CN106986646A - A kind of oxidation-resistant graphite electrode - Google Patents
A kind of oxidation-resistant graphite electrode Download PDFInfo
- Publication number
- CN106986646A CN106986646A CN201710235966.7A CN201710235966A CN106986646A CN 106986646 A CN106986646 A CN 106986646A CN 201710235966 A CN201710235966 A CN 201710235966A CN 106986646 A CN106986646 A CN 106986646A
- Authority
- CN
- China
- Prior art keywords
- graphite electrode
- oxidation
- boron carbide
- raw material
- resistant graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- C04B35/515—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
- C04B35/52—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 carbon, e.g. graphite
- C04B35/522—Graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/06—Electrodes
- H05B7/08—Electrodes non-consumable
- H05B7/085—Electrodes non-consumable mainly consisting of carbon
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3821—Boron carbides
Abstract
In order to solve the problem of too fast oxidation makes the service life of graphite electrode substantially shorten, use cost is improved, the present invention provides a kind of oxidation-resistant graphite electrode, boron carbide is added in graphite electrode, using the stronger superior function of 2350 DEG C of boron carbide fusing point, inoxidizability, graphite electrode anit-oxidizing performance can be effectively lifted.
Description
Technical field
The present invention relates to graphite electrode field, especially a kind of oxidation-resistant graphite electrode.
Background technology
Graphite electrode be in electric arc furnaces with electrical arc discharge electric energy furnace charge is carried out heating the conductor of fusing, performance it is excellent
More, but in use because temperature is very high, graphite electrode oxidation rate quickly, too fast oxidation makes making for graphite electrode
Substantially shortened with the life-span, use cost is improved.
The content of the invention
In order to solve the problem of too fast oxidation makes the service life of graphite electrode substantially shorten, use cost is improved, this
Invention provides a kind of oxidation-resistant graphite electrode, and boron carbide is added in graphite electrode, utilizes 2350 DEG C of boron carbide fusing point, anti-oxidant
The stronger superior function of property, can effectively lift graphite electrode anit-oxidizing performance.
The technical solution adopted for the present invention to solve the technical problems is：A kind of oxidation-resistant graphite electrode, it makes raw material
Including petroleum coke, coal tar pitch, in addition to boron carbide, the quality of the boron carbide accounts for the 0.3% of raw material gross mass, by making
The calcining of raw material, crushing and screening, dispensing, kneading, die mould, roasting, graphitization, mechanical processing technique flow are made of the present invention
Oxidation-resistant graphite electrode.
The beneficial effects of the invention are as follows used by the reasonable addition of boron carbide, not only do not influence graphite electrode original
Intensity, moreover it is possible to effectively lift graphite electrode anit-oxidizing performance, makes the service life of graphite electrode extend 1.2-2 times, effectively reduction
The use cost of graphite electrode.
Embodiment
The principle and feature of the following examples present invention is described, and illustrated embodiment is served only for explaining the present invention, not
For limiting the scope of the present invention.
The concrete operation step of the embodiment of the present invention is as follows：
（1）Calcining：Real density will be fired in gross mass 500kg petroleum coke raw material calcining furnace not less than 2.07g/cm3, resistance
Rate is not more than 550 μ Ω .m；
（2）Crushing and screening：Petroleum coke raw material after 0.5kg boron carbides, 30kg coal tar pitch, calcining is crushed, and screening is
The granularity that difference is required；
（3）Dispensing：Take various granularity petroleum coke particles 74.7kg, coal tar pitch particle 25kg, the boron carbide particles 0.3kg sieved
Calculated, weighed and focused on, be used as kneading raw material；
（4）Kneading：At a certain temperature by above 74.7kg petroleum coke particles, 25kg coal tar pitch particle, 0.3kg boron carbide particles
It is uniformly mixed, is kneaded into plasticity thickener；
（5）Die mould：Above plasticity thickener is placed in extrusion equipment and is squeezed into shape, size, density and intensity and meets the requirements
Green compact；
（6）Roasting：Under inserts protection, above green compact are loaded in heating furnace and carry out high-temperature heat treatment, make the coal in green compact
Pitch is carbonized；
（7）Graphitization：Protected in high-temperature electric resistance furnace in medium and the green compact after baked above are heated to more than 2300 DEG C, make nothing
Setting Turbostratic charcoal changes into the graphite electrode early-products of three-dimensional order graphite crystalline structure；
（8）Machining：Size, shape required for above graphite electrode early-products are cut into, are made to meet and use
It is required that oxidation-resistant graphite electrode.
Claims (1)
1. a kind of oxidation-resistant graphite electrode, making raw material includes petroleum coke, coal tar pitch, it is characterised in that：The graphite electrode system
Making raw material also includes boron carbide, and the quality of the boron carbide, which is accounted for, makes the 0.3% of raw material gross mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235966.7A CN106986646A (en) | 2017-04-12 | 2017-04-12 | A kind of oxidation-resistant graphite electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235966.7A CN106986646A (en) | 2017-04-12 | 2017-04-12 | A kind of oxidation-resistant graphite electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106986646A true CN106986646A (en) | 2017-07-28 |
Family
ID=59415054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710235966.7A Pending CN106986646A (en) | 2017-04-12 | 2017-04-12 | A kind of oxidation-resistant graphite electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106986646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109456060A (en) * | 2018-11-23 | 2019-03-12 | 大同新成新材料股份有限公司 | A kind of oxidation-resistant graphite electrode and preparation method thereof with sound insulation noise-absorbing function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06285867A (en) * | 1992-05-06 | 1994-10-11 | Akechi Ceramics Kk | Material excellent in separation property |
| CN1810718A (en) * | 2005-01-28 | 2006-08-02 | 上海杉杉科技有限公司 | Production process of high performance and fine structure carbon material |
| CN101665365A (en) * | 2009-10-16 | 2010-03-10 | 攀钢冶金材料有限责任公司 | Refractory material of carbon protective sleeve and preparation method thereof |
| CN103011819A (en) * | 2012-12-27 | 2013-04-03 | 临邑县鲁北炭素有限公司 | Production technique of large-diameter graphite electrode |
-
2017
- 2017-04-12 CN CN201710235966.7A patent/CN106986646A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06285867A (en) * | 1992-05-06 | 1994-10-11 | Akechi Ceramics Kk | Material excellent in separation property |
| CN1810718A (en) * | 2005-01-28 | 2006-08-02 | 上海杉杉科技有限公司 | Production process of high performance and fine structure carbon material |
| CN101665365A (en) * | 2009-10-16 | 2010-03-10 | 攀钢冶金材料有限责任公司 | Refractory material of carbon protective sleeve and preparation method thereof |
| CN103011819A (en) * | 2012-12-27 | 2013-04-03 | 临邑县鲁北炭素有限公司 | Production technique of large-diameter graphite electrode |
Non-Patent Citations (2)
| Title |
|---|
| 范壮军等: "球磨时间对硼掺杂石墨材料抗氧化行为的影响", 《新型炭材料》 * |
| 黄伯云等: "《高性能炭/炭航空制动材料的制备技术》", 30 June 2007, 湖南科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109456060A (en) * | 2018-11-23 | 2019-03-12 | 大同新成新材料股份有限公司 | A kind of oxidation-resistant graphite electrode and preparation method thereof with sound insulation noise-absorbing function |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170728 |