CN110540412A - Al2O3-C sliding plate containing metal titanium and preparation method thereof - Google Patents

Al2O3-C sliding plate containing metal titanium and preparation method thereof Download PDF

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Publication number
CN110540412A
CN110540412A CN201910827297.1A CN201910827297A CN110540412A CN 110540412 A CN110540412 A CN 110540412A CN 201910827297 A CN201910827297 A CN 201910827297A CN 110540412 A CN110540412 A CN 110540412A
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China
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temperature
granularity
al2o3
raw materials
sliding plate
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CN201910827297.1A
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Chinese (zh)
Inventor
李勇
孙洋
李宏宇
薛文东
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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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
    • C04B35/10—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 aluminium oxide
    • 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
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63472—Condensation polymers of aldehydes or ketones
    • C04B35/63476—Phenol-formaldehyde condensation polymers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/404—Refractory metals
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/424—Carbon black
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • 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
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium

Abstract

The invention particularly relates to an Al2O3-C refractory material containing metal titanium and a preparation method thereof, belonging to the field of refractory materials. The sliding plate comprises, by weight, 82-95% of corundum, 1-15% of metallic titanium, 0-3% of carbon black or graphite, and phenolic resin as a binder, wherein the phenolic resin accounts for 2-6% of the total amount of the raw materials. During production, the raw materials are weighed according to the proportion, evenly mixed, mixed to obtain pug, then pressed and formed, and dried for 5-25h at the temperature of 120-600 ℃. The product has a metal-nonmetal combined structure, and has the apparent porosity of 3-10%, the volume density of 3.05-3.40g/cm3, the normal-temperature compressive strength of 100 MPa and the high-temperature rupture strength of 10-70 MPa. The product does not need to be fired and dipped in oil, and has the advantages of short production period and no environmental pollution; and has high normal temperature and high temperature strength, and good oxidation resistance, thermal shock resistance and erosion resistance.

Description

Al2O3-C sliding plate containing metal titanium and preparation method thereof
Technical Field
the invention belongs to the technical field of refractory materials. In particular to an Al2O3-C refractory material containing metal titanium and a preparation method thereof.
Background
at present, the mainstream products of the sliding plate in the iron and steel enterprise are aluminum carbon and aluminum zirconium carbon sliding plates, and the production process needs high-temperature firing and oil immersion procedures. The sliding plate has the problem of carbon oxidation in the using process, the carbon oxidation causes the loose structure of the sliding plate, so that oxides such as iron, manganese and the like permeate into a basal body of the sliding plate and react with alumina in the sliding plate to generate ferro-aluminum and manganese-aluminum spinels, and the reaction accelerates the oxidation of carbon.
The Hongzaghuo, etc. in the research of non-oxide composite refractory material, the theory of metal-plastic phase composite refractory material and the process for realizing said material, i.e. transition-plastic phase process, are proposed. A certain amount of metal is added into the rigid inorganic oxide, and the metal changes the rigid forming of the original material into plastic forming in the material forming process, so that the blank making density is improved, and the porosity is reduced; in the sintering process, the metal phase is liquefied or softened, the pores are filled, and the metal phase reacts with the material and the ambient atmosphere to generate a non-oxide reinforced phase, so that the high-temperature strength and the thermal shock stability of the material are improved.
Ti (C, N) is a non-oxide ceramic material with excellent performance and wide application, has the advantages of TiN and TiC, has the characteristics of high melting point, high hardness, wear resistance, oxidation resistance, corrosion resistance and the like, has good thermal conductivity, electrical conductivity and chemical stability, and has wide application in many fields of machinery, chemical engineering, automobile manufacturing, aerospace and the like. Iron-smelting workers prove that the use of the titanium-containing furnace charge is an effective means for protecting the hearth and the bottom of the furnace and prolonging the service life of the blast furnace through years of practice, and the reason is that titanium oxide is partially reduced in the iron-smelting process, so that a layer of slag crust mainly comprising TiC, TiN and Ti (C, N) is formed on the wall and the bottom of the blast furnace to play a good furnace protection role. It is thus demonstrated that Ti (C, N) can be an excellent non-oxide component in the refractory material.
Disclosure of Invention
The invention aims to prepare the unfired sliding plate which does not need high-temperature firing and oil immersion, and overcomes the defect that the existing sliding plate can not be stored for a long time due to the fact that the material contains a large amount of AlN and Al4C3, and further the industrial production of the product is very difficult; but also simplifies the production process and greatly reduces the production cost. Meanwhile, the material has the characteristics of high strength, good thermal shock stability, good erosion resistance, long service life and the like.
The technical scheme of the invention is as follows:
The raw materials comprise, by weight, 82-95% of corundum, 1-15% of metallic titanium, 0-3% of carbon black or graphite, and phenolic resin accounting for 2-6% of the total amount of the raw materials as a binding agent.
The corundum particle size range is as follows: the granularity is not less than 1mm and not more than 3mm, the granularity is not less than 0.1mm and not more than 1mm, the granularity is not less than 0.1mm, and the granularity of the carbon black or the graphite is as follows: the granularity is more than or equal to 0 and less than or equal to 0.1mm, and the granularity of the metal titanium is as follows: the granularity is more than or equal to 0 and less than or equal to 0.1 mm.
The forming method of the unfired Al2O 3-C-containing composite sliding plate refractory material comprises the steps of weighing various raw materials according to the proportion, uniformly mixing, mixing to obtain pug, then carrying out pressure forming, and drying at the temperature of 120-600 ℃ for 5-25 h.
The invention is based on the transition plasticity theory, and enables the metal titanium to play the role of a transition plasticity phase in the using process of the sliding plate, namely, part of the metal titanium is converted into non-oxide reinforced phases Ti (C, N) in situ in the temperature rising process of the sliding plate, and the rest metal titanium is used as the transition plasticity phase, so that the Al2O3-C sliding plate which has excellent performance and does not need to be sintered at high temperature and does not need to be subjected to an oil immersion process and does not contain the metal titanium is prepared.
Positive effects of the invention
1. The Al2O3-C composite sliding plate containing the metal titanium is prepared by using a transition plastic phase process, and the sliding plate does not generate Al4C3 and AlN which are easy to hydrate in the use process and has better hydration resistance.
2. The product of the invention does not need high-temperature firing and oil immersion procedures, thereby greatly reducing the production cost
3. The product obtained by the invention is a metal and nonmetal combined sliding plate, wherein the free titanium can reduce the porosity of the material and play a role of a plastic phase, and the toughness and the thermal shock stability of the material are improved.
4. As AlN and Al4C3 are not generated in the sliding plate, the sliding plate has good hydration resistance and is convenient to store for a long time.
5. the product of the invention can generate non-oxide reinforced phases Ti (C, N) in situ in the high-temperature use process, and improves the erosion resistance and high-temperature strength of the material.
6. The invention has excellent physical performance index. The apparent porosity is 3-10%, the volume density is 3.05-3.40g/cm3, the normal temperature compressive strength is 100-250MPa, and the high temperature rupture strength is 10-70 MPa.
Detailed Description
Example 1: a preparation method of an Al2O3-C composite sliding plate without burning metal titanium comprises the following raw materials in percentage by weight: 95 percent of corundum, 3 percent of metallic titanium, 2 percent of graphite and 3.5 percent of thermosetting phenolic resin. During production, weighing various raw materials according to the proportion, uniformly mixing, mixing to obtain pug, then pressing and molding by a friction brick press, and drying at the temperature of 120-; then the product of the invention is prepared by hooping, grinding and coating. The powder material is metal titanium powder with the granularity of less than 325 meshes and partial corundum, the aggregate is corundum with the granularity of 3-1mm and 1-0.1mm, and the corundum is plate-shaped corundum and white corundum respectively.
The performance indexes of the obtained product are as follows: 3.7 percent of apparent porosity, 3.35g/cm3 of volume density, 220MPa of normal-temperature compressive strength and 44MPa of high-temperature rupture strength, and has better thermal shock resistance, erosion resistance, oxidation resistance and hydration resistance.
Example 2: the production process was the same as in example 1, except that:
The raw materials comprise the following components in percentage by weight: 92% of corundum, 6% of metal titanium, 2% of graphite and 3.5% of thermosetting phenolic resin. The performance indexes of the obtained product are as follows: 3.9 percent of apparent porosity, 3.31g/cm3 of volume density, 194MPa of normal-temperature compressive strength and 49MPa of high-temperature rupture strength, and has better thermal shock resistance, erosion resistance, oxidation resistance and hydration resistance.
Example 3: the production process was the same as in example 1, except that:
The raw materials comprise the following components in percentage by weight: 89% of corundum, 9% of metal titanium, 2% of graphite and 3.5% of thermosetting phenolic resin. The performance indexes of the obtained product are as follows: the apparent porosity is 4.3 percent, the volume density is 3.27g/cm3, the normal-temperature compressive strength is 187MPa, the high-temperature rupture strength is 55MPa, and the thermal shock resistance, the erosion resistance, the oxidation resistance and the hydration resistance of the material are all good.
Example 4: the production process was the same as in example 1, except that:
the raw materials comprise the following components in percentage by weight: 86 percent of corundum, 12 percent of metallic titanium, 2 percent of graphite and 3.5 percent of thermosetting phenolic resin. The performance indexes of the obtained product are as follows: the apparent porosity is 4.9 percent, the volume density is 3.21g/cm3, the normal-temperature compressive strength is 179MPa, the high-temperature rupture strength is 44MPa, and the thermal shock resistance, the erosion resistance, the oxidation resistance and the hydration resistance of the material are all better.
example 5: the production process was the same as in example 1, except that:
The raw materials comprise the following components in percentage by weight: 83 percent of corundum, 15 percent of metallic titanium, 2 percent of graphite and 3.5 percent of thermosetting phenolic resin. The performance indexes of the obtained product are as follows: 5.9 percent of apparent porosity, 3.16g/cm3 of volume density, 163MPa of normal-temperature compressive strength and 41MPa of high-temperature rupture strength, and has better thermal shock resistance, erosion resistance, oxidation resistance and hydration resistance.

Claims (3)

1. An Al2O3-C composite skateboard containing metallic titanium, which is characterized in that: the raw materials comprise, by weight, 82-95% of corundum, 1-15% of metallic titanium, 0-3% of carbon black or graphite, and phenolic resin accounting for 2-6% of the total amount of the raw materials as a binding agent.
2. Al2O3-C slide plate containing metallic titanium according to claim 1, characterized in that: the corundum particle size range is as follows: the granularity is not less than 1mm and not more than 3mm, the granularity is not less than 0.1mm and not more than 1mm, the granularity is not less than 0.1mm, and the granularity of the carbon black or the graphite is as follows: the granularity is more than or equal to 0 and less than or equal to 0.1mm, and the granularity of the metal titanium is as follows: the granularity is more than or equal to 0 and less than or equal to 0.1 mm.
3. The method for preparing Al2O3-C alloy flakes according to claim 1 or 2, wherein: weighing the raw materials according to the proportion, uniformly mixing, mixing to obtain pug, then pressing and forming, drying at the temperature of 120 plus materials and 600 ℃ for 5-25h, and then hooping, grinding and coating to obtain the product of the invention.
CN201910827297.1A 2019-09-03 2019-09-03 Al2O3-C sliding plate containing metal titanium and preparation method thereof Pending CN110540412A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112647007A (en) * 2020-08-24 2021-04-13 河南熔金高温材料股份有限公司 Titanium-magnesia-alumina spinel-brown fused alumina composite sliding plate and production method thereof
CN115057692A (en) * 2022-06-08 2022-09-16 郑州海迈高温材料研究院有限公司 Aluminum-carbon sliding brick added with ferrotitanium alloy and production method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020130489A1 (en) * 2001-03-07 2002-09-19 Atakan Peker Amorphous alloy gliding boards
CN101429037A (en) * 2007-11-07 2009-05-13 鞍钢集团耐火材料公司 Aluminum-carbon sliding tile and method of producing the same
CN103464738A (en) * 2013-08-21 2013-12-25 卫辉熔金高温材料有限责任公司 Titanium-added metal combined sliding plate and production method thereof
CN104341161A (en) * 2013-07-30 2015-02-11 瑞泰科技股份有限公司 Nano-scale catalytic metal-ceramic bonding firing-free bitumen-impregnation-free environment-friendly slide plate and preparation method thereof
CN106001532A (en) * 2016-05-16 2016-10-12 辽宁科技大学 Corundum-zirconia corundum-titanic acid aluminum no-firing no-soaking sliding brick and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020130489A1 (en) * 2001-03-07 2002-09-19 Atakan Peker Amorphous alloy gliding boards
CN101429037A (en) * 2007-11-07 2009-05-13 鞍钢集团耐火材料公司 Aluminum-carbon sliding tile and method of producing the same
CN104341161A (en) * 2013-07-30 2015-02-11 瑞泰科技股份有限公司 Nano-scale catalytic metal-ceramic bonding firing-free bitumen-impregnation-free environment-friendly slide plate and preparation method thereof
CN103464738A (en) * 2013-08-21 2013-12-25 卫辉熔金高温材料有限责任公司 Titanium-added metal combined sliding plate and production method thereof
CN106001532A (en) * 2016-05-16 2016-10-12 辽宁科技大学 Corundum-zirconia corundum-titanic acid aluminum no-firing no-soaking sliding brick and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112647007A (en) * 2020-08-24 2021-04-13 河南熔金高温材料股份有限公司 Titanium-magnesia-alumina spinel-brown fused alumina composite sliding plate and production method thereof
CN115057692A (en) * 2022-06-08 2022-09-16 郑州海迈高温材料研究院有限公司 Aluminum-carbon sliding brick added with ferrotitanium alloy and production method thereof

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Application publication date: 20191206