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A Soft Measurement Method for the Remaining Length of Electroslag Furnace Melting Electrode

A technology of remaining length and melting electrodes, which is applied in the direction of measuring devices, instruments, etc.

Inactive Publication Date: 2011-12-28
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research on the detection of the remaining length of the electrode is still at a blank level

Method used

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  • A Soft Measurement Method for the Remaining Length of Electroslag Furnace Melting Electrode
  • A Soft Measurement Method for the Remaining Length of Electroslag Furnace Melting Electrode
  • A Soft Measurement Method for the Remaining Length of Electroslag Furnace Melting Electrode

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Experimental program
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Embodiment Construction

[0049] The specific implementation of the device of the present invention will be described in detail below.

[0050] The present invention is specifically implemented by taking a three-phase six-electrode 120-ton electroslag furnace as a trial object. The cross arm of each phase clamps two electrodes, and the lifting of the electrodes is driven by a hydraulic cylinder, which is equipped with a position ruler to detect the stroke. A load cell is installed at the cross arm to measure the weight of the two electrodes. Since the circuit design can ensure that the melting length and speed of the two electrodes are equal, the two electrodes are regarded as one electrode. Each phase current is detected by a current transformer. The amount of slag added is weighed in advance and the volume is measured.

[0051] Record the initial weight of the load cell after clamping the electrode each time, then the electrode drops, arcing, and the current reaches the set value, and the initial ...

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Abstract

A soft measurement method for the remaining length of a melting electrode in an electroslag furnace is based on the complex force relationship of the electrode to obtain the soft measurement formula of the electrode length, and the soft measurement formula for the remaining length of the electrode is obtained according to the changing relationship of each position in the smelting process and the melting crystallization model. Due to the influence of interference factors and uncertain factors, a single weight prediction model or position prediction model is not accurate enough, so according to the multi-sensor measurement theory, the results of the two are fused, and a multi-sensor information fusion algorithm based on random weighted estimation is used. , which is used to solve the problem of optimal allocation of weights when multiple sensors measure the remaining length of electrodes. The invention belongs to the field of electroslag metallurgy, provides necessary conditions for the automatic electrode changing operation of a large electroslag furnace, can reduce waste of precious metal raw materials, reduce production cost and improve production efficiency. The method is characterized by safety, reliability, low cost and easy promotion.

Description

technical field [0001] The invention belongs to the field of electroslag metallurgy. In particular, a soft measurement method for the remaining length of the melting electrode based on a multi-sensor fusion model is provided, which provides necessary conditions for the automatic electrode replacement operation of large electroslag furnaces, reduces the waste of precious metal raw materials, reduces production costs, and improves production efficiency. Background technique [0002] Electroslag furnace is a kind of refining equipment widely used in the field of metallurgy. Electroslag remelting (Electroslag Remelting hereinafter referred to as ESR) steel ingots are widely used in various special Required occasions, such as machine manufacturing, gas turbine manufacturing, aerospace technology, nuclear power engineering, etc. [0003] The rapid development of electroslag metallurgy technology is mainly due to its advantages in the following aspects: [0004] Superiority in pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02
Inventor 贾明兴毛志忠刘喜海
Owner NORTHEASTERN UNIV
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