Editing Cementation process (section)

{{Short description|Obsolete steel-making process}}
{{Distinguish|Cementation (metallurgy)|Carburizing}}
[[File:Four cementation anglais.jpg|thumb|200px|Cementation furnace]]
The '''cementation process''' is an [[Obsolescence|obsolete]] [[technology]] for making [[steel]] by [[carburization]] of [[iron]].  Unlike modern [[steelmaking]], it increased the amount of [[carbon]] in the iron.  It was apparently developed before the 17th century. [[Derwentcote  Steel Furnace]], built in 1720, is the earliest surviving example of a cementation furnace. Another example in the UK is the [[Cementation furnace, Sheffield|cementation furnace in Doncaster Street, Sheffield]].