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Method for determining dimensions of graphite electrode contact based on normal temperature processing and high temperature use

A graphite electrode and size technology, applied in electric heating devices, electrical components, heating by discharge, etc., can solve problems such as bursting, and achieve the effect of reducing loss, avoiding bursting, and achieving remarkable effect.

Inactive Publication Date: 2018-03-27
JILIN CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is that the graphite electrode body and the graphite electrode connector will swell and crack during use. The reason is that due to the connection requirements of the graphite electrode during use, the graphite electrode body and the graphite electrode connector are connected by threads, and the connecting part is a cone. The end of the graphite electrode body is cut out of the tapered joint hole. The processing of the graphite electrode body and its graphite electrode joint is carried out at room temperature, while the graphite electrode body and its graphite electrode joint are in a high-temperature heating state. Due to thermal expansion Under the normal temperature, the threaded connection between the graphite electrode body and the graphite electrode joint that meets the standard and is closely matched will burst when it is in use. Therefore, the processing of the graphite electrode body and its graphite electrode joint must be done at room temperature. Taking temperature into consideration

Method used

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  • Method for determining dimensions of graphite electrode contact based on normal temperature processing and high temperature use
  • Method for determining dimensions of graphite electrode contact based on normal temperature processing and high temperature use
  • Method for determining dimensions of graphite electrode contact based on normal temperature processing and high temperature use

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Embodiment 1

[0026] Embodiment 1, this embodiment is a method for determining the size of graphite electrode joints based on normal temperature processing and high temperature use, using the base hole system, and taking the diameter of the large end or the diameter of the small end or the length of the half end of the graphite electrode body as a benchmark Holes, with the diameter of the large end of the graphite electrode joint or the diameter of the small end or the length of the half head as the matching axis, the size of the graphite electrode body and graphite electrode joint for 400UHP ultra-high power is determined, and the diameter of the graphite electrode body is φ400.00 ㎜, graphite electrode connector hole diameter φ222.25㎜, half head length 177.80㎜, room temperature 0°C, high temperature 700°C, including the following steps: 1) Laboratory measurement of the linear thermal expansion coefficient of graphite electrode body and electrode joint, see Table 1;

[0027] Table 1 Linear ...

Embodiment 2

[0041] Embodiment 2, this embodiment is a method for determining the size of graphite electrode joints based on normal temperature processing and high temperature use. The base hole system is adopted, and the diameter of the large end or the diameter of the small end or the length of the half end of the graphite electrode body is used as a benchmark The diameter of the large end of the graphite electrode connector or the diameter of the small end or the length of the half head is used as the matching axis. The size of the graphite electrode body and the graphite electrode connector for 450UHP is determined. The diameter of the graphite electrode body is φ450.00㎜, and the graphite electrode body The diameter of the electrode joint hole is φ241.30㎜, the half-head length is 152.40㎜, the normal temperature is 0°C, and the high temperature is 700°C, including the following steps:

[0042] 1) The laboratory measures the linear thermal expansion coefficient of the graphite electrode b...

Embodiment 3

[0057] Embodiment 3, this embodiment is a method for determining the size of graphite electrode joints based on normal temperature processing and high temperature use. The base hole system is adopted, and the diameter of the large end or the diameter of the small end or the length of the half end of the graphite electrode body is used as a benchmark Holes, with the diameter of the large end of the graphite electrode joint or the diameter of the small end or the length of the half head as the matching axis, the size of the graphite electrode body and graphite electrode joint used for 600UHP is determined, the diameter of the graphite electrode body is φ600.00㎜, graphite The diameter of the electrode joint hole is φ317.5.00㎜, the half-head length is 228.60㎜, the normal temperature is 0°C, and the high temperature is 700°C. The processing is based on the joint hole of the graphite electrode body, including the following steps:

[0058] 1) The laboratory measures the linear thermal...

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Abstract

The invention relates to a method for determining dimensions of a graphite electrode contact based on normal temperature processing and high temperature use. The method is characterized by comprisingthe steps of: measuring thermal expansion coefficients of a graphite electrode body and the electrode contact in a laboratory; calculating large and small end diameter dimensions and a half contact length of the graphite electrode contact in a normal temperature status; and calculating taper of the graphite electrode contact in the normal temperature status. The method has the advantages of reasonable dimension determination, reliable connection and use, and significant effect.

Description

technical field [0001] The invention relates to the production of graphite electrode raw products, and is a method for determining the size of graphite electrode joints based on normal temperature processing and high temperature use. Background technique [0002] Graphite electrode is a conductive discharge product used in electric furnace smelting. Its principle is that current passes through the electrode to generate discharge phenomenon at the end of the electrode. The phenomenon is arc light. The arc light heats the scrap steel to melt the scrap steel. The graphite electrode is continuously connected during use, and the product connected to the graphite electrode is the graphite electrode joint, and the connected graphite electrode is called the graphite electrode body. The existing problem is that the graphite electrode body and the graphite electrode connector will swell and crack during use. The reason is that due to the connection requirements of the graphite electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B7/085
CPCH05B7/085
Inventor 关海涛
Owner JILIN CARBON
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