CN102358701A - Preparation method of ceramic wiper plate - Google Patents
Preparation method of ceramic wiper plate Download PDFInfo
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- CN102358701A CN102358701A CN201110168175XA CN201110168175A CN102358701A CN 102358701 A CN102358701 A CN 102358701A CN 201110168175X A CN201110168175X A CN 201110168175XA CN 201110168175 A CN201110168175 A CN 201110168175A CN 102358701 A CN102358701 A CN 102358701A
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- wiper blade
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Abstract
The invention provides a preparation method of a ceramic wiper plate, and comprises the steps of ceramic pug material preparation, moulding, solidification, sintering, and polishing. The method is characterized by consisting of: mixing silicon carbide powder, graphite powder, carbon black, phenolic resin and liquid paraffin, and subjecting the mixture to mulling in a vacuum pug mill so as to prepare a ceramic plastic pug material, conducting extrusion moulding to the ceramic plastic pug material, and cutting the material into an extrusion moulding green body, then carrying out curing to prepare a ceramic wiper plate green body, and performing sintering and polishing, thus obtaining the ceramic wiper plate. The ceramic wiper plate prepared in the invention is used for the papermaking industry, and a single wiper plate is free of splicing seams. Characterized by high surface fineness, great hardness and high strength, the ceramic wiper plate prepared in the invention avoids the defect of uneven splicing seams in ordinary ceramic wiper plates. With high production efficiency, the preparation method of the invention can be used for continuous mass production.
Description
Technical field
The present invention relates to a kind of preparation method of ceramic Wiper blade, belong to the ceramics processing field.
Background technology
The main at present aluminum oxide injection forming technology that adopts of pottery Wiper blade is produced, and its shortcoming is that alumina material hardness is lower, and wear resistance is relatively poor; And the length of single-piece Wiper blade little (about 10 centimetres) complex production process; The splicing seams unfairness, production efficiency is low, manual operation; Floor space is big, and product performance are unstable.
Summary of the invention
The object of the present invention is to provide a kind of preparation method that can overcome above-mentioned defective, adopt the ceramic Wiper blade of extrusion moulding adaptation continuous mass production, excellent property.Its technical scheme is:
Comprising ceramic material preparation, moulding, solidify, burn till, polish, is d with granularity
50＜0.5 μ m silicon carbide powder, granularity are d
50＜0.5 μ m Graphite Powder 99, granularity are d
50＜0.5 μ m carbon black, resol and whiteruss are by weight being 30～80: 2～20: 3～20: 10～20: 5～10 uniform mixing are made of mixing the silicon carbide ceramics plastic mud material in vacuum deairing machine, with above-mentioned pug extrusion moulding, cut into the extrusion moulding base substrate; Being 50～90 ℃ in the curing system and solidifying and to process ceramic Wiper blade base substrate in 8～10 hours, is room temperature～100 ℃ at calcining system, 4～6 hours; 100～300 ℃, 10～16 hours, more than 300 ℃; 8～12 hours; 1500～2000 ℃ of firing temperatures, nitrogen atmosphere was fired in 2～4 hours, and ceramic Wiper blade is processed in polishing then.
The present invention compared with prior art, its advantage is:
1, the present invention is a plastic agent owing to having adopted resol; Blank strength after making ceramic Wiper blade base substrate solidify obtains bigger raising, can carry out biscuit processing, and physical dimension is accurate; Single-piece length can reach more than 2 meters; Compare length with the alumina-ceramic Wiper blade and improved 20 times, the complete no splicing seams of single-piece Wiper blade has been avoided the irregular defective of conventional ceramic Wiper blade splicing seams;
2, owing to form the porous carbon high-activity carbon after the resol carbonization and generate silit and make the uniform microstructure of ceramic Wiper blade with pasc reaction in the roasting material, intensity is high, and global reliability is high.
3, because the microvoid structure of the porous high-activity carbon that the resol carbonization forms has effectively stoped the immersion of silicon melt in the roasting material, the remaining silicon amount in the silicon carbide reaction-sintered goods is reduced significantly, improved silicon carbide reaction-sintered goods mechanical behavior under high temperature.
Description of drawings
Fig. 1 is the structural representation of ceramic Wiper blade.
Embodiment
Embodiment 1
1, the moulding of extrusion moulding base substrate
With granularity is that 0.3 μ m silicon carbide powder, granularity are that Graphite Powder 99, the granularity of 0.3 μ m is 0.5 μ m carbon black, resol and whiteruss by weight being 30: 20: 20: uniform mixing was made of mixing the silicon carbide ceramics plastic mud material in vacuum deairing machine in 20: 10; With above-mentioned pug extrusion moulding, cut into the extrusion moulding base substrate.
2, solidify:
The extrusion moulding base substrate, 90 ℃ of curing is processed ceramic Wiper blade base substrate after solidifying in 8 hours.
3, burn till:
Is room temperature～100 ℃ with the ceramic Wiper blade base substrate after solidifying at calcining system, 4 hours, and 100～300 ℃, 10 hours, more than 300 ℃, 8 hours, 1500 ℃ of firing temperatures, nitrogen atmosphere was fired in 4 hours, and ceramic Wiper blade is processed in polishing then.
The purity of testing used proportion material is technical pure.
The extrusion-formation of ceramic Wiper blade compressive strength that obtains is 260MPa..
Embodiment 2
1, the moulding of extrusion moulding base substrate
With granularity is that 0.1 μ m silicon carbide powder, granularity are that Graphite Powder 99, the granularity of 0.5 μ m is 0.3 μ m carbon black, resol and whiteruss by weight being 55: 11: 11: uniform mixing was made of mixing the silicon carbide ceramics plastic mud material in vacuum deairing machine in 15: 8; With above-mentioned pug extrusion moulding, cut into the extrusion moulding base substrate.
2, solidify:
The extrusion moulding base substrate, 70 ℃ of curing is processed ceramic Wiper blade base substrate after solidifying in 9 hours.
3, burn till:
Is room temperature～100 ℃ with the ceramic Wiper blade base substrate after solidifying at calcining system, 5 hours, and 100～300 ℃, 13 hours, more than 300 ℃, 10 hours, 1800 ℃ of firing temperatures, nitrogen atmosphere was fired in 3 hours, and ceramic Wiper blade is processed in polishing then.
The purity of testing used proportion material is technical pure.
The extrusion-formation of ceramic Wiper blade compressive strength that obtains is 280MPa..
Embodiment 3
1, the moulding of extrusion moulding base substrate
With granularity is that 0.5 μ m silicon carbide powder, granularity are that Graphite Powder 99, the granularity of 0.1 μ m is 0.1 μ m carbon black, resol and whiteruss by weight being 80: 2: 3: uniform mixing was made of mixing the silicon carbide ceramics plastic mud material in vacuum deairing machine in 10: 5; With above-mentioned pug extrusion moulding, cut into the extrusion moulding base substrate.
2, solidify:
The extrusion moulding base substrate, 50 ℃ of curing is processed ceramic Wiper blade base substrate after solidifying in 10 hours.
3, burn till:
Is room temperature～100 ℃ with the ceramic Wiper blade base substrate after solidifying at calcining system, 6 hours, and 100～300 ℃, 16 hours, more than 300 ℃, 12 hours, 2000 ℃ of firing temperatures, nitrogen atmosphere was fired in 2 hours, and ceramic Wiper blade is processed in polishing then.
The purity of testing used proportion material is technical pure.
The extrusion-formation of ceramic Wiper blade compressive strength that obtains is 240Mpa..
Claims (1)
1. the preparation method of a ceramic Wiper blade comprises ceramic material preparation, moulding, solidifies, burns till, polishes, and it is characterized in that: with granularity is d
50＜0.5 μ m silicon carbide powder, granularity are d
50＜0.5 μ m Graphite Powder 99, granularity are d
50＜0.5 μ m carbon black, resol and whiteruss are by weight being 30～80: 2～20: 3～20: 10～20: 5～10 uniform mixing are made of mixing the silicon carbide ceramics plastic mud material in vacuum deairing machine, with above-mentioned pug extrusion moulding, cut into the extrusion moulding base substrate; Being 50～90 ℃ in the curing system and doing admittedly and processed ceramic Wiper blade base substrate in 8～10 hours, is room temperature～100 ℃ at calcining system, 4～6 hours; 100～300 ℃, 10～16 hours, more than 300 ℃; 8～12 hours; 1500～2000 ℃ of firing temperatures, nitrogen atmosphere was fired in 2～4 hours, and ceramic Wiper blade is processed in polishing then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110168175 CN102358701B (en) | 2011-08-25 | 2011-08-25 | Preparation method of ceramic wiper plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110168175 CN102358701B (en) | 2011-08-25 | 2011-08-25 | Preparation method of ceramic wiper plate |
Publications (2)
| Publication Number | Publication Date |
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| CN102358701A true CN102358701A (en) | 2012-02-22 |
| CN102358701B CN102358701B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110168175 Expired - Fee Related CN102358701B (en) | 2011-08-25 | 2011-08-25 | Preparation method of ceramic wiper plate |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569741A (en) * | 2004-04-29 | 2005-01-26 | 西安交通大学 | Method for extrusion molding of thyrite at normal temperature with phenol-formaldehyde resin as binding agent |
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2011
- 2011-08-25 CN CN 201110168175 patent/CN102358701B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569741A (en) * | 2004-04-29 | 2005-01-26 | 西安交通大学 | Method for extrusion molding of thyrite at normal temperature with phenol-formaldehyde resin as binding agent |
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| CN102358701B (en) | 2013-02-13 |
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