GB673824A - Improvements in or relating to recording wire - Google Patents
Improvements in or relating to recording wireInfo
- Publication number
- GB673824A GB673824A GB33491/48A GB3349148A GB673824A GB 673824 A GB673824 A GB 673824A GB 33491/48 A GB33491/48 A GB 33491/48A GB 3349148 A GB3349148 A GB 3349148A GB 673824 A GB673824 A GB 673824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- inches
- stainless steel
- inert atmosphere
- recording
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/642—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent self supporting magnetic material, e.g. magnetisable wires
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
673,824. Making sound-recording wire. NATIONAL STANDARD CO. Dec. 30, 1948 [Jan. 10, 1948], No. 33491/48. Classes 83 (ii) and 83 (iv). A sound-recording wire of stainless steel having a tensile strength of at least 280,000 lbs. per square inch and an average intrinsic coercive force in excess of 200 oersteds has a minimum intrinsic coercive force not substantially different from its maximum whereby the wire is readily erasable. The wire may be produced by cold drawing an 18-8 austeritic stainless steel wire to a diameter of about 0.0165 inches, annealing the wire by heating to a temperature of about 1850‹ F. for approximately five seconds in an inert atmosphere, and then, after cold drawing to the final diameter (0.004 or 0.0036 inches), feeding the wire at 200 feet per minute through a furnace maintained at 1200‹ F. and having a heating zone of 10 feet of inert atmosphere.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US673824XA | 1948-01-10 | 1948-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB673824A true GB673824A (en) | 1952-06-11 |
Family
ID=22075636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33491/48A Expired GB673824A (en) | 1948-01-10 | 1948-12-30 | Improvements in or relating to recording wire |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB673824A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2900282A (en) * | 1956-07-20 | 1959-08-18 | Sperry Rand Corp | Method of treating magnetic material and resulting articles |
| CN114107638A (en) * | 2021-10-25 | 2022-03-01 | 浙江腾龙精线有限公司 | Processing method of steel wire for armored cable |
-
1948
- 1948-12-30 GB GB33491/48A patent/GB673824A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2900282A (en) * | 1956-07-20 | 1959-08-18 | Sperry Rand Corp | Method of treating magnetic material and resulting articles |
| CN114107638A (en) * | 2021-10-25 | 2022-03-01 | 浙江腾龙精线有限公司 | Processing method of steel wire for armored cable |
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