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Furnace drying method for new intermediate-frequency furnace during pre-alloyed powder smelting

A furnace method and pre-alloyed powder technology, applied in the direction of furnaces, crucible furnaces, furnace components, etc., can solve the problems of poor baking effect of furnace lining materials, short service life of furnace lining, affecting production rhythm, etc., and achieve the expansion of sintered layer thickness , improve service life, good melting effect

Active Publication Date: 2017-11-07
HUBEI EXIN DIAMOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main problems of the intermediate frequency furnace new furnace are: long baking time, generally at least 24 hours, which affects the production rhythm; the baking effect of the lining material is not good, and the service life of the lining is short; the melting power consumption is high and the effect is poor

Method used

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  • Furnace drying method for new intermediate-frequency furnace during pre-alloyed powder smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for baking a new intermediate frequency furnace for pre-alloyed powder smelting, comprising the following process steps:

[0023] (1) Use an electric oven to raise the temperature of the new furnace from room temperature to 100°C, the heating rate is controlled at 2.5 / min, and the time is 0.5 hours;

[0024] (2) Use an electric oven to raise the furnace temperature from 100°C to 400°C, and control the heating rate at 1.25°C / min for 4 hours;

[0025] (3) Use an electric oven to raise the furnace temperature from 400°C to 900°C, and control the heating rate at 4.15°C / min for 2 hours;

[0026] (4) After the furnace temperature reaches 900°C, add 80Kg of pure iron rods into the new furnace. Be careful not to collide with the furnace lining when feeding. The lower layer is compact and the upper layer is loose to avoid bridging;

[0027] (5) Power on the intermediate frequency furnace, raise the temperature from 900°C to 1200°C, and control the heating rate at 10°C / ...

Embodiment 2

[0031] A method for baking a new intermediate frequency furnace for pre-alloyed powder smelting, comprising the following process steps:

[0032] (1) Use an electric oven to raise the temperature of the new furnace from room temperature to 100°C, the heating rate is controlled at 2.5 / min, and the time is 0.5 hours;

[0033] (2) Use an electric oven to raise the furnace temperature from 100°C to 400°C, the heating rate is controlled at 1.5°C / min, and the time is 3.33 hours;

[0034] (3) Use an electric oven to raise the furnace temperature from 400°C to 900°C, the heating rate is controlled at 5.0°C / min, and the time is 1.67 hours;

[0035] (4) After the furnace temperature reaches 900°C, add 85Kg of pure iron rods into the new furnace. Be careful not to collide with the furnace lining when adding materials. The lower layer is compact and the upper layer is loose to avoid bridging;

[0036] (5) Then power on the intermediate frequency furnace, raise the temperature from 900°C ...

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Abstract

The invention discloses a furnace drying method for a new intermediate-frequency furnace during pre-alloyed powder smelting. According to the furnace drying method for the new intermediate-frequency furnace during pre-alloyed powder smelting, scientific and reasonable design is adopted, moisture in brickwork is dissipated slowly and reasonably by controlling the heating rate, so that sudden stress changes are avoided, and the influence of disordered and arbitrary operation on furnace drying is avoided; and compared with a traditional technique, the furnace drying method has the advantages that a furnace drying temperature curve of the new furnace is designed scientifically and reasonably, the furnace drying time is short, the production efficiency is high, the service life of the new furnace is long, and the smelting effect is good.

Description

technical field [0001] The invention belongs to the field of pre-alloyed powder smelting, and in particular relates to a method for baking a new 100Kg intermediate frequency furnace. Background technique [0002] At present, the new furnaces of intermediate frequency furnaces basically use electric ovens. In order to discharge the moisture in the lining materials in time, the new furnaces need to slowly increase the power during the oven process and strictly control the heating rate. [0003] The main problems of the new intermediate frequency furnace oven are: long oven time, generally at least 24 hours, which affects the production rhythm; the lining material does not bake well, and the service life of the lining is short; melting power consumption is high, and the effect is poor. Contents of the invention [0004] The object of the present invention is to overcome the deficiencies of the prior art, and provide a new furnace oven method for intermediate frequency furnace...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C33/04F27B14/06F27D1/16
CPCC22C1/02C22C33/04F27B14/06F27B14/061F27D1/1678
Inventor 王雄赵亚良
Owner HUBEI EXIN DIAMOND TECH
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