US221996A - Improvement in malleable-iron castings - Google Patents
Improvement in malleable-iron castings Download PDFInfo
- Publication number
- US221996A US221996A US221996DA US221996A US 221996 A US221996 A US 221996A US 221996D A US221996D A US 221996DA US 221996 A US221996 A US 221996A
- Authority
- US
- United States
- Prior art keywords
- iron
- malleable
- improvement
- iron castings
- cast
- 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
- 229910001296 Malleable iron Inorganic materials 0.000 title description 22
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910000805 Pig iron Inorganic materials 0.000 description 6
- 229910000754 Wrought iron Inorganic materials 0.000 description 6
- 229910000499 pig iron Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 241000876852 Scorias Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003292 diminished Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Definitions
- This invention has for its object to reduce the time, labor, and expense of manufacturing malleable cast-iron, and to produce an improved malleable cast-iron, which may be distinguished from all other malleable cast-iron by its great density, which is nearly equal to that of hammered cast-steel, and by its tensile strength, which is about double that of the ordinary malleable cast-iron; and, further, by its ability to resist rust and receive a high polish, the facility with which it may be casehardened, and the absence of all tendency to become laminated or threaded or clawed up when being forged, like the ordinary malleable iron, during the operation of forging.
- the invention consists in an improved white-hearted malleable iron produced by mixing ordinary pig-iron and wrought-iron, either alone or in combination, with sprue, scoria, or dross, and fusing the same together i and subjecting the mass to the action of the atmosphere, as more fully hereinafter specified.
- the materials are properly mixed and placed in an ordinary reverberatory or other suitable furnace, and maintained in a state of fusion for a proper timeaboutone hour and a quarter for one tonand subjecting it in the meantime to the influence of the atmosphere, by which the carbon is burned out to a proper extent, the product being a fine-grained and very dense iron, which may be readily cast, and is particularly adapted to the manufacture of small articles, such as harness-mountings, buckles, carriage-wheel fenders, pistolframes, and the like, although it will answer equally well for larger articles.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Description
UNITED STATES PATENT OEEIcE.
JAMES E. ATWOOD, OF WORGESTER, MASSACHUSETTS.
IMPROVEMENT IN MALLEABLE-IRON CASTINGS.
Specification forming part of Letters Patent No. 221,996, dated November 25, 1879 application filed November 12, 1878.
To all whom "it may concern:
Be it known that I, James E. ATwoon, of the city of Worcester, in the county of VVorcester and State of Massachusetts, have invented a new and Improved Mixture of Irons for White-Hearted Malleable-Iron Castings, of which the following is a specification.
This invention has for its object to reduce the time, labor, and expense of manufacturing malleable cast-iron, and to produce an improved malleable cast-iron, which may be distinguished from all other malleable cast-iron by its great density, which is nearly equal to that of hammered cast-steel, and by its tensile strength, which is about double that of the ordinary malleable cast-iron; and, further, by its ability to resist rust and receive a high polish, the facility with which it may be casehardened, and the absence of all tendency to become laminated or threaded or clawed up when being forged, like the ordinary malleable iron, during the operation of forging.
Heretot'ore malleable cast-iron has been produced by decarbonizing, to a proper extent, ordinary cast-iron, involving a process requirin g much time and labor.
By my improved process the amount of time and labor necessary to produce the iron is greatly diminished and a superior iron is produced.
To this end the invention consists in an improved white-hearted malleable iron produced by mixing ordinary pig-iron and wrought-iron, either alone or in combination, with sprue, scoria, or dross, and fusing the same together i and subjecting the mass to the action of the atmosphere, as more fully hereinafter specified.
The proportions of these materials may be varied considerably, according to the particular purpose for which the resultant product is to be used but for general purposes I have found that equal parts of carburet or pig iron and decarbonized or wrought iron answer well in practice with one part of sprue to every two parts of decarbonized iron. The materials are properly mixed and placed in an ordinary reverberatory or other suitable furnace, and maintained in a state of fusion for a proper timeaboutone hour and a quarter for one tonand subjecting it in the meantime to the influence of the atmosphere, by which the carbon is burned out to a proper extent, the product being a fine-grained and very dense iron, which may be readily cast, and is particularly adapted to the manufacture of small articles, such as harness-mountings, buckles, carriage-wheel fenders, pistolframes, and the like, although it will answer equally well for larger articles.
I am aware that wrought-iron and pigiron have'been combined by fusion for the manufacture of steel, and this I do not claim; but
What I do claim is An article of manufacture consisting of a white-hearted malleable iron possessing the density of hammered steel and a tensile strength of about double that of the ordinary malleable iron, as set forth.
JAMES E. ATWOOD.
Witnesses:
A. T. MATTHEWS, WLLLIAM BUCKLEY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US221996A true US221996A (en) | 1879-11-25 |
Family
ID=2291392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US221996D Expired - Lifetime US221996A (en) | Improvement in malleable-iron castings |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US221996A (en) |
-
0
- US US221996D patent/US221996A/en not_active Expired - Lifetime
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