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Induction Hardening of Gears and Critical Components, Part 2 (.pdf)
e. Heating Concepts. P u ls in g D u a l. F r e q u e n c y. There are four popular heating concepts used for the. C o n c e p t. ( P D F C ). induction spin hardening of gears that employ encircling-type. C ). coils (Fig. 11): the conventional single-frequency (CSFC),. pulsing single-frequency
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Single-Coil Dual-Frequency Induction Hardening of Gears (.pdf)
-- Conventional dual-frequency induction hardening. companies have pursued this. frequency techniques. However, depending. using a single inductor (top) and two inductors (bottom). idea, and different names and ab-. on tooth geometry, the time delay between. The first factor
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Quenching and Tempering
(iron carbide) phase in an iron ferrite matrix. Tempered martensite or tempered steel is the product of a conventional hardening process. The martensite transformation is a diffusionless reaction that proceeds rapidly (at the speed of sound) as a shear wave through the material. Careful control
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Innovative Induction Heating Technologies (.pdf)
microstructural properties as compared to. conventional crankshaft induction hardening processes utilizing "U"-shaped coils. These. include the noticeable reduction of grain growth, decarburization and oxidation of the pin/main. surface. The hardened zone is clearly defined and "crisp" (Figure 4) without
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Metallurgy makes or breaks tube fittings
The best tube fittings balance hardness, strength, and corrosion resistance. Parker Hannifin's Suparcase ferrule-hardening process does not require the high temperatures and long durations of more-conventional case-hardening procedures that, in turn, lower stainless steel's corrosion resistance
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Iron-Based Superalloys
subjected to sliding contact. Oxidation resistance increases with chromium content. The martensitic chromium steels, particularly alloy 616, are used for steam-turbine blades. The superalloys are available in all conventional mill forms -- billet, bar, sheet, and forgings -- and special shapes
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Electrohydraulic Controls Boost Thermal Drilling
Melting holes is sometimes a better option than drilling them. Thermal drilling relies on friction from a carbide bit to melt and extrude metal and form a hole. The process leaves a thicker lip around the edges of holes than with conventional drilling, providing more metal for stronger welds
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Let The Chips Fly
Copper-rich alternatives to conventional AISI austenitic stainless steels sport similar mechanical and corrosion properties but are much easier to machine. Ugine Stainless & Alloys Inc. Regulator-adjustment screw made from 304Cu stainless steel is used in the soda industry to regulate soda pressure