GB795989A - Improvements in or relating to the extrusion of metal billets - Google Patents
Improvements in or relating to the extrusion of metal billetsInfo
- Publication number
- GB795989A GB795989A GB4065/56A GB406556A GB795989A GB 795989 A GB795989 A GB 795989A GB 4065/56 A GB4065/56 A GB 4065/56A GB 406556 A GB406556 A GB 406556A GB 795989 A GB795989 A GB 795989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- glass
- glass powder
- billet
- binder
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
795,989. Extruding. BABCOCK & WILCOX CO. Feb. 9, 1956 [May 31, 1955], No. 4065/56. Class 83 (4). In the extrusion of heated metal billets 6, a preformed homogeneous disc 12 of agglomerated glass powder is used at the entrance to the die orifice 5. The billet, which may be of stainless steel, is heated externally to the extrusion temperature and a quantity of glass powder is placed in its bore 7. The billet is then rolled over an asbestos pad coated with glass powder whereby during the rolling, layers 9, 10 of glass are formed on the inner and outer surfaces of the billet. The glass disc 12 may be formed from powdered window glass with a binder of sodium silicate which is compressed in a die assembly 20, 22, 24, Fig. 2 (not shown), to give the required shape. The bore 13 of the disc is equal to or slightly larger than the diameter of the die orifice 5. For extruding relatively low melting point metals, glass powder having a low softening point is used and in this case phosphoric acid is used as a binder. Alternatively instead of using a binder, the disc may be made by sintering a compacted or uncompacted body of glass powder. Examples are given of the grain sizes of the glass powder, the density of the disc, and the dimension of a particular disc. Comparison is made between the use of a glass disc of the invention and a pad of glass fibres. Specifications 607,285 and 784,492 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US795989XA | 1955-05-31 | 1955-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB795989A true GB795989A (en) | 1958-06-04 |
Family
ID=22151555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4065/56A Expired GB795989A (en) | 1955-05-31 | 1956-02-09 | Improvements in or relating to the extrusion of metal billets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB795989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1149321B (en) * | 1959-01-29 | 1963-05-30 | Babcock & Wilcox Co | Extrusion die with at least two openings for full profiles |
| CZ306401B6 (en) * | 2015-12-03 | 2017-01-04 | VĂŤTKOVICE CYLINDERS a. s. | The method of producing a high-pressure seamless bottle made of stainless steel |
-
1956
- 1956-02-09 GB GB4065/56A patent/GB795989A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1149321B (en) * | 1959-01-29 | 1963-05-30 | Babcock & Wilcox Co | Extrusion die with at least two openings for full profiles |
| CZ306401B6 (en) * | 2015-12-03 | 2017-01-04 | VĂŤTKOVICE CYLINDERS a. s. | The method of producing a high-pressure seamless bottle made of stainless steel |
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