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Aluminum Oxide Blasting Wholesale Price Switzerland

Obviously, this is not the result of molten iron melting loss, but the result of gas phase erosion(silicon carbide price). When the temperature is below 300 ℃, this kind of effect hardly occurs, but the oxidation of carbon brick is more significant when the temperature is above 500 ℃, especially when the operation and management are not good(brown aluminum oxide 16 grit), the oxidation speed is faster and the carbon brick is seriously damaged. Thermal stress action.

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The effect of thermal stress is also throughout the blast furnace, and can accelerate the speed of mechanical wear and chemical erosion(green carborundum). As we all know, the hearth is cylindrical, and there are cooling facilities outside. At the junction of the fusion layer and the unchangeable layer, due to the difference of temperature and thermal conductivity(white aluminium oxide super fine), cracks or cracks will also occur, which is especially obvious in the brick lining of the hearth wall.

In this case, the temperature distribution along the depth direction and the radius direction are different(silicon carbide companies). Due to the effect of temperature gradient, the lining of the working layer and the center of the bottom of the furnace is under pressure due to thermal expansion, the bottom is flat(aluminum oxide 30 or 40 grit), while the lining of the bottom edge and the bottom of the furnace is under tension due to the low temperature. And reduce the cost of materials.

For the comprehensive furnace bottom of blast furnace(arc fused alumina), if the structure of annular carbon brick is unreasonable, and it is staggered with aluminum silicate refractory brick, the performance of the two is different, which destroys the integrity of furnace cold structure and increases the degree of damage(brown aluminium oxide 24 mesh). In other words, resuming and nodulation, the thermal stress failure is closely related to the operating conditions and furnace conditions.

When the blast furnace temperature fluctuates, such as opening, shutting down, shutting down(fused alumina), as well as the higher lining temperature at the tapping and slag side, the destructive effect of thermal stress is greater. In addition, if the furnace is not baked properly, cracks will occur when the bricks are baked under the action of thermal stress(aluminum oxide blasting media), which will cause hidden dangers and shorten the service life of the furnace bottom.

It was found during the shutdown inspection that the residual thickness of 2428 mm at the bottom center line was not repaired, and it was put into production again(brown fused alumina). Based on the isotherm theory established by k.w.colin, the erosion line of furnace bottom brick is basically consistent with the solidification temperature of molten iron (1150 ℃), so that the material and structural type of furnace bottom have changed fundamentally(white aluminum oxide grit).

The United States and Japan began to use carbon brick furnace bottom in 1940 and 1951, respectively, and the popularization and development are relatively fast(brown aluminum oxide). Like the shape of the bottom after erosion, and when there is cooling, it generally presents the shape of the bottom of the pot(brown aluminum oxide sandblasting). The quality of cooling facilities is the key to the longevity of furnace bottom. The binder is generally made of modified phenolic resin and other materials.

The comprehensive furnace bottom has been popular since the 1950s, and it still has strong vitality today(brown aluminium oxide). When there is no cooling at the bottom of 1513m blast furnace, the erosion depth is about 1950 mm, it is about 700 millimetres. When the bottom of large and medium-sized blast furnaces in our country has cooling system(low sodium white fused alumina), the erosion depth of molten iron is about 1 meter, and in some cases it is close to 2 meters.

white aluminium oxide
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