Unlock instant, AI-driven research and patent intelligence for your innovation.

Furnace lining pouring material composition for pressure pouring furnace

A pouring material and air pressure pouring technology, applied in the field of refractory materials, can solve the problems of inability to meet the use requirements of the air pressure pouring furnace, waste of manpower and material resources, reduce production efficiency, etc., and achieve enhanced low creep and thermal stability performance, low cost, The effect of improving production efficiency

Inactive Publication Date: 2013-05-08
西安秦翔科技股份有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the current situation of use, the performance of imported refractory materials still cannot meet the requirements for the use of air pressure casting furnaces, and there are serious damages to the furnace lining, especially the corrosion and peeling of the furnace lining. The service life is only 4 to 5 months, and the amount of iron is insufficient. The furnace lining needs to be repaired for 30,000 tons. At this time, it is necessary to stop production for maintenance, which brings great waste of manpower and material resources to normal production. At the same time, it increases the cost of the product and reduces the production efficiency and other defects.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A casting material composition for furnace lining consists of 55-60% of fused plate corundum, 23-27% of andalusite, 3-6% of silicon carbide, 1-3% of silicon micropowder, and 4-7% of calcium aluminate cement according to the mass ratio , Composed of 3-6% aluminum oxide powder. The particle diameter range of described aluminum oxide micropowder is D 50 ≤5μm, in which the mass gradation ratio of the furnace lining castable material composition is: fused tabular corundum with a particle size of 8 to 12 mm accounts for 4 to 7% of the total mass ratio; fused tabular corundum with a particle size of 5 to 8 mm accounts for the total mass ratio 5-8% of the total; 3-5mm particle size 9-13% of the total mass ratio; 1-3mm particle size 8-12% of the total mass ratio; 0.074-1mm particle size The fused plate-shaped corundum accounts for 8-12% of the total mass ratio; the fused plate-shaped corundum with a particle size of # The particle size is 3-6%, the particle size of silica powde...

Embodiment 2

[0034] A furnace lining casting material composition for an air pressure casting furnace according to the mass ratio. , silica powder 2-3%, calcium aluminate cement 5-6%, aluminum oxide powder 4-5%. The particle diameter range of described aluminum oxide micropowder is D 50 ≤5μm. The mass grading ratio of the furnace lining castable composition is the same as in Example 1. The chemical composition requirements of the raw materials are the same as in Example 1.

Embodiment 3

[0036] A furnace lining pouring material composition is composed of 56% fused plate corundum, 26% andalusite, 4.5% silicon carbide, 2.5% silicon micropowder, 5% calcium aluminate cement and 6% aluminum oxide micropowder in mass ratio. The mass gradation ratio of the furnace lining castable composition is as follows: fused plate-shaped corundum with a particle size of 8-12 mm accounts for 7% of the total mass ratio; fused plate-shaped corundum with a particle size of 5-8 mm accounts for 5% of the total mass ratio ; The fused tabular alumina with a particle size of 3-5mm accounts for 10% of the total mass ratio; the fused tabular alumina with a particle size of 1-3mm accounts for 8% of the total mass ratio; the fused tabular alumina with a particle size of 0.074-1mm accounts for the total mass ratio 9% of the total mass ratio; fused plate-shaped corundum with a particle size of # The particle size is 4.5%, the particle size of silicon micropowder ≤ 2μm is 2.5%, the particle size ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a furnace lining pouring material composition for a pressure pouring furnace. The furnace lining pouring material composition comprises the following components in percentage by weight: 55-60% of electrically molten tabular corundum, 23-27% of andalusite, 3-6% of silicon carbide, 1-3% of silica micropowder, 4-7% of calcium aluminate cement and 3-6% of aluminium trioxide micropowder; the furnace lining pouring material composition has the characteristics of long service life, low cost, stable material properties and simple manufacturing method, the electrically molten tabular corundum is taken as a main material, and the silicon carbide is added to improve resistance of the furnace lining to erosion of iron liquid and molten slag; the andalusite is added to obviously improve anti-stripping property and resistance to heat shocks besides enhancing low creep and thermal stability; and the silicon micropowder and the aluminium trioxide micropowder are adopted, so that liquidity of a pouring material is improved and high temperature performance of the pouring material is also improved, and the calcium aluminate cement is taken as a bonding agent. By applying the furnace lining pouring material composition provided by the invention to the pressure pouring furnace, service life can reach 8-10 months, iron influx is 45000-50000 tons, and selling price is less than two thirds that of an imported material, so that the furnace lining pouring material composition provided by the invention can be widely applied to the industries such as metallurgy and casting and has good social and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a lining casting material composition of a pneumatic casting furnace. Background technique [0002] Pneumatic pouring furnace is a new type of key equipment in the foundry industry. With the increase in the amount of nodular cast iron and the miniaturization of castings, the requirements for casting quality and production efficiency are getting higher and higher. A key link that affects whether the pneumatic pouring furnace can be used normally and continuously is Its furnace lining is refractory material. This requires a refractory material with long service life and stable chemical properties as the furnace lining. At present, most of the domestic refractory materials cannot meet the new requirements of use. Our country has successively introduced certain brands of refractory materials produced by foreign companies such as France Saint-Gobain Fine Cer...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陈海让徐凯峰杨正华何康王臻代西龙
Owner 西安秦翔科技股份有限公司