Intensive Quenching Systems: Engineering and Design

Abstract

Description This comprehensive new manual focuses on highly-forced heat transfer—the Intensive Quenching (IQ) processes, with particular attention to the replacement of relatively expensive alloyed steels with less expensive carbon steels. 13 comprehensive chapters examine: With this unique manual, you are can address the following problems: This unique manual is intended for metallurgists and mechanical engineers to assist them in their work to design quenching systems and to implement those mechanical systems. It is also for student and post graduate students.

New Ways of Designing Super Strong Materials Based on Use of Alloyed Low Hardenability Steels

“…Thus, the superficial layer acts like a blacksmith: under conditions of high stress, the plates of martensite arise explosively, deforming the austenite and creating extremely high dislocation densities, which are frozen during rapid cooling. This process is analogous to low-temperature thermo-mechanical treatment (LTMT) [12].…”

“…The Reynolds number Re is related to the speed of the quenchant at the beginning of the outlet from a nozzle, and the Prandtl number Pr characterizes physical properties of the quenchant. The dimensionless equation of similarity ( (2)) is valid within the boundaries of the following values and given parameters [12,19,20] …”

“…The history of intensive quenching starts in 1960 when it was shown that intensively quenched low hardenability steels provide considerably higher service life of machine components as compared with the alloy steel quenched slowly in oil [7][8][9][10][11]. Within the period of time 1960 and nowadays numerous important investigations were fulfilled which showed the great benefits of intensive quenching [12]. By now, there are great achievements in material strengthening, which by now are successfully implemented by some American steel companies.…”

“…By now, there are great achievements in material strengthening, which by now are successfully implemented by some American steel companies. Moreover, IQ processes were applied to relatively small steel components which were quenched in water flow and only a few considered such opportunity for large steel component like big rollers or rotors which cannot be quenched in directed water flow known as "single part quenching" [12]. In this paper, the new patented in Ukraine alloyed low hardenability steel and technology of cooling are discussed.…”

Mechanical and Metallurgical Evaluation of Carburized, Conventionally and Intensively Quenched Steels

“…The intensive quenching process is timed to yield optimal as-quenched martensitic case depths. When conducted properly, intensive quenching is capable of producing optimum compressive stresses and case depths which are typically greater than those achievable by carburizing (Ref [2][3][4][5].…”