Process for the Production of Metals and Metallic Alloys Containing Carbon and Silicon.
Year: 1895

page_text: Date of Application, 1st Feb., 1895
Complete Specification Left, 30th Nov., 1895-Accepted, 4th Jan.,
1896
PROVISIONAL SPECIFICATION.
Process for the Production of Metals and Metallic Alloys Containing
Carbon and Silicon.
1-
I, WILHELM KAUFMANN, of No. 26 Henwaagplatz, Prague, Bohemia, do
hereby declare the nature of this invention to be as follows:--
This invention relates to a process for the simultaneous introduction of carbon
and silicon into metals and metallic alloys for the purpose of obtaining metals
having peculiar properties, or behaving in a peculiar manner in smelting, casting
and other operations, as also, by such increase of their percentage of carbon and
silicon, to render them more suitable for hardening processes, such as, in the case
of iron and steel, to render them more suitable for the Bessemer and Thomas
processes.
In carrying out the said process the compound of silicon and carbon known
as carborundum is made use of, which compound consists of a mixture of
carbonaceous material with quartz, silica or alumina, under the influence of high
temperature, which is advantageously produced by means of the electric current.
As shewn by experiments, carborundum has the property of dissolving at a
suitably high temperature in, and combining with molten metals, such as, in
particular, in molten iron and cast steel, in copper, tin, zinc, lead, nickel and cobalt,
also in alloys of iron, copper and the other metals named with each other, as also
with bismuth, antimony, aluminium, silver &c., thereby producing products having
a certain percentage of carbon and silicon.
The properties of these products as also their behaviour in melting, casting
and farther treatment, become essentially different from those of the metals
and their alloys.
pure
In carrying out the process the carborundum is added to the molten metals
or alloys at a high temperature in a more or less finely divided state, the proportions
varying according to the nature of the metal or alloy treated, and according to the
result desired to be obtained.
The intimate admixture of the dissolved carborundum with the metals or alloys
so as to effect a uniform distribution of the carbou and silicon throughout the metal
or alloy, can be effected by any suitable known means.
Dated this 1st day of February 1895.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Process for the Production of Metals and Metallic Alloys Containing
Carbon and Silicon.
1, WILHELM KAUFMANN of No. 26 Heuwaagplatz, Prague, Bohemia, 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 relates to a process for the simultaneous introduction of carbon

page_text: "
and silicon into metals and metallic alloys for the purpose of obtaining metals having
peculiar properties, or behaving in a peculiar manner in smelting, casting and other
operations, as also, by such increase of their percentage of carbon and silicon, to
render them more suitable for hardening processes, such as, in the case of iron and
steel, to render them more suitable for the Bessemer and Thomas processes.
In carrying out the said process the compound of silicon and carbon known as
carborundum is made use of, which compound consists of a mixture of carbonaceous
material with quartz, silica or alumina, under the influence of high temperature,
which is advantageously produced by means of the electric current.
As shewn by experiments, carborundum has the property of dissolving at a
suitably high temperature in, and combining with molten metals, such as, in
particular, in molten iron and cast steel, in copper, tin, zinc, lead, nickel and cobalt,
also in alloys of iron, copper and the other metals named, with each other, as also
with bismuth, antimony, aluminium, silver &c., thereby producing products having
a certain percentage of carbon and silicon.
The properties of these products as also their behaviour in melting, casting and
farther treatment, become essentially different from those of the pure metals and
their alloys.
In carrying out the process the carborundum is added to the molten metals or
alloys at a high temperature in a more or less finely divided state, the proportions
varying according to the nature of the metal or alloy treated, and according to the
result desired to be obtained.
The intimate admixture of the dissolved carborundum with the metals or alloys
so as to effect a uniform distribution of the carbon and silicon throughout the metal
or alloy, can be effected by any suitable known means.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Process for the production of metals and metallic alloys containing carbon and
silicon consisting in the dissolving and mixing of carborundum (a silicon-carbon
compound) in the molten metals or alloys at a suitably high temperature,
substantially as described.
Dated this 26th day of November 1895.
ABEL & IMRAY,
Agents for the Applicant.