US1173951A - Manufacture of sheet silicon alloy. - Google Patents
Manufacture of sheet silicon alloy. Download PDFInfo
- Publication number
- US1173951A US1173951A US84706914A US1914847069A US1173951A US 1173951 A US1173951 A US 1173951A US 84706914 A US84706914 A US 84706914A US 1914847069 A US1914847069 A US 1914847069A US 1173951 A US1173951 A US 1173951A
- Authority
- US
- United States
- Prior art keywords
- manufacture
- sheets
- silicon alloy
- sheet silicon
- sheet
- 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
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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/028—Magnetic recording digest
Definitions
- This invention has for its object to improve the magnetic and mechanical properties of sheet metal alloyed with silicon.
- the sheets in their otherwise finished state, are pickled in an acid solution and thereupon washed in a neutralizing solution and dried.
- the properties of the sheets are considerably improved.
- the permeability is increased .and the loss due to hysteresis is reduced.
- the further advantage is obtained that the insulating paper, which is subsequently affixed to the sheets, adheres more firmly and does not become detached with the scale.
- the otherwise finished sheets that is to say, the finally annealed sheets
- the sheets are pickled in a warm dilute acid solution, being left to the action of the said solution for a length of time dependent on the strength of the acid bath.
- the sheets are washed in a neutralizing solution and, after being again washed if required, are passed through heated rollers to dry the sheets.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Description
UNITED STATES PATENT OFFICE.
. OTTO GRAEF, OI BJISIIMIIABGKIH'lJTl-"JEE, GERMANX, ASSIGNOR TO THE FIRM OF BISMARCK- Hll'TTE, 0F BISMARCKH'UTTE, GERMANY.
MANUFACTURE OF SHEET SILICON ALLOY.
1% Drawing.
To all whom it may concern:
Be it known that I, O'r'ro GRAEF, subject of the Emperor of Germany, residing at Bismarckhiitte, Province of Silesia, Germany. have invented certain new and useful Improvements Silicon Alloy. specification.
This invention has for its object to improve the magnetic and mechanical properties of sheet metal alloyed with silicon.
According to the present invention, the sheets, in their otherwise finished state, are pickled in an acid solution and thereupon washed in a neutralizing solution and dried.
By pickling the sheets in this manner, after the final manufacture of the sheet silicon alloy, the properties of the sheets are considerably improved. In particular. the permeability is increased .and the loss due to hysteresis is reduced. Moreover the further advantage is obtained that the insulating paper, which is subsequently affixed to the sheets, adheres more firmly and does not become detached with the scale.
It is well known to anneal the sheet silicon alloy after manufacture in order to affect its properties but hitherto, "in order to prevent the troublesome peelin off of the paper with the scale resultin rom the manufacture of the sheets, it has een usual to manufacture sheets of this kind free from scale by pickling them, after manufacture, to remove the scale before subjecting-them to the necessary annealing process. The applicant has found however, that by proceeding in the reverse direction to that just described, that is, by first annealing the of which the following is a sheets and then finally pickling them, a con- Speclfication of Letters Patent.
in the Manufacture of Sheet siderable improvement in the quality of the. sheets is obtained as compared with the old method, both as regards the reduction of the loss in watts and the increase of the induction of the sheets.
In carrying out the improved method, the otherwise finished sheets, that is to say, the finally annealed sheets, are pickled in a warm dilute acid solution, being left to the action of the said solution for a length of time dependent on the strength of the acid bath. Thereupon the sheets are washed in a neutralizing solution and, after being again washed if required, are passed through heated rollers to dry the sheets.
Extensive use. of this process has absolntely demonstrated that by treating plates of high silicon content in the manner described the wattage loss is materially re- Patented Feb. 29, 1916. Application filed June 24, 1914. Serial No. 847,069.
duced and the plates rendered superior to a o'r'ro GRAEF.
Witnesses:
- LoUIs S. STAEL,
EaNEsr SCHMIDT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84706914A US1173951A (en) | 1914-06-24 | 1914-06-24 | Manufacture of sheet silicon alloy. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84706914A US1173951A (en) | 1914-06-24 | 1914-06-24 | Manufacture of sheet silicon alloy. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1173951A true US1173951A (en) | 1916-02-29 |
Family
ID=3241953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US84706914A Expired - Lifetime US1173951A (en) | 1914-06-24 | 1914-06-24 | Manufacture of sheet silicon alloy. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1173951A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2443756A (en) * | 1942-12-26 | 1948-06-22 | Brush Dev Co | Magnetic material |
| US2582382A (en) * | 1946-11-23 | 1952-01-15 | Armco Steel Corp | Production of electrical steel strip |
-
1914
- 1914-06-24 US US84706914A patent/US1173951A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2443756A (en) * | 1942-12-26 | 1948-06-22 | Brush Dev Co | Magnetic material |
| US2582382A (en) * | 1946-11-23 | 1952-01-15 | Armco Steel Corp | Production of electrical steel strip |
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