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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:水淬介质及其在金属基淬火中的使用
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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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