GB896923A - Improvements in magnetic metal forming devices - Google Patents
Improvements in magnetic metal forming devicesInfo
- Publication number
- GB896923A GB896923A GB29207/59A GB2920759A GB896923A GB 896923 A GB896923 A GB 896923A GB 29207/59 A GB29207/59 A GB 29207/59A GB 2920759 A GB2920759 A GB 2920759A GB 896923 A GB896923 A GB 896923A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- metal
- magnetic field
- die
- workpiece
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
Abstract
896,923. Stamping; forging; welding by pressure; jointing. GENERAL DYNAMICS CORPORATION. Aug. 26, 1959 [Aug. 28. 1958], No. 29207/59. Class 83 (4). A method of forming metal, e.g. stamping, embossing, upsetting and welding, comprises setting up a predetermined varying magnetic field and maintaining a metal workpiece to be formed within the magnetic field so that sufficient energy is transferred from the magnetic field to the metal to form the metal in the desired manner. In an embodiment for necking a copper or aluminium tube 20 the varying magnetic field is set up by passing a current pulse through a coil or solenoid 11 surrounding the tube by means of a high capacity condenser 13 in series with switching means 14, e.g. an ignitron, thyratron or spark gap. The tube is held in clamps 21. When a current pulse is applied to the solenoid a varying magnetic field is set up which induces an electromotive force in the workpiece which, in turn, causes a high current to flow around the workpiece. The interaction of the induced current and the magnetic field causes the workpiece to be deformed. A die (not shown), may be inserted in the workpiece to define or limit the deformation. In another embodiment two tubes or a tube and a rod are crimped together by passing a current pulse as hitherto through a loop 22 (Fig. 3). A plurality of spaced loops 22 are used for forming a series of crimps or corrugations in a tube. In another embodiment for impressing a pattern into the surface of a flat metal sheet, the conductor 27 is wound on to a spiral and a die 28 is adjustably supported above the conductor. The metal sheet is placed between the conductor and the die so that when the electromotive force is generated the sheet is forced against the die and the die pattern is embossed on the sheet. In a further embodiment a metal tube is corrugated by placing the tube in a split die 34 having internal corrugations and inserting within the tube a conductor 33 which is supplied with a current pulse to effect the corrugating operation. The spiral type conductor may be used to surface weld a metal sheet to a non- metallic sheet.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US896923XA | 1958-08-28 | 1958-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB896923A true GB896923A (en) | 1962-05-23 |
Family
ID=22219079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29207/59A Expired GB896923A (en) | 1958-08-28 | 1959-08-26 | Improvements in magnetic metal forming devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB896923A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452506A (en) * | 1992-11-05 | 1995-09-26 | Magnet-Physik Dr. Steingroever Gmbh | Process for removing container seals |
| US9726371B2 (en) | 2013-05-08 | 2017-08-08 | Whirlpool Corporation | Glass and metal burner cap and method of making the same |
| CN108723164A (en) * | 2018-05-23 | 2018-11-02 | 华中科技大学 | A kind of heat transfer board forming device and manufacturing process |
| CN109434370A (en) * | 2019-01-20 | 2019-03-08 | 北京工业大学 | A kind of centralising device for magnetic field impulse Guan Yuguan welding |
-
1959
- 1959-08-26 GB GB29207/59A patent/GB896923A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452506A (en) * | 1992-11-05 | 1995-09-26 | Magnet-Physik Dr. Steingroever Gmbh | Process for removing container seals |
| US9726371B2 (en) | 2013-05-08 | 2017-08-08 | Whirlpool Corporation | Glass and metal burner cap and method of making the same |
| CN108723164A (en) * | 2018-05-23 | 2018-11-02 | 华中科技大学 | A kind of heat transfer board forming device and manufacturing process |
| CN108723164B (en) * | 2018-05-23 | 2020-05-19 | 华中科技大学 | Heat transfer plate forming device and forming method |
| CN109434370A (en) * | 2019-01-20 | 2019-03-08 | 北京工业大学 | A kind of centralising device for magnetic field impulse Guan Yuguan welding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2976907A (en) | Metal forming device and method | |
| US4170887A (en) | Inductor for working metals by pressure of pulsating magnetic field | |
| US3961739A (en) | Method of welding metals using stress waves | |
| US3906605A (en) | Process for preparing heat exchanger tube | |
| US3646791A (en) | Method and apparatus for deforming a metal workpiece, for upsetting rivets, and for blind riveting | |
| US3175383A (en) | Magnetic processes | |
| ES8300529A1 (en) | Method of forming integral flanges in a sheet | |
| GB896923A (en) | Improvements in magnetic metal forming devices | |
| US3585709A (en) | Method of making tubular walls from finned pipes | |
| US3251974A (en) | Metal forming apparatus | |
| GB1391079A (en) | Brazing presses particularly for brazing a pressing including curved portions to matching plate | |
| US3824824A (en) | Method and apparatus for deforming metal | |
| US2377974A (en) | Method of upsetting channel edges for welding | |
| US3253443A (en) | Forming device | |
| ES301930A1 (en) | Method and automatic corrugating machine for impressing two intersecting sets of parallel corrugations in sheetmetal stock | |
| US3187532A (en) | Metal-forming devices using direct electrode contact | |
| US3193659A (en) | D-section tubing with welding projections thereon and method of forming the same | |
| GB910963A (en) | Method and apparatus for induction heating to welding temperature | |
| GB778545A (en) | Method and apparatus for making a container body of sheet metal | |
| US3581541A (en) | Method and apparatus for magnetic forming | |
| DE1122188B (en) | Process for deforming conductive, in particular metallic, workpieces in solid form | |
| JPS55156619A (en) | Manufacture of thick-walled steel pipe | |
| US3921426A (en) | Inductor for magnetic-pulse stamping of flat banks | |
| US3587285A (en) | Method of forming welding studs from sheet-like material | |
| GB1109475A (en) | Improvements in and relating to methods of manufacturing mounts for semiconductor devices |