CN109020562B - Glue discharging process for high-temperature porcelain forming of automobile ceramic functional part - Google Patents
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Abstract
The invention discloses a glue removing process for high-temperature porcelain forming of automobile ceramic functional parts, which is characterized by comprising the following steps of: the method comprises the following steps of loading products into a bowl, sintering the products in a high-temperature kiln, arranging at least three temperature zones in the front of the high-temperature kiln, enabling the products to stay in each temperature zone for a certain time and then to be pushed to the next temperature zone, and arranging a heating mechanism in each temperature zone to perform step heating on the products. The invention is mainly suitable for the front-section glue discharging process in the high-temperature sintering process of the new energy automobile battery sealing connector, and mainly solves the problems of nonuniform glue discharging heating and short service life of heating components.
Description
Technical Field
The invention relates to the technical field of battery sealing connection, in particular to a glue removing process for high-temperature porcelain forming of an automobile ceramic functional part.
Background
The new ceramic is formed by adding more organic adhesive and plasticizer, such as paraffin wax for hot-press molding, rolled film, polyvinyl alcohol for tape casting, etc. During sintering, a large amount of organic matters in the green body are melted, decomposed and volatilized, so that the green body is deformed and cracked, and meanwhile, the carbon content of the organic matters is high, and when oxygen is insufficient to form a reducing atmosphere, the sintering quality is influenced. Therefore, organic matters in the green body need to be removed before the green body is fired so as to meet the requirements of the shape, the size and the quality of a product, and the process is glue removal.
Due to the rapid development of new energy vehicles, the demand of battery sealing connectors is increasing. In the high temperature sintering process, the wax in-process is arranged to the anterior segment, uses traditional silicon molybdenum stick to arrange and glues, and the elema has the inhomogeneous and life that generate heat and hangs down, is unfavorable for the sintering of product.
Therefore, the development of the glue removing process for high-temperature porcelain forming of the automobile ceramic functional part has urgent research value, and also has good economic benefit and industrial application potential, which is the basis and the place where the invention can be completed.
Disclosure of Invention
The present inventors have conducted intensive studies to overcome the above-identified drawbacks of the prior art, and as a result, have completed the present invention after having made a great deal of creative efforts.
Specifically, the technical problems to be solved by the present invention are: the glue discharging process for high-temperature porcelain forming of the automobile ceramic functional component is provided, so that the sintering yield of the product is improved.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a binder removal technology of car ceramic functional unit high temperature porcelain, gets into the sintering of high temperature kiln with product dress alms bowl, the front portion of high temperature kiln sets up at least three warm-area, the product impels to next warm-area after the certain time of detention in every warm-area, the warm-area is provided with heating mechanism and carries out the step heating to the product.
In the invention, as an improvement, the product is formed by pressing 95 alumina powder and a bonding agent.
In the invention, as an improvement, the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid.
In the invention, as an improvement, a first temperature zone, a second temperature zone and a third temperature zone are arranged in sequence at the front part of the high-temperature kiln, and the heating temperature of the product is gradually increased from the first temperature zone to the third temperature zone.
In the invention, as an improvement, the heating temperature of the first temperature zone to the product is 200-240 ℃, and the length of the first temperature zone is 1080 mm.
In the invention, as an improvement, the heating temperature of the second temperature zone to the product is 250-340 ℃, and the length of the second temperature zone is 1620 mm.
In the invention, as an improvement, the heating temperature of the third temperature zone to the product is 350-500 ℃, and the length of the third temperature zone is 1620 mm.
In the present invention, as a modification, the residence time of the product in each temperature zone is 30 to 50 minutes.
In the present invention, as a modification, the residence time of the product in the first temperature zone is optimally 50 minutes.
In the present invention, as a modification, the residence time of the product in the second temperature zone is optimally 40 minutes.
In the present invention, as a modification, the residence time of the product in the third temperature zone is optimally 30 minutes.
In the invention, as an improvement, the heating mechanism arranged in the temperature zone adopts an electric heating pipe.
After the technical scheme is adopted, the invention has the beneficial effects that:
the glue discharging of the sintered product is mainly concentrated in the first temperature zone, the second temperature zone and the third temperature zone, and the first temperature zone, the second temperature zone and the third temperature zone generate infrared heat by using electric heating tubes and uniformly radiate the infrared heat on the product, so that the product can be fully discharged, and the subsequent sintering and forming of the product are facilitated.
The heating temperature of the first temperature area, the second temperature area and the third temperature area is increased in a gradient manner, so that the adhesive can be effectively removed, and the conditions of high product porosity and low yield caused by instantaneous excessive adhesive removal can be avoided. The heating temperatures of the first temperature zone, the second temperature zone and the third temperature zone are suitable for the adhesive and the ceramic powder, and the adhesive and the ceramic powder are obtained through long-term practice by the inventor, have the best effect on the new energy automobile battery sealing connector, and have the optimal yield.
In conclusion, the invention is mainly suitable for the front-section glue discharging process in the high-temperature sintering process of the new energy automobile battery sealing connector, and the glue discharging process mainly solves the problems that glue discharging is not uniformly heated and the service life of a heating component is short.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples. The use and purpose of these exemplary embodiments are to illustrate the present invention, not to limit the actual scope of the present invention in any way, and not to limit the scope of the present invention in any way.
The utility model provides a binder removal technology of car ceramic functional unit high temperature porcelain, gets into the sintering of high temperature kiln with product dress alms bowl, the front portion of high temperature kiln sets up at least three warm-area, the product impels to next warm-area after the certain time of detention in every warm-area, the warm-area is provided with heating mechanism and carries out the step heating to the product.
Example 1
According to the glue discharging process for high-temperature porcelain forming of the automobile ceramic functional part, the automobile ceramic functional part is formed by pressing 95-alumina powder and an adhesive, and the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid, putting the product into a bowl, sintering in a high-temperature kiln, the front part of the high-temperature kiln is provided with a first temperature zone, a second temperature zone and a third temperature zone which are sequentially arranged, electric heating pipes are arranged in the first temperature zone, the second temperature zone and the third temperature zone from the first temperature zone to the third temperature zone for heating products, the heating temperature of the product is gradually increased, the product is pushed into a first temperature zone, the first temperature zone is heated from the initial temperature to the heating temperature (the temperature of a second temperature zone is simultaneously raised) at the speed of 15 ℃/min, the heating temperature of the product in the first temperature zone is 200 ℃ finally, the length of the first temperature zone is 1080mm, and the first temperature zone stays in the heating temperature environment of the first temperature zone for 30 minutes; pushing the product into a second temperature zone, wherein the heating temperature of the second temperature zone is increased from the heating temperature of the first temperature zone to the heating temperature of the second temperature zone (the heating temperature of the third temperature zone is simultaneously increased) at the rate of 10 ℃/min, the heating temperature of the second temperature zone to the product is 250 ℃, the length of the second temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 30 min; pushing the product into a third temperature zone, wherein the heating temperature of the third temperature zone is increased from the heating temperature of the second temperature zone to the heating temperature of the third temperature zone at the speed of 5 ℃/min, the heating temperature of the third temperature zone to the product is 350 ℃, the length of the third temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 30 minutes; and then the product is continuously pushed to sinter.
The yield of the finally obtained product is 89%.
Example 2
According to the glue discharging process for high-temperature porcelain forming of the automobile ceramic functional part, the automobile ceramic functional part is formed by pressing 95-alumina powder and an adhesive, and the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid, putting the product into a bowl, sintering in a high-temperature kiln, the front part of the high-temperature kiln is provided with a first temperature zone, a second temperature zone and a third temperature zone which are sequentially arranged, electric heating pipes are arranged in the first temperature zone, the second temperature zone and the third temperature zone from the first temperature zone to the third temperature zone for heating products, the heating temperature of the product is gradually increased, the product is pushed into a first temperature zone, the first temperature zone is heated from the initial temperature to the heating temperature (the second temperature zone is heated simultaneously) at the speed of 15 ℃/minute, the heating temperature of the product in the first temperature zone is 240 ℃ finally, the length of the first temperature zone is 1080mm, and the first temperature zone stays in the heating temperature environment of the first temperature zone for 50 minutes; pushing the product into a second temperature zone, wherein the heating temperature of the second temperature zone is increased from the heating temperature of the first temperature zone to the heating temperature of the second temperature zone (the heating temperature of the third temperature zone is simultaneously increased) at the rate of 10 ℃/min, the heating temperature of the second temperature zone to the product is 340 ℃, the length of the second temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 50 min; pushing the product into a third temperature zone, wherein the heating temperature of the third temperature zone is increased from the heating temperature of the second temperature zone to the heating temperature of the third temperature zone at the speed of 5 ℃/min, the heating temperature of the third temperature zone to the product is 500 ℃, the length of the third temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 50 min; and then the product is continuously pushed to sinter.
The yield of the finally obtained product is 87%.
Example 3
According to the glue discharging process for high-temperature porcelain forming of the automobile ceramic functional part, the automobile ceramic functional part is formed by pressing 95-alumina powder and an adhesive, and the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid, putting the product into a bowl, sintering in a high-temperature kiln, the front part of the high-temperature kiln is provided with a first temperature zone, a second temperature zone and a third temperature zone which are sequentially arranged, electric heating pipes are arranged in the first temperature zone, the second temperature zone and the third temperature zone from the first temperature zone to the third temperature zone for heating products, the heating temperature of the product is gradually increased, the product is pushed into a first temperature zone, the first temperature zone is heated from the initial temperature to the heating temperature (the second temperature zone is heated simultaneously) at the speed of 15 ℃/minute, the heating temperature of the product in the first temperature zone is 220 ℃, the length of the first temperature zone is 1080mm, and the first temperature zone stays in the heating temperature environment of the first temperature zone for 50 minutes; pushing the product into a second temperature zone, wherein the heating temperature of the second temperature zone is increased from the heating temperature of the first temperature zone to the heating temperature of the second temperature zone (the heating temperature of the third temperature zone is simultaneously increased) at the rate of 10 ℃/min, the heating temperature of the second temperature zone to the product is 300 ℃, the length of the second temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 40 min; pushing the product into a third temperature zone, wherein the heating temperature of the third temperature zone is increased from the heating temperature of the second temperature zone to the heating temperature of the third temperature zone at the speed of 5 ℃/min, the heating temperature of the third temperature zone to the product is 400 ℃, the length of the third temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 30 min; and then the product is continuously pushed to sinter.
The yield of the finally obtained product is 91%.
Example 4
According to the glue discharging process for high-temperature porcelain forming of the automobile ceramic functional part, the automobile ceramic functional part is formed by pressing 95-alumina powder and an adhesive, and the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid, putting the product into a bowl, sintering in a high-temperature kiln, the front part of the high-temperature kiln is provided with a first temperature zone, a second temperature zone and a third temperature zone which are sequentially arranged, electric heating pipes are arranged in the first temperature zone, the second temperature zone and the third temperature zone from the first temperature zone to the third temperature zone for heating products, the heating temperature of the product is gradually increased, the product is pushed into a first temperature zone, the first temperature zone is heated from the initial temperature to the heating temperature (the temperature of a second temperature zone is simultaneously raised) at the speed of 15 ℃/min, the heating temperature of the product in the first temperature zone is 200 ℃ finally, the length of the first temperature zone is 1080mm, and the first temperature zone stays in the heating temperature environment of the first temperature zone for 50 minutes; pushing the product into a second temperature zone, wherein the heating temperature of the second temperature zone is increased from the heating temperature of the first temperature zone to the heating temperature of the second temperature zone (the heating temperature of the third temperature zone is simultaneously increased) at the rate of 10 ℃/min, the heating temperature of the second temperature zone to the product is 340 ℃, the length of the second temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 30 min; pushing the product into a third temperature zone, wherein the heating temperature of the third temperature zone is increased from the heating temperature of the second temperature zone to the heating temperature of the third temperature zone at the speed of 5 ℃/min, the heating temperature of the third temperature zone to the product is 450 ℃, the length of the third temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 35 minutes; and then the product is continuously pushed to sinter.
The yield of the finally obtained product is 89%.
Example 5
According to the glue discharging process for high-temperature porcelain forming of the automobile ceramic functional part, the automobile ceramic functional part is formed by pressing 95-alumina powder and an adhesive, and the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid, putting the product into a bowl, sintering in a high-temperature kiln, the front part of the high-temperature kiln is provided with a first temperature zone, a second temperature zone and a third temperature zone which are sequentially arranged, electric heating pipes are arranged in the first temperature zone, the second temperature zone and the third temperature zone from the first temperature zone to the third temperature zone for heating products, the heating temperature of the product is gradually increased, the product is pushed into a first temperature zone, the first temperature zone is heated from the initial temperature to the heating temperature (the second temperature zone is heated simultaneously) at the speed of 15 ℃/minute, the heating temperature of the product in the first temperature zone is 210 ℃ finally, the length of the first temperature zone is 1080mm, and the first temperature zone stays in the heating temperature environment of the first temperature zone for 45 minutes; pushing the product into a second temperature zone, wherein the heating temperature of the second temperature zone is increased from the heating temperature of the first temperature zone to the heating temperature of the second temperature zone (the heating temperature of the third temperature zone is simultaneously increased) at the rate of 10 ℃/min, the heating temperature of the second temperature zone to the product is 280 ℃, the length of the first temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 50 min; pushing the product into a third temperature zone, wherein the heating temperature of the third temperature zone is increased from the heating temperature of the second temperature zone to the heating temperature of the third temperature zone at the speed of 5 ℃/min, the heating temperature of the third temperature zone to the product is 410 ℃, the length of the first temperature zone is 1620mm, and the product is retained in the environment of the heating temperature of the second temperature zone for 45 min; and then the product is continuously pushed to sinter.
The yield of the finally obtained product is 89%.
Comparative example 1
The binder provided by the invention is used for manufacturing a green body, a traditional silicon-molybdenum rod is used as a heating source, heating and glue discharging are carried out on the front part of a high-temperature kiln, the heating temperature of the silicon-molybdenum rod is 400 ℃, the heating is carried out for 60 minutes, and sintering with the same process is carried out after the glue discharging is finished.
The yield of the finally obtained product is 81%.
Comparative example 2
A blank is made of a commercially available binder (polyurethane mixture), the heating and binder removal method of example 3 is used for binder removal, and finally the same process is used for sintering.
The yield of the finally obtained product is 83 percent.
Comparative example 3
The method is characterized in that a commercially available binder (polyurethane mixture) is adopted to manufacture a blank, a traditional silicon-molybdenum rod is used as a heating source, heating and glue discharging are carried out on the front part of a high-temperature kiln, the heating temperature of the silicon-molybdenum rod is 400 ℃, heating is carried out for 60 minutes, and sintering with the same process is carried out after the glue discharging is finished.
The yield of the finally obtained product is 77%.
From the above, the product provided by the invention adopts the specific binder and the ceramic powder, the three-section temperature zones adaptive to the binder and the ceramic powder are adopted for heating, and the adaptive heating rate is adopted for each temperature zone, so that the binder can be effectively removed, the phenomenon that the porosity of the product is large due to too fast instant glue removal can be avoided, and the yield is improved to a certain extent.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should also be understood that various alterations, modifications and/or variations can be made to the present invention by those skilled in the art after reading the technical content of the present invention, and all such equivalents fall within the protective scope defined by the claims of the present application.
Claims (7)
1. The glue discharging process for high-temperature porcelain forming of the automobile ceramic functional part is characterized by comprising the following steps of: loading the product into a bowl, putting the product into a high-temperature kiln for sintering, arranging at least three temperature zones at the front part of the high-temperature kiln, allowing the product to stay in each temperature zone for a certain time and then propelling the product to the next temperature zone, wherein the temperature zones are provided with heating mechanisms for heating the product in a stepped manner;
the product is formed by pressing 95 alumina powder and an adhesive;
the adhesive is prepared from the following components in parts by weight: 2 parts of carnauba wax, 1 part of stearic acid, 10 parts of polypropylene, 13 parts of polyethylene, 10 parts of polystyrene, 7 parts of methyl ethyl ketone, 2 parts of vegetable oil and 5 parts of butyl stearic acid;
the front part of the high-temperature kiln is provided with a first temperature zone, a second temperature zone and a third temperature zone which are sequentially arranged, and the heating temperature of the product is gradually increased from the first temperature zone to the third temperature zone; the first temperature zone heats the product at 200-240 ℃, the second temperature zone heats the product at 250-340 ℃, and the third temperature zone heats the product at 350-500 ℃; the first temperature zone is increased from the initial temperature to the heating temperature at a rate of 15 ℃/min, the second temperature zone is increased from the heating temperature of the first temperature zone to the heating temperature of the second temperature zone at a rate of 10 ℃/min, and the third temperature zone is increased from the heating temperature of the second temperature zone to the heating temperature of the third temperature zone at a rate of 5 ℃/min.
2. The glue removing process for high-temperature porcelain forming of the ceramic functional part of the automobile according to claim 1, characterized in that: the length of the first temperature zone is 1080 mm.
3. The glue removing process for high-temperature porcelain forming of the ceramic functional part of the automobile according to claim 1, characterized in that: the length of the second temperature zone is 1620 mm.
4. The glue removing process for high-temperature porcelain forming of the ceramic functional part of the automobile according to claim 1, characterized in that: the length of the third temperature zone is 1620 mm.
5. The glue removing process for high-temperature porcelain forming of ceramic functional parts of automobiles as claimed in any one of claims 2 to 4, wherein: the product is retained in each warm zone for a period of 30 to 50 minutes.
6. The glue removing process for high-temperature porcelain forming of the ceramic functional part of the automobile according to claim 1, characterized in that: the heating mechanism arranged in the temperature zone adopts an electric heating pipe.
7. The automobile ceramic functional part is obtained by adopting the glue discharging process as claimed in claim 1 to realize high-temperature porcelain forming.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811192386.5A CN109020562B (en) | 2018-10-13 | 2018-10-13 | Glue discharging process for high-temperature porcelain forming of automobile ceramic functional part |
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| CN201811192386.5A CN109020562B (en) | 2018-10-13 | 2018-10-13 | Glue discharging process for high-temperature porcelain forming of automobile ceramic functional part |
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| CN109020562A CN109020562A (en) | 2018-12-18 |
| CN109020562B true CN109020562B (en) | 2020-07-21 |
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| CN201811192386.5A Active CN109020562B (en) | 2018-10-13 | 2018-10-13 | Glue discharging process for high-temperature porcelain forming of automobile ceramic functional part |
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| WO2014191304A1 (en) * | 2013-05-28 | 2014-12-04 | Comadur S.A. | Binder for injection-moulding composition |
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| CN101005003A (en) * | 2006-12-29 | 2007-07-25 | 深圳市爱尔创科技有限公司 | Semi-transparent ceramic arc tube and its producing method |
| CN101279851A (en) * | 2007-04-05 | 2008-10-08 | 雅菁 | Heat plastic adhensive system suitable for alumina ceramic injection molding |
| CN101643360A (en) * | 2009-09-02 | 2010-02-10 | 清华大学 | Method for manufacturing dentate special-shaped ceramic components by injection molding |
| CN102060547A (en) * | 2010-11-24 | 2011-05-18 | 中国振华集团红云器材厂 | Method for one-time sintering of piezoelectric ceramic |
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Denomination of invention: A kind of degumming process for high-temperature porcelain-forming of automotive ceramic functional parts Effective date of registration: 20220824 Granted publication date: 20200721 Pledgee: China Construction Bank Co.,Ltd. Loudi branch Pledgor: LOUDI ANTAEUS ELECTRONIC CERAMICS Co.,Ltd. Registration number: Y2022430000074 |
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