US837682A - Process of improving the magnetic qualities or iron-silicon-manganese alloys. - Google Patents
Process of improving the magnetic qualities or iron-silicon-manganese alloys. Download PDFInfo
- Publication number
- US837682A US837682A US33142306A US1906331423A US837682A US 837682 A US837682 A US 837682A US 33142306 A US33142306 A US 33142306A US 1906331423 A US1906331423 A US 1906331423A US 837682 A US837682 A US 837682A
- Authority
- US
- United States
- Prior art keywords
- iron
- silicon
- improving
- alloy
- manganese
- 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 6
- 230000008569 process Effects 0.000 title description 6
- 229910000914 Mn alloy Inorganic materials 0.000 title description 5
- IWTGVMOPIDDPGF-UHFFFAOYSA-N [Mn][Si][Fe] Chemical compound [Mn][Si][Fe] IWTGVMOPIDDPGF-UHFFFAOYSA-N 0.000 title description 5
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15341—Preparation processes therefor
Definitions
- My present invention is a process of heat treatment applied to the aforesaid iron-silicon-manganese alloy for the purposestated.
- critical point means the point ofhigher temperature of the two above noted and approximates to the 900-centigrade point in the case of pure iron, which is the lower limit of its so-called gamma state. This gamma state is definitely shown, for example, in ordinary carbon steels when heated.
- a diagram accurately illustrating this oint is given by Messrs. Arnold and McWi liam in their paper on the thermal transformations of carbon steels published in the J oumal of the Iron and Steel Institute, 1905, Vol. 2.
- Diagram 2 in this paper shows the critical point for a certain carbon steel at about 870- centigrade.
- the alloy should be low in carbon and contain, say, under twelve one-hundredths of one per cent.
- the material ascast may be used, being suitably treat-- ed in the same manner as the forged or rolled material.
- I claim- 1 The process of increasing the magnetic permeability and electric resistance and reducing the hysteresis action of an iron-silicon-manganese alloy low in carbon, which consists in heating said alloy to a temperature above its critical point, and then cooling.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
Description
v TED STATES PATENT OFFICE.
ROBERT ABBOTT HADFIELD, OF SHEFFIELD, ENGLAND. PROCESS .OF IMPROVING TIIE MAGNETIC QUALITIES 0F IRON-SILICON-MANGANESE ALLOYS.
Patented necf4. 1906.
Application filed August 21, 1906. serial No. 331,423.
To all whont it may concern: I
Be it known that 1, ROBERT ABBOTT HAD- F ELD,a subject of the King of Great Britain, and a resident of Sheflield, England, have-invented a certain new and useful Improvement in Processes of Improving the Magnetic Qualities of Iron-Silicon-Manganese Alloys,
of which the following is a specification.
In another application for Letters Patent, Serial No. 324,892, filed July 5, 1906, I have described and claimed an alloy of iron with silicon in such proportion as to increase the magnetic permeability and electric resistance and to decrease the hysteresis action, and thus to reduce the total magnetic and electric losses in the mixture, (when such alloy is used for ballast-coils, transformer plates, or like electric apparatus to which aloy manganese is added in order to improve the physical properties of said alloy in oint of capacity for being worked, rolle or forged. In order to effect the best reduction of the said magnetic and electric losses, a heat treatment of said alloy is necessary.
My present invention is a process of heat treatment applied to the aforesaid iron-silicon-manganese alloy for the purposestated.
In carrying my invention into efiect Ifirst prepare an alloy of iron and silicon inmolten state and add manganese thereto in proportion not exceeding one-half of one per cent. of the total mass. Such a proportion of manganese is not sufficient to im air the ma netic qualities of the alloy, while it is su cient materially to improve its working or rolling ualities. I then cast the ingots in the usua way and convert the ingots into desired shapes and thicknesses and heat the alloy to a tem erature above a critical point (hereinafter efined) and then cool the same slowly.
When said alloy is subjected to progressive temperature variations (below fusion) from 600 centigrade upward, it undergoes at a certain temperature-point an apparent molecular change, and on further alteration of tem erature another point ensues at which anot or molecular change occurs.
The term critical point herein used means the point ofhigher temperature of the two above noted and approximates to the 900-centigrade point in the case of pure iron, which is the lower limit of its so-called gamma state. This gamma state is definitely shown, for example, in ordinary carbon steels when heated. A diagram accurately illustrating this oint is given by Messrs. Arnold and McWi liam in their paper on the thermal transformations of carbon steels published in the J oumal of the Iron and Steel Institute, 1905, Vol. 2. Diagram 2 in this paper shows the critical point for a certain carbon steel at about 870- centigrade. The alloy should be low in carbon and contain, say, under twelve one-hundredths of one per cent.
For certain purposes, 1f desired, the material ascast may be used, being suitably treat-- ed in the same manner as the forged or rolled material.
I claim- 1. The process of increasing the magnetic permeability and electric resistance and reducing the hysteresis action of an iron-silicon-manganese alloy low in carbon, which consists in heating said alloy to a temperature above its critical point, and then cooling.
2. The process of increasing the magnetic permeability and electric resistance and reducing the hysteresis action and also of improving the working and rolling qualities. of an iron-silicon alloy, low in carbon, which consists in melting together iron and silicon, adding manganese in proportion not suffi cient to impair said magnetic qualities casting into in ot form converting said ingots into desire shapes and thicknesses by appropriate means, heating said alloy to a tem-- ROBERT ABBOTT HADEIELD.
Witnesses:
WILLIAM CRoss, WILLIAM OBAWLEY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33142306A US837682A (en) | 1906-08-21 | 1906-08-21 | Process of improving the magnetic qualities or iron-silicon-manganese alloys. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33142306A US837682A (en) | 1906-08-21 | 1906-08-21 | Process of improving the magnetic qualities or iron-silicon-manganese alloys. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US837682A true US837682A (en) | 1906-12-04 |
Family
ID=2906156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US33142306A Expired - Lifetime US837682A (en) | 1906-08-21 | 1906-08-21 | Process of improving the magnetic qualities or iron-silicon-manganese alloys. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US837682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2631118A (en) * | 1949-12-21 | 1953-03-10 | Bell Telephone Labor Inc | Method of producing soft magnetic materials |
-
1906
- 1906-08-21 US US33142306A patent/US837682A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2631118A (en) * | 1949-12-21 | 1953-03-10 | Bell Telephone Labor Inc | Method of producing soft magnetic materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10883160B2 (en) | Corrosion and creep resistant high Cr FeCrAl alloys | |
| Wang et al. | Effect of cooling rate on bending behavior of 6.5 wt.% Si electrical steel thin sheets fabricated by strip casting and rolling | |
| JP6656013B2 (en) | Low thermal expansion cast steel product and method of manufacturing the same | |
| US837682A (en) | Process of improving the magnetic qualities or iron-silicon-manganese alloys. | |
| US3695944A (en) | Iron cobalt vanadium alloy | |
| JP3614869B2 (en) | High strength non-magnetic low thermal expansion alloy | |
| US2809888A (en) | Cast iron with high creep resistance and method for making same | |
| US2442219A (en) | Magnetic alloy | |
| US836497A (en) | Process of improving the magnetic qualities of iron-silicon-aluminium alloys. | |
| US2022686A (en) | Aluminum alloy casting and method of making the same | |
| US2053346A (en) | Roll for fabricating hot metal | |
| US1932838A (en) | Aluminum alloys | |
| US836762A (en) | Process of improving the magnetic qualities of iron-silicon-aluminium alloys. | |
| US745829A (en) | Magnetic composition and method of making same. | |
| US1086765A (en) | Process for improving the magnetic qualities of iron-silicon-manganese-aluminium alloys. | |
| US2919188A (en) | High strength alloy steels | |
| JPS5841340B2 (en) | Non-magnetic steel with excellent mechanical properties | |
| USRE12691E (en) | Robert abbott hadfield | |
| US767110A (en) | Method of making magnetic materials. | |
| US1539456A (en) | A corpora | |
| US4196261A (en) | Stable bimetal strip | |
| US3793009A (en) | Impact antispark alloy for machine parts | |
| US577851A (en) | Robert a | |
| US2066926A (en) | Magnetic iron alloy | |
| US836759A (en) | Method of making magnetic materials. |