Improvements in or relating to the Manufacture of Cast Steel.
Year: 1892

page_text: Date of Application, 19th May, 1992-Accepted, 25th June, 1892
COMPLETE SPECIFICATION.
Improvements in or relating to the Manufacture of Cast Steel.
We, JULES EUGENE FILASSIER of 136 Boulevard Magenta, Paris in the
Republic of France, Architect, and JEAN FAURE of 196 Rue Saint Martin Paris
in the Republic of France Gentleman do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention has for its object to provide an industrial and economical process
for the manufacture of cast steel by fusing, in a crucible, steel scrap, waste of
various kinds, scrap iron, or a combination of these substances, in presence of
magnetic iron ore containing titanium.
We employ preferably plumbago crucibles, but fireclay crucibles may also be
made use of, coated with a carbonaceous substance, or merely containing a suitable
proportion of pulverised wood charcoal.
The substances which are treated in this process may be obtained commercially
at a low price. They consist of scrap steel, chippings from castings, pieces of
springs or rails, worn out tools, etcetera, etcetera. Any kinds of iron may also be
employed.
According to the quality and the object of the steel which it is desired to obtain,
we make suitable mixtures of various sorts of steel serving as raw material, and we
add, or not, scrap iron.
The iron ore, which we introduce in the manufacture, is a magnetic ore, containing
a certain proportion of titanium, and is generally in the form of a black powder; if
this is not the case, it is pulverised before being used.
The relative proportions of metal and ore may, of course, be varied within certain
limits according to the result required. For example, we may take, say, a mixture
of 20 parts scrap steel with one part of magnetic ore, which yields cast steel of
excellent quality.
This mixture, when placed in a crucible, is melted in a steel furnace heated with
coke or gas, in which the operation proceeds in the usual manner.
We are able, by this process, to obtain, in a practical manner and at a very low
price, cast steel, which is equal to that of the best brands and which may be
employed for any purposes, such as various kinds of tools, castings, bars, sheets,
etcetera, etretera.
Cast steel manufactured according to this process will, we believe, supply every
requisite as regards tenacity and great resistance, and besides it is almost equal in
quality to fine steels at present known, whilst the cost of its manufacture is much
lower.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The improvements in or relating to the manufacture of cast steel, which consist
essentially in melting, preferably in a crucible, a mixture of given proportions of
magnetic iron ore containing titanium and scrap or waste steel with or without the
addition of iron, substantially as hereinbefore described.
Dated this 18th day of May 1892.
WM. P. THOMISON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants.