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Induction Hardening Applications [.pdf format]

SHarP-C - Advanced Non-rotational Crankshaft Induction hardening and Tempering Technology

Authors: Don L. Loveless, Valery I. Rudnev, LAL, GCD, HM
Publication: Heat Treatment of Metals
Date: 1/1/2001

The authors introduce a new system for induction heat treating crankshafts in which, unlike conventional processing, the crankshaft is not rotated. In a comparison with the operation of traditional induction hardening machines, they outline the technical benefits of the new stationary approach, being more cost-effective, energy efficient and space-saving technology.

Advanced Non-Rotational Induction Crankshaft Hardening Technology Introduced to Automotive Industry

Authors: Don L. Loveless, Valery I. Rudnev, LAL, GCD, HM
Publication: Industrial Heating
Date: 11/1/2000

A revolutionary new induction heating system is being introduced to the automotive industry for the heat treatment of crankshafts. This technology involves heat treating the crankshaft journals using stationary inductors rather than the cumbersome methods of conventional crankshaft hardening processes. In conventional methods, the inductors must follow the offset rotation of the connecting rod journals, requiring the movement of massive induction fixtures as the crankshaft rotates. In the method described here, both the crankshaft and inductors remain stationary, resulting in improved hardness patterns and a significant reduction in floor space requirements for the equipment.

Gear Heat Treatment by Induction

Authors: Valery Rudnev, Don L. Loveless, Brian L. Marshal
Publication: Proc. of 20th ASM Heat Treating Conference, St. Louis, October, 2000
Date: 10/1/2000

This presentation is based on materials published in Gear Technology Magazine ("Gear heat treatment by induction", March, 2000). At the same time, there are some additional information regarding to features of "gap-by-gap" induction hardening of gears, induction tempering of gears, as well as some other aspects of this technology.

Shops Warm Up to Induction Heat Treating

Authors: Valery Rudnev, Ray L. Cook, Don L. Loveless, Micah R. Black, John Powell
Publication: American Machinist
Date: 6/1/2000

Many end users are taking advantage of induction hardening and tempering to improve part strength and wear resistance. This article discusses some subtle features of heat treatment by induction, including surface hardening, case depth requirements, through-hardening and induction tempering.

Induction Hardening Basics for Iron and Steel

Authors: Valery Rudnev, Ray L. Cook, Don L. Loveless, Micah R. Black
Publication: Modern Application News
Date: 6/1/2000

There are many ways to heat-treat metal parts, including the use of electric and gas-fired furnaces, fluidizing bed furnaces, and infra-red and induction furnaces. Each method has its own advantages and drawbacks. This article discusses features in metal heat treatment by induction, including surface hardening and through-hardening, case depth requirements, iron and steel selection, induction super-hardening phenomenon and transistorized power supplies.

Gear Heat Treating by Induction

Authors: Valery Rudnev, Don L. Loveless, Brian L. Marshal, K. Schepeljakovskii, Norm P. Dyer, Micah R. Black
Publication: Gear Technology
Date: 3/1/2000

The induction hardening and tempering of gears and critical components is traditionally a hot subject in heat treating. In recent years, gear manufacturers have increased their knowledge in this technology for quality gears. External spur and helical gears, bevel and worm gears, internal gears, racks and sprockets are among the parts that often undergo heat treating by induction. This article discusses a variety of hardening patterns, features of "tooth-by-tooth"/"gap-by-gap" hardening techniques as well as application of encircle coils using different heat modes - Conventional Single Frequency Concept (CSFC), Pulsing Single Frequency Concept (PSFC), Pulsing Dual Frequency Concept (PDFC), etc. Several case studies are also provided in this article.

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