US1012845A - Process of improving certain magnetic qualities of a magnetic body. - Google Patents
Process of improving certain magnetic qualities of a magnetic body. Download PDFInfo
- Publication number
- US1012845A US1012845A US55982310A US1910559823A US1012845A US 1012845 A US1012845 A US 1012845A US 55982310 A US55982310 A US 55982310A US 1910559823 A US1910559823 A US 1910559823A US 1012845 A US1012845 A US 1012845A
- Authority
- US
- United States
- Prior art keywords
- magnetic
- qualities
- magnetic body
- improving certain
- iron
- 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 4
- 230000008569 process Effects 0.000 title description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 241001508687 Mustela erminea Species 0.000 description 1
- 241000287531 Psittacidae Species 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- IWTGVMOPIDDPGF-UHFFFAOYSA-N [Mn][Si][Fe] Chemical compound [Mn][Si][Fe] IWTGVMOPIDDPGF-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- -1 iron-silicon-aluminum Chemical compound 0.000 description 1
- 239000010703 silicon Substances 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
- the invention is a process for improving certain magnetic qualifies of a magnetic; body containing iron.
- the permeability may be increased and the hysteresis actibn reduced of a magnetic body containing iron and low in carbon, by heating said body to a point within bounds known as the gamma range of temperature which brings about a certain conditioner structure of the iron present, and then cooling the same preferably slowly.
- This heating and cooling may beieifected in any suitable way.
- gamma range of temperature is meant that range of temperature existing above the third critical point most definitely shown in ordinary carbon steels when heated] A dia 1 gram accurately illustrating this point is given.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Soft Magnetic Materials (AREA)
Description
. n Drawin Application fled February a1,
4, .nonnnrnnanrmin, Premises or mnovme-cnnum Toallwhomitmymtflfl: e
.Be it known that I, Ronnn'r A. Hanrmrn, a subject of the King of Great Britain, residing at Parkhead, Shefiield, England, have invented a certain new and useful Improvement in Processes for Improving .Certaiir Magnetic Qualities of a Magnetic Body, of e which the following is a specification. I]
The invention is a process for improving certain magnetic qualifies of a magnetic; body containing iron.
I have discovered that the permeability may be increased and the hysteresis actibn reduced of a magnetic body containing iron and low in carbon, by heating said body to a point within bounds known as the gamma range of temperature which brings about a certain conditioner structure of the iron present, and then cooling the same preferably slowly. This heating and cooling may beieifected in any suitable way. By gamma range of temperature is meant that range of temperature existing above the third critical point most definitely shown in ordinary carbon steels when heated] A dia 1 gram accurately illustrating this point is given. by Messrs; Arnold and McWilliam in,
their paper on" the thermal transformations of carbon steels published in the, Journal 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 variations from this'temperature for varying carbon contents are discussed in other portions of'the same paper. his to be pointed out that thepres: f ence of constitutents other than carbon,j also 7 Influence the lower limit of-temperature of the gamma state. There canybe no ambigas to the-,me'a. of the termabove vd ed, sinceit-is'wielyused in'c'ontemporaneous metallurgical literature.
menn'nc ermine onv A s am s of Lemma. Patentedbec.
1000, semi macaw. re ew my a, mo, 559,828.
. In U. ted'to me Novemberfl'l, 1906, I have set iorth an alloy of iron and silicon, which is S. Letters Patent No.1 836, l 54;;-
i an.
one specific magnetic body within the present disclosure, treated by heating to -a point within the gamma range as herein set, I forth. In'U. S. Letters Patent No. 836,497,
granted to me November 20, 1906, I have set .forth an iron-silicon-aluminum alloy, which is another specific magnetic body, similarly treated, and in U. S. Letters Patent No. 837,682, granted to me-December 4, 1906, I have described'still-another such specific magnetic body, name1y,-an iron-silicon-manganese alloy treated in like manner.
I claim:
, 1.:The herein described I of in decreasing the hysteresls'actlon-oi a'mag-' creasing the permeabili and resistance and 'netic body, which consists in heating said body-to-a point within bounds kn as e I 'ig a range and thenlcooling 2. The 'hereindescribed ces s f i range and then slowly cooling.-
3. The herein described process signature in presence of two Y 1 ROBERT A; HADFIEE'D.
Witnessesr' W G. H. Hnnsonn, E. Romans,
of in creasing the permeability and reducing the 1 hysteresis -.action of a magnetic-body con taining iron and being low-in carbon, which" consists in heating the'body to 'a'point-within bounds known as.-the .gammarange 1 I and then--cooling',.substantial1y-as described.
In testimony whereof-.1 have aflixed my 65. creasing the permeability an resistance and reducing the hysteresis action of .alnagne ic' bodycontaining iron and being low in car-g bon, which consists in heating the. body to a point within bounds known as the 'gamma. .g
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55982310A US1012845A (en) | 1910-05-06 | 1910-05-06 | Process of improving certain magnetic qualities of a magnetic body. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55982310A US1012845A (en) | 1910-05-06 | 1910-05-06 | Process of improving certain magnetic qualities of a magnetic body. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1012845A true US1012845A (en) | 1911-12-26 |
Family
ID=3081153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US55982310A Expired - Lifetime US1012845A (en) | 1910-05-06 | 1910-05-06 | Process of improving certain magnetic qualities of a magnetic body. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1012845A (en) |
-
1910
- 1910-05-06 US US55982310A patent/US1012845A/en not_active Expired - Lifetime
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