Bearing block smelting process

A technology of bearing seat and process, which is applied in the field of smelting process of bearing seat, can solve the problems of low alloy composition and structure uniformity, serious burning and volatilization of alloy elements, and large change of chemical composition, so as to improve the working environment and ecological environment, The effect of short melting time and short smelting cycle

Inactive Publication Date: 2012-10-31
陆宝庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the smelting of bearing seats is carried out in a water-cooled copper pincer crucible vacuum arc melting button furnace. The control and smelting time is long, and at the same time, there is pollution of the tungsten alloy electrode to the alloy, the alloy composition and structure uniformity are low, only small-volume metals can be smelted, and the application range is small

Method used

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Examples

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specific Embodiment approach

[0016] A specific embodiment of the smelting process of the bearing seat of the present invention includes the following steps:

[0017] A, preparation pond charge, pond charge comprises 10-22% refractory mud, 35-45% quartz sand and 40-55% water;

[0018] B. Fill the pond furnace material into the cupola to make the pond furnace, and open the air hole on the pond furnace;

[0019] C. Adjust the temperature in the cupola to 500-700°C, and dry the pond furnace;

[0020] D. A fire is fired in the cupola, and the temperature rises to 900°C;

[0021] E. Loading into the pond furnace, the material of loading includes: 5-7% coke, 35-42% new iron, 15-22% old iron, 35-42% scrap steel, 0.6-0.7% silicon, 0.6- 0.7% manganese, 0.6-0.7% iron;

[0022] F, the temperature in the cupola is raised to 900-1200°C, and the material in the cupola is smelted;

[0023] G. Open the cupola, release the molten iron, and add 0.6%-0.75% copper, 0.5%-0.6% chromium, and 0.4%-0.5% molybdenum to the molte...

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PUM

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Abstract

The invention discloses a bearing block smelting process. The bearing block smelting process includes steps of preparing hearth furnace burden comprising fire clay, quartz sand and water; filing the hearth furnace burden into a cupola furnace to produce a hearth furnace and then reserving a tuyere on the hearth furnace; increasing the internal temperature of the cupola furnace to dry the hearth furnace; making a fire in the cupola furnace and increasing the internal temperature of the cupola furnace to be 900 DEG C; charging the furnace with materials including coke, pig iron, wrought iron, scrap steel, silicon, manganese and iron; increasing the internal temperature of the cupola furnace to be 900-1200 DEG C and then smelting the materials in the cupola furnace; opening the cupola furnace to discharge molten iron at the temperature ranging from 1400 DEG C to 1450 DEG C while adding 0.6%-0.75% of copper, 0.5%-0.6% of chromium and 0.4%-0.5% of molybdenum into the molten iron; and finally pouring the molten iron into a mold cavity by a bull ladle so as to realize casting. The bearing block smelting process used for casting has the advantages of simplicity, short smelting cycle and wide applicable range.

Description

Technical field: [0001] The invention relates to a melting process of a bearing seat. Background technique: [0002] At present, the smelting of bearing seats is carried out in a water-cooled copper pincer crucible vacuum arc melting button furnace. It takes a long time to control and smelt. At the same time, there is pollution of the tungsten alloy electrode to the alloy, and the alloy composition and structure uniformity are low. Only small-volume metals can be smelted, and the application range is small. Invention content: [0003] The object of the present invention is to overcome the above disadvantages, and provide a melting process for bearing housings with simple melting process, short melting cycle and wide application range. [0004] The purpose of the present invention is achieved through the following technical solutions: a melting process for a bearing seat, comprising the following steps: [0005] A, preparation pond charge, pond charge comprises 10-22% ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/08C22C37/06
Inventor 陆宝庆
Owner 陆宝庆
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