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A large-scale steel ingot electroslag thermal capping device and method with evenly distributed heat source

A technology of uniform distribution and steel ingots, applied in the field of electroslag thermal capping devices for large steel ingots, can solve the problems of not being suitable for large steel ingots, low heating efficiency, long current loop, etc. , good heating effect

Active Publication Date: 2016-05-25
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is for large cast steel backup rolls, not suitable for large steel ingots
In addition, the patent uses single-electrode electroslag heating, which makes the current loop long and the heating efficiency is low
When the current passes through the large cast steel backup rolls, Joule heat will also be generated, which will adversely affect the original solidification process

Method used

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  • A large-scale steel ingot electroslag thermal capping device and method with evenly distributed heat source

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Experimental program
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Effect test

Embodiment 1

[0041] A large-scale steel ingot electroslag thermal capping device with evenly distributed heat sources, such as figure 1 As shown, it includes hydraulic fixed support 12, hydraulic transmission rod 13, lifting arm 11, control cabinet 15 and trolley 16; hydraulic fixed support 12, control cabinet 15 are all installed on the trolley 16, and lifting arm 11 is inserted into the hydraulic fixed support In the seat 12, the hydraulic fixed support base 12 is connected to the hydraulic transmission rod 13, and the hydraulic transmission rod 13 is connected to the control cabinet 15;

[0042] It also includes an upper holder 2, a lower holder 3, an upper electrode cross arm 8, a lower electrode cross arm 9 and a double-layer graphite electrode pair;

[0043] The inner graphite electrode 1 of the double-layer graphite electrode pair is a solid column, and the outer graphite electrode 4 is a hollow tube. The two electrodes are coaxially aligned and inserted into the liquid pre-slag in ...

Embodiment 2

[0064] A large-scale steel ingot electroslag thermal capping device with evenly distributed heat sources, such as figure 1 As shown, it includes hydraulic fixed support 12, hydraulic transmission rod 13, lifting arm 11, control cabinet 15 and trolley 16; hydraulic fixed support 12, control cabinet 15 are all installed on the trolley 16, and lifting arm 11 is inserted into the hydraulic fixed support In the seat 12, the hydraulic fixed support base 12 is connected to the hydraulic transmission rod 13, and the hydraulic transmission rod 13 is connected to the control cabinet 15;

[0065] It also includes an upper holder 2, a lower holder 3, an upper electrode cross arm 8, a lower electrode cross arm 9 and a double-layer graphite electrode pair;

[0066] The inner graphite electrode 1 of the double-layer graphite electrode pair is a solid column, and the outer graphite electrode 4 is a hollow tube. The two electrodes are coaxially aligned and inserted into the liquid pre-slag in ...

Embodiment 3

[0087] A large-scale steel ingot electroslag thermal capping device with evenly distributed heat sources, such as figure 1 As shown, it includes hydraulic fixed support 12, hydraulic transmission rod 13, lifting arm 11, control cabinet 15 and trolley 16; hydraulic fixed support 12, control cabinet 15 are all installed on the trolley 16, and lifting arm 11 is inserted into the hydraulic fixed support In the seat 12, the hydraulic fixed support base 12 is connected to the hydraulic transmission rod 13, and the hydraulic transmission rod 13 is connected to the control cabinet 15;

[0088] It also includes an upper holder 2, a lower holder 3, an upper electrode cross arm 8, a lower electrode cross arm 9 and a double-layer graphite electrode pair;

[0089] The inner graphite electrode 1 of the double-layer graphite electrode pair is a solid column, and the outer graphite electrode 4 is a hollow tube. The two electrodes are coaxially aligned and inserted into the liquid pre-slag in ...

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Abstract

The invention provides a large steel-ingot electro-slag hot-topping device evenly provided with heat sources and a large steel-ingot electro-slag hot-topping method. The device comprises a hydraulic fixing support, a hydraulic transmission rod, a lifting arm, a control cabinet, a trolley, an upper clamping device, a lower clamping device, an upper electrode cross arm, a lower electrode cross arm and a double-layer graphite electrode pair. An inner-layer graphite electrode of the double-layer graphite electrode pair is in a solid column shape, an outer-layer graphite electrode is in a hollow pipe shape, the two electrodes are coaxially arranged, flushed with each other and inserted into liquid premelting slag in a feeder head box; the upper electrode cross arm and the lower electrode cross arm are connected to the lifting arm and connected with the control cabinet. The inner-layer graphite electrode is clamped by the upper clamping device, and the upper clamping device is connected to the upper electrode cross arm. The outer-layer graphite electrode is clamped by the lower clamping device, and the lower clamping device is connected to the lower electrode cross arm. By means of the large steel-ingot electro-slag hot-topping device and the method, the metal yield is increased, the uniformity of steel-ingot chemical components and purity degree of steel are improved; the solidification condition of the centers of the steel ingots is improved; the heating efficiency is high, the heating effect is good, the utilization rate of feeder head molten steel is increased; the utilization rate of the steel ingots is increased.

Description

technical field [0001] The invention belongs to the field of electroslag metallurgy and heavy equipment manufacturing, in particular to a large-scale steel ingot electroslag heat sealing device and method for evenly distributing heat sources. Background technique [0002] With the development of heavy equipment and nuclear power in China, the quality requirements for large steel ingots are getting higher and higher. In the process of preparing large steel ingots, there are problems such as loose shrinkage cavities, which are mainly caused by the insufficient insulation capacity of the riser and the smooth feeding of molten metal. The key to solving the above problems is to improve the insulation capacity of the riser, ensure the smoothness of the feeding channel, and improve the feeding capacity of the riser. [0003] At present, there are already electric heating riser technologies in the industrial field, and these technologies heat and keep the riser through methods such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D27/04B22D7/12
CPCB22D7/12B22D27/04
Inventor 李宝宽王强李林敏荣文杰王芳
Owner NORTHEASTERN UNIV LIAONING
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