Class-Leading Safety Factor

RBSiC Rollers for Calcination of Cathode Active Materials (CAM)

For decades, Schunk Technical Ceramics has been setting industrial standards with kiln furniture made of silicon-infiltrated, reaction-bonded silicon carbide (RBSiC). Combining class-leading material properties, our RBSIC rollers ensure outstanding long-term quality performance in the calcination of cathode active materials such as NCM, NCA and NCMA for lithium-ion batteries.

Cathode Active Materials

Rollers with class leading safety factor

CarSIK-Z Rollers made of the grade RBSiC distinguish oneself for the Calcination of Cathode-Active Materials (CAM) due to an almost unique combination of Material- and Product properties and warrant for our customers in combination with tailormade customer specific design-engineered solutions a high degree of economy and safety in operation.

Apart from the superior material properties an excellent true running characteristics of the Rollers in operation allows a reduction of the lateral movement of the Saggers and their premature failures in operation resulting in optimized product-lifetimes of kiln furniture as well as reduced overall maintenance costs.

Your advantages

Class- Leading Safety Factor (due to superior microstructure and highest bending strength and creep-resistance among currently all commercially available RBSiC/SiSiC grades)
Tight TIR specification (incl. high degree of uniformity)
Gastight material for outstanding oxidation resistance up to 1,380 °C
Excellent thermal shock resistance
Excellent chemical resistance (withstanding aggressive kiln atmospheres)
Variable diameter and wall-thickness up to a max. length of 4,200 mm

Products | CAM

Rollers

Operational safety

Class-leading safety factor due to unrivaled microstructure

Schunk's RBSiC grade sets itself apart from other commercially available materials by its notably low free silicon (Si) content. This feature leads to a high density of approximately 3.09 g/cm³ in the two-phase RBSiC material, significantly enhancing its bending strength and creep resistance. As a result, this grade achieves the highest performance levels among all available SiSiC/RBSiC grades.

High Safety Factor

Correlation of bending strength in a two phase RBSiC/SiSiC material

The below comparison visualizes the differences in microstructure between Schunk's superior RBSiC vs. commercially available grades os SiSiC with a lower density.

CarSIK-Z [RBSiC] Schunk

Stronger secondary-SiC bond in between the primary SiC-grains
Higher density = lower content of free Si
Higher bending strength up to +40 % vs. commercially available grades
Higher creep resistance (stability of shape under load without rotation of rollers)

Dark Phase: SiC | Light Phase: free Si

Commercially available SiSiC

Less secondary-SiC bond in between the primary SiC-grains
Lower density = higher content of free Si
Reduced bending strength and creep resistance

Dark Phase: SiC | Light Phase: free Si

Comparison

Fractured Stress of RBSiC/SiSiC Rollers

The diagram visualizes a schematic comparison of commercially available RBSiC/SiSiC grades in correlation to different SiC/Si (free) ratios and their effects on the fracture stresses measured on real products (e.g. rollers, beams). Schunk's superior RBSiC grade for Rollers ensure a Class-Leading Safety Factor due to its lowest content of free Si and a superior microstructure resulting in the highest bending strenghts.

Brochure: RBSiC Rollers

for Calcination of Cathode Active Materials (CAM)

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Brochure: RBSiC Rollers (interactive)

for Calcination of Cathode Active Materials (CAM)

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