US7260A - Process for making cast-steel - Google Patents
Process for making cast-steel Download PDFInfo
- Publication number
- US7260A US7260A US7260DA US7260A US 7260 A US7260 A US 7260A US 7260D A US7260D A US 7260DA US 7260 A US7260 A US 7260A
- Authority
- US
- United States
- Prior art keywords
- steel
- iron
- cast
- pig
- plates
- 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
Links
- 238000000034 method Methods 0.000 title description 20
- 229910001208 Crucible steel Inorganic materials 0.000 title description 12
- 229910000805 Pig iron Inorganic materials 0.000 description 22
- 229910000499 pig iron Inorganic materials 0.000 description 22
- 229910001018 Cast iron Inorganic materials 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000002844 melting Methods 0.000 description 4
- 229910001296 Malleable iron Inorganic materials 0.000 description 2
- 241000282898 Sus scrofa Species 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
Definitions
- the mode of procedure which I have practiced with success is to cast the pig-iron in thin plates of about half an inch in thickness, which plates 1 then pile in an oven such as is used in making blistered steel, interposing between such plates pulverized oxide of iron in strata about equal in thickness to the plates of pig-iron.
- the oven is .then closed and heated.
- For an oven containing about ten tons of pig-iron I apply the heat for about ten days, taking care not to raise the heat so high as to melt the oxide of iron, but sufficiently intense to keep the plates of pig or cast iron The operator will be able at a cherry-red heat. to ascertain when this process has sufficiently progressed by the taking out a plate and observing if the granular formation has been changed, and by hammering to see if it has assumed the character of whatis called malleable cast-iron.
- the lenglh of time during which the first part of the process is to be continued must depend in a great measure on the thickness of the plates of cast-iron and the quality of steel desired to be produced.
- Thet-hickerthe plates 7 the greater the length of time required, and with a given thickness of plates the longer they are heated the softer will be the steel.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Steel (AREA)
- Compounds Of Iron (AREA)
Description
PATENT OFFICE.
JOSEPH DIXON, OF JERSEY CITY, NEW JERSEY.
PROCESS FOR MAKING CAST-STEEL.
Specification forming part of Letters Patent No. 7,260, dated April 9, 1850.
To all whom it may concern Be it known that I, JUSEPH DIXON, ot' Jersey City. in the county of Hudson and State of New Jersey, have invented a new and Improved Method or Process of Manufacturing Steel; and 1 dohereby declare that the follow- .ingis a full, clear, and exactdescription of the principle or character which distinguishes my invention from all other things before known, and of the manner of using the same.
By my improved process I make cast-steel directly from the pig or cast iron, and thus avoid the laborious and expensive processheretofore and now universally practiced of first converting the pig or cast iron into wroughtiron.
The nature of my invention in the process of making cast-steel directly from pig or cast iron consists in partly decarbouizing the pigiron by cementation in an oven with pulverized oxide of iron, and then melting the partly d'ecarbonized pig or cast iron in crucibles.
The mode of procedure which I have practiced with success is to cast the pig-iron in thin plates of about half an inch in thickness, which plates 1 then pile in an oven such as is used in making blistered steel, interposing between such plates pulverized oxide of iron in strata about equal in thickness to the plates of pig-iron. The oven is .then closed and heated. For an oven containing about ten tons of pig-iron I apply the heat for about ten days, taking care not to raise the heat so high as to melt the oxide of iron, but sufficiently intense to keep the plates of pig or cast iron The operator will be able at a cherry-red heat. to ascertain when this process has sufficiently progressed by the taking out a plate and observing if the granular formation has been changed, and by hammering to see if it has assumed the character of whatis called malleable cast-iron.
Alter the plates of pig-iron have by the above process been sufficiently decarbonized they are taken outof the men and broken up and melted in crucibles in the same manner as in making cast-steel from blistered steel.
The lenglh of time during which the first part of the process is to be continued must depend in a great measure on the thickness of the plates of cast-iron and the quality of steel desired to be produced. Thet-hickerthe plates 7 the greater the length of time required, and with a given thickness of plates the longer they are heated the softer will be the steel.
WVhat I claim as my invention, and desire to secure by Letters Patentin the above process of making cast-steel, is-- Partly decarbonizing pig or cast iron in an oven stratified with pulverized oxide of iron, substantially as described, and then melting such decarbonized pig or. cast iron in crucibles, substantially as described.
JOS. DIXON.
' Witnesses:
JOHN W. QUINCY, ALnxR. PORTER BROWNE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US7260A true US7260A (en) | 1850-04-09 |
Family
ID=2067567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US7260D Expired - Lifetime US7260A (en) | Process for making cast-steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US7260A (en) |
-
0
- US US7260D patent/US7260A/en not_active Expired - Lifetime
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