Si-Al-Ba-Ca Alloy

Ferro Silicon Aluminum Barium Calcium is a versatile composite deoxidizer, desulfurizer, and alloy additive. It combines the advantages of silicon, aluminum, barium, and calcium, delivering exceptional performance in molten steel purification, inclusion morphology control, and alloying. It is a key material for producing clean steel and high-quality special steels.

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Product Introduction

Introduction

	Si	Ca	Ba	Al	Mn	C	P	S
Fe16Ba9Ca12Si30	≥30.0	≥12.0	≥9.0	≥16.0	≤0.40	≤0.40	≤0.04	≤0.02
Fe12Ba9Ca9Si35	≥35.0	≥9.0	≥9.0	≥12.0	≤0.40	≤0.40	≤0.04	≤0.02
Fe8Ba12Ca6Si40	≥40.0	≥6.0	≥12.0	≥8.0	≤0.40	≤0.40	≤0.04	≤0.02

Production Process

Produced by the electrosilicothermic method: precisely proportioned raw materials including silica, bauxite, barite, and limestone are mixed and smelted at high temperatures in a submerged arc furnace. The molten alloy is cast, cooled, and crushed into standard sizes (10-50mm), with strict quality control throughout the process.

Key Features

Deep Purification: Powerful deoxidation and desulfurization capabilities significantly reduce oxygen and sulfur content.

Inclusion Modification: Transforms harmful inclusions (e.g., Al₂O₃) into low-melting-point, spherical calcium aluminates that are easy to float and remove.

High Alloy Yield: Barium improves the stability and utilization of calcium, leading to better alloying effects.

Enhanced Mechanical Properties: Remarkably improves comprehensive properties like impact toughness and fatigue strength.

Applications

High-Quality Steelmaking: Ideal for grades like pipeline steel, bearing steel, and gear steel, which demand ultra-high fatigue strength and purity. It effectively modifies inclusions, enhancing toughness and service life.

Secondary Steel Refining: Used in LF, CAS-OB, and other refining processes for deep deoxidation/desulfurization and precise composition control.

Cast Iron Inoculation: Acts as a highly efficient inoculant, significantly improving graphite morphology and increasing the strength and uniformity of iron castings.

FAQ

Q: What improvements does it offer compared to silicon aluminum barium?

A: The addition of calcium enables not only deep deoxidation but also effective inclusion morphology control, making it particularly suitable for steel grades requiring extremely high cleanliness.

Q: What is the main function of calcium?

A: Calcium transforms high-melting-point Al₂O₃ inclusions into low-melting-point compounds like 12CaO·7Al₂O₃, significantly improving steel cleanliness.

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Si-Al-Ba Alloy

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