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Composition used for manufacturing crucible of medium-frequency induction furnace

A composition and induction furnace technology, applied in the direction of crucible furnaces, furnaces, furnace types, etc., can solve problems such as poor thermal stability and low refractoriness, and achieve the effects of being less prone to defects, improving relative density, and reducing the risk of furnace leakage

Inactive Publication Date: 2015-04-22
BENGANG STEEL PLATES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The task of the present invention is to provide a composition for making crucibles for intermediate frequency induction furnaces to solve the problems of poor thermal stability and low refractoriness of crucibles by using materials with ideal insulation properties and sintering strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Equipped with 100kg of crucible-making composition, take 97kg of fused magnesia after magnetic separation, this kind of fused magnesia adopts four different particle sizes, among them, take 38.8kg of 5-8 purpose fused magnesia, 3- Take 9.7kg of fused magnesia for 5 mesh, 19.4kg for fused magnesia for 0.1-1 mesh, and 29.1kg for fused magnesia for 190-210 mesh. After mixing these four kinds of fused magnesia with different particle sizes, Then take 1 kg of boric acid and 2 kg of water and stir with the mixed fused magnesia, which is equipped as a combination for making a crucible.

Embodiment 2

[0011] Equipped with 100kg of crucible-making composition, take 98kg of fused magnesia after magnetic separation, this kind of fused magnesia adopts four different particle sizes, among them, take 39.2kg of 5-8 purpose fused magnesia, 3- Take 9.8kg of fused magnesia for 5 mesh, 19.6kg for fused magnesia for 0.1-1 mesh, and 29.4kg for fused magnesia for 190-210 mesh. After mixing these four kinds of fused magnesia with different particle sizes, Get the water of 0.5kg boric acid and 1.5kg again and be equipped with the combination that makes crucible by the mode of embodiment 1.

Embodiment 3

[0013] Equipped with 100kg of crucible-making composition, take 98kg of fused magnesia after magnetic separation, this kind of fused magnesia adopts four different particle sizes, among them, take 38.8kg of 5-8 purpose fused magnesia, 3- Take 9.7kg of fused magnesia for 5 mesh, 19.4kg for fused magnesia for 0.1-1 mesh, and 29.1kg for fused magnesia for 190-210 mesh. After mixing these four kinds of fused magnesia with different particle sizes, Get the water of 0.5kg boric acid and 1.5kg again and be equipped with the combination that makes crucible by the mode of embodiment 1.

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Abstract

The invention relates to a composition used for manufacturing a crucible of a medium-frequency induction furnace. The composition is composed of fused magnesite obtained after magnetic separation, water and boric acid. The crucible made of the composition can keep sintering temperature and reduce furnace leakage, a high-compactness refractory layer can be formed, good sintering performance can be achieved, and therefore furnace leakage can be reduced, and the crucible is not likely to have defects in use.

Description

technical field [0001] The invention relates to a composition for making a crucible of an intermediate frequency induction furnace. Background technique [0002] Medium frequency induction furnace is equipment for melting low alloy carbon steel, stainless steel, high manganese steel, alloy cast iron and other materials, in which the filling called furnace lining or crucible (hereinafter referred to as crucible) is located between the induction coil and the heated Between the molten metal, the crucible is composed of a refractory layer, a thermal insulation layer and an insulating layer. Because the working conditions of the crucible are very harsh, and the furnace lining wall is thin, the inner side of the crucible is directly subjected to the thermal shock of high-temperature metal and the erosion of slag liquid, and the stirring force formed under the action of the electromagnetic field is used in the process of melting materials to make the furnace lining suffer greatly. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B14/10C04B35/04
Inventor 张文鑫
Owner BENGANG STEEL PLATES