Chapter 1: Introduction to Gear Heat Treatment
Modern gears are made from a wide variety of materials. Of all these, steel has the outstanding characteristics of high strength per unit volume and low cost per pound. Although both plain carbon and alloy steels with equal hardness exhibit equal tensile strengths, alloy steels are preferred because of higher hardenability and the desired microstructures of the hardened case and core needed for the high fatigue strength of gears. This chapter provides an overview of the key considerations involved in the selection and application of heat treating processes for alloy steel gears and serves as an introduction to the subsequent chapters in this book.
Introduction to Gear Heat Treatment, Heat Treatment of Gears: A Practical Guide for Engineers, By A.K. Rakhit, ASM International, 2000, p 1–3, https://doi.org/10.31399/asm.tb.htgpge.t67320001
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