CN1056483A - The hot spraying method for treatment of Graphite Electrodes - Google Patents
The hot spraying method for treatment of Graphite Electrodes Download PDFInfo
- Publication number
- CN1056483A CN1056483A CN91103497A CN91103497A CN1056483A CN 1056483 A CN1056483 A CN 1056483A CN 91103497 A CN91103497 A CN 91103497A CN 91103497 A CN91103497 A CN 91103497A CN 1056483 A CN1056483 A CN 1056483A
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- electrode
- treatment
- graphite electrodes
- spraying method
- hot spraying
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- Coating By Spraying Or Casting (AREA)
Abstract
The present invention relates to a kind of hot spraying method for treatment of electric furnace graphite electrode.Graphite Electrodes is after pre-treatment; use the oxy-acetylene flame spray gun that metal composite (nickel alclad) is sprayed to electrode surface; form the uniform protection layer of a densification, thereby improve the oxidation-resistance and the electroconductibility of Graphite Electrodes, reduce the consumed electrode in the Electric furnace steel making production.The present invention has that technology is flexible, easy to operate, adaptability by force, is not subjected to characteristics such as workyard restriction.
Description
The invention belongs to the surface coating technique field.
In the production of Electric furnace steel making, required electrode not only consumption is big, and electrode costs an arm and a leg the cost of increase steel.In order to reduce consumption of electrode, improve electrode life, commonly used at present both at home and abroad have following two kinds of methods: 1. soak electrode, after being about to electrode soaking certain hour in phosphoric acid salt, after heat treatment use, can make consumption of electrode reduction about 20%; 2. coated electrode is about to electrode compound and is sprayed onto protective layer of formation on the electrode.All adopt one or more metal oxides and nonmetallic compound to form coated material at present both at home and abroad, with pressurized air coating is sprayed onto with spray gun and forms protective layer on the electrode.But this kind method needs at the enterprising line operate of electrode shelf, and the electrode retained part can't spray.Adopt above two kinds of methods to handle electrode, though all exist processing rear electrode oxidation-resistance good, the shortcoming of poorly conductive, and complex process, the labour intensity height is limited by the place, and is poor for applicability.
The objective of the invention is to provide a kind of oxidation-resistance that not only can improve electrode, and can improve the electroconductibility of electrode, and can reduce the spraying technology of consumption of electrode.
The objective of the invention is to realize, metal composite (nickel alclad) is heated to melted state, spray to electrode surface with certain speed, form the uniform protection layer of a densification by means of oxygen flow with oxy-acetylene flame with following mode.
The present invention is described in further detail below in conjunction with concrete technical process.
Pre-treatment: with cotton yarn electrode surface is cleaned out before the spraying.
Preheating: heat with the flame spray gun counter electrode, preheating temperature is 200～250 ℃.
Thermospray: after using SPH-E200, BPT-1 type flame spray gun that metal composite (nickel alclad) is heated to melted state, spray to electrode surface.Coat-thickness is 0.1～1mm, and coating is insecure when too thick, and the cost height, and is inoperative when too thin.
Spraying back slow cooling: adopt the natural air cooling mode that electrode is slowly cooled off behind the electrode coating.
The coated electrode that adopts this processing method to make, not only good in oxidation resistance, and electroconductibility strengthens.Characteristics such as it is easy, flexible that the present invention has technology, easy to operate, and adaptability is strong, but counter electrode carries out comprehensive spraying, not limited by the place.
The electrode warp that adopts processing method of the present invention to handle is used on 5 tons of electric furnaces, makes consumed electrode be reduced to 3.7 kilograms of/ton steel by handling preceding 7 kilograms of/ton steel, has obviously reduced consumption of electrode, and electric power consumption per ton steel also reduces by 34 degree simultaneously, has tangible economic benefit.
Claims (2)
1, a kind of hot spraying method for treatment of Graphite Electrodes is characterized in that with the oxy-acetylene flame spray gun metal composite being heated to melted state, be ejected into graphite electrode surface form a densification, uniform protection layer, coat-thickness is 0.1～1mm.
2, the hot spraying method for treatment of Graphite Electrodes according to claim 1 is characterized in that metal composite is the nickel alclad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91103497A CN1056483A (en) | 1991-05-24 | 1991-05-24 | The hot spraying method for treatment of Graphite Electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91103497A CN1056483A (en) | 1991-05-24 | 1991-05-24 | The hot spraying method for treatment of Graphite Electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1056483A true CN1056483A (en) | 1991-11-27 |
Family
ID=4906121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91103497A Pending CN1056483A (en) | 1991-05-24 | 1991-05-24 | The hot spraying method for treatment of Graphite Electrodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056483A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173877A (en) * | 2011-01-28 | 2011-09-07 | 南京理工大学 | Method for enhancing oxidation resistant property of graphite electrode by using flame spraying |
| CN105958005A (en) * | 2016-06-24 | 2016-09-21 | 苏州华冲精密机械有限公司 | Electrode for saving energy and reducing consumption |
| CN112063798A (en) * | 2020-09-16 | 2020-12-11 | 攀钢集团研究院有限公司 | Method for reducing electrode consumption of electric furnace |
| CN113788710A (en) * | 2021-09-27 | 2021-12-14 | 厦门佰事兴新材料科技有限公司 | Graphite electrode and preparation method thereof |
| RU2772342C1 (en) * | 2021-09-10 | 2022-05-18 | Общество с ограниченной ответственностью "ВВСТ" | Method for depositing a heat-resistant coating based on iron aluminide on the surface of products operating in conditions of high-temperature gas corrosion |
-
1991
- 1991-05-24 CN CN91103497A patent/CN1056483A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173877A (en) * | 2011-01-28 | 2011-09-07 | 南京理工大学 | Method for enhancing oxidation resistant property of graphite electrode by using flame spraying |
| CN105958005A (en) * | 2016-06-24 | 2016-09-21 | 苏州华冲精密机械有限公司 | Electrode for saving energy and reducing consumption |
| CN112063798A (en) * | 2020-09-16 | 2020-12-11 | 攀钢集团研究院有限公司 | Method for reducing electrode consumption of electric furnace |
| CN112063798B (en) * | 2020-09-16 | 2022-03-22 | 攀钢集团研究院有限公司 | Method for reducing electrode consumption of electric furnace |
| RU2772342C1 (en) * | 2021-09-10 | 2022-05-18 | Общество с ограниченной ответственностью "ВВСТ" | Method for depositing a heat-resistant coating based on iron aluminide on the surface of products operating in conditions of high-temperature gas corrosion |
| CN113788710A (en) * | 2021-09-27 | 2021-12-14 | 厦门佰事兴新材料科技有限公司 | Graphite electrode and preparation method thereof |
| RU2805543C1 (en) * | 2023-03-16 | 2023-10-18 | Общество с ограниченной ответственностью "ВВСТ" | Graphited electrode with iron aluminide coating and high heat resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |