The Manufacture of a New Alloy.
Year: 1898

page_text: The Manufacture of a New Alloy.
I, REINHARD ISIDORE ROMAN, of 31. Lombard Street, in the City of London,
Metallurgical Chemist, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the manufacture of a new alloy which consists of
copper, nickel, wolfram, and aluminium. According to this invention copper
forms the chief constituent of the alloy, but the nickel, wolfram and aluminium
for a substantial per centage. In carrying out this invention I take from 56 to
60 parts of copper and incorporate therewith the desired amount of nickel,
wolfram and aluminium.
The amount of nickel varies from 29 to 40 per cent., the wolfram from 1 to
3 per cent., and the aluminium from 12 to 10 per cent. As an example my
improved alloy may consist of the four metals in the following proportions :-
Copper
Nickel
Wolfram
Aluminium
60 parts by weight.
29 parts by weight.
1 part by weight.
10 parts by weight.
-
The copper and the nickel are first melted together in a crucible under a cover
of powdered cryolite. When the bath is entirely liquid the wolfram metal
wrapped up in aluminium cartridges is introduced into the heat and pushed
under the surface of the molten metal. A considerable reaction takes place which
raises the heat considerably so that the metal begins to boil. As soon as this
boiling is over the metal is stirred up and skimmed and then shot into cold
water. The shot is dried and then remelted with a flux composed of one per
cent. of pulverised borax and one and a half per cent, of pulverised fluor calcium.
When the bath is entirely liquid, well stirred up and skimmed, the crucible is
taken out of the fire and the required quantity of aluminium added, then it is
stirred and skimmed again and poured out into chill ingot moulds. These ingots
are remelted and finally cast in the required forms either in sand or chill
moulds. The metal so made is white or silvery in colour and can easily be forged,
rolled and stamped, at a bright red heat. It has a high tensile strength,
alloy is not liable to rust or corrode and will be found particularly useful as an
anti-friction metal. When the metal is cast in chills, forged and drawn the
tensile strength is naturally higher and according to the work on them reaches
100 to 108 tons per square inch, having still an elongation of 10-11 % in 4 inches.
Dated this 19th day of March 1898.
The
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London,
Chartered Patent Agents.

page_text: I, REINHARD ISIDORE ROMAN, of 31. Lombard Street, in the City of London,
Metallurgical Chemist, do hereby declare the nature of the said 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 the manufacture of a new alloy which consists of 5
copper, nickel, wolfram and aluminium. According to this invention copper
forms the chief constituent of the alloy, but the nickel, wolfram and aluminium
form a substantial percentage. In carrying out this invention I take from 56 to
60 parts of copper and incorporate therewith the desired amount of nickel,
wolfram and aluminium.
The amount of nickel varies from 29 to 40 per cent., the wolfram from 1 to
3 per cent., and the aluminium from 1.2 to 10 per cent. As an example my
improved alloy may consist of the four metals in the following proportions:-
Copper
Nickel
Wolfram
Aluminium
60 parts by weight.
29 parts by weight.
1 part by weight.
10 parts by weight.
The copper and the nickel are first melted together in a crucible under a cover
of powdered cryolite. When the bath is entirely liquid the wolfram metal
wrapped up in aluminium cartridges may be introduced into the heat and pushed
under the surface of the molten metal. A considerable reaction takes place which
raises the heat considerably so that the metal begins to boil. As soon as this
boiling is over the metal is stirred up and skimmed and then shot into cold
water. The shot is dried and then remelted with a flux composed of one per
cent. of pulverised borax and 1 per cent. of pulverised fluor calcium.
When the bath is entirely liquid, well stirred up and skimmed, the crucible is
taken out of the fire and the required quantity of aluminium added, then it is
stirred and skimmed again and poured out into chill ingot moulds.. These ingots
are remelted and finally cast in the required forms either in sand or in chill
moulds.
In practice I prefer, after first producing the alloy of copper and nickel, to
remelt this alloy and then add the aluminium, to again remelt, and finally add
the wolfram metal. All the separate melts should be cast into ingots and the
different metals must be well alloyed in order to produce a good result.
The principal condition to be observed in order to ensure success is to avoid
overheating the metal. The heat must be kept throughout from beginning to
end at an even temperature.
I prefer to employ graphite crucibles lined with magnesia or alumina, but
plumbago crucibles can be used without seriously injuring the metal, provided
that the melt is not overheated.
1
1
2
3
3
4
The metal produced according to this invention is white or silvery in color and
can easily be forged, rolled and stamped at a bright red heat. It has a high
tensile strength. The alloy is not liable to rust or corrode, and will be found
particularly useful as an antifriction metal. When the metal is cast in chills,
forged and drawn, the tensile strength is naturally higher and according to the 4
work on them reaches 100 to 108 tons per square inch, having still an elongation
of 1-3.5 % in 4 inches.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
The improved alloy of copper, nickel, wolfram and aluminium, produced by
combining the said metals substantially in the proportions and in the manner
herein before described.
1090.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London,
Chartered Patent Agents.