously increasing the temperature of the hearth to 600 ℃ within 100 minutes;
continuously increasing the temperature of the hearth to 660 ℃ within 70 minutes;
maintaining the temperature of the hearth at 660 ℃ for 70 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
the temperature of the hearth is increased to 28 ℃ within 28 minutes;
continuously increasing the temperature of the hearth to 110 ℃ within 120 minutes;
the temperature of the hearth is continuously increased to 570 ℃ in 365 minutes;
continuously raising the temperature of the hearth to 1100 ℃ within 300 minutes;
continuously raising the temperature of the hearth to 1400 ℃ within 95 minutes;
maintaining the temperature of the hearth at 1400 ℃ for 250 minutes, finishing the treatment after the time is finished, and sequentially performing the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Example five:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 1.6 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 185 Mpa/21 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
the temperature of the hearth is increased to 190 ℃ within 650 minutes;
continuously increasing the temperature of the hearth to 230 ℃ within 400 minutes;
the temperature of the hearth is continuously increased to 280 ℃ within 990 minutes;
continuously increasing the temperature of the hearth to 380 ℃ in 1570 minutes;
continuously increasing the temperature of the hearth to 450 ℃ within 500 minutes;
the temperature of the hearth is continuously increased to 540 ℃ in 390 minutes;
continuously increasing the temperature of the hearth to 630 ℃ within 120 minutes;
continuously increasing the temperature of the hearth to 680 ℃ in 90 minutes;
maintaining the temperature of the hearth at 680 ℃ for 90 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
the temperature of the hearth is increased to 40 ℃ within 40 minutes;
continuously increasing the temperature of the hearth to 140 ℃ within 140 minutes;
continuously increasing the temperature of the hearth to 620 ℃ within 390 minutes;
the temperature of the hearth is continuously increased to 1170 ℃ in 320 minutes;
continuously raising the temperature of the hearth to 1440 ℃ within 110 minutes;
maintaining the temperature of the hearth at 1440 ℃ for 260 minutes, finishing the treatment after the time is finished, and sequentially carrying out the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Example six:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 2 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 200 Mpa/30 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
the temperature of the hearth is increased to 190 ℃ within 750 minutes;
continuously increasing the temperature of the hearth to 260 ℃ within 420 minutes;
the temperature of the hearth is continuously increased to 300 ℃ within 1100 minutes;
continuously increasing the temperature of the hearth to 390 ℃ within 1800 minutes;
continuously increasing the temperature of the hearth to 480 ℃ within 500 minutes;
continuously increasing the temperature of the hearth to 580 ℃ within 420 minutes;
continuously raising the temperature of the hearth to 640 ℃ within 180 minutes;
continuously increasing the temperature of the hearth to 720 ℃ within 110 minutes;
maintaining the temperature of the hearth at 720 ℃ for 90 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
raising the temperature of the hearth to 70 ℃ within 60 minutes;
continuously increasing the temperature of the hearth to 320 ℃ within 200 minutes;
continuously increasing the temperature of the hearth to 850 ℃ within 420 minutes;
the temperature of the hearth is continuously raised to 1300 ℃ within 380 minutes;
continuously raising the temperature of the hearth to 1600 ℃ within 150 minutes;
maintaining the temperature of the hearth at 1600 ℃ in 300 minutes, finishing the treatment after the time is finished, and sequentially carrying out the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Example seven:
step A: ceramic powder with different colors is used for dry pressing and forming to respectively prepare a plurality of single-color raw blanks 1 with independent colors, and the thickness of each single-color raw blank 1 is 4 mm;
and B: arranging and stacking a plurality of single-color raw blanks 1 with different colors according to design requirements to obtain color blanks, wherein a layer of separation adhesive film is attached to the topmost surface and the bottommost surface of each color blank;
and C: firstly, filling the color blank into a packaging bag for packaging, and then carrying out isostatic pressing treatment, wherein the isostatic pressing treatment parameters are as follows: 220 Mpa/35 min;
step D: and (3) carrying out glue discharging treatment on the color blank subjected to isostatic pressing treatment, wherein the time and temperature parameters of the glue discharging treatment are as follows:
heating the hearth to 220 ℃ in 790 minutes;
continuously increasing the temperature of the hearth to 280 ℃ within 450 minutes;
continuously increasing the temperature of the hearth to 320 ℃ within 1200 minutes;
continuously increasing the temperature of the hearth to 400 ℃ within 1900 minutes;
continuously increasing the temperature of the hearth to 500 ℃ within 520 minutes;
continuously increasing the temperature of the hearth to 600 ℃ within 450 minutes;
continuously increasing the temperature of the hearth to 650 ℃ within 200 minutes;
continuously increasing the temperature of the hearth to 760 ℃ within 120 minutes;
maintaining the temperature of the hearth at 760 ℃ within 100 minutes, and finishing the treatment after the time is over;
step E: and sintering the color blank subjected to the binder removal treatment, wherein the time and temperature parameters of the sintering treatment are as follows:
the temperature of the hearth is increased to 80 ℃ in 75 minutes;
continuously increasing the temperature of the hearth to 350 ℃ within 220 minutes;
continuously increasing the temperature of the hearth to 900 ℃ within 450 minutes;
continuously raising the temperature of the hearth to 1400 ℃ within 400 minutes;
continuously raising the temperature of the hearth to 1650 ℃ in 160 minutes;
maintaining the temperature of the hearth at 1650 ℃ in 350 minutes, finishing the treatment after the time is finished, and sequentially performing the following processes after the sintering treatment is finished: and trimming, CNC processing of the shape, fine grinding, polishing and film coating to obtain the colored ceramic.
Examples one to seven were all made by arranging and stacking them according to design requirements, so examples one to seven were made of colored ceramic plates, which were subjected to a vibration friction test, a boiling test and a salt spray test according to the following parameters:
1. the vibration friction test method comprises the following steps: 5 parts of RKF10K and 2 parts of RKK15P, which are 20L in total, are prepared and put into a ROSLER grinding tank of a vibration device, FC 1206 ml and 400ml of clean water are added, 0.5L of clean water is added after 5 minutes, and seven colored ceramic plates are put into the ROSLER grinding tank for testing, wherein 0.5L of clean water is added every 60 minutes during the vibration testing. After ten hours, the seven colored ceramic plates were taken out, subjected to appearance inspection, and observed whether the color boundary lines were clear.
2. Boiling test method: and completely immersing seven color ceramic plates into clear water, heating the clear water to a state of about 85 ℃, taking out all the color ceramic plates after 30min, standing for 3 hours at normal temperature, and taking out all the color ceramic plates to check whether steam pockets occur or not, whether color is changed or not and whether cracks occur between two adjacent single-color raw blanks 1 or not.
3. The salt spray test method comprises the following steps: placing seven colored ceramic plates in acetate fog detection equipment, and carrying out 24-hour test, wherein the test parameters are as follows: the temperature of the test box is 35 +/-2 ℃, the concentration of saline water is 50g +/-5 g/L, the pH value of the saline water is 3.2 +/-0.1, the defogging amount of the saline water is 1-2 ml/80cm2, and the relative humidity in the test box is more than or equal to 95%. After the time is over, all the parts are taken out to detect whether corrosion spots and bubbles appear.
Combining the above and testing table data, wherein the preparation parameters of example one and example seven are not within the claimed parameters, and the preparation parameters of example two, example three, example four, example five and example six are within the claimed protection range, the experimental results obtained by observing the test data table of example two, example three, example four, example five and example six are better than those of example one and example seven, although the test results of example two and example six are not so perfect, the conventional use will not cause obvious problems, and most consumers will accept the test results, and the selling price will be relatively low, thus being easy to expand the market.
It can be known from the test data that the better effect can be obtained without increasing or decreasing the relevant processing parameters, and the increase of the preparation parameters does not bring about significant effect, and greatly increases the production cost, so that the parameter range defined by the claims can be obviously judged to manufacture the ceramic plate with clear boundary, rich colors and good corrosion resistance and friction resistance, and the protection range of the claims of the invention can be sufficiently supported.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
The above-mentioned embodiments only express a plurality of embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The manufacturing process of the color ceramic with clear boundary lines is characterized in that: comprises the following steps of (a) carrying out,
step A: ceramic powder with different colors are respectively made into a plurality of single-color green blanks (1) with independent colors;
and B: combining a plurality of single-color raw blanks (1) with different colors to obtain a color blank;
and C: carrying out isostatic pressing treatment on the color blank;
step D: performing glue discharging treatment on the color blank subjected to isostatic pressing treatment;
step E: sintering the color blank subjected to the binder removal treatment to obtain color ceramic;
and D, the time and temperature parameters of the glue discharging treatment in the step D are as follows:
heating the hearth to 100-190 ℃ in 500-750 minutes;
continuously increasing the temperature of the hearth to 180-260 ℃ in 280-420 minutes;
continuously increasing the temperature of the hearth to 200-300 ℃ within 750-1100 minutes;
continuously raising the temperature of the hearth to 290-390 ℃ in 1000-1800 minutes;
continuously increasing the temperature of the hearth to 380-480 ℃ in 390-500 minutes;
continuously increasing the temperature of the hearth to 450-580 ℃ in 280-420 minutes;
continuously increasing the temperature of the hearth to 500-620 ℃ in 50-180 minutes;
continuously increasing the temperature of the hearth to 600-720 ℃ in 30-110 minutes;
maintaining the temperature of the hearth at 600-720 ℃ for 40-90 minutes, and finishing the treatment after the time is up;
the time and temperature parameters of the sintering treatment in the step E are as follows:
the temperature of the hearth is increased to 18 to 70 ℃ in 15 to 60 minutes;
continuously increasing the temperature of the hearth to 60-320 ℃ in 80-200 minutes;
continuously increasing the temperature of the hearth to 200-850 ℃ in 250-420 minutes;
continuously raising the temperature of the hearth to 600-1300 ℃ in 240-380 minutes;
continuously raising the temperature of the hearth to 1000-1600 ℃ in 40-150 minutes;
the furnace temperature is maintained at 1000 to 1600 ℃ for 180 to 300 minutes, and the treatment is finished.
2. The well-defined colored ceramic manufacturing process of claim 1, wherein: and (B) respectively preparing a plurality of single-color green blanks (1) with the single colors from the ceramic powder with different colors in the step (A) through dry pressing.
3. The well-defined colored ceramic manufacturing process of claim 1, wherein: the thickness of the single-color green blank (1) in the step A is 0.1 to 10 mm.
4. The well-defined colored ceramic manufacturing process of claim 1, wherein: and B, arranging and stacking a plurality of single-color raw blanks (1) with different colors in the step B to obtain color blanks.
5. The well-defined colored ceramic manufacturing process of claim 1, wherein: the isostatic pressing parameters in the step C are as follows: 100 to 200Mpa/10 to 30 min.
6. The well-defined colored ceramic manufacturing process of claim 1, wherein: the isostatic pressing parameters in the step C are as follows: 160 to 185Mpa/18 to 21 min.
7. The well-defined colored ceramic manufacturing process of claim 1, wherein: and D, the time and temperature parameters of the glue discharging treatment in the step D are as follows:
heating the hearth to 150-170 ℃ in 590-620 minutes;
continuously increasing the temperature of the hearth to 190-220 ℃ within 350-380 minutes;
continuously increasing the temperature of the hearth to 240-270 ℃ in 950-980 minutes;
the temperature of the hearth is continuously increased to 340 to 370 ℃ in 1400 to 1550 minutes;
continuously increasing the temperature of the hearth to 410-440 ℃ in 470-500 minutes;
continuously raising the temperature of the hearth to 490-520 ℃ in 350-380 minutes;
continuously raising the temperature of the hearth to 570-600 ℃ in 80-110 minutes;
continuously increasing the temperature of the hearth to 640-670 ℃ in 50-80 minutes;
the furnace temperature is maintained at 640 to 670 ℃ for 50 to 80 minutes, and the treatment is finished.
8. The well-defined colored ceramic manufacturing process of claim 1, wherein: the time and temperature parameters of the sintering treatment in the step E are as follows:
raising the temperature of the hearth to 22-40 ℃ in 25-40 minutes;
continuously increasing the temperature of the hearth to 100-140 ℃ in 110-140 minutes;
continuously increasing the temperature of the hearth to 500-620 ℃ within 350-390 minutes;
continuously raising the temperature of the hearth to 1000-1170 ℃ in 290-320 minutes;
continuously raising the temperature of the hearth to 1350-1440 ℃ in 80-110 minutes;
the furnace temperature was maintained at 1350 to 1440 degrees celsius for 230 to 260 minutes, ending the treatment.
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| JP2001192272A (en) * | 1999-10-25 | 2001-07-17 | Ibiden Co Ltd | Production process of nitride ceramic sintered body |
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| JP2001192272A (en) * | 1999-10-25 | 2001-07-17 | Ibiden Co Ltd | Production process of nitride ceramic sintered body |
| CN105130430A (en) * | 2015-08-25 | 2015-12-09 | 深圳百工精艺材料技术有限公司 | Ceramic sheet and preparation method therefor |
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