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A crucible basket for vacuum melting furnace and its manufacturing method

A vacuum melting furnace and crucible technology, which is applied in the direction of crucible furnaces, furnaces, furnace types, etc., can solve the problems of low production efficiency and equipment utilization, high production costs, etc., to reduce production costs, improve production efficiency and equipment utilization Effect

Active Publication Date: 2015-08-19
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some advanced vacuum melting furnaces in the United States and Germany have begun to use crucible basket technology, but due to the lack of technical problems such as low strength of the crucible basket, they can only melt bars less than 30kg
[0004] Existing vacuum melting furnaces weighing more than 30kg are produced by directly knotting crucibles in the furnace. Crucible knotting and baking both occupy the vacuum melting furnace. The process of each crucible knotting and baking takes 3-4 hours. The first vacuum melting furnace can only smelt and pour 4~8 batches of products in two shifts per day, and it is inconvenient to operate due to the limited space of the furnace table. The knotted crucible can only pour 2~4 batches of products. After the crucible cools down, the discarded crucibles can be cleaned up before re-casting. Production with crucibles, low production efficiency and equipment utilization, and high production costs

Method used

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  • A crucible basket for vacuum melting furnace and its manufacturing method
  • A crucible basket for vacuum melting furnace and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Configure adhesive; the configured adhesive is water glass solution, coal gangue powder and corundum powder in a weight ratio of 50:3:0.5 to configure the adhesive, stir evenly, and the selected materials for the adhesive are Refractory material, and has high strength after dehydration curing.

[0037] 2) Make the crucible basket cover 1; unfold the crucible basket cover 1 to size and cut the asbestos cloth, wrap it with auxiliary tooling to make the crucible basket cover 1, the asbestos cloth is 4 layers; bond with the prepared adhesive. Store at room temperature for 1-2 hours, the adhesive will be dehydrated and solidified, and the crucible basket 1 will be firmly bonded and reinforced. The crucible basket 1 has sufficient strength and can be used repeatedly.

[0038] 3) Make a crucible basket; add 40-60 mm thick fused magnesia to the bottom of the crucible basket 1, put it into the forming crucible 4, the upper edge of the forming crucible 4 is 20-30 mm higher tha...

Embodiment 2

[0045] 1) Configure the adhesive; the configured adhesive is water glass solution, coal gangue powder and corundum powder in a ratio of 55:4:1 by weight to configure the adhesive, stir evenly, and the selected materials for the adhesive are Refractory material, and has high strength after dehydration curing.

[0046] 2) Make the crucible basket cover 1; cut the asbestos cloth to the size of the crucible basket cover 1, use auxiliary tooling to wrap the crucible basket cover 1, the asbestos cloth is 3 layers; increase the strength of the crucible basket cover 1, and increase the thickness of the asbestos cloth interlayer by 1 ~ 2mm Stainless steel wire mesh; bonded with a good adhesive. Store at room temperature for 1-2 hours, the adhesive will be dehydrated and solidified, and the crucible basket 1 will be firmly bonded and reinforced. The crucible basket 1 has sufficient strength and can be used repeatedly.

[0047] 3) Make a crucible basket; add 40-60 mm thick fused magnesi...

Embodiment 3

[0054] 1) Configure the adhesive; the configured adhesive is water glass solution, coal gangue powder and corundum powder in a weight ratio of 60:4:1.5 to configure the adhesive, stir evenly, and the selected materials for the adhesive are Refractory material, and has high strength after dehydration curing.

[0055] 2) Make the crucible basket cover; cut the asbestos cloth according to the unfolded size of the crucible basket cover, use auxiliary tooling to make the crucible basket cover, the asbestos cloth is 2 layers; increase the strength of the crucible basket cover, add 1-2 mm thick stainless steel wire mesh between the asbestos cloth interlayers ; With a good adhesive bonding. Store at room temperature for 1 to 2 hours, the adhesive will be dehydrated and solidified, and the crucible basket cover will be firmly bonded and reinforced. The crucible basket cover has sufficient strength and can be reused.

[0056]3) Make a crucible basket; add 40-60mm thick fused magnesia t...

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Abstract

The invention relates to a crucible basket for a vacuum smelting furnace and a manufacturing method of the crucible basket. The crucible basket comprises a crucible basket sleeve and a formed crucible, wherein the formed crucible is positioned on the inner side of the crucible basket sleeve; a fireproof material is filled between the formed crucible and the crucible basket sleeve; a furnace neck material is sealed among the fireproof material, the formed crucible and the crucible basket sleeve; the crucible basket sleeve is made by adhering asbestos cloth and a stainless steel silk screen by using an adhesive; the fireproof material adopts fused magnesia and the like; and the furnace neck material is obtained by mixing fireproof mud and water glass. The method for manufacturing the crucible basket for the vacuum smelting furnace comprises the following steps of: (1) arranging the adhesive; (2) manufacturing the crucible basket sleeve; (3) manufacturing the crucible basket; and (4) baking the crucible basket. The crucible basket substitutes for a production mode of directly knotting on a vacuum smelting furnace of more than 30 kilograms, so mass production is realized; during manufacturing and baking of the crucible basket, the vacuum smelting furnace cannot be occupied; therefore, the production efficiency of the vacuum smelting furnace and the utilization rate of the equipment are improved greatly; and the production cost is reduced.

Description

technical field [0001] The invention relates to a crucible basket and a manufacturing method thereof, in particular to a crucible basket used in a vacuum melting furnace and a manufacturing method thereof. Background technique [0002] The crucible of the vacuum melting furnace is repeatedly subjected to the high temperature of the molten metal, which can be as high as 1700 ° C, and the static pressure of the molten metal during the smelting production; The scrap rate of casting inclusions is greatly increased. Therefore, in order to ensure the quality of castings, the crucible of the vacuum melting furnace needs to be replaced with a new crucible every time 2-4 furnaces of molten metal are melted. Therefore, in the production of vacuum melting furnaces, how to quickly replace the crucible is one of the key processes affecting the production efficiency of vacuum melting furnaces. [0003] The crucible basket technology is that the knotting and baking of the crucible are co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B14/10
Inventor 赵风正罗秀广蔡瑜
Owner CHINA HANGFA SOUTH IND CO LTD