US1499068A - Making gray iron - Google Patents
Making gray iron Download PDFInfo
- Publication number
- US1499068A US1499068A US535067A US53506722A US1499068A US 1499068 A US1499068 A US 1499068A US 535067 A US535067 A US 535067A US 53506722 A US53506722 A US 53506722A US 1499068 A US1499068 A US 1499068A
- Authority
- US
- United States
- Prior art keywords
- iron
- silicide
- gray iron
- gray
- white
- 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
- 229910001060 Gray iron Inorganic materials 0.000 title description 12
- 229910001037 White iron Inorganic materials 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910021332 silicide Inorganic materials 0.000 description 8
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 229910021346 calcium silicide Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WNQQFQRHFNVNSP-UHFFFAOYSA-N [Ca].[Fe] Chemical compound [Ca].[Fe] WNQQFQRHFNVNSP-UHFFFAOYSA-N 0.000 description 1
- -1 calcium silicide Chemical compound 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- OYFJQPXVCSSHAI-QFPUQLAESA-N enalapril maleate Chemical compound OC(=O)\C=C/C(O)=O.C([C@@H](C(=O)OCC)N[C@@H](C)C(=O)N1[C@@H](CCC1)C(O)=O)CC1=CC=CC=C1 OYFJQPXVCSSHAI-QFPUQLAESA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 229910021338 magnesium silicide Inorganic materials 0.000 description 1
- YTHCQFKNFVSQBC-UHFFFAOYSA-N magnesium silicide Chemical compound [Mg]=[Si]=[Mg] YTHCQFKNFVSQBC-UHFFFAOYSA-N 0.000 description 1
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
- C21C1/00—Refining of pig-iron; Cast iron
Definitions
- the principal object of the invention is to produce gray iron castings of superior strength and greater uniformity, but not too hard to be readily and economically machined.
- silicide examples include calcium silicide and magnesium silicide, each of which is a strong reducing agent, readily soluble in the molten white iron, easily workable in practice, and acts to rid the bath of occluded gases, and to precipitate the carbon content of the molten white iron.
- the silicide is preferably added to .the molten white iron in the ladle, but it may he added to the bath within the furnace with good results.
- the character of the gray iron produced by this method can be varied by varying the proportion of the silicide which is added to the molten white iron.
- molten white iron I mean molten iron of such a composition that castings formed therefrom will be white in fracture.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
Description
Patented June 24, 1924.
PATENT OFFICE.
AUGUSTUS F. MEEHAN.
OF GHATTANOOGA, TENNESSEE.
MAKING GRAY IRON.
No Drawing. Application filed February 8, 1822, Serial No. 535,067. Renewed April 8,1924.
To all whom it may concern.
Be it known that I, AUGUSTUS F. MEE- i-iAN, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented new and useful Improvements in Making Gray Iron, of which the. following is a specification.
The principal object of the invention is to produce gray iron castings of superior strength and greater uniformity, but not too hard to be readily and economically machined.
Other objects will appear in connection with the following description.
I have ascertained that gray iron of great strength and uniformity, but not too hard to be readily and economically machined. can
be produced by adding to molten white iron,
a silicide substantially free from iron.
Examples of such a silicide are calcium silicide and magnesium silicide, each of which is a strong reducing agent, readily soluble in the molten white iron, easily workable in practice, and acts to rid the bath of occluded gases, and to precipitate the carbon content of the molten white iron.
I prefer to use calcium silicide,
The silicide is preferably added to .the molten white iron in the ladle, but it may he added to the bath within the furnace with good results.
In thus converting white iron into gray iron by the employment of a silicide substantially free from iron, I am able to very accurately control the graphitization of the re sultant gray iron and obtain a substantially my hand this first day uniform product due to the fact that a silicide free from iron, such as calcium silicide, can be readily obtained of uniform compo-- sition.
By convertin white iron into gray iron by the method escribed I am able to obtain substantial uniformity in the product which is of greater stren h than gray iron produced by other ,met ods, while not too hard to be readily machined.
The character of the gray iron produced by this method can be varied by varying the proportion of the silicide which is added to the molten white iron.
By the term molten white iron I mean molten iron of such a composition that castings formed therefrom will be white in fracture.
What I claim as new and desire to secure by Letters Patentis 1. That improvement in the art of converting white iron into gray iron which consists in adding to molten white iron 2 silicide substantially free -from iron.
2. That improvement in the art of conerting white iron into gray iron which consists in adding to molten white iron a car hon-precipitating silicide substantially free from iron.
That improvement in the art of con- \"erting white iron into gray iron which consists in adding to molten white iron calcium silicide.
In testimony whereof. I have hereunto set of February. 1922.
AUGUSTUS F. MEEHAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US535067A US1499068A (en) | 1922-02-08 | 1922-02-08 | Making gray iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US535067A US1499068A (en) | 1922-02-08 | 1922-02-08 | Making gray iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1499068A true US1499068A (en) | 1924-06-24 |
Family
ID=24132702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US535067A Expired - Lifetime US1499068A (en) | 1922-02-08 | 1922-02-08 | Making gray iron |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1499068A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540173A (en) * | 1948-01-30 | 1951-02-06 | Olivo Mario | Cupola briquette |
| DE973431C (en) * | 1948-07-28 | 1960-02-18 | Mond Nickel Co Ltd | Master alloy for making spherulitic cast iron |
-
1922
- 1922-02-08 US US535067A patent/US1499068A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540173A (en) * | 1948-01-30 | 1951-02-06 | Olivo Mario | Cupola briquette |
| DE973431C (en) * | 1948-07-28 | 1960-02-18 | Mond Nickel Co Ltd | Master alloy for making spherulitic cast iron |
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