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ASM Handbook

Induction Heating and Heat Treatment

Edited by
Valery Rudnev
Valery Rudnev
Inductoheat Inc.
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George E. Totten
George E. Totten
Portland State University
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ASM International
Volume
4C
ISBN electronic:
978-1-62708-167-2
Publication date:
2014
Book Chapter

Process Control, Monitoring, Design and Quality Assurance

Published:
2014

Abstract

The basic elements of control design are safety, process control, process verification, machine control, productivity, repeatability, and ease of setup. Effective systems of quality control/quality assurance are essential for heat treating practices. This article provides information on process control modes, as well as on process signatures of some items that require control, monitoring, verifying, and logging methods. It provides information on programmable logic controllers that have become efficient in machine control and monitoring. The article describes possible noise issues, National Electric Code clearance requirements, monitoring requirements, and machine accuracy that need to be considered when designing induction equipment.

Abstract

This article provides an overview of the basic theory of infrared (IR), including emissivity and E slope. It explains how the IR thermometer works, and provides guidance on choosing a thermometer, in particular, deciding between a two-color and a single-wavelength thermometer and installing and maintaining them. The article discusses typical applications of induction heating, and describes how the IR thermometer controls the temperature. While the majority of the article discusses spot thermometers, thermal imagers, which are fast and are used for both research and control of the induction process, are also addressed.

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2014. "Process Control, Monitoring, Design and Quality Assurance", Induction Heating and Heat Treatment, Valery Rudnev, George E. Totten

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