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It is particularly suitable for strengthening large gears that cannot be carburized.
In Figure 2, the cross-sectional surface by SEM is presented for carburized specimen, where three distinct regions with different microstructures can be recognized.
This is attributed to the increase in hardness, which made the carburized component relatively brittle when compared to the sintered component.
The material of pin specimens is carburized 18CrNi4A, and the plate made of nontreated 32Cr3MoVA (number 3 couple) possesses higher wear coefficient about 7.62 x [10.sup.-7] [kPa.sup.-1] after 120 min testing.
Carburized parts with inhomogeneous structure are distinguished by the wide variety of micro-constituents and their properties through the all carburized layer.
Three rectangular stainless steel plate boxes were fabricated to accommodate each of the steel samples and carburized. A calculated amount of each carburizer was weighed into each of the stainless steel boxes and 20 wt % of BaC03 was mixed with each of them.
Slide members and ball retainers are made of cold rolled steel with carburized steel ball bearings.
* A carburized inner ring designed to absorb shock and resist cracking.
Among the topics are measuring residual stresses in surface treated stainless steel groove welds, evaluating arc evaporated coatings on rounded surfaces and sharp edged, residual stresses in dissimilar weld joints, the experimental analysis of shot peening on carburized for carbonitrided parts, measuring stress in aluminum using a Gobel mirror as the primary beam optics for an X-ray diffractometer, the thermal fatigue study of hardfaced hot forging tools using numerical analysis and residual stress evaluation, and investigating residual stress distribution in wheel rims using neutron diffraction.
If fully employed to replace heat treating in net-shape gear processing for carburized steels, TMP would save 36.7 TBtu/year.
The volume's 15 chapters address component design, overview of the mechanisms of failure in heat treated steel components, mechanisms and causes of failure in heat treated steel parts, general aspects of failure analysis, failure in steel forging, failures from the casting process, sources of failures in carburized and carbonitrided components, fatigue fracture of nitrided layers, steel heat treatment failures due to quenching, steel failures due to tempering and isothermal heat treatment, failure analysis in tool steels, case studies of steel components failures in aerospace applications, failure analysis of powder metal steel components, induction hardening, and failure analysis of steel welds.
Carburized gears are said to enable this company to increase a gear's torque capacity.
The pulley is a self-contained drive unit with an internal, high efficiency, NEMA inverter duty motor and an internal set of Class 10 carburized and ground gearing.
The model SN2169 is a heavy-duty, foot-mounted highspeed reduction gear which are helical, carburized and precision ground gears for increased strength and vibration-free, quiet operation, the company said.
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- Carburization Process for Scrap
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