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Aqueous quenching media and use thereof in quenching metal substrates
Aqueous quenching media and use thereof in quenching metal substrates
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机译:水性淬火介质及其在淬火金属基材中的用途
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摘要
Aqueous media for quenching metal substrates are provided and contain (i) a polyvinylpyrrolidone/polyvinylcaprolactam copolymer and (ii) one or more of a second polymer, which is selected from (a) a substituted oxazoline polymer; (b) a poly(oxyethylene-oxyalkylene)glycol; or (c) a polyvinylpyrrolidone polymer. The quenching bath provides reduced cooling rates through the martensite temperature ranges. Also provided are processes for quenching metal substrates using these quenching media.
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