Iron scale

the thin film which forms on the surface of wrought iron in the process of forging. It consists essentially of the magnetic oxide of iron, Fe3O4.

See also: Iron

References in periodicals archive ?
A key factor of iron sulfide scales is that they are oil wetting (oleophillic) and when even low concentrations of liquid hydrocarbon are present in the water then a mixture of iron scale and hydrocarbon scale results (Wylde and Duthie, 2008).
Due to significant environmental threats incurred by the classical technology (caused by the neutralization of acid solutions, chemical prickling generating fluid wastes of used acid HCl or H2SO4) and the increasing demands for cold drawn bars (most cold drawing plants in Romania were closed exactly due to this obsolete technology) we have developed an ecological technology for bar drawing, where the removal of iron scales is achieved using bead blasting.