Sherardising is a process of galvanization of ferrous metal surfaces, also called vapour galvanising and dry galvanizing. The process is named after British metallurgist Sherard Osborn Cowper-Coles (son of naval inventor Cowper Phipps Coles) who invented and patented the method c. 1900. This process involves heating the steel parts up to c. 500 °C in a closed rotating drum that contains metallic zinc dust and possibly an inert filler, such as sand. At temperatures above 300 °C, zinc evaporates and diffuses into the steel substrate forming diffusion bonded Zn-Fe-phases.
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| - Sherardisieren (de)
- Seireardú (ga)
- Sherardizzazione (it)
- Diffusieverzinken (nl)
- Sherardising (en)
- Термодиффузионное цинковое покрытие (ru)
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| - Sherardisieren, Sherard-Verzinkung oder auch Diffusions-Verzinken, ist ein Verzinkungs-Verfahren, um Zink-Eisen-Schichten auf eisenhaltigen Werkstücken zu bilden. Wie beim mechanischen Plattieren nach DIN EN ISO 12683 werden hierbei metallische Überzüge mit Zinkstaub hergestellt. Das Sherardisieren dient hauptsächlich dem Korrosionsschutz oder als Haftvermittler. Benannt ist es nach dem Entwickler Sherard Cowper-Coles, welcher dieses Verfahren um 1900 in England erfand, er selbst hat dieses Verfahren „Vapour galvanizing“ (Dampfverzinken) genannt. Einige Hersteller nennen es auch Zink-Thermodiffusion, mit der Thermodiffusion hat das Sherardisieren allerdings nichts zu tun. (de)
- Próiseas chun cruach a chosaint ar chreimeadh, ainmnithe as a cheapadóir Sasanach Sherard Cowper-Coles (1866-1935). Téitear an réad cruach i bpúdar mín since go dtí teocht atá rud beag faoi bhun leáphointe na since. Cruthaítear malgam ar an dromchla ionas gur sinc íon ciseal seachtrach an réada, ag céimniú chuig cóimhiotal iarainn/since, greamaithe leis an gcruach. Is dromchla an-fhrithchreimthe é seo, an-oiriúnach i gcomhair péinteála. (ga)
- La sherardizzazione è un trattamento termochimico diffusivo dello zinco che deriva il nome da Sherard Osborn Cowper-Coles. (it)
- Diffusieverzinken of sherardiseren is het aanbrengen van een zinklaag door het tezamen verhitten van producten en zinkpoeder in een oven ter bescherming tegen corrosie. (nl)
- Покрытия термодиффузионные цинковые (ТДЦ) (ru)
- Sherardising is a process of galvanization of ferrous metal surfaces, also called vapour galvanising and dry galvanizing. The process is named after British metallurgist Sherard Osborn Cowper-Coles (son of naval inventor Cowper Phipps Coles) who invented and patented the method c. 1900. This process involves heating the steel parts up to c. 500 °C in a closed rotating drum that contains metallic zinc dust and possibly an inert filler, such as sand. At temperatures above 300 °C, zinc evaporates and diffuses into the steel substrate forming diffusion bonded Zn-Fe-phases. (en)
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| - Sherardisieren, Sherard-Verzinkung oder auch Diffusions-Verzinken, ist ein Verzinkungs-Verfahren, um Zink-Eisen-Schichten auf eisenhaltigen Werkstücken zu bilden. Wie beim mechanischen Plattieren nach DIN EN ISO 12683 werden hierbei metallische Überzüge mit Zinkstaub hergestellt. Das Sherardisieren dient hauptsächlich dem Korrosionsschutz oder als Haftvermittler. Benannt ist es nach dem Entwickler Sherard Cowper-Coles, welcher dieses Verfahren um 1900 in England erfand, er selbst hat dieses Verfahren „Vapour galvanizing“ (Dampfverzinken) genannt. Einige Hersteller nennen es auch Zink-Thermodiffusion, mit der Thermodiffusion hat das Sherardisieren allerdings nichts zu tun. (de)
- Próiseas chun cruach a chosaint ar chreimeadh, ainmnithe as a cheapadóir Sasanach Sherard Cowper-Coles (1866-1935). Téitear an réad cruach i bpúdar mín since go dtí teocht atá rud beag faoi bhun leáphointe na since. Cruthaítear malgam ar an dromchla ionas gur sinc íon ciseal seachtrach an réada, ag céimniú chuig cóimhiotal iarainn/since, greamaithe leis an gcruach. Is dromchla an-fhrithchreimthe é seo, an-oiriúnach i gcomhair péinteála. (ga)
- Sherardising is a process of galvanization of ferrous metal surfaces, also called vapour galvanising and dry galvanizing. The process is named after British metallurgist Sherard Osborn Cowper-Coles (son of naval inventor Cowper Phipps Coles) who invented and patented the method c. 1900. This process involves heating the steel parts up to c. 500 °C in a closed rotating drum that contains metallic zinc dust and possibly an inert filler, such as sand. At temperatures above 300 °C, zinc evaporates and diffuses into the steel substrate forming diffusion bonded Zn-Fe-phases. Sherardising is ideal for small parts and parts that require coating of inner surfaces, such as batches of small items. Part size is limited by drum size. It is reported that pipes up to 6 m in length for the oil industry are sherardised. If the metal surface is free of scale or oxides, no pretreatment is needed. The process is hydrogen-free, hence hydrogen embrittlement is prevented. (en)
- La sherardizzazione è un trattamento termochimico diffusivo dello zinco che deriva il nome da Sherard Osborn Cowper-Coles. (it)
- Diffusieverzinken of sherardiseren is het aanbrengen van een zinklaag door het tezamen verhitten van producten en zinkpoeder in een oven ter bescherming tegen corrosie. (nl)
- Покрытия термодиффузионные цинковые (ТДЦ) (ru)
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