US981474A - Carbonizing steel. - Google Patents

Carbonizing steel. Download PDF

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Publication number
US981474A
US981474A US57847410A US1910578474A US981474A US 981474 A US981474 A US 981474A US 57847410 A US57847410 A US 57847410A US 1910578474 A US1910578474 A US 1910578474A US 981474 A US981474 A US 981474A
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Prior art keywords
steel
carbonizing
fused
carbon
carbonizing steel
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Expired - Lifetime
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US57847410A
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Hugh Rodman
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Rodman Chemical Co
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Rodman Chemical Co
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Priority to US57847410A priority Critical patent/US981474A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/40—Alloys based on alkali metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/66—Electroplating: Baths therefor from melts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • a cast iron anode as forexample the contalnmg pot, is ordinarily sat-isfactor but citizen of the United States, and a resident 1 other materials, such as graphite, may be of Pittsburg, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Carbonizing Steel, of which the following is a specification.
  • Hy invention relates to an improved and novel method of carbonizing steel.
  • Low carbon steel articles as for example, ball .races, are superficially carbonized by being immersed in a heated medium capable of surrendering carbon to the steel.
  • This medium may be solid, gaseous or liquid, for instance, bone charcoal, natural gas or fused cyanid, any of which at a minimum temperature of about 1500 F. will carbonize steel surfaces.
  • I may employ the cyanids or ferro-cyanids, alone or fused with other compounds.
  • cyanids or ferro-cyanids as examples of fused electrolytes, I may mention sodium carbonate. or sodium carbonate mixed with sodium chlorid, both of which I have successfully employed in carrying out my invention.
  • the rate of carbonizing varies with the current density, one half ampere per square inch of cathode surface is satisfactory, but higher rates may be used. In some cases,
  • T he method of carbonizing steel which consists in :making it an electrode and subject-ing it.
  • tiS the action of electrolysis in a carbon-containing bath.

Description

a TA T FTQ.
HUGH RODMAN, 0F PITTSBURG, PENNSYLVANIA, ASSIGNOR T0 RODMAN CHEMICAL COMPANY, A CORPORATION OF PENNSYLVANIA.
CARBONIZING STEEL.
No Drawing.
To all whom it may concern:
Be itknown that I, HUGH Ronsmx, a
Specification of Letters Patent.
Patented Jan. 10, 1am.
Application filed August 22, 1910. Serial No. 578,474.
A cast iron anode, as forexample the contalnmg pot, is ordinarily sat-isfactor but citizen of the United States, and a resident 1 other materials, such as graphite, may be of Pittsburg, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Carbonizing Steel, of which the following is a specification.
Hy invention relates to an improved and novel method of carbonizing steel.
Low carbon steel articles, as for example, ball .races, are superficially carbonized by being immersed in a heated medium capable of surrendering carbon to the steel. This medium may be solid, gaseous or liquid, for instance, bone charcoal, natural gas or fused cyanid, any of which at a minimum temperature of about 1500 F. will carbonize steel surfaces.
I have discovered that by making the steel cathode in a carbon-containing fused electrolyte, the rate of carbonization is increased; in fact, rapid electrolytic carbonizing is possible in a fused medium incapable of imparting carbon by simple contact.
As examples of fused electrolytes, I may employ the cyanids or ferro-cyanids, alone or fused with other compounds. As an example of a fused electrolyte inactive upon simple contact. I may mention sodium carbonate. or sodium carbonate mixed with sodium chlorid, both of which I have successfully employed in carrying out my invention.
The rate of carbonizing varies with the current density, one half ampere per square inch of cathode surface is satisfactory, but higher rates may be used. In some cases,
high rates must be avoided to prevent erosion of the cathode surface.
consists in making the steel cathode in a bath of fused sodium carbonate.
4. The method of carbonizing steel by making it an electrode in a fused carboncontaini-ng electrolyte.
T he method of carbonizing steel, which consists in :making it an electrode and subject-ing it. tiS "the action of electrolysis in a carbon-containing bath.
In testimony whereof, I shave hereunto subscribed my name this 18th day of August, 1910.
' HUGH RODMAN.
Witnesses:
C. \V. MGGHEE, E. V. McCALLIs'rER.
US57847410A 1910-08-22 1910-08-22 Carbonizing steel. Expired - Lifetime US981474A (en)

Priority Applications (1)

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US57847410A US981474A (en) 1910-08-22 1910-08-22 Carbonizing steel.

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US57847410A US981474A (en) 1910-08-22 1910-08-22 Carbonizing steel.

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US981474A true US981474A (en) 1911-01-10

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US57847410A Expired - Lifetime US981474A (en) 1910-08-22 1910-08-22 Carbonizing steel.

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