IndustrialHeating March 2011 : Page 5March 2011 • Vol. LXXIX • No. 3 CONTENTS 37 Heat Treating On the Cover: An operator is shown loading parts into a 25-bar HPGQ SECO/WARWICK furnace. Furnaces such as this are used for hardening with gas or high-pressure quench, vacuum pre-nitriding and low-pressure (LPC) vacuum carburizing. See the article on page 43. ARTICLES Applying High-Temperature Heat-Pipe Technology to Precision Heat Treating and Materials Processing Peter Dussinger – Advanced Cooling Technologies; Lancaster, Pa. High-temperature heat pipes can be used to build heat-treating and materials-processing furnaces that are capable of extraordinarily precise temperature setpoints and isothermality. Vacuum/Surface Treating 43 New Capabilities in HPGQ Vacuum Furnaces M. Korecki and J. Olejnik – SECO/WARWICK; Swiebodzin, POLAND J. Kula – Technical University of Lodz; Lodz, POLAND HPGQ vacuum furnaces are commonly used for heat treating high-, medium-and low-alloy steel tools, HSLA steel products and for individual applications of low-pressure (vacuum) carburizing (LPC) technology. Process Control & Instrumentation 51 FEA TURE Carbon Controlling with O 2 -Probe and L-Probe ' – MESA Electronic GmbH; Leitenstr., Geretsried, GERMANY D. Mikulovic Gas carburizing still plays an important role in heat treatment. Temperature and carbon potential (C-potential) of the atmosphere are the key process-control parameters. In this article, the essential differences in oxygen-probe construction will be discussed as well as their advantages and disadvantages. 54 Heat & Corrosion Resistant Alloys/Composites Maintenance for Cooling Towers: Protecting Process-Cooling Systems from Costly “Fatigue” Tom Ryder – Delta Cooling Towers; Rockaway, N.J. If your cooling tower and related equipment are not in good physical shape, there could be a terrible price to pay in loss of process effi ciency, damage to downstream equipment and loss of production. IndustrialHeating.com -March 2011 5 Publication List Using a screen reader? Click Here |
