Knotting process for permanent layer of small and medium-sized refining ladle

A process method and permanent layer technology, applied in the direction of manufacturing tools, metal processing equipment, casting melt containers, etc., can solve the problems of poor knotting effect of the permanent layer, inconvenient mold preparation and practical operation, etc., and achieve good masonry quality. , the effect of saving turnover, practicality and wide applicability

Active Publication Date: 2016-03-16
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the knotting thickness of the permanent layer of the small and medium-sized ladle is relatively thin, the mold preparation and practical operation of the ladle are very inconvenient, so the knotting effect of the permanent layer is very poor when using the normal process operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The process steps are as follows:

[0015] Step 1: Lay a layer of 20 mm thick insulation board on the bottom of the ladle;

[0016] Step 2: Knot the permanent layer of the bottom of the bag and keep it healthy for 24 hours;

[0017] Step 3: After the bottom of the bag is completely solidified, lay the bottom bricks; paste the first layer of insulation board on the wall along the bottom of the bag, and build the first layer of working bricks, leaving a gap of 75-90 mm in the middle;

[0018] Step 4: Fill the gap between the wall brick and the heat insulation layer with water and a good aluminum-magnesium spinel castable. The proportion of water is 6-7%. Use a vibrating rod to vibrate;

[0019] Step 5: Paste the second layer of insulation board on the wall, build the second layer of working bricks, pour the second layer of castable and compact, and then build layer by layer;

[0020] Step 6: Keep in good health for 12 hours; first bake on low fire for 4 hours, then bake on high fire...

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PUM

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Abstract

The invention relates to a novel tamping process method for a middle and small size refined steel ladle permanent layer, in particular to a quite efficient permanent layer tamping structure and belongs to the category of the steel ladle bricklaying process. In specific operation, bricks on a working layer serve as molds, the permanent layer is directly tamped between the working layer and a thermal insulating layer and maintained for a period of time, the permanent layer rapidly enters a baking period, so that ladle repair time is further shortened, and repairing and bricklaying are better and more effective; mold cost is omitted and ladle bricklaying time is greatly shortened. The method is wide in application prospect, lays a firm foundation for effective operation of the metallurgy bricklaying process and points a new direction for development of the permanent layer tamping process.

Description

Technical field [0001] The invention relates to a special structure that simplifies ladle refractory bricks as a permanent layer of a mold and directly knots them. Background technique [0002] The new knotting process for the permanent layer of small and medium-sized refined ladle is mainly composed of a few steps such as pasting heat insulation board, laying refractory bricks, pouring and knotting permanent layer, curing and baking. Due to the small knotting thickness of the permanent layer of small and medium-sized ladle, the mold preparation and practical operation of the ladle are very inconvenient, so the permanent layer knotting effect is very bad using normal process operation. In order to effectively realize the good knotting effect of the permanent layer of small and medium-sized ladle, and shorten the knotting cycle, we use the refractory bricks of the working layer as a mold first, and directly inject the permanent layer of aluminum-magnesium spinel between the therma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/02
Inventor 袁志亮戎子臣宫心波吴英顾福奇周佩超王拓戴艳涛李祖良高书江
Owner HARBIN ELECTRIC MASCH CO LTD
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