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Preparation method of composite inner lining material for casting transfer bag

A composite material and lining technology, which is applied in casting equipment, casting melt containers, manufacturing tools, etc., can solve the problems of not meeting the requirements of use, low erosion resistance, poor resistance to rapid heat and rapid cooling, etc., to improve the resistance to rapid cooling and rapid cooling Thermal performance, convenient material collection, good heat and rapid cooling resistance

Active Publication Date: 2021-02-23
磐石华兴汽车零部件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has low erosion resistance and poor resistance to rapid heat and rapid cooling for the lining of molten steel in the sub-ladle used for foundry. For high-temperature furnaces in the metallurgical industry, it still cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of refractory material of the present invention, its batching is calculated by weight percentage, comprises the steps:

[0016] 1) Preparation of semi-dry material: with 80% Al 2 o 3 Bauxite, plus SiC with a content of 70%, accounted for 50% each, and the particle size was 0.1-3.0mm. Mixed into the main ingredient, mixed with 65% of the main ingredient and 35% of the silicone water repellent and stirred for 10-15 minutes , make Al2O3+SiC composite type semi-dry material, to improve its high-temperature refractory performance; Described organosilicon water-repellent is the solution that pottery clay and aluminum sol are made, and its weight percentage is:

[0017] 5% clay, 95% aluminum sol;

[0018] 2) Preparation of primary pellets: use Al 2 o 3 + 55% of SiC composite semi-dry material and 45% of MgO-based filler are mixed to form a mixture, then 5% of the weight of the mixture is added as an organic binder, mixed evenly, and pressed into a pa...

Embodiment 2

[0022] The 2nd kind of preparation method of refractory material of the present invention, batching is calculated by weight percentage, comprises the following steps: 1) semi-dry material preparation: with the content of 80% Al 2 o 3 Bauxite, plus SiC with a content of 70%, accounted for 50% each, and the particle size was 0.1-3.0mm. Mixed into the main ingredient, mixed with 85% of the main ingredient and 15% of the silicone water repellent and stirred for 10-15 minutes , made of Al2O3+SiC composite semi-dry material; the organosilicon water-repellent is silane.

[0023] 2) Prepare a ball material: its ingredients are calculated by weight percentage: mix 85% of Al2O3+SiC composite semi-dry material with 15% of MgO filler to form a mixture, and then add 15% of the weight of the mixture. agent, mixed evenly, pressed into balls with a particle size of 5.0mm by a ball press machine, dried and solidified at a temperature of 300-350°C, and its moisture content was <1%;

[0024] T...

Embodiment 3

[0027] The third preparation method of the refractory material of the present invention comprises the following steps: ingredients are calculated in weight percent: 1) Semi-dry material preparation: Al2O3 bauxite with a content of 80%, plus SiC with a content of 70% 50%, the particle size is 0.1-3.0mm, mix it into the main material, mix and stir 10-15 minutes with 80% of the main material and 20% organic silicon water repellent agent, and make Al2O3+SiC composite semi-dry material; the organic silicon The water repellent is polysiloxane.

[0028]2) Prepare a ball material: its ingredients are calculated by weight percentage: mix 70% of Al2O3+SiC composite semi-dry material and 30% of MgO filler to form a mixture, and then add 10% of the weight of the mixture. agent, mixed evenly, pressed into balls with a particle size of 0.3 to 3.5mm by a ball press machine, dried and solidified at a temperature of 300 to 350°C, and its moisture content was <1%; the organic binder was ethyl s...

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PUM

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Abstract

The invention relates to a preparation method of composite liner material for a transfer ladle for casting. The preparation method comprises the following steps: (1) preparing a half-dried material: uniformly mixing raw materials including Al2O3 and SiC with particles sizes of 0.1mm-3.0mm with an organosilicone water repellent, so as to obtain the half-dried material; (2) preparing primary balls:uniformly mixing the half-dried material obtained in the step (1) with a MgO-base filling material, adding an organic binding agent into the mixture, uniformly mixing, and carrying out compression ina ball pressing machine so as to obtain balls with the particle sizes of 0.5mm-5.0mm; (3) preparing secondary balls: uniformly mixing the primary balls prepared in the step (2) with a C-base filling agent, so as to obtain a second mixture, adding organic sol into the second mixture, and carrying out compression in the ball pressing machine so as to obtain secondary balls with the particle sizes of5.0mm-20mm; and (4) crushing the secondary balls obtained in the step (3) into particles with the particle sizes of 0.5mm-8.0mm, so as to obtain the granular liner material. The composite liner material prepared by virtue of the preparation method is capable of enhancing the erosion resistance and resisting the sudden heating and cooling.

Description

technical field [0001] The invention relates to a method for preparing a composite inner lining material for a casting subcontractor, in particular to a method for preparing a refractory material for an inner lining of a high-temperature kiln. Background technique [0002] Composite Al 2 o 3 +SiC material is a high temperature resistant material with small thermal conductivity and good fire resistance. However, for the short casting process, the transfer ladle is lined with molten steel. It has low erosion resistance, poor resistance to rapid heat and rapid cooling, affect its use. For this reason, people have developed various composite materials by using different binders, making them widely used in industrial production. 1992.9) has been described in more detail. These composite materials play a very good role in energy saving and consumption reduction of the kiln. However, it has low erosion resistance and poor resistance to rapid heat and rapid cooling for the molt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/626B22D41/02
CPCB22D41/02C04B35/62204C04B35/62695C04B35/66C04B2235/3206C04B2235/3217C04B2235/3218C04B2235/349C04B2235/3826C04B2235/422C04B2235/483
Inventor 柳立民王伟国李海航彭东程乐孟智敏
Owner 磐石华兴汽车零部件制造有限公司