CN105674753A - Preparation method for graphite sandwich composite silicon carbide burning bearing plate - Google Patents

Preparation method for graphite sandwich composite silicon carbide burning bearing plate Download PDF

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Publication number
CN105674753A
CN105674753A CN201610034066.1A CN201610034066A CN105674753A CN 105674753 A CN105674753 A CN 105674753A CN 201610034066 A CN201610034066 A CN 201610034066A CN 105674753 A CN105674753 A CN 105674753A
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Prior art keywords
graphite
sandwich
silicon carbide
preparation
load bearing
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CN201610034066.1A
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Chinese (zh)
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CN105674753B (en
Inventor
石志民
许步峰
刘克志
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SHANDONG SHENGCHUAN CERAMICS CO Ltd
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SHANDONG SHENGCHUAN CERAMICS CO Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • 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
    • C04B35/62222—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic coatings
    • 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
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/001—Joining burned ceramic articles with other burned ceramic articles or other articles by heating directly with other burned ceramic articles
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/94—Products characterised by their shape
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/365—Silicon carbide

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a preparation method for a graphite sandwich composite silicon carbide burning bearing plate. A blank is extruded through pug and is a thin blank with the width equal to that of a sandwich graphite plate, then the two faces of the sandwich graphite plate are each sprayed with a layer of bonding mud, and the thin blank is smoothly bonded to the sandwich graphite plate; and then deburring, drying and vacuum sintering are carried out. The graphite sandwich composite silicon carbide burning bearing plate prepared from the method is small in volume density, high in high temperature bending strength, high in heat conductivity, good in thermal shock resistance, resistant to abrasion and suitable for reducing atmosphere; and meanwhile, the low density characteristic is achieved, the density of the burning bearing plate is further reduced, and the density is smaller than or equal to 2.7 g/cm<3>. In addition, sandwich graphite and silicon carbide can be tightly combined into a whole, and the service life is long.

Description

The preparation method of the sandwich complex silicon carbide load bearing board of graphite
Technical field
The invention belongs to technical field of inorganic material, the preparation method relating to the sandwich complex silicon carbide load bearing board of a kind of graphite.
Background technology
High-temperature flame-proof load bearing board is widely used in ceramic industry as a kind of kiln furnitures. At present, it is common to use the material of load bearing board mainly have following several: a beautiful gem cordierite mullite, corundum mullite rock, silicon carbide. A beautiful gem cordierite mullite is not suitable for reducing atmosphere, and corundum mullite rock high temperature break resistant intensity is not high, uses temperature less than 1450 DEG C. Silicon carbide load bearing board has oxide combination, silicon nitride bonded silicon, reaction-sintered etc. several, has thermal conductivity height, good thermal shock, wear-resistant, high temperature break resistant intensity advantages of higher, and is suitable for reducing atmosphere. Therefore, silicon carbide load bearing board is most promising, but its density ratio a beautiful gem cordierite mullite, corundum mullite rock are all high, and heat is big, energy consumption is high to use absorption as kiln furnitures. The sandwich complex silicon carbide load bearing board of graphite is contemplated to give full play to the advantage of silicon carbide load bearing board, and overcomes the shortcoming that its bulk density is high and the novel kiln furnitures product of one developed.
Summary of the invention
The preparation method that it is an object of the invention to provide the sandwich complex silicon carbide load bearing board of a kind of graphite, adopts the load bearing board that the method manufactures, and bulk density is little, and high temperature break resistant intensity is high. Not only have the thermal conductivity height of carborundum, good thermal shock, wear-resistant, be suitable for the advantage of reducing atmosphere, also have the low-density characteristic of graphite simultaneously concurrently, reduce further the density (≤2.7g/cm of load bearing board3). And sandwich graphite can be combined into as a whole closely with carborundum, long service life.
The preparation method of the sandwich complex silicon carbide load bearing board of graphite of the present invention, pug is extruded base substrate, base substrate is the thin stock that the width of width and sandwich graphite cake is equal, again at two face spray bonding mud of last layer of sandwich graphite cake, thin stock is entirely bonded on sandwich graphite cake, then, deburring, drying, vacuum-sintering.
Adopt extrusion bonding forming method.
The moisture content of pug controls at 11%-13%, and the moisture content of bonding mud controls at 24%-26%.
The thickness of pug extrusion thin stock is 5mm, and the thickness of bonding mud is 0.15 0.3mm.
The sandwich complex silicon carbide load bearing board of graphite is three layers compound, and intermediate layer is graphite material, and outside two-layer is sintered silicon carbon material.
The vacuum of vacuum-sintering is between 80 150Pa, and sintering temperature is 1,650 1750 DEG C.
The present invention utilizes graphite at high temperature siliconising can generate the principle of new carborundum, by graphite together with silicon carbide green body in vacuum drying oven reaction-sintered, generate new carborundum and sandwich graphite linings and silicon carbide layer be combined into as a whole closely.
The present invention compared with prior art, has the advantages that
The sandwich complex silicon carbide load bearing board of graphite prepared by the present invention, has thermal conductivity height, good thermal shock, wear-resistant, is suitable for reducing atmosphere, also has low-density characteristic simultaneously concurrently, reduce further the density of load bearing board, density≤2.7g/cm3. And sandwich graphite can be combined into as a whole closely with carborundum, long service life.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Pug used and bonding mud are conventional material, and main constituent is carborundum.
First prepare extrusion pug 100kg, bonding mud 10kg, be ready to be of a size of the sandwich graphite cake of 385mm*385mm*8mm. Then extrude thickness 5mm, the thin stock of width 385mm with extruder, then at two mud thick for face spray last layer 0.2mm of sandwich graphite cake, thin stock is entirely bonded on sandwich graphite cake, deburring, drying, 1700 DEG C of vacuum reaction sinterings.
The moisture Control of pug is 12%, and the moisture Control of bonding mud is 24%.
The bulk density burning goods is 2.63g/cm3, strength at normal temperature is 120MPa.
Embodiment 2
Pug used and bonding mud are conventional material, and main constituent is carborundum.
First prepare extrusion pug 100kg, bonding mud 10kg, be ready to be of a size of the sandwich graphite cake of 480mm*400mm*5mm. Then extrude thickness 5mm, the thin stock of width 400mm with extruder, then at two mud thick for face spray last layer 0.2mm of sandwich graphite cake, thin stock is entirely bonded on sandwich graphite cake, deburring, drying, 1650 DEG C of vacuum reaction sinterings.
The moisture Control of pug is 13%, and the moisture Control of bonding mud is 25%.
The bulk density burning goods is 2.65g/cm3, strength at normal temperature is 110MPa.
Embodiment 3
Pug used and bonding mud are conventional material, and main constituent is carborundum.
First prepare extrusion pug 100kg, bonding mud 10kg, be ready to be of a size of the sandwich graphite cake of 300mm*400mm*6mm. Then extrude thickness 5mm, the thin stock of width 300mm with extruder, then at two mud thick for face spray last layer 0.2mm of sandwich graphite cake, thin stock is entirely bonded on sandwich graphite cake, deburring, drying, 1750 DEG C of vacuum reaction sinterings.
The moisture Control of pug is 11%, and the moisture Control of bonding mud is 26%.
The bulk density burning goods is 2.64g/cm3, strength at normal temperature is 125MPa.

Claims (5)

1. the preparation method of the sandwich complex silicon carbide load bearing board of graphite, it is characterized in that, pug is extruded base substrate, base substrate is the thin stock that the width of width and sandwich graphite cake is equal, again at two face spray bonding mud of last layer of sandwich graphite cake, thin stock is entirely bonded on sandwich graphite cake, then, deburring, drying, vacuum-sintering.
2. the preparation method of the sandwich complex silicon carbide load bearing board of graphite according to claim 1, it is characterised in that the moisture content of pug controls at 11%-13%, and the moisture content of bonding mud controls at 24%-26%.
3. the preparation method of the sandwich complex silicon carbide load bearing board of graphite according to claim 1, it is characterised in that the thickness of pug extrusion thin stock is 5mm, and the thickness of bonding mud is 0.15-0.3mm.
4. the preparation method of the sandwich complex silicon carbide load bearing board of graphite according to claim 1, it is characterised in that the sandwich complex silicon carbide load bearing board of graphite is three layers compound, and intermediate layer is graphite material, and outside two-layer is sintered silicon carbon material.
5. the preparation method of the sandwich complex silicon carbide load bearing board of graphite according to claim 1, it is characterised in that the vacuum of vacuum-sintering is between 80-150Pa, and sintering temperature is 1650-1750 DEG C.
CN201610034066.1A 2016-01-19 2016-01-19 The preparation method of the sandwich complex silicon carbide load bearing board of graphite Active CN105674753B (en)

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CN105674753B CN105674753B (en) 2018-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115448722A (en) * 2022-11-10 2022-12-09 长沙中瓷新材料科技有限公司 Preparation method of large-structure graphite sagger
CN116496103A (en) * 2023-06-25 2023-07-28 成都超纯应用材料有限责任公司 High-strength low-density silicon carbide and preparation method and application thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2187291Y (en) * 1994-04-20 1995-01-11 夏吉夫 Concave graphite sintering boat
TW200305228A (en) * 2002-03-01 2003-10-16 Hitachi Int Electric Inc Heat treatment apparatus and a method for fabricating substrates
CN2599499Y (en) * 2003-01-27 2004-01-14 宜宾红星敏感电器有限公司 Composite zirconium oxide burning bearing board
CN1838841A (en) * 2005-12-19 2006-09-27 贵阳铝镁设计研究院 Composite high temperature electrical heating element and its making method
CN101121607A (en) * 2006-08-07 2008-02-13 张勇 Composite setter plate and preparation method thereof
CN103935084A (en) * 2014-05-08 2014-07-23 无锡顺佳特种陶瓷有限公司 Zirconia sandwich composite support burning plate and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2187291Y (en) * 1994-04-20 1995-01-11 夏吉夫 Concave graphite sintering boat
TW200305228A (en) * 2002-03-01 2003-10-16 Hitachi Int Electric Inc Heat treatment apparatus and a method for fabricating substrates
CN2599499Y (en) * 2003-01-27 2004-01-14 宜宾红星敏感电器有限公司 Composite zirconium oxide burning bearing board
CN1838841A (en) * 2005-12-19 2006-09-27 贵阳铝镁设计研究院 Composite high temperature electrical heating element and its making method
CN101121607A (en) * 2006-08-07 2008-02-13 张勇 Composite setter plate and preparation method thereof
CN103935084A (en) * 2014-05-08 2014-07-23 无锡顺佳特种陶瓷有限公司 Zirconia sandwich composite support burning plate and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115448722A (en) * 2022-11-10 2022-12-09 长沙中瓷新材料科技有限公司 Preparation method of large-structure graphite sagger
CN116496103A (en) * 2023-06-25 2023-07-28 成都超纯应用材料有限责任公司 High-strength low-density silicon carbide and preparation method and application thereof
CN116496103B (en) * 2023-06-25 2023-08-25 成都超纯应用材料有限责任公司 High-strength low-density silicon carbide and preparation method and application thereof

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