GB1186009A - Production of Electrical Quality Steel Strip - Google Patents
Production of Electrical Quality Steel StripInfo
- Publication number
- GB1186009A GB1186009A GB3158267A GB3158267A GB1186009A GB 1186009 A GB1186009 A GB 1186009A GB 3158267 A GB3158267 A GB 3158267A GB 3158267 A GB3158267 A GB 3158267A GB 1186009 A GB1186009 A GB 1186009A
- Authority
- GB
- United Kingdom
- Prior art keywords
- less
- steel
- strip
- grain size
- atmosphere
- 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
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
- C21D3/04—Decarburising
-
- 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
- C21D8/1261—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 following hot 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- 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
- C21D8/1255—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 with diffusion of elements, e.g. decarburising, nitriding
-
- 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
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
1,186,009. Heat-treating and decarburizing steel. KONINKLLIKE NEDERLANDSCHE HOOGOVENS EN STAALFABRIEKEN N.U. July 10, 1967 [July 13, 1966], No.31582/67. Headings C7A and C7D. In the manufacture of electrical quality strip a steel containing in percentage by weight:- C up to 0‹15 Si up to 2 Al up to 0À7 Mn 0À15 to 0À6 P up to 0À06 Fe and impurities balance is hot rolled, and subjected to a decarburizing anneal to reduce the carbon content to not more than 0À01%. Concurrently with or subsequent to the decarburization the strip is annealed to increase the grain size to not less than ASTM 3, followed by cold rolling and by a recrystallization annealing under such conditions of time and temperature that a grain size finer than ASTM 5 is obtained. In the preferred practice the initial anneal is carried out with the strip in the form of an open coil at not less than 600‹ C. in an atmosphere of nitrogen containing not less than 5% by volume of hydrogen, the atmosphere being initially moistened to a dew-point between 0‹ C. and 35‹C.; when the carbon content of the steel has been reduced to 0À005% the annealing is continued in the same atmosphere in a dry state at not less than 800‹ C. until the desired grain size is reached. After de-scaling the steel is cold rolled by at least 40%, and is then in a closed coil annealed in the range 600‹ -700‹ C. for a sufficiently short time to avoid any secondary grain growth.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6609855A NL6609855A (en) | 1966-07-13 | 1966-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1186009A true GB1186009A (en) | 1970-04-02 |
Family
ID=19797171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3158267A Expired GB1186009A (en) | 1966-07-13 | 1967-07-10 | Production of Electrical Quality Steel Strip |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE701254A (en) |
| DE (1) | DE1583378A1 (en) |
| GB (1) | GB1186009A (en) |
| LU (1) | LU54095A1 (en) |
| NL (1) | NL6609855A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010032919B4 (en) * | 2010-07-30 | 2023-10-05 | Air Liquide Deutschland Gmbh | Method and device for humidifying a combustible gas |
-
1966
- 1966-07-13 NL NL6609855A patent/NL6609855A/xx unknown
-
1967
- 1967-07-10 GB GB3158267A patent/GB1186009A/en not_active Expired
- 1967-07-11 DE DE19671583378 patent/DE1583378A1/en active Pending
- 1967-07-12 BE BE701254D patent/BE701254A/xx unknown
- 1967-07-13 LU LU54095D patent/LU54095A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6609855A (en) | 1968-01-15 |
| BE701254A (en) | 1968-01-12 |
| DE1583378A1 (en) | 1970-08-13 |
| LU54095A1 (en) | 1967-09-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |