GB527525A - Art of producing magnetic materials - Google Patents
Art of producing magnetic materialsInfo
- Publication number
- GB527525A GB527525A GB11280/38A GB1128038A GB527525A GB 527525 A GB527525 A GB 527525A GB 11280/38 A GB11280/38 A GB 11280/38A GB 1128038 A GB1128038 A GB 1128038A GB 527525 A GB527525 A GB 527525A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- inch
- cold rolling
- produce
- passes
- 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
-
- 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
-
- 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
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
Landscapes
- 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)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
527,525. Altering physical structure. WILLIAMS, W. P. (American Rolling Mill Co.). April 13, 1939, No. 11280. [Class 83 (iv)] In a process of producing high permeability silicon steel, hot rolled silicon steel pieces are cold rolled to produce a reduction of between 60 per cent. to 85 per cent. while keeping the temperature below the boiling point of water, annealing the work and subjecting it to a second cold rolling reduction of between 40 per cent. to 65 per cent. at a similar low temperature and finally heat treating the work preferably at approximately 2200‹F. in an atmosphere of hydrogen. In one example given, the first cold rolling reduces the thickness of the strip from 0.105 inch to 0.029 inch in from four to six passes. It is then open annealed at 1850‹F. and in the second stage of cold rolling is reduced in from six to ten passes from 0.029 inch to 0.013 inch. The treatment is stated to produce a cold rolling orientation and turning of the crystals. The composition of the steel is preferably silicon 2.90 per cent. to 3.30 per cent.; carbon, 0.02 per cent. or under; manganese 0.06 per cent. to 0.09 per cent. and sulphur 0.03 per cent. or under.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE433708D BE433708A (en) | 1939-04-06 | 1939-04-06 | |
| GB11280/38A GB527525A (en) | 1939-04-06 | 1939-04-13 | Art of producing magnetic materials |
| FR853124D FR853124A (en) | 1939-04-06 | 1939-04-14 | Manufacturing process of magnetic materials and products obtained by this process |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE433708T | 1939-04-06 | ||
| GB11280/38A GB527525A (en) | 1939-04-06 | 1939-04-13 | Art of producing magnetic materials |
| FR853124T | 1939-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB527525A true GB527525A (en) | 1940-10-10 |
Family
ID=9983303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11280/38A Expired GB527525A (en) | 1939-04-06 | 1939-04-13 | Art of producing magnetic materials |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE433708A (en) |
| FR (1) | FR853124A (en) |
| GB (1) | GB527525A (en) |
-
1939
- 1939-04-06 BE BE433708D patent/BE433708A/xx unknown
- 1939-04-13 GB GB11280/38A patent/GB527525A/en not_active Expired
- 1939-04-14 FR FR853124D patent/FR853124A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR853124A (en) | 1940-03-11 |
| BE433708A (en) | 1939-05-31 |
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