IndustrialHeating April 2011 : Page 7April 2011 • Vol. LXXIX • No. 4 CONTENTS 43 Ceramics & Refractories/Insulation On the Cover: This photo by Jack Delano was taken in January 1940, about a decade after Industrial Heating began covering the industry. The shot helps to illustrate how far the magazine and our industry has come in eight decades. ARTICLES Insulating Firebrick – Maximizing Energy Savings Through Product Selection Andy Wynn – Morgan Thermal Ceramics UK Ltd; Bromborough, UNITED KINGDOM Massimiliano Marchetti and Ermanno Magni – Morgan Thermal Ceramics Italiana s.r.l.; Casalpusterlengo, ITALY Energy prices of recent years have increased the importance of maximizing energy savings in thermal-processing industries. To accomplish this, the equipment designer needs to know which IFB products provide the minimum energy losses. Heat Treating 49 Principles of Gas Nitriding: The Nitriding Process (Part 1) Daniel H. Herring – The HERRING GROUP, Inc.; Elmhurst, Ill. Nitriding is a case-hardening process in which nitrogen is introduced into the surface of a ferrous alloy such as steel by holding the metal at a temperature below that at which the crystal structure begins to transform to austenite on heating. In this article, we review the process. 55 Industrial Gases/Combustion FEA TURE The Ellingham Diagram: How to Use it in Heat-Treat-Process Atmosphere Troubleshooting Michael J. Stempo – Air Liquide International U.S. LP; Houston, Texas The Ellingham diagram is not always thought of as a heat-treater’s tool. This article explains its usefulness and demonstrates how to make use of it. 61 Materials Characterization & Testing Practical Applications of Computational Thermodynamics and Kinetics to Heat Treatment Paul Mason – Thermo-Calc Software Inc.; McMurray, Pa. Heat treating can best be defined as “the controlled application of time, temperature and atmosphere to produce a predictable change in the internal structure (i.e. the microstructure) of a material.” This article describes how computational thermodynamics and kinetics can assist the metallurgist in making such predictions. IndustrialHeating.com -April 2011 7 Publication List Using a screen reader? Click Here |
