Abstract
1. In the spray method of quenching a new quenchant consisting of an 8–12% aqueous solution of triethanol amine and a 0.2–0.8% aqueous solution of polyvinyl alcohol (triethanol amine-polyvinyl alcohol aqueous solutions) in quenching capacity occupies an intermediate place between an oil spray and a water bath but closer to an oil spray. 2. By changing the polyvinyl alcohol concentration it is possible to regulate within wide limits the quenching capacity of triethanol amine-polyvinyl alcohol aqueous solutions for the purpose of providing high-quality hardening of parts of any shape of different steels from straight carbon to multialloy ones. 3. Triethanol amine-polyvinyl alcohol aqueous solutions possess high technical and service reliability, are inexpensive and safe in operation, and may be recommended for hardening practically any parts in various branches of industry.
Published Version
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