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Continuous casting monolithic stopper and method of manufacture thereof

A technology of integral stopper rod and continuous casting, which is used in manufacturing tools, casting equipment, casting melt containers, etc., can solve the problems that stopper rods have not yet been used, and achieve good thermal shock resistance, high temperature strength, and erosion resistance. sexual effect

Active Publication Date: 2016-07-13
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Typical applications in the iron and steel industry include: castables for iron troughs, castables for furnace gates of mixed iron cars, castables for desulfurization spray guns, castables for ladles, breathable bricks, castables for RH impregnated pipes, castables for CAS impregnated pipes, etc. However, It has not been used in the production of stoppers

Method used

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  • Continuous casting monolithic stopper and method of manufacture thereof
  • Continuous casting monolithic stopper and method of manufacture thereof
  • Continuous casting monolithic stopper and method of manufacture thereof

Examples

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Embodiment

[0052] The rod castables, rod head castables and Al of Examples 1-5 of the present invention 2 o 3 The composition of the coating is shown in Table 1, wherein the content of each component is expressed in mass percentage (wt.%).

[0053] Embodiment 1-5 of the present invention has a body diameter of 140-160 mm as a whole stopper rod, steel core adopts a steel pipe with an outer diameter of 40-55 mm, the lower port of the steel pipe is welded and sealed with a steel plate, and a downward anchor is provided.

[0054] The production method of integral stopper for continuous casting of the present invention comprises the steps:

[0055] 1) Molding

[0056] Fix the steel core at the center of the stopper mold, and brush the inner wall of the stopper mold with machine oil;

[0057] 2) Pouring molding

[0058] First add a water reducing agent to the casting material for the rod head prepared according to the ratio in Table 1, add water and stir evenly, pour it into the stopper mo...

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Abstract

The invention discloses a continuous casting monolithic stopper and a method of manufacture thereof.The monolithic stopper comprises a stopper body, a steel core inserted into the stopper body and a head connected to the lower end of the stopper body, the surface of the steel core is provided with an anchor, the surface of the monolithic stopper is coated with Al2O3 coating; the stopper body is made by casting castables comprising mullite, the head is made by casting castables comprising corundum and sintered mullite, and the monolithic stopper is manufactured by monolithic casting.The stopper obtained herein is good in monolithicity, is free of brick joint and head shedding problems of sleeve brick stoppers, has good thermal shock resistance, high strength and good resistance to molten steel scour erosion, is simple to manufacture and low in cost, and is suitable for stopping a tundish nozzle under low continuous casting, high-oxygen steel continuous casting and skid flow control.

Description

technical field [0001] The invention relates to a stopper rod manufacturing technology, in particular to an integral stopper rod for continuous casting and a manufacturing method thereof. Background technique [0002] Stopper rods belong to the three major functional refractory materials for continuous casting, and play a very important role in continuous casting production. During the continuous casting of molten steel, the flow of molten steel needs to be controlled to obtain a suitable casting speed and a qualified slab. The control methods of molten steel flow include slide plate flow control and stopper rod flow control. Although the flow control of the slide plate is accurate, it is easy to suck air, which is not good for the quality of molten steel, and it is easy to produce bias flow. The flow control of the stopper rod has the advantages of less air intake and non-biased flow of molten steel. According to the shape, the stopper rod is divided into an integral stop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B41/87B22D41/18
CPCB22D41/186C04B35/66C04B41/009C04B41/5031C04B41/87
Inventor 姚金甫金从进何平显
Owner BAOSHAN IRON & STEEL CO LTD
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