Equipment and technique for ladle-to-ladle, degasification and vacuum ingot casting of multiple-slide runner ladle

A technology of sliding nozzle and ladle, which is applied to equipment, casting equipment, metal processing equipment, etc. for feeding molten metal into casting molds, can solve problems such as prolonging casting time, and achieve the effect of simplifying equipment and simplifying process.

Inactive Publication Date: 2009-01-28
冬燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Casting can only be started after the filling material is released, which will prolong the casting time

Method used

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  • Equipment and technique for ladle-to-ladle, degasification and vacuum ingot casting of multiple-slide runner ladle
  • Equipment and technique for ladle-to-ladle, degasification and vacuum ingot casting of multiple-slide runner ladle

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Experimental program
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Effect test

Embodiment Construction

[0145] I think the preferred way to implement the present invention is

[0146] 1 Preliminary comparative test

[0147] The comparative test of "directly vacuum casting a 100t large steel ingot from a package of undegassed molten steel after refining" was carried out in the steelmaking branch of Juki Enterprise with 100-ton LF refining, VD degassing and vacuum ingot casting equipment

[0148] 1.1 Using the existing vacuum ingot casting technology: the sliding nozzle ladle containing 100 tons of refined and undegassed molten steel is poured into the plug rod type tundish in the atmosphere, and then the plug rod is opened to vacuum the 100t large steel ingot mold in the vacuum chamber A hundred-ton ingot was cast.

[0149] 1.2 Adopt the process plan (i.e. 2.2.3 process plan) proposed by me of "directly vacuum casting a large steel ingot with a sliding nozzle ladle of molten steel after refining", cancel the stopper-type tundish, and the ladle sits on the vacuum chamber cover ,...

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Abstract

A device for the pouring and degassing of a plurality of sliding water gap packets as well as casting ingots in vacuum and a technique thereof belong to the field of vacuum steel flow degassing method. The invention avoids the defect of polluting the molten steel generated by the secondary oxidation when the sliding water gap packets pour to the middle packet of a plug stick in the atmosphere during the existing ingot casting method in vacuum. The invention comprises a plurality of slide water tap packets and degassing covers as well as vacuum chambers, etc. The vacuum chamber filled with an ingot mold is vacuumized, and then the middle packet of the sliding water tap filled with protective slag after being baked is sat on the cover of the vacuum chamber and is buckled with the degassing cover for vacuumizing. The first packet of the molten steel is sat on the degassing cover; the water tap is opened for pouring and degassing; the water tap of the middle packet is opened for begging casting ingots in vacuum when a regulated time arrives; after the first packet of the molten steel is cast, the lower of the degassing cover breaks the vacuum to hoist away the empty packet and a new packet is sat; then after the new packet is vacuumized, the water tap of the new packet is poured and degassed; the molten steel is supplemented to the middle packet to continuously carry out ingot casting in vacuum, thus finishing casting a heavy ingot. As liquid slag in the middle packet obstructs the atmosphere and the molten steel when pouring, degassing and breaking the vacuum, the device and the technique avoid the defects like 'secondary oxidation' of the existing ingot casting method.

Description

technical field [0001] The invention belongs to the technical field of the vacuum steel flow degassing method (TD-SLD) and the vacuum casting method (TD-VC). [0002] The further extension also involves the blowing Ar stirring ladle degassing method (FinKL) method in the vacuum ladle degassing method, which is often called the technical field of VD method in my country. (Note 1) Background technique [0003] 1. The status quo of the existing molten steel "vacuum ingot casting technology" is: [0004] One or more ladles of molten steel are sliding nozzle ladles filled with undegassed (or degassed) molten steel after LF refining. Inject molten steel into the plug-rod tundish for pouring. When the vacuum degree in the vacuum chamber reaches 67Pa, when the liquid steel level in the tundish has a certain height, open the stopper rod and carry out vacuum casting (TD-VC method), and finally cast into a large ingot or multiple ladles of molten steel in turn. An extra large steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/06B22D35/04B22D41/22
Inventor 冬燕
Owner 冬燕
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