US513163A - Method of making steel castings - Google Patents
Method of making steel castings Download PDFInfo
- Publication number
- US513163A US513163A US513163DA US513163A US 513163 A US513163 A US 513163A US 513163D A US513163D A US 513163DA US 513163 A US513163 A US 513163A
- Authority
- US
- United States
- Prior art keywords
- iron
- steel
- white cast
- properties
- making steel
- 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
- 229910000831 Steel Inorganic materials 0.000 title description 13
- 239000010959 steel Substances 0.000 title description 13
- 238000005266 casting Methods 0.000 title description 8
- 238000004519 manufacturing process Methods 0.000 title description 5
- 229910001037 White iron Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
- C21D5/04—Heat treatments of cast-iron of white cast-iron
- C21D5/06—Malleabilising
- C21D5/08—Malleabilising with oxidation of carbon
- C21D5/10—Malleabilising with oxidation of carbon in gaseous agents
Definitions
- This invention relates to a novel method of making castings having the properties of steel.
- white cast-iron may be converted into a metal having the properties of steel, by subjecting the said metal to the direct action of a decarbonizmg flame, produced by the combustion of a hydrocarbon, preferably crude petroleum oil.
- the white cast-lron is subjected to the decarbonizing effect of the flame, produced by the combust on of petroleum oil, a sufficient length of time to convert the same in whole or in part, into a metal having the properties of steel, and in pract1ce,I have found that this result may be effected in from four to six hours, the time also depending on the heat of the convert ng-chamber or furnace in which the casting is placed.
- my invention may be readily chilled rim or tread before treatment with the hydrocarbon flame was of a laminated structure with the laminations extending toward the center of the Wheel; was very hard and brittle and not capable of being turned or drilled, and contained 2.09 per cent. of carbon, while another piece of the same chilled rim or tread, after treatment with the hydrocarbon flame as above described, had its laminated structure entirely changed into a tough, tenacious, fibrous structure of great strength, capable of being turned and drilled, and contained 1.97 per cent. of carbon. The precise reason why the hydrocarbon flame acts in this peculiar manner upon white cast iron is unknown to me.
- casting I desire to include any shape, form or size of structure or article.
- the casting may be composed entirely of white cast-iron or it may be composed inpart of white cast iron and gray iron and in this latter case, the white cast-iron portion may be converted into steel.
- the gist of this invention resides in the fact, that white cast-iron, no matter how produced, may be converted into a metal having the properties and characteristics of steel, as above described.
- I claim' 1 An improved method of making a metal having the properties of steel, which consists in subjecting white cast-iron to the direct action of a decarbonizing flame, produced by the combustion of a hydro-carbon, substantially as described.
- An improved method of making a metal having the properties of steel which consists in subjecting white cast-iron to the direct action of the products of combustion of crude petroleum oil, substantially as described.
- An improved method of making castings having the properties of steel which consists in subjecting the white cast-iron portion of a cast-iron casting to the direct action of the products of combustion of a hydrocarbon, substantially as described.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Description
UNITED STATES PATENT OFFICE.
NATHAN wASHspp or BOSTON, MASSACHUSETTS.
METHCgD OF MAKING STEEL CASTINGS.
SPECIFICATION formingpart of Letters Patent No. 513,163, dated January 23, 1894.
Application filed January 28, 1893- Serial No. 460,032. (No specimens.)
T0 at? whom it may concern.-
Be t known that I, NATHAN WASHBURN, residing 1n Boston, county of Suffolk and State of Massachusetts, have invented an Improvement n Methods of Making Steel Castings, of which the following description is a specification.
This invention relates to a novel method of making castings having the properties of steel. By experiment, I have ascertained that white cast-iron, may be converted into a metal having the properties of steel, by subjecting the said metal to the direct action of a decarbonizmg flame, produced by the combustion of a hydrocarbon, preferably crude petroleum oil.
In accordance with my invention, the white cast-lron is subjected to the decarbonizing effect of the flame, produced by the combust on of petroleum oil, a sufficient length of time to convert the same in whole or in part, into a metal having the properties of steel, and in pract1ce,I have found that this result may be effected in from four to six hours, the time also depending on the heat of the convert ng-chamber or furnace in which the casting is placed. The physical appearance of the white cast-iron is completely changed by the conversion, and that which before treatment 1s very brittle and possesses little strength, is converted into a tough, tenacious and fibrous structure of great strength capable of being finished with a tool or otherwise and capable of being turned and drilled as readily as any hammered or rolled steel now commonly made. Another peculiar feature of the metal having the properties of steel. thus produced, is that the said metal is capa ble of taking a high polish, which is unaf fected by atmospheric changes, and remains clean, smooth and of high polish even when 1(imposed to moisture for a substantially long ime.
In order that my invention may be readily chilled rim or tread before treatment with the hydrocarbon flame was of a laminated structure with the laminations extending toward the center of the Wheel; was very hard and brittle and not capable of being turned or drilled, and contained 2.09 per cent. of carbon, while another piece of the same chilled rim or tread, after treatment with the hydrocarbon flame as above described, had its laminated structure entirely changed into a tough, tenacious, fibrous structure of great strength, capable of being turned and drilled, and contained 1.97 per cent. of carbon. The precise reason why the hydrocarbon flame acts in this peculiar manner upon white cast iron is unknown to me.
By the term casting, I desire to include any shape, form or size of structure or article.- The casting may be composed entirely of white cast-iron or it may be composed inpart of white cast iron and gray iron and in this latter case, the white cast-iron portion may be converted into steel.
The gist of this invention resides in the fact, that white cast-iron, no matter how produced, may be converted into a metal having the properties and characteristics of steel, as above described.
I claim' 1. An improved method of making a metal having the properties of steel, which consists in subjecting white cast-iron to the direct action of a decarbonizing flame, produced by the combustion of a hydro-carbon, substantially as described.
2. An improved method of making a metal having the properties of steel, which consists in subjecting white cast-iron to the direct action of the products of combustion of crude petroleum oil, substantially as described.
3. An improved method of making castings having the properties of steel, which consists in subjecting the white cast-iron portion of a cast-iron casting to the direct action of the products of combustion of a hydrocarbon, substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
NATHAN WASHBURN.
Witnesses:
J AS. H. CHURoHILL,
J. MURPHY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US513163A true US513163A (en) | 1894-01-23 |
Family
ID=2581980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US513163D Expired - Lifetime US513163A (en) | Method of making steel castings |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US513163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2435946A (en) * | 1942-02-27 | 1948-02-10 | Birlec Ltd | Process for decarburizing austenitic manganese cast iron |
-
0
- US US513163D patent/US513163A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2435946A (en) * | 1942-02-27 | 1948-02-10 | Birlec Ltd | Process for decarburizing austenitic manganese cast iron |
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