US661549A - Process of manufacturing steel. - Google Patents

Process of manufacturing steel. Download PDF

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Publication number
US661549A
US661549A US58240596A US1896582405A US661549A US 661549 A US661549 A US 661549A US 58240596 A US58240596 A US 58240596A US 1896582405 A US1896582405 A US 1896582405A US 661549 A US661549 A US 661549A
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US
United States
Prior art keywords
steel
carbid
manufacturing steel
making
addition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US58240596A
Inventor
Frank E Parks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CARNEGIE STEEL COMPANY Ltd
CARNEGIE STEEL Co Ltd
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CARNEGIE STEEL Co Ltd
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Application filed by CARNEGIE STEEL Co Ltd filed Critical CARNEGIE STEEL Co Ltd
Priority to US58240596A priority Critical patent/US661549A/en
Application granted granted Critical
Publication of US661549A publication Critical patent/US661549A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor

Definitions

  • FRANK E PARKS, OF HOMESTEAD, PENNSYLVANIA, ASSIGNOR TO THE CAR- NEGIE STEEL OGMPANY, LIMITED, OF PITTSBURG, PENNSYLVANIA.
  • the calcium carbid is cheap, it is easily added to the steel, and the results of the process in affording uniformity and homogeneity of product are such as to make my invention of very great value in the art.
  • the calcium carbid may be added thereto in the ladle or otherwise after its withdrawal from the furnace, converter, or crucible at the end of the refining operation, although I consider its addition in the mold to be the best. It Will be understood also that the steel may be treated by the addition of manganese and other agents as heretofore in making steel where calcium carbid is not used.
  • I claim--- 1 The process of making from steel, castings and ingots free from blow-holes, the same consisting in adding to the molten steel a carbid of an alkaline earth, when making castings and ingots from the steel, substantially as and for the purpose set forth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

in TE a'rn'r trier.
FRANK E. PARKS, OF HOMESTEAD, PENNSYLVANIA, ASSIGNOR TO THE CAR- NEGIE STEEL OGMPANY, LIMITED, OF PITTSBURG, PENNSYLVANIA.
PROCESS OF MANUFACTURING STEEL...
SPECIFICATION forming part of Letters Patent No. 661,549, dated November 13, 1900.
Application filed March 9, 1896. Serial No. 582,405. (No specimens.)
To all whom it out (ZOTLOGT/t Be it known that I, FRANK E. PARKS, of Homestead, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in the Manufacture of Steel, of which the following is a full, clear, and exact description.
I have discovered that important results in the manufacture of steel are obtained by adding to the steel at or after the end of the refining operation an addition of the compound of calcium and carbon,which is commercially known as calcipm carbid.
I will now proceed to describe my invention as I have hitherto practiced the same, premising that the claims of this specification are not limited thereto, but that modification may be made in the method in respect of the precise time at which the addition is made and in the proportion of the addition, and that, if desired, other compounds may be added to the steel with the calcium carbid either for the same purpose or for other purposes.
After the refining of the steel in a furnace or converter or in crucibles and at the time of casting the same into ingot-molds or into molds for making finished castings I add a small proportion of calcium carbid. I preferably add it in the form of a powder which may be inclosed in a small packet and thrown into the mold at the time of teeming the steel thereinto, though it may be added in the form of lumps or otherwise. I have obtained very excellent results by using the calcium carbid 5 in the proportion of about one-third of a pound to a ton of steel. When such addition is made, for example, to dead soft steel in hot and wild condition tapped from an openhearth furnace, in which condition it is most difficult to control in the mold, the steel is quieted and an ingot is produced having a solid top practically free from sponginess or p p g.
The calcium carbid is cheap, it is easily added to the steel, and the results of the process in affording uniformity and homogeneity of product are such as to make my invention of very great value in the art.
Instead of adding the calcium carbid to the steel in the mold it may be added thereto in the ladle or otherwise after its withdrawal from the furnace, converter, or crucible at the end of the refining operation, although I consider its addition in the mold to be the best. It Will be understood also that the steel may be treated by the addition of manganese and other agents as heretofore in making steel where calcium carbid is not used.
I claim--- 1. The process of making from steel, castings and ingots free from blow-holes, the same consisting in adding to the molten steel a carbid of an alkaline earth, when making castings and ingots from the steel, substantially as and for the purpose set forth.
2. The process of making from steel, castings and ingots free from blow-h oles, the same consisting in adding to the molten steel, calciu m carbid when making castings and ingots from the steel, substantially as and for the 7c purpose set forth.
In testimony whereof I have hereunto set my hand.
FRANK E. PARKS.
Witnesses:
THOMAS W. BAKEWELL, G. I. I-IoLnsrnP.
US58240596A 1896-03-09 1896-03-09 Process of manufacturing steel. Expired - Lifetime US661549A (en)

Priority Applications (1)

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US58240596A US661549A (en) 1896-03-09 1896-03-09 Process of manufacturing steel.

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US58240596A US661549A (en) 1896-03-09 1896-03-09 Process of manufacturing steel.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865735A (en) * 1956-08-24 1958-12-23 Knorr Bremse Gmbh Processes for reducing the sulphur content in iron and for economizing in coke in cupola furnaces
US2913788A (en) * 1953-05-18 1959-11-24 Kramig Anna Louise Method of casting ingots

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913788A (en) * 1953-05-18 1959-11-24 Kramig Anna Louise Method of casting ingots
US2865735A (en) * 1956-08-24 1958-12-23 Knorr Bremse Gmbh Processes for reducing the sulphur content in iron and for economizing in coke in cupola furnaces

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