Carbide-based hardfacing
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United States of America Patent
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Mar 16, 2021
Grant Date -
Nov 23, 2017
app pub date -
Nov 6, 2015
filing date -
Nov 7, 2014
priority date (Note) -
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Abstract
One aspect of the disclosure provides an iron-based hardfacing layer which includes hard or wear resistant phases resulting at least in part from dissolution of silicon and/or boron carbide particles into a liquid iron-based metal during the fabrication process. In an embodiment, the hardfacing layer is formed by a fusion welding process in which carbide particles are added to the molten weld pool. In an example, the filler metal supplied to the welding process is a mild steel. In an embodiment, the hardness as measured at the surface of the hardfacing ranges from 40 to 65 HRC. In an example, the iron-based hardfacing layer also includes tungsten carbide particles.
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