Steel Fiber Castable for Aluminum Melting Furnace

Refractory castable is a mixture composed of refractory aggregate, powder and binder. After adding water or other liquids, it is suitable for construction by pouring and vibration methods. It can also be prefabricated into preforms with specified shapes and sizes for constructing industrial furnace linings. For refractory castables used for parts subject to large mechanical forces or strong thermal shocks, if an appropriate amount of stainless steel fiber is added, the toughness of the material will be significantly increased. For example, special steel fiber castable for aluminum melting furnace. In the heat-insulating refractory castable, if inorganic fiber is added, it can not only enhance the toughness, but also help to improve its heat insulation performance.

Performance Advantages of Steel Fiber Castables

 
The castable in which heat-resistant steel fibers with a length of 20-35mm are added to the mixture composed of refractory aggregates, binders and additives can be called steel fiber castables. Steel fiber castables can restrain the castables from shrinking during curing, grilling and high temperature use. After adding steel fiber, it not only improves the toughness of the castable, but also improves the mechanical impact and mechanical strength.
 
In general, after adding steel fiber, the thermal shock performance of the castable is relatively improved. Under the action of preventing microcracks and mechanical stress, steel fiber castables can prevent fracture or peeling. The use effect of steel fiber refractory castable is closely related to the production process. According to the conditions of use, the proportion of steel fiber added is also different, and the excessive addition is not acceptable.

Steel Fiber Added into Castable

 
Many refractory castable manufacturers have also put a lot of effort in adding steel fiber to the external dimensions. In different situations, the cross-section of the steel fiber is different, such as round, square, diamond, crescent, etc. Generally, straight steel fibers with crescent shape are used. This kind of fiber can increase the contact area between the steel fiber and the castable, increase the friction, without affecting the mixing and stirring performance, and easy to be evenly dispersed in the castable matrix.
The heat-resistant steel fiber in the steel fiber refractory castable is made of stainless steel or heat-resistant steel with alloy elements such as chromium-nickel. Its manufacturing methods are as follows: steel wire cutting and profiling method, rigid block cutting method and steel melting extraction method. It can be said that the first two methods have stable quality and high strength, but the price is more expensive. The last method is simple in process, singular in shape, strong in grip and low in cost. There are many manufacturers, so many applications. Some experiments and production practices at home and abroad have proved it. In any kind of refractory materials, refractory plastics and refractory ramming materials, the addition of heat-resistant steel fibers with a mass of 1 to 5% will achieve the effect of strengthening and toughening.

The Effect of Adding Steel Fiber to Castable

 
(1) The refractory castable added with steel fiber has significant advantages in improving its resistance to rapid cold and heat and mechanical shock resistance.
(2) The service temperature limit of 310# steel fiber is 1300℃.
(3) The appropriate amount of steel fiber is 3%. Taking into account the high price of steel fiber, the addition amount can be reduced by 0.5% to 1% on the basis of 3%.
 

Construction of Steel Fiber Refractory Castable

 
During the construction of steel fiber reinforced refractory castable, the dry castable is mixed first, then added and stirred evenly, and then steel fiber is added for stirring. Such stirring will not cause the steel fiber to bend and deform due to repeated stirring. If it is vibration molding, an attached vibrator must be used instead of an inserted vibrator for construction. Otherwise, the even distribution of steel fibers will be destroyed.

Application of Steel Fiber Castable

 
Steel fiber wear-resistant castables are mainly used to solve the problems under which working conditions? Generally used in kiln linings with operating environments such as mechanical abrasion, mechanical impact, material erosion, and material impact. That is to say, one of the properties of wear-resistant castables that must coexist in addition to wear is resistance to mechanical shock. Therefore, on the basis of wear-resistant castable, steel fiber wear-resistant castable has appeared.
 
Steel fiber reinforced refractory castables are mostly used to construct industrial kiln linings that are in contact with high-temperature gases or solid materials. Because in the case of discontinuous use, temperature fluctuations, thermal stress and mechanical stress are large. Steel fiber castable can improve its thermal shock and mechanical shock.
 
Steel fiber wear-resistant castables are commonly used in the lining of forging furnaces, heating furnaces, circulating fluidized bed boilers, metallurgical furnaces, annealing furnaces, etc. according to their special properties.
 

Rongsheng refractory castable manufacturer

 
Rongsheng's advanced and fully automatic unshaped refractory castable production line has an annual output of 80,000 tons. Steel fiber refractory castable, as a wear-resistant refractory castable, is a refractory lining material widely used in severely worn parts. In addition, we also provide a variety of unshaped refractory materials, such as silicon carbide refractory castables, wear-resistant refractory plastics, corundum castables, corundum mullite castables, etc. If your thermal equipment needs to replace the refractory lining and obtain the ex-factory price of the refractory castable, please contact us. We will provide you with services according to your specific needs.

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