Stabilized lubricant composition for continuous casting processes
AssigneePROSIMET S.p.A
InventorsRiccardo Carli, Marco Alloni, Simone Casagrande
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Abstract
Described herein is a stabilized lubricant composition for use in steel casting, in particular in continuous casting processes. In particular, the lubricant composition for processes for producing steel by continuous casting includes a dispersion of a lubricant powder, for an ingot mold, in continuous casting, in an oily liquid means, and a stabilization additive, characterized in that it has the following shear thinning index values: RVT 0.1/1 1/10 10/100 100/1000 STI 3.0-7.5 2.0-6.5 1.0-3.0 0.5-2.0 wherein RVT is the ratio between two different shear speeds and STI is the shear thinning index corresponding to the RVT values.
Claims15
A lubricant composition for processes for producing steel by continuous casting, the lubricant composition comprising a dispersion of a lubricant powder for an ingot mold in continuous casting, in an oily liquid means, and a stabilization additive, wherein the lubricant composition has the following shear thinning index values:
- RVT
- 0.1/1
- 1/10
- 10/100
- 100/1000
- STI
- 3.0-7.5
- 2.0-6.5
- 1.0-3.0
- 0.5-2.0
- wherein RVT is the ratio between two different shear speeds and STI is the shear thinning index corresponding to said RVT values, wherein the stabilization additive is selected from:
- secondary or tertiary amines with C4-C18 chains;
- amides or imides with C4-C18 chains;
- esters of mono- or di- carboxylic acids with C4-C18 chains with alcohols or polyols with C4-C18 chains;
- mono- or poly-carboxylic acids with C4-C18 chains;
- Salts of one or more of the aforesaid compounds;
- and
- amino acids and peptides up to 10 amino acidic units.
Dependencies are inferred from the claim text.