Hardfacing


Hardfacing

Hardfacing is a metalworking process where harder or tougher material is applied to a base metal. It is welded to the base material, and is generally takes the form of specialized electrodes for arc welding or filler rod for oxyacetylene and TIG welding.

Hardfacing may be applied to a new part during its production, or it may be used to restore a worn-down surface.

Hardfacing by welding is a surfacing operation to extend the service life of industrial components, pre-emptively on new components, or as part of a maintenance programme. The result of significant savings in machine down time and production costs has meant that this process has been adopted across many industries such as Steel, Cement, Mining, Petrochemical, Power, Sugar cane and Food.

Extensive work in research has resulted in the development of a wide range of alloys and welding procedures. The optimum alloy selection is made considering the component service conditions and feedback of the service performance.

For each industrial application and wear phenomena, there is a welding wire to provide wear resistance.

See also

* Case hardening

References

* http://www.welding-advisers.com/Hardfacing.html
* Welding Alloys Group- Hardfacing catalog


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Look at other dictionaries:

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  • hardfacing — Смотри Наварка …   Энциклопедический словарь по металлургии

  • Hardfacing alloys — Hardfacing alloys. См. Сплавы для покрытий. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Покрытие поверхности более твердым металлом — Hardfacing Покрытие поверхности более твердым металлом. Нанесение жесткого износостойкого материала на поверхность изделия путем наплавки, напыления или близких методов сварки, чтобы предотвратить износ или потерю свойств материала в результате… …   Словарь металлургических терминов

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  • Наварка — [hardfacing] 1. Изготовление рабочего слоя пода сталеплавильной печи спеканием слоев сыпучих огнеупорных материалов с добавлением технологического шлака. 2. Нанесение слоя металла на поверхность изделия посредством электрода и сварочного аппарата …   Энциклопедический словарь по металлургии

  • Stellite — alloy is a range of cobalt chromium alloys designed for wear resistance. It may also contain tungsten and a small but important amount of carbon. It is a trademarked name of the Deloro Stellite Company and was invented by Elwood Haynes [… …   Wikipedia

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