Nitrided track pin for track chain assembly of machine

Abstract

A track pin (80, 180) for a track chain assembly (16) includes a body (120, 220) made from a steel alloy. The steel alloy has a composition comprising iron, a nitride-forming element, and silicon. Thecomposition of the steel alloy comprises at least 0.5 percent by weight of silicon. The body (120, 220) includes an external nitrided surface (125, 225).

Description

technical field [0001] The present patent disclosure relates generally to a track chain assembly for a track-type machine, and more particularly, to a track pin for the track chain assembly of the machine. Background technique [0002] Tracked machinery is widely used in construction, mining, forestry and other similar industries. The undercarriage of this track-type machine utilizes track assemblies rather than wheels to provide ground-engaging propulsion. Such track assemblies may be preferred in environments where sufficient traction cannot be produced, such as those often found in the industries mentioned above. Specifically, rather than rolling on a working surface on wheels, track-type machines utilize one or more track assemblies including endless rings coupling the track links that define an outer surface and an inner surface that supports the ground Engaging the track shoes, the inner surface travels around one or more rotatable track engaging elements such as dri...

AI Technical Summary

Problems solved by technology

However, nitriding requires high processing temperatures (over 500°C), which cause most steels to lose their strength

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