GB442211A - Improvements in and relating to manufacture of sheets of iron-silicon alloys - Google Patents
Improvements in and relating to manufacture of sheets of iron-silicon alloysInfo
- Publication number
- GB442211A GB442211A GB18761/34A GB1876134A GB442211A GB 442211 A GB442211 A GB 442211A GB 18761/34 A GB18761/34 A GB 18761/34A GB 1876134 A GB1876134 A GB 1876134A GB 442211 A GB442211 A GB 442211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat treatment
- temperature
- heated
- cold rolled
- recrystallization
- 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
- C21D8/1244—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
- C21D8/1272—Final recrystallisation annealing
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Abstract
In the manufacture of sheets of iron silicon alloys, the hot rolled alloys are cold rolled to an intermediate gauge, subjected to a heat treatment to effect a recrystallization, preferably at a temperature between 1500 and 1850 DEG C. cold rolled to a final gauge and finally heat treated in the solid state to effect recrystallization at a temperature above that of the first heat treatment preferably at a temperature between 1600 and 2100 DEG F. Prior to the initial cold rolling the hot rolled strip is subjected to a heat treatment to effect a complete recrystallization preferably at a temperature of 1400 to 1700 DEG F., and after the final heat treatment the material is batch annealed at 1200-1450 DEG F., either in sheet form or after punching, shearing or stamping. The heating is carried out in a reducing atmosphere and is followed by cooling in a non-oxidizing atmosphere. In an example, a hot rolled silicon steel having a silicon content of 3,6 per cent or less and a thickness of ,065.. ,01 inch is heated to 1400-1700 DEG F., cold rolled to a thickness of ,025-,04 inch, heated to 1500-1850 DEG F., cold rolled to the final gauge and then heated to 1600-2100 DEG F. The sheet material produced has a uniform grain structure of random orientation the grain size being 1,5 mm. or less and a magnetic moment approaching that of a single crystal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US442211XA | 1933-08-07 | 1933-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB442211A true GB442211A (en) | 1936-01-27 |
Family
ID=21931149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18761/34A Expired GB442211A (en) | 1933-08-07 | 1934-06-25 | Improvements in and relating to manufacture of sheets of iron-silicon alloys |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE763989C (en) |
| FR (1) | FR776165A (en) |
| GB (1) | GB442211A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975253C (en) * | 1939-05-06 | 1961-10-19 | Siemens Ag | Transformer core |
| DE977648C (en) * | 1944-04-07 | 1967-11-30 | Siemens Ag | Process for improving the properties of magnetically stressed objects made of iron-silicon alloys |
| DE1226128B (en) * | 1955-05-03 | 1966-10-06 | Walzwerk Neviges G M B H | Method and device for the heat treatment of metal sheets, in particular electrical sheets, in a magnetic field |
| JPS57164935A (en) * | 1981-04-04 | 1982-10-09 | Nippon Steel Corp | Unidirectionally inclined heating method for metallic strip or metallic plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE501586C (en) * | 1926-09-05 | 1930-07-03 | Otto Herbert Doehner | Process for regenerating the electrical properties of strips, sheets, wires and others made of iron alloyed with silicon |
| US1915766A (en) * | 1930-10-31 | 1933-06-27 | Smith Willoughby Statham | Manufacture of magnetic alloys |
| US1965559A (en) * | 1933-08-07 | 1934-07-03 | Cold Metal Process Co | Electrical sheet and method and apparatus for its manufacture and test |
-
1934
- 1934-06-25 GB GB18761/34A patent/GB442211A/en not_active Expired
- 1934-07-05 DE DEC49395D patent/DE763989C/en not_active Expired
- 1934-07-19 FR FR776165D patent/FR776165A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR776165A (en) | 1935-01-18 |
| DE763989C (en) | 1952-08-21 |
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