Ca-Si Cored Wires

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Product Introduction

Product Description

Calcium Silicate Cored Wire is a high-efficiency feeding line product used in steelmaking. It consists of a precise ratio of silicon-calcium alloy powder encased and compacted within a thin steel strip. This product enables accurate delivery of alloying elements deep into the molten steel, facilitating efficient deoxidation, desulfurization, and control of non-metallic inclusion morphology.

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Production Process

Raw Material Preparation:Calcium ferroalloy is crushed and ground into fine, uniformly-sized powder.

Strip Forming:A cold-rolled steel strip is shaped into a "U" form by a forming machine.

Filling & Sealing:The alloy powder is precisely filled into the "U" channel, which is then tightly sealed into a wire via rollers.

Coiling & Packaging:The finished wire is coiled onto spools and packaged with moisture-proof materials to ensure quality.

Features

Precise Addition: Enables accurate control of dosage and immersion depth for standardized processing.

High Yield: The steel jacket protects the calcium, increasing its yield by 2-3 times compared to direct alloy addition.

Stable Reaction: Minimizes splashing for safer operations and more consistent results.

Flexible Composition: The powder composition inside the wire can be customized.

Applications

Steel Calcium Treatment: Widely used in secondary refining stations like LF and RH furnaces for deep deoxidation, desulfurization, and inclusion modification to enhance steel cleanliness.

Inclusion Morphology Control: Transforms high-melting-point inclusions like Al₂O3 into low-melting-point calcium aluminates for easy removal, significantly improving steel toughness and fatigue strength.

Improved Calcium Yield: Effectively prevents calcium vaporization, ensuring its full functionality in the molten steel.

FAQ

Q: What is the main advantage over adding solid CaSi alloy?

A: The key advantages are high yield and stable treatment effects. The wire delivers calcium deep into the melt, preventing oxidation and vaporization, and avoids the violent reaction associated with adding solid alloy.

Q: How to select the proper wire diameter and length?

A: Selection depends on ladle capacity, refining time, and target calcium content. Common diameters include 9mm and 13mm. Our technical team can provide calculations and recommendations.

Q: Q: What are the product specifications?

A: A: Common diameters include 9mm, 13mm, with coil lengths of 2500-3000 meters. Customization is available.