CN1789200A - Materials prescription for producing graphite electrode nipple bolt - Google Patents
Materials prescription for producing graphite electrode nipple bolt Download PDFInfo
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- CN1789200A CN1789200A CN 200410093915 CN200410093915A CN1789200A CN 1789200 A CN1789200 A CN 1789200A CN 200410093915 CN200410093915 CN 200410093915 CN 200410093915 A CN200410093915 A CN 200410093915A CN 1789200 A CN1789200 A CN 1789200A
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- graphite electrode
- raw materials
- joint bolt
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Abstract
The invention provides the formula of raw material for making carbon graphite electrode contact plug, which comprises the following constituents (by weight proportions): coal tar 50-70 parts, using incineration pulverized coke 10-30 parts, graphite powder 10-20 parts, and foaming agent 1.5-2.5 parts.
Description
Affiliated field:
The present invention relates to a kind of raw material that is used for being produced on the graphite electrode nipple bolt that Electric furnace steel making uses.
Background technology:
When Graphite Electrodes uses in Electric furnace steel making and since vibration such as the electric arc impact that produces in when steel-making, thermal shocking, mechanical shock and misoperation tend to produce electrode loosening, thread off, even the phenomenon of fracture has a strong impact on Electric furnace steel making.Though advantages such as conical joint has contact area big, and is easy to operate, and stressing conditions is good are compared with the linear pattern joint, if loosening and dropout in use takes place, it causes whole possibility that comes off bigger.At present, prevent that the loosening method of electrode contact from mainly containing: joint bolt, joint cream, joint powder, nipple pin etc.Its center tap bolt is a kind of method preferably.The ordinary couplings bolt is made raw material usually based on after-smithing petroleum coke and potassium permanganate, and the joint bolt that this kind raw material is made influences the joint conductive and heat-conductive easily.
Summary of the invention:
Purpose of the present invention just is to overcome above-mentioned the deficiencies in the prior art, and a kind of proportioning raw materials that is used for being produced on the graphite electrode nipple bolt that Electric furnace steel making uses is provided.It is loosening that the joint bolt that utilizes this prescription to produce can prevent that the Graphite Electrodes junction from taking place, and the phenomenon of threading off or rupturing is guaranteed the graphite electrode nipple close-coupled, reduces consumption of electrode and power consumption.
Technical scheme of the present invention is: a kind of being used to made new carbon graphite electrode joint bolt composition of raw materials, and it is characterized in that: it is made by following materials of weight proportions: coal-tar pitch 50-70 part, forge back coke powder 10-30 part, Graphite Powder 99 10-20 part whipping agent 1.5-2.5 part.
65 parts of described coal-tar pitch, forge 20 parts of the coke powders in back, 2 parts of 13 parts of whipping agents of Graphite Powder 99.
Described granularity requirements of forging the back coke powder below 200 mesh sieves, purity is 100%, its technical indicator is as follows: ash≤0.4%, sulfur≤0.4%, moisture content≤0.05%, true specific gravity 〉=2.10g/cm
3, carbon content 〉=98.5%.
The granularity requirements of described Graphite Powder 99 below 200 mesh sieves, purity is 100%, its technical indicator is as follows: ash≤0.3%, sulfur≤0.04%, moisture content≤0.05%, true specific gravity 〉=2.18g/cm
3, carbon content 〉=99%.
Described coal-tar pitch technical indicator is as follows: softening temperature 100-115 ℃, the stupid insolubles 28-35% of first, quinoline insolubles 8-14%, ash＜0.3%, moisture content＜5%, β resin＞18%, coking value＞53%.
Described whipping agent is selected vulkacit H for use.
Advantage of the present invention is: the carbon graphite electrode joint bolt of making of the present invention can prevent that the Graphite Electrodes junction from taking place to become flexible, and the phenomenon of threading off or rupturing is guaranteed the graphite electrode nipple close-coupled, reduces consumption of electrode and power consumption.
Embodiment:
To forge back coke powder and Graphite Powder 99 and carry out 200 mesh sieve sortings respectively, get following standby of 200 orders.Calculate with every weight part 1 gram, get granularity and be that 200 orders are following, purity be 100% forge back coke powder 20 grams, its technical indicator is as follows: ash≤0.4%, sulfur≤0.4%, moisture content≤0.05%, true specific gravity 〉=2.10g/cm
3, carbon content 〉=98.5%; Get granularity and be that 200 orders are following, purity is 100% Graphite Powder 99 13 grams, its technical indicator is as follows: ash≤0.3%, sulfur≤0.04%, moisture content≤0.05%, true specific gravity 〉=2.18g/cm
3, carbon content 〉=99%; Get coal-tar pitch 65 gram, its technical indicator is as follows: softening temperature 100-115 ℃, the stupid insolubles 28-35% of first, quinoline insolubles 8-14%, ash＜0.3%, moisture content＜5%, β resin＞18% coking value＞53%; Get whipping agent (vulkacit H) 2 grams.With coal-tar pitch, forge back coke powder, Graphite Powder 99 and whipping agent thorough mixing after, can obtain being used to make the raw material of new carbon graphite electrode joint bolt.
As follows with the carbon graphite electrode joint bolt (B) that the present invention makes with the effect comparison of the joint bolt (A) of traditional raw material making:
1, the physical and chemical index contrast is as follows:
| Project | V(％) | A(％) | W(％) | C(％) | dk(g/cm 3) | |
| Target value | ≤35 | ≤3.5 | ≤5 | ≥60 | ＞1.5 | |
| Actual value | A | 34.6 | 2.4 | 0.15 | 64.5 | 1.52 |
| B | 32.2 | 0.4 | 0.09 | 69.5 | 1.54 | |
Can find out that from These parameters B side's superior performance can reduce the influence of butt junction conductive and heat-conductive.
2, the expansion character contrast is as follows:
In loft drier, do two experiments of expansion temperature and ratio of expansion:
Can find out that from These parameters B can improve expansion character, and the back volume stability that expands.
Claims (6)
1, a kind of composition of raw materials that is used to make new carbon graphite electrode joint bolt, it is characterized in that: it is made by following materials of weight proportions: coal-tar pitch 50-70 part, forge back coke powder 10-30 part, Graphite Powder 99 10-20 part whipping agent 1.5-2.5 part.
2, the composition of raw materials that is used to make new carbon graphite electrode joint bolt according to claim 1 is characterized in that: 65 parts of described coal-tar pitch, forge 20 parts of the coke powders in back, 2 parts of 13 parts of whipping agents of Graphite Powder 99.
3, the composition of raw materials that is used to make new carbon graphite electrode joint bolt according to claim 1, it is characterized in that: described granularity requirements of forging the back coke powder below 200 mesh sieves, purity is 100%, its technical indicator is as follows: ash≤0.4%, sulfur≤0.4%, moisture content≤0.05%, true specific gravity 〉=2.10g/cm
3, carbon content 〉=98.5%.
4, the composition of raw materials that is used to make new carbon graphite electrode joint bolt according to claim 1, it is characterized in that: the granularity requirements of described Graphite Powder 99 below 200 mesh sieves, purity is 100%, its technical indicator is as follows: ash≤0.3%, sulfur≤0.04%, moisture content≤0.05%, true specific gravity 〉=2.18g/cm
3, carbon content 〉=99%.
5, the composition of raw materials that is used to make new carbon graphite electrode joint bolt according to claim 1, it is characterized in that: described coal-tar pitch technical indicator is as follows: softening temperature 100-115 ℃, the stupid insolubles 28-35% of first, quinoline insolubles 8-14%, ash＜0.3%, moisture content＜5%, β resin＞18%, coking value＞53%.
6, the composition of raw materials that is used to make new carbon graphite electrode joint bolt according to claim 1, it is characterized in that: described whipping agent is selected vulkacit H for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093915 CN1789200B (en) | 2004-12-13 | 2004-12-13 | Bolt for producing graphite electrode nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093915 CN1789200B (en) | 2004-12-13 | 2004-12-13 | Bolt for producing graphite electrode nipple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789200A true CN1789200A (en) | 2006-06-21 |
| CN1789200B CN1789200B (en) | 2010-11-24 |
Family
ID=36787353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410093915 Expired - Fee Related CN1789200B (en) | 2004-12-13 | 2004-12-13 | Bolt for producing graphite electrode nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1789200B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788101A (en) * | 2015-03-28 | 2015-07-22 | 吉林炭素有限公司 | Nipple pin material for graphite electrode and preparation method of nipple pin material |
| CN106087033A (en) * | 2016-06-24 | 2016-11-09 | 苏州华冲精密机械有限公司 | Novel graphite resistor rod for aluminum foil corrosion of capacitor |
| CN107140984A (en) * | 2017-05-11 | 2017-09-08 | 吉林科工碳业有限公司 | The manufacture method of disposal molding graphite crucible |
| CN110769539A (en) * | 2019-10-28 | 2020-02-07 | 焦作市中州炭素有限责任公司 | Graphite electrode joint bolt and preparation method thereof |
| CN111635735A (en) * | 2020-06-16 | 2020-09-08 | 郑州星创炉料有限公司 | High-temperature adhesive and method for connecting graphite electrode by using same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1007118B (en) * | 1987-11-12 | 1990-03-07 | 李德寿 | Graphite electrode nipple high temperature fixative |
| CN1141008C (en) * | 2000-11-10 | 2004-03-03 | 孙天福 | Technology and mould for forming large-size hollow graphite electrode |
| JP4267885B2 (en) * | 2002-10-02 | 2009-05-27 | 関西熱化学株式会社 | Negative electrode material for lithium ion secondary battery, method for producing the same, negative electrode using the negative electrode material, and lithium ion secondary battery |
-
2004
- 2004-12-13 CN CN 200410093915 patent/CN1789200B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788101A (en) * | 2015-03-28 | 2015-07-22 | 吉林炭素有限公司 | Nipple pin material for graphite electrode and preparation method of nipple pin material |
| CN106087033A (en) * | 2016-06-24 | 2016-11-09 | 苏州华冲精密机械有限公司 | Novel graphite resistor rod for aluminum foil corrosion of capacitor |
| CN107140984A (en) * | 2017-05-11 | 2017-09-08 | 吉林科工碳业有限公司 | The manufacture method of disposal molding graphite crucible |
| CN110769539A (en) * | 2019-10-28 | 2020-02-07 | 焦作市中州炭素有限责任公司 | Graphite electrode joint bolt and preparation method thereof |
| CN111635735A (en) * | 2020-06-16 | 2020-09-08 | 郑州星创炉料有限公司 | High-temperature adhesive and method for connecting graphite electrode by using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1789200B (en) | 2010-11-24 |
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Granted publication date: 20101124 Termination date: 20121213 |