ألياف فولاذية مصبوبة

Description of Steel Fiber Castable

Steel Fiber Castable is made of dense bauxite as the main raw material, pure calcium aluminate cement as the bond, appropriately added in some silicon carbide, silica micro powder, expanding agent and additive.

It is a kind of castable made of fireproof aggregates, binding agents, additives and fireproof steel fiber of certain sizes (length: 20-35mm, sectional area: 0.13-0.2cm2).

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Kerui Steel Fiber Castable Technical Data Sheet

ألياف فولاذية مصبوبة		Normal-1	Normal-2	High Strength-1	High Strength-2
Al2O3, %, ≥	–	70	83	70	80
Bending Strength, MPa	110 ℃ x24h, ≥	9	9	10	12
	1300 ℃ x16h, ≥	5.5	6.5	10	12
Cold Crushing Strength, MPa	110 ℃ x24h, ≥	70	70	70	80
	1300 ℃ x16h, ≥	40	50	70	80
Bending Strength, MPa, ≥(1100 ℃ -room temp. for 5 times)	–	4.5	5.5	5	5
Linear Change after firing at 1100 ℃ , %	–	±0.4	±0.5	±0.4	±0.5

Advantages of Steel Fiber Castable

1.High Tensile Strength; 2.Good Thermal Shock Resistance; 3.Excellent Crack Resistance; 4.Strong Wear Resistance;

Construction Methods of Corundum Refractory Castable

Surface Treatment

Make sure the surface of the construction is clean, dry, smooth, and free from other pollutants

Mixing Castables

Mix multiple bags of castables according to the materials needed, and add a certain amount of water to adjust the humidity to meet the humidity requirements of construction

Stirring

Add the mixed castable and adhesive into the mixer, add water, and mix until the color is uniform, and the lumps can be caught by hand without leakage (completed within 30 minutes)

Vibration

The castable should also be poured with a plug-in vibrator or a flat vibrator, and the layer pouring height should not exceed 400mm. Castables applied by vibrating can help eliminate porosity and improve the compactness and strength of the lining.

Curing

The completed construction body should be naturally cured in a dry environment for 5-7 days at a temperature of 5-35℃. Avoid construction body vibration during maintenance.

Application of Corundum Refractory Castables

Steel fiber castables are widely used in industrial furnaces to enhance the lining’s toughness and prevent cracking under thermal shock. In power plants, they protect the inner walls of boilers. Additionally, in waste incineration plants, they withstand high – temperature and corrosive gas environments.