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Induction Heating of Billets, Bars, Rods, Wires, Slabs, Plates, Strips, Etc. [.pdf format]

Tips for Computer Modeling of Induction Heating Processes, Part 2

Author: Valery Rudnev
Publication: Forge Magazine
Date: 10/1/2011

Many of the bars, billets or rods being manufactured today lend them selves to processes in which it is required to hot form only a certain part of the workpiece, for example its end. Article discusses specifics of computer modeling of end heating applications and critical tips executives must know regarding computer simulation of induction heating processes prior to metal's warm and hot forming.

Tips for Computer Modeling of Induction Heating Process

Author: Valery Rudnev
Publication: Forge Magazine
Date: 7/1/2011

Certain numerical computational methods or software are preferred for each family of induction heating applications. There is not a single universal computational method that optimally fits all types of applications. In recent years, the finite element method (FEA) became the dominant numerical simulation tool for a variety of engineering applications. Though FEA is a very effective modeling technique, it is not the ultimate computational tool for all induction heating applications. In some cases a combination of alternative methods is more effective. Article provides a short comparison of different computer modeling techniques used to simulate induction heating processes. Case study of computer modeling of FluxManager Technology is provided here as well.

Intricacies of Computer Simulation of Induction Heating Processes

Author: Valery Rudnev
Publication: Proceedings of the 28th Forging Industry Technical Conference, Schaumburg, IL
Date: 4/5/2011 - 4/7/2011

In the last decade, when discussing subjects related to a computer simulation of induction heating, the word "usefulness" has been replaced by a word "necessity". Combination of a sophisticated engineering background with advanced process simulation software that is capable to effectively model electromagnetic and thermal phenomena, induction heating professionals possess the unique ability to analyze, in few hours, complex technological problems. Computer modeling provides the ability to predict how different, interrelated and non-linear factors may impact the transitional and final thermal conditions and what must be accomplished to improve the effectiveness of the process, determine the most appropriate process recipes and serve as a comfort factor when designing new systems. Article discusses different aspects related to capabilities to computer model modern induction heating process, limitations of generalized commercial software, common incorrect assumptions, peculiarities when induction heating non-cylindrical workpieces, etc.

Ensuring the quality of inductively heated billets

Authors: Gary Doyon, Doug Brown, Valery Rudnev, Chester Van Tyne
Publication: Forge magazine
Date: 4/1/2010

There are many parameters to be considered in designing an induction billet/bar heating system to meet the needs of modern forge shops. Application experience and computer modeling capability are important tools in developing effective induction heating system and avoiding unpleasant surprises related to common incorrect assumptions. Some of those incorrect assumptions that affect the quality of heated billets and bars are discussed in this article.

Superior induction heating technologies for modern forge shops. (in Japanese)

Author: Doug Brown, Valery Rudnev, James Lin, Tomoko Nakagawa
Publication: Proceedings of Japanese Forging Association conference (JFA)
Date: 7/1/2009

Today's forge shop must quickly adjust to a rapidly changing business environment while satisfying continuously increasing demand for greater quality of forged parts and environmental friendliness of process equipment. Steel billets (including plain carbon, microalloyied and alloy steels), by far, represent the majority of hot-formed billets, although other materials including titanium, aluminum, copper, brass, bronze, and nickel are also induction heated for hot forming. Recent developments, common misassumptions, and innovative solutions in induction billet heating prior to hot forming are discussed here.

Question and Answer regarding induction heating large billets

Author: Valery Rudnev
Publication: Heat Treating Progress, Professor Induction Series
Date: 1/1/2009

In the Professor Induction article "How do I select inductors for billet heating?" (Heat Treating Progress, May/June 2008, p 19-21), you stated "- When heating large-diameter steel or titanium billets (8 to 12 in., or 200 to 300 mm, and larger), it is often advantageous to use static heating with a vertical coil arrangement" - What is the main reason you say that static vertical heating is good for billets over 200 mm in diameter and why do you set the limit over 200 mm? Is this related to the running cost, initial system cost, or other reasons?

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