Posts by Valery Rudnev
Induction Heat Treatment Challenges in a Highly Digitized World
The technology of heat treating by means of electromagnetic induction is advancing at an accelerated rate, addressing new challenges and a rapidly changing business environment. The variety of parts gets larger while product cycle times get shorter. In…
Read MoreDr. Valery Rudnev: Induction Thoughts
Induction heating of steel billets: causes of billet sticking/fusing problem and its prevention Steel components by far represent the majority of hot-worked billets and bars for which electromagnetic induction is…
Read MoreEquipment Selection for Induction Hardening: Single-Shot Hardening – Part 3
Single-shot inductors can be successfully used for hardening not only components of classical cylinder geometries but other geometries as well. This includes workpieces of general conical shapes, such as elliptic,…
Read MoreTroubleshooting and Prevention of Cracking in Induction Hardening of Steels: Lessons Learned – Part 2
The final part of this two-part article continues a discussion on the subject of Induction Heating, providing additional troubleshooting tips and unveiling remedies to minimize a probability of cracking in…
Read MoreTroubleshooting and Prevention of Cracking in Induction Hardening of Steels: Lessons Learned – Part 1
For real-world needs, producers of IH equipment should have the experience and analysis necessary to help heat-treat practitioners with specific problems. Newly employed heat-treat engineers, designers, and practitioners may need…
Read MoreEquipment Selection for Induction Hardening: Single-Shot Hardening – Part 2
A conventional single-shot inductor consists of two legs and two crossover segments, also known as bridges, “horseshoes,” or half-loops [1]. The induced eddy currents under the legs primarily flow along…
Read MoreEquipment Selection for Induction Hardening: Single-Shot Hardening – Part 1
With the single-shot method, neither the workpiece (cylinder shaft, for example) nor the coil moves linearly relative to each other; the part typically rotates instead. The entire region that is…
Read MoreNorth American Forging is Advanced Manufacturing
(Part 3: Advanced Billet Heating Operations) Dr. Valery Rudnev – Inductoheat Inc., Madison Heights Mich.Jon D. Tirpal – SCRA Applied R&D, Charleston, S.C. In a modern forge, billet heating is…
Read MoreTaking the Crank Out of Crankshaft Hardening
Gary Doyon, Doug Brown, Valery Rudnev, Glen Desmier, Jeffrey Elinski Inductoheat, Inc., Madison Heights, Mich. Induction heat treatment is traditionally a popular choice for hardening and tempering of quality crankshafts.…
Read MoreThe day after tomorrow – the future of induction heating
by Valery Rudnev Today’s metal working and heat treating shops must quickly adjust to a rapidly changing business environment, maximizing process flexibility and energy efficiency, yet still satisfy continuously increasing…
Read MoreComputer Modeling of Induction Heating Processes – Part 2
Dr. Valery Rudnev, FASM – Inductoheat Inc., Madison Heights, Mich. Part 1 of this article covered the critical aspects of the computer modeling of induction heating processes. Common misassumptions were…
Read MoreTips for Computer Modeling Induction Heating Processes – Part 1
Dr. Valery Rudnev, FASM – Inductoheat Inc., Madison Heights, Mich. Computer modeling is no longer just a useful tool, it has become a necessity. Computer simulation provides the ability to…
Read MoreA fresh look at induction heating of tubular products: Part 1
The extensive use of metal tubing in thousands of products demands a wide range of process concepts. For example, in automotive manufacturing alone, new applications for tubing are being advanced…
Read MoreA fresh look at induction heating of tubular products: Part 2
Part 1 (May/June HTP, p. 17–19) discussed induction the major between induction heating of tubular products and solid cylinders, and reviewed several important applications of induction for heat treating and…
Read MoreIntricacies of Induction Heating of Wires, Rods, Ropes & Cables
Understanding induction heating for wire, rod, rope and cable applications, including annealing, hardening, tempering, coating and multi-wire processing.Induction heating provides manufacturers with a fast, controllable and energy-efficient method for heating…
Read MoreIntricacies for the successful induction heating of steels in modern forge shops
Dr. Valery Rudnev, Doug Brown, Dr. Chester J. Van Tyne, Dr. Kester D. Clarke Abstract Over the past three decades, induction heating has become an increasingly popular in forge shops.…
Read MoreSpecifics of induction hardening of powder metallurgy (P/M) components
During the last decade, the use of advanced powder metallurgy (P/M) materials in several industries has been expanded at an impressive pace further penetrating markets of demanding applications; however, the…
Read MoreImplications of induction hardening
One of the most common applications of induction heat treatment is the hardening of steels, cast irons, and powder metallurgy materials. Among other workpieces, such components as camshafts, crankshafts, gears,…
Read MoreSubtleties of induction heating of aluminum, magnesium and copper alloys
Steel components by far represent the majority of hot worked and heat-treated parts for which electromagnetic induction is used as a source of heat generation. At the same time, aluminum,…
Read MoreInduction heating of wires, cables and tubular products
By Dr. Valery Rudnev In the past four decades, heating by means of electromagnetic induction has become increasingly more popular. Growing environmental concerns in combination with the requirement of increasing…
Read MoreInduction Heating Serves Todays Forging Industry
Induction heating can offer benefits to forgers in certain applications. Process and design requirements for suitable applications are examined, as are common types of induction heating configurations. By Dr. Valery…
Read MoreInduction Heating and Heat Treating for Aerospace Applications
Induction heating is used to produce high quality, reliable aerospace components as well as unique combinations of engineering characteristics. By Dr. Valery Rudnev, FASM Electromagnetic induction is used for heating…
Read MoreInduction Gear Hardening: Part 1
The practice and science of modern induction heat-treating has advanced in many areas over the last decade, including computer modeling, power supplies, failure analysis, quality assurance, and more. By Dr.…
Read MoreInduction Heating: Everything you wanted to know but were afraid to ask. (part 2)
As a regular contributor to the HTPro Newsletter, Professor Induction answers a wide variety of questions regarding induction heating and heat treating. Valery Rudnev, FASM,* IFHTSE FellowInductoheat Inc., Madison Heights,…
Read MoreInduction Heating: Everything you wanted to know but were afraid to ask.
Induction heating is a multifaceted phenomenon composed of complex interactions involving electromagnetics, heat transfer, materials science, metallurgy, and circuit analysis-with applications across multiple industries.As a regular contributor to the HTPro…
Read MoreInduction Heating and Heat Treating of Fasteners
by: Justin Mortimer, Dr. Valery Rudnev and Andrew Bernhard Radyne Corp. An Inductotherm Group Company 211 W Boden St. Milwaukee, WI 53207 USA www.radyne.com In the past decade, heating by…
Read MoreInduction hardening of cast irons
The success in induction hardening of cast irons and repeatability of obtained results are greatly affected by a potential variation of matrix carbon content. By Dr. Valery Rudnev Steel components…
Read MoreInduction Gear Hardening: Part 2
The second in a two-part series, this installment addresses induction gear hardening by encircling the whole gear or sprocket with an induction coil, also known as ‘spin hardening.’ By Dr.…
Read MoreNew Technology Straightens Out Camshaft Distortion
Gary Doyon, Valery Rudnev, John Maher, Randy Minnick, Glen Desmier – Inductoheat Inc.; Madison Heights, Mich. Induction heat treatment is a common method for heat treating different automotive components, including…
Read MoreComputer Modeling of Induction Heating: Things to be Aware of, Things to Avoid
Dr. Valery Rudnev – Inductoheat, Inc.; Madison Heights, Mich. In the last decade, when discussing subjects related to a computer simulation of induction heating, the word “usefulness” has been replaced…
Read MoreHybrid Heating: Induction + Gas Furnace vs. Gas Furnace + Induction
Valery Rudnev – Inductoheat Inc.; Madison Heights, Mich Under certain circumstances, hybrid heating using both gas and induction furnaces can be desirable and cost-effective. The issue of whether to use…
Read MoreREVOLUTION—NOT EVOLUTION—NECESSARY TO ADVANCE INDUCTION HEAT TREATING
Modern, high quality equipment must be readily available and flexible enough to allow for easy retooling and reprogramming to process a variety of parts. Gary Doyon,* Valery Rudnev, FASM,* Collin…
Read MoreReader asks, ‘How do I select inductors for billet heating?
This month’s column features the answer to a question submitted by a Professor Induction reader. The “Systematic Analysis of Induction Coil Failures” series will continue in the next issue of…
Read MoreHow to Select Induction Scan Hardening Equipment: Vertical vs. Horizontal
Computer Modeling Single-Shot Induction Hardening Of A Power Transmission Shaft
Computer modeling is used in induction hardening process design to improve component quality including hardness, beneficial stress distributions, and reduced distortion. Zhichao (Charlie) Li* and B. Lynn Ferguson, FASM,* Dante…
Read MoreComputer Modeling Helps Prevent Failures of Heat Treated Components
Consider this scenario. Following the development stage, an induction hardening machine is built, completes a successful run-out, and is shipped to the customer. After a number of successful production runs,…
Read MoreComputer Modeling Helps Identify Induction Heating Misassumptions and Unknowns
Dr. Valery Rudnev – Inductoheat Inc.; Madison Heights, Mich. Whenever someone is discussing induction heating, reference is often made to the skin-effect phenomenon, which is a fundamental property of induction…
Read MoreCommon Mispostulation in Induction Surface Hardening
Induction Hardening of steels, cast irons, and P/M materials represents one of the most popular applications of induction heat treatment.
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