CN107986778A - A kind of technological process of production for being injected into shape base zirconia ceramics product - Google Patents

A kind of technological process of production for being injected into shape base zirconia ceramics product Download PDF

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Publication number
CN107986778A
CN107986778A CN201711285022.7A CN201711285022A CN107986778A CN 107986778 A CN107986778 A CN 107986778A CN 201711285022 A CN201711285022 A CN 201711285022A CN 107986778 A CN107986778 A CN 107986778A
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Prior art keywords
injection
base substrate
degreasing
zirconia ceramics
base
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CN201711285022.7A
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Chinese (zh)
Inventor
张成华
吴中阳
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Suining City Ming Chuan Lingerling Technology Co Ltd
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Suining City Ming Chuan Lingerling Technology Co Ltd
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Priority to CN201711285022.7A priority Critical patent/CN107986778A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658—Atmosphere during thermal treatment
    • C04B2235/6586—Processes characterised by the flow of gas
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering

Abstract

The invention discloses a kind of technological process of production for being injected into shape base zirconia ceramics product, which comprises the following steps that：S1：Injection moulding, S2：The degreasing of base substrate, S3：High temperature sintering processing.The present invention is using injection moulding, ungrease treatment and fires branch's progress, firing to ceramics is more rationally scientific, while has the heating temperature reduction technology of stringent science in sintering procedure, more scientific, making to zirconia ceramics product more has science, and product quality greatly improves.

Description

A kind of technological process of production for being injected into shape base zirconia ceramics product
Technical field
The present invention relates to zirconia ceramics technical field, is specially a kind of life for being injected into shape base zirconia ceramics product Production. art flow.
Background technology
The modeling base zirconium oxide granulation material of ceramic product is injection moulded, when applied to injection moulding ceramic product, is entirely capable of Produce single-piece zirconia ceramics base substrate weight and be more than 25 grams of product, or it is backboard of the size dimension more than 250mm, panel, outer See part, curved-surface piece, three D structural members etc., when carrying out degreasing link to injection molding base substrate in production process, because in granulation material not Containing cured, the exhaust gas without evaporative emission air in 100 DEG C or so of debinding furnace.Burnt using base zirconium oxide granulation material is moulded Potting porcelain needs specific technological process, and the research to burning process is the problem of we need to face.
The content of the invention
It is an object of the invention to provide a kind of technological process of production for being injected into shape base zirconia ceramics product, the note The technological process of production for penetrating into shape base zirconia ceramics product comprises the following steps that：
S1：Injection moulding, uses injection ejaculator to be injection moulded modeling base zirconium oxide granulation material for raw material, is injected into Type includes the following steps：
1) lectotype selection, selects the full-automatic numerical control injection ejaculator of model 50T-300T；
2) equipment preheats, and the screw rod for being molded ejaculator first is pre-heated to following segment temperature：
210 DEG C -250 DEG C of nozzle section, one section 190 DEG C -220 DEG C, two sections 190 DEG C -220 DEG C, three sections 190 DEG C -220 DEG C, four 180 DEG C -210 DEG C of section；
3) feed, modeling base zirconium oxide granulation material is poured into equipment storage bin hopper, is base by weight then according to base substrate weight The granulation material that body weight is multiplied by 110%-130% adds screw rod intracavitary；
4) injection, according to required base substrate size and structure type, point 2 sections of -5 sections of injections, each section of injection speed is pressed Setting is adjusted between 20mm-100mm, each section of injection pressure adjusts setting between pressing 30Pam-90Pam；
5) pressurize, after the completion of injection, between the dwell time presses -10 seconds 0.1 second adjustment carry out pressurize；
6) mold, eject, open blank forming tungsten steel die, after delay -15 seconds 3 seconds, the base substrate in ejection die；
S2：The degreasing of base substrate, carries out ungrease treatment, ungrease treatment includes the following steps to injection molding base substrate：
1) lectotype selection, using the full-automatic debinding furnace of a diameter of 600mm-2000mm；
2) base substrate is put, and is kept flat or is placed vertically base substrate layering isolation on stainless (steel) wire screen work, be then pushed into debinding furnace stove In thorax；
3) first time degreasing, sets 90 DEG C -100 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2-3 Ml/min, when duration 1-2 is small；
4) second of degreasing, sets 100 DEG C -110 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2-3 Ml/min, when duration 2-3 is small；
5) third time degreasing, sets 110 DEG C -120 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2- Ml/min, when duration 3-4 is small；
6) take out, after degreasing rate reaches blank body fat content 7%-15%, when allowing the debinding furnace to be naturally cooling to room temperature, take Go out degreasing blank.
S3：High temperature sintering processing, high temperature sintering can use shuttle-type electrical kiln or shuttle firing kiln, or tunnel oven or push plate Kiln is fired, and finished product is can be prepared by after the completion of firing.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is using injection moulding, ungrease treatment and firing point Portion carries out, and the firing to ceramics is more rationally scientific, while has the heating temperature reduction technology of stringent science in sintering procedure, more Add scientific, making to zirconia ceramics product more has science, and product quality greatly improves.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not For limiting the present invention.
Embodiment 1
A kind of technological process of production for being injected into shape base zirconia ceramics product, this is injected into shape base zirconia ceramics The technological process of production of product comprises the following steps that：
S1：Injection moulding, uses injection ejaculator to be injection moulded modeling base zirconium oxide granulation material for raw material, is injected into Type includes the following steps：
1) lectotype selection, selects the full-automatic numerical control injection ejaculator of model 50T-300T；
2) equipment preheats, and the screw rod for being molded ejaculator first is pre-heated to following segment temperature：
210 DEG C -250 DEG C of nozzle section, one section 190 DEG C -220 DEG C, two sections 190 DEG C -220 DEG C, three sections 190 DEG C -220 DEG C, four 180 DEG C -210 DEG C of section；
3) feed, modeling base zirconium oxide granulation material is poured into equipment storage bin hopper, is base by weight then according to base substrate weight The granulation material that body weight is multiplied by 110%-130% adds screw rod intracavitary；
4) injection, according to required base substrate size and structure type, point 2 sections of -5 sections of injections, each section of injection speed is pressed Setting is adjusted between 20mm-100mm, each section of injection pressure adjusts setting between pressing 30Pam-90Pam；
5) pressurize, after the completion of injection, between the dwell time presses -10 seconds 0.1 second adjustment carry out pressurize；
6) mold, eject, open blank forming tungsten steel die, after delay -15 seconds 3 seconds, the base substrate in ejection die；
S2：The degreasing of base substrate, carries out ungrease treatment, ungrease treatment includes the following steps to injection molding base substrate：
1) lectotype selection, using the full-automatic debinding furnace of a diameter of 600mm-2000mm；
2) base substrate is put, and is kept flat or is placed vertically base substrate layering isolation on stainless (steel) wire screen work, be then pushed into debinding furnace stove In thorax；
3) first time degreasing, sets 90 DEG C -100 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2-3 Ml/min, when duration 1-2 is small；
4) second of degreasing, sets 100 DEG C -110 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2-3 Ml/min, when duration 2-3 is small；
5) third time degreasing, sets 110 DEG C -120 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2- Ml/min, when duration 3-4 is small；
6) take out, after degreasing rate reaches blank body fat content 7%-15%, when allowing the debinding furnace to be naturally cooling to room temperature, take Go out degreasing blank.
S3：High temperature sintering processing, high temperature sintering can use shuttle-type electrical kiln or shuttle firing kiln, or tunnel oven or push plate Kiln is fired, and finished product is can be prepared by after the completion of firing.
Heating, constant temperature when shuttle-type electrical kiln or shuttle firing kiln firing product, cooling numerical value：
- 100 DEG C of room temperature, heats up naturally, and the period is by when about 1-2 is small；
100 DEG C insulation, the period by 0.5 it is small when；
100 DEG C -160 DEG C, per hour rise 20 DEG C, the period by 3 it is small when；
160 DEG C insulation, the period by 0.5 it is small when；
160 DEG C -260 DEG C, per hour rise 10 DEG C, the period by 10 it is small when；
260 DEG C insulation, the period by 0.5 it is small when；
260 DEG C -460 DEG C, per hour rise 10 DEG C, the period by 20 it is small when；
460 DEG C insulation, the period by 0.5 it is small when；
460 DEG C -660 DEG C, per hour rise 10 DEG C, the period by 20 it is small when；
660 DEG C insulation, the period by 0.5 it is small when；
660 DEG C -1160 DEG C, per hour rise 50 DEG C, the period by 10 it is small when；
1160 DEG C insulation, the period by 2 it is small when；
1160 DEG C -1560 DEG C, per hour rise 100 DEG C, the period by 4 it is small when；
1560 DEG C insulation, the period by 2 it is small when.
The warm area of tunnel oven or pushed bat kiln presses following distribution：
Heating-cooling section point：- 100 DEG C of room temperature, 100 DEG C -200 DEG C, 200 DEG C -400 DEG C, 400 DEG C -600 DEG C, 600 DEG C - 800 DEG C, 800 DEG C -1200 DEG C, 1200 DEG C -1600 DEG C, Temperature fall area, totally 8 warm area sections.
The present invention is using injection moulding, ungrease treatment and fires branch's progress, and the firing to ceramics is more rationally scientific, There is the heating temperature reduction technology of stringent science in sintering procedure at the same time, more scientific, the making to zirconia ceramics product is more Add and greatly improved with science, product quality.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (1)

  1. A kind of 1. technological process of production for being injected into shape base zirconia ceramics product, it is characterised in that：This is injected into shape base The technological process of production of zirconia ceramics product comprises the following steps that：
    S1：Injection moulding, uses injection ejaculator to be injection moulded modeling base zirconium oxide granulation material for raw material, injection moulding bag Include following steps：
    1) lectotype selection, selects the full-automatic numerical control injection ejaculator of model 50T-300T；
    2) equipment preheats, and the screw rod for being molded ejaculator first is pre-heated to following segment temperature：
    210 DEG C -250 DEG C of nozzle section, one section 190 DEG C -220 DEG C, two sections 190 DEG C -220 DEG C, three sections 190 DEG C -220 DEG C, four section 180 ℃-210℃；
    3) feed, modeling base zirconium oxide granulation material is poured into equipment storage bin hopper, is base substrate weight by weight then according to base substrate weight The granulation material that amount is multiplied by 110%-130% adds screw rod intracavitary；
    4) injection, according to required base substrate size and structure type, point 2 sections of -5 sections of injections, each section of injection speed presses 20mm- Setting is adjusted between 100mm, each section of injection pressure adjusts setting between pressing 30Pam-90Pam；
    5) pressurize, after the completion of injection, between the dwell time presses -10 seconds 0.1 second adjustment carry out pressurize；
    6) mold, eject, open blank forming tungsten steel die, after delay -15 seconds 3 seconds, the base substrate in ejection die；
    S2：The degreasing of base substrate, carries out ungrease treatment, ungrease treatment includes the following steps to injection molding base substrate：
    1) lectotype selection, using the full-automatic debinding furnace of a diameter of 600mm-2000mm；
    2) base substrate is put, and is kept flat or is placed vertically base substrate layering isolation on stainless (steel) wire screen work, be then pushed into debinding furnace burner hearth；
    3) first time degreasing, 90 DEG C -100 DEG C of fire box temperature of setting, 4 cubic meters/hour of nitrogen flow, 2-3 milliliters of nitric acid flow quantity/ Minute, when duration 1-2 is small；
    4) second of degreasing, sets 100 DEG C -110 DEG C of fire box temperature, 4 cubic meters/hour of nitrogen flow, nitric acid flow quantity 2-3 millis Liter/min, when duration 2-3 is small；
    5) third time degreasing, 110 DEG C -120 DEG C of fire box temperature of setting, 4 cubic meters/hour of nitrogen flow, 2- milliliters of nitric acid flow quantity/ Minute, when duration 3-4 is small；
    6) take out, after degreasing rate reaches blank body fat content 7%-15%, when allowing the debinding furnace to be naturally cooling to room temperature, take out Degreasing blank.
    S3：High temperature sintering processing, high temperature sintering can use shuttle-type electrical kiln or shuttle firing kiln, or tunnel oven or pushed bat kiln into Row is fired, and finished product is can be prepared by after the completion of firing.
CN201711285022.7A 2017-12-07 2017-12-07 A kind of technological process of production for being injected into shape base zirconia ceramics product Pending CN107986778A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110668813A (en) * 2019-09-18 2020-01-10 苏州炻原新材料科技有限公司 Preparation method of nano zirconia granulated powder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107056287A (en) * 2017-05-17 2017-08-18 江苏铭百圣耐火有限公司 A kind of production technology of zirconia ceramics panel applied to electronic operation device
CN107056285A (en) * 2017-04-07 2017-08-18 江苏铭百圣耐火有限公司 A kind of technological process of production for being injected into shape base zirconia ceramics product
CN107117961A (en) * 2017-04-07 2017-09-01 江苏铭百圣耐火有限公司 A kind of modeling base zirconium oxide applied to injection moulding ceramic product granulates preparation method for material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107056285A (en) * 2017-04-07 2017-08-18 江苏铭百圣耐火有限公司 A kind of technological process of production for being injected into shape base zirconia ceramics product
CN107117961A (en) * 2017-04-07 2017-09-01 江苏铭百圣耐火有限公司 A kind of modeling base zirconium oxide applied to injection moulding ceramic product granulates preparation method for material
CN107056287A (en) * 2017-05-17 2017-08-18 江苏铭百圣耐火有限公司 A kind of production technology of zirconia ceramics panel applied to electronic operation device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110668813A (en) * 2019-09-18 2020-01-10 苏州炻原新材料科技有限公司 Preparation method of nano zirconia granulated powder
CN110668812A (en) * 2019-09-18 2020-01-10 苏州炻原新材料科技有限公司 Nano zirconium oxide spraying powder and preparation method thereof
CN110845233A (en) * 2019-09-18 2020-02-28 苏州炻原新材料科技有限公司 Preparation method of superfine zirconia grinding ball
CN110668812B (en) * 2019-09-18 2021-10-26 苏州炻原新材料科技有限公司 Nano zirconium oxide spraying powder and preparation method thereof

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