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Solid-state start method in T-shape crystallizer using bipolar series electroslag remelting

A technology of electroslag remelting and crystallizer, which is applied in the field of metal electroslag remelting, can solve the problems of complicated operation process and increased labor intensity of on-site operators, and achieve good effect and simple operation

Inactive Publication Date: 2008-02-13
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of liquid start-up requires another set of slag removal equipment, which increases the labor intensity of on-site operators and complicates the operation process.

Method used

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  • Solid-state start method in T-shape crystallizer using bipolar series electroslag remelting
  • Solid-state start method in T-shape crystallizer using bipolar series electroslag remelting
  • Solid-state start method in T-shape crystallizer using bipolar series electroslag remelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The device of the present invention: includes a T-shaped crystallizer: the upper part is 260mm round, the lower part is 90×90mm square, the slag volume is 18kg, the H value is 150mm, and both electrodes are 60×120mm in cross-section For the steel billet, the two slagging electrodes are 500mm and 650mm in length, a rectangle with a cross-sectional size of 20×60mm, conductive copper cable, power switch and arc-igniting agent. The arc-igniting agent 7 is built into the T-shaped mold 5. The slag electrode is welded to the lower end of the electrode, and the two electrodes are respectively connected to the AC power source 10. The drawing mechanism 9 under the mold 5 is connected to the AC power source 10 through a conductive copper cable, and a power switch 11 is provided on the conductive copper cable. T-shaped crystal A molten steel level detection device 6 is arranged outside the mold 5 for detecting the molten steel level signal in the mold 5.

[0019] The solid-s...

Embodiment 2

[0025] Example 2: The device of the present invention: includes a T-shaped crystallizer: the upper part is a rectangle of 280×240mm, the lower part is a square of 160×160mm, the amount of slag is 24kg, the H value is 100mm, and both electrodes are 160×80mm in section For steel billet, two slag electrodes are 300 and 420mm in length, a rectangle with a cross-sectional size of 30×120mm, conductive copper cable, power switch and arc starter. The arc starter 7 is built in the T-shaped mold 5. The slag electrode is welded to the lower end of the electrode, and the two electrodes are respectively connected to the AC power source 10. The drawing mechanism 9 under the mold 5 is connected to the AC power source 10 through a conductive copper cable, and a power switch 11 is provided on the conductive copper cable. T-shaped crystal A molten steel level detection device 6 is arranged outside the mold 5 for detecting the molten steel level signal in the mold 5.

[0026] The solid-state startup...

Embodiment 3

[0032] Example 3: The device of the present invention includes a T-shaped crystallizer: the upper part is a rectangle of 320×260mm, the lower part is a square of 200×200mm, the amount of slag is 30kg, the H value is 50mm, and both electrodes have a cross-section of 200×100mm. For steel billet, two slag electrodes are 200 and 280mm in length, a rectangle with a cross-sectional size of 60×150mm, conductive copper cable, power switch and arc starter. The arc starter 7 is built in the T-shaped mold 5. The slag electrode is welded to the lower end of the electrode, and the two electrodes are respectively connected to the AC power source 10. The drawing mechanism 9 under the mold 5 is connected to the AC power source 10 through a conductive copper cable, and a power switch 11 is provided on the conductive copper cable. T-shaped crystal A molten steel level detection device 6 is arranged outside the mold 5 for detecting the molten steel level signal in the mold 5.

[0033] The solid-stat...

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Abstract

The invention adopts the solid state starting method of the double pole in series electric dregs remelting, it belongs to the technical domain of the metal electric dregs remelting and can be applied in the process of the causing arc slagging of the metal remelting. The steps are showed as follows: 1. two differ length melting dregs electric poles are sealed on the below end of the first pole and the second pole respectively, the electric copper cable is connected with the drawing embryo part, the switch is fixed on the electric copper cable; 2. the switch is off, the first pole, the second pole with two melting dregs descends at one time; 3. the longer melting dregs electric pole touches the causing arc reagent to the monopole power supplying loop, then, the dregs is added to melting the dregs; 4. the longer melting dregs pole melts to the length of the shorter melting dregs pole, the switch is off to form the double pole in series loop; 5. when two melting dregs electric pole melts to the vanish, the process of slagging finishes, the solid starting process finishes. The invention has many merits such as the easy handling, the good effect, the saving of the resource and the high work efficiency.

Description

Technical field [0001] The invention belongs to the technical field of metal electroslag remelting, and particularly relates to a solid-state starting method using bipolar series electroslag remelting in a T-shaped crystallizer, and is applied in the arc slagging process of metal remelting. Background technique [0002] The steel smelted by the electroslag furnace has the advantages of high purity, low sulfur content, few non-metallic inclusions, smooth surface of the steel ingot, uniform and dense crystals, and uniform metallographic structure and chemical composition. Therefore, electroslag furnace equipment has been widely used in steel, machinery and other industries at home and abroad. [0003] In order to directly obtain small-section steel billets after remelting large-section electrodes, T-shaped molds have been widely used in electroslag rapid remelting and electroslag continuous casting technology. The bipolar series electroslag remelting method can avoid the technical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/18
Inventor 臧喜民姜周华张天彪
Owner NORTHEASTERN UNIV LIAONING