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US 2026/0176546 A1Published application
Hybrid lubricant composition for steelmaking
OwnerYoen Chan KOOinventor
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Abstract
Disclosed are a hybrid lubricant composition a hybrid lubricant composition for steelmaking process, which has improved durability, etc., so as to be suitable for a continuous casting machine operating at a high temperature under high load during a steelmaking process, and a method of preparing the same.
Claims12
A hybrid lubricant composition for steelmaking, comprising, based on a total weight of the lubricant composition, (i) 14 to 37 wt % of a mixed thickener comprising a polyurea-based thickener and a calcium sulfonate-based thickener;
- (ii) 62 to 85 wt % of a base oil;
- and (iii) 0.3 to 2 wt % of a zinc-based compound as an additive,
- wherein a weight ratio of the polyurea-based thickener to the calcium sulfonate-based thickener in the mixed thickener is adjusted in a range of greater than 1:1 to 3:1, and
- the calcium sulfonate-based thickener comprises calcium sulfonate having a total base number (TBN) of 200 to 500, and further comprises 10 to 50 wt % of calcium carbonate in form of calcite based on a weight of the calcium sulfonate-based thickener.
1 more element
Dependencies are inferred from the claim text.