PL447429A1 - Hardening liquid for cold working of steel - Google Patents

Abstract

The application concerns a quenching liquid for cold working of steel, which contains 79.0% - 93.5% (m/m) of wax - modified jojoba oil, with a kinematic viscosity at 40°C of 20.5 - 26.5 mm2/s and a pour point from -5°C to 3°C, which is characterized by a distillation range such that not more than 5% V/V distils up to 395°C and not less than 95% V/V distils up to 590°C, and contains two packages of refining additives in the amount of: a) 0.5% - 5.6% (m/m) of a package of refining additives containing, calculated on the total mass of this package, 10% - 25% (m/m) of bis(nonylphenyl)amine and 1% - 5% (m/m) of calcium salts (C10-C47)-alkyl-aryl derivatives of benzenesulfonic acids derived from petroleum and 0.1% - 0.25% (m/m) diphenylamine and 0.01% - 0.25% (m/m) branched dodecylphenol, dissolved in mineral base oil, the content of which in the package is from 20% to 50% (m/m), b) 1.6% - 8.5% (m/m) of a package of improvers containing, calculated on the total weight of this package, a mixture of 70% (m/m) hydrocarbon resins with 30% (m/m) non-aromatic hydrocarbons obtained from vacuum residue after distillation of crude oil or by separating raffinate - oil in the process of deasphalting of vacuum residue, and additionally contains 3 improvers with different functions, in amounts of: c) 1.2% - 5.0% (m/m) of an antioxidant additive containing 50% - 100% (m/m) of branched bis(nonylphenyl)amine and 0.25% - 1% (m/m) of diphenylamine, d) 1.0% - 4.3% (m/m) of an ash-free dispersant, of the mono- and/or bis-polybutenesuccinimide type, with a base number of not more than 18 mg KOH/g and a viscosity at 100°C of not more than 330 mm2/s, e) 0.6% - 3.5% (m/m) of a viscosity modifier - a polymer of esters of acrylic acid and methacrylic acid with aliphatic alcohols (C1 — C18), dissolved in mineral base oil and with a viscosity of the entire mixture at 100°C of not less than 660 mm2/s and not higher than 980 mm2/s.