GB487844A - Sheet metal and method of manufacture - Google Patents
Sheet metal and method of manufactureInfo
- Publication number
- GB487844A GB487844A GB25474/36A GB2547436A GB487844A GB 487844 A GB487844 A GB 487844A GB 25474/36 A GB25474/36 A GB 25474/36A GB 2547436 A GB2547436 A GB 2547436A GB 487844 A GB487844 A GB 487844A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- sept
- reducing atmosphere
- speed
- strip
- 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
- 239000002184 metal Substances 0.000 title abstract 7
- 229910052751 metal Inorganic materials 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000001816 cooling Methods 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 238000000137 annealing Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 210000005069 ears Anatomy 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
487,844. Annealing. COLD METAL PROCESS CO. Sept. 18, 1936, No. 25474. Void. Convention date, Sept. 20, 1935. [Class 72] [Also in Group XXII] Sheet metal particularly for use in deep drawing is cold rolled and then maintained for some time above the upper critical temperature of 1700‹ F. and then cooled at least until the A1 point is reached. The metal strip may be first plated with copper or other softer metal in a coating bath 11 and then is cold rolled with 80 per cent reduction to a thickness of from À001" to À035". It then passes through a 15' long furnace 15 above 1700‹ F. in a reducing atmosphere, preferably at a speed of 18' per minute and it then emerges to a cooling chamber 17 also with a reducing atmosphere. The speed of travel of the strip through the furnace affects the Olsen value, being plotted on Fig. 4 (not shown). After cooling, the metal may be box-annealed and normalized, but as the Rockwell hardness number is usually below 50-45, this process may be dispensed with. A cup drawn from the metal with a ratio of depth to diameter greater than À3 is free from ears.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US487844XA | 1935-09-20 | 1935-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487844A true GB487844A (en) | 1938-06-24 |
Family
ID=21956429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25474/36A Expired GB487844A (en) | 1935-09-20 | 1936-09-18 | Sheet metal and method of manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487844A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3214820A (en) * | 1963-02-08 | 1965-11-02 | Nat Steel Corp | Steel foil and manufacture |
-
1936
- 1936-09-18 GB GB25474/36A patent/GB487844A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3214820A (en) * | 1963-02-08 | 1965-11-02 | Nat Steel Corp | Steel foil and manufacture |
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