GB878178A - Metal forming - Google Patents
Metal formingInfo
- Publication number
- GB878178A GB878178A GB4085259A GB4085259A GB878178A GB 878178 A GB878178 A GB 878178A GB 4085259 A GB4085259 A GB 4085259A GB 4085259 A GB4085259 A GB 4085259A GB 878178 A GB878178 A GB 878178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gel
- tube
- die
- explosive
- die holder
- 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
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
- B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
Abstract
878,178. Making corrugated tubes; stamping; altering physical properties. OLIN MATHIESON CHEMICAL CORPORATION. Dec. 1, 1959, No. 40852/59. Classes 83 (2) and 83 (4). A method of working metals with explosives is characterized by transmitting the force of an explosive charge to a metal through a gel. In an embodiment a metal tube 27 is filled with a gelatinous solution and permitted to stand until its phase changes to a gel 5. The gelfilled tube is placed on a split die 11 mounted within a die holder 13. An explosive charge 22 and a detonator 23 is placed in a bore 21 in the die holder and the die holder is placed within clamping means (not shown). When the charge is ignited the explosive force is transmitted through the gel 5 to expand the tube into the die cavities 12 and 17. Discs 16 and 19 on the die holder act as bleeding means to relieve the contained pressure within the assembly. A reversible gel may be used so that it may be recovered and re-used many times. In another embodiment the explosive is suspended in the gel as shown in Fig. 2. Resilient cup-shaped obturating seals 34 and 35 (Fig. 7) are preferably placed in the ends of the tube to prevent loss of gel. In a further embodiment a metal sheet 51 is placed against a cupping die 49 mounted on a holder 41 containing a chamber 42, and a breech mechanism 47 for receiving a cartridge 48. A gelatinous solution is poured into the chamber 42 and allowed to gel. Alternatively, the gel may be preformed to the shape of the chamber and handled as a solid. In a modification, the explosive charge is embedded in the gel. A tube having complex curvatures may be formed with bulged portions by filling the tube with a gel as hitherto, and placing the tube in a die 66 (Fig. 11) having cavities 61 and a breech mechanism 64. In another embodiment the tube is formed against a mandrel 68 or 74 (Figs. 12 and 13) having a screw-thread or ribbed configuration. The mandrel is formed of a material having a lower melting point than the tube, e.g. woods metal or aluminium, to enable the mandrel to be melted from within the tube after the forming operation. A door knob is formed by the method of the invention using a closed ended tube 79 filled with gel and placed between dies 83 (Fig. 14). Similarly, a tumbler-shaped container is formed from a gel-filled tube 79, the open end of which contains a resilient obturating sealing member 82 (Fig. 16). In an example, the explosive powder is prepared by impregnating 80% by weight of nitrocellulose with 20% by weight of nitroglycerine. The gelatinous solution is prepared by mixing 20% by weight of gelatin derived from animal protein in water with agitation. Sodium benzoate and an anti-foaming agent are added to the colloidal solution.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4085259A GB878178A (en) | 1959-12-01 | 1959-12-01 | Metal forming |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4085259A GB878178A (en) | 1959-12-01 | 1959-12-01 | Metal forming |
Publications (1)
Publication Number | Publication Date |
---|---|
GB878178A true GB878178A (en) | 1961-09-27 |
Family
ID=10416931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4085259A Expired GB878178A (en) | 1959-12-01 | 1959-12-01 | Metal forming |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB878178A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498762A (en) * | 1946-07-13 | 1950-02-28 | United Shoe Machinery Corp | Sole fitting machine |
WO2008080502A1 (en) * | 2006-12-20 | 2008-07-10 | Cosma Engineering Europe Ag | Workpiece and method for explosion forming |
US20100326158A1 (en) * | 2008-01-31 | 2010-12-30 | Andreas Stranz | Device for explosive forming |
US8047036B2 (en) | 2005-06-03 | 2011-11-01 | Magna International Inc. | Device and method for explosion forming |
CN102489582A (en) * | 2011-11-18 | 2012-06-13 | 吉林大学 | Flexible forming method of variable cross-section special-shaped piece with closed cavities |
US8250892B2 (en) | 2006-12-01 | 2012-08-28 | Cosma Engineering Europe Ag | Closure device for explosion forming |
US8252210B2 (en) | 2006-08-11 | 2012-08-28 | Cosma Engineering Europe Ag | Method and device for explosion forming |
US8443641B2 (en) | 2007-02-14 | 2013-05-21 | Cosma Engineering Europe Ag | Explosion forming system |
US8650921B2 (en) | 2006-08-11 | 2014-02-18 | Cosma Engineering Europe Ag | Method and device for explosion forming |
US8875553B2 (en) | 2007-02-14 | 2014-11-04 | Cosma Engineering Europe Ag | Method and mould arrangement for explosion forming |
US8939743B2 (en) | 2007-08-02 | 2015-01-27 | Cosma Engineering Europe Ag | Device for supplying a fluid for explosion forming |
US20150240374A1 (en) * | 2012-12-07 | 2015-08-27 | Apple Inc. | Electroformed housings and methods for making the same |
US9393606B2 (en) | 2007-05-22 | 2016-07-19 | Cosma Engineering Europe Ag | Ignition device for explosive forming |
CN108927439A (en) * | 2018-06-21 | 2018-12-04 | 江西嘉陶无机材料有限公司 | A kind of material billow forming processing method based on chemical reaction |
WO2022240605A1 (en) * | 2021-05-14 | 2022-11-17 | Savannah River Nuclear Solutions, Llc | Tooling assembly and method for explosively forming features in a thin-walled cylinder |
-
1959
- 1959-12-01 GB GB4085259A patent/GB878178A/en not_active Expired
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498762A (en) * | 1946-07-13 | 1950-02-28 | United Shoe Machinery Corp | Sole fitting machine |
US8047036B2 (en) | 2005-06-03 | 2011-11-01 | Magna International Inc. | Device and method for explosion forming |
US8650921B2 (en) | 2006-08-11 | 2014-02-18 | Cosma Engineering Europe Ag | Method and device for explosion forming |
US8252210B2 (en) | 2006-08-11 | 2012-08-28 | Cosma Engineering Europe Ag | Method and device for explosion forming |
US8250892B2 (en) | 2006-12-01 | 2012-08-28 | Cosma Engineering Europe Ag | Closure device for explosion forming |
US8322175B2 (en) | 2006-12-20 | 2012-12-04 | Cosma Engineering Europe Ag | Workpiece and method for explosion forming |
WO2008080502A1 (en) * | 2006-12-20 | 2008-07-10 | Cosma Engineering Europe Ag | Workpiece and method for explosion forming |
US9737922B2 (en) | 2007-02-14 | 2017-08-22 | Magna International Inc. | Explosion forming system |
US8875553B2 (en) | 2007-02-14 | 2014-11-04 | Cosma Engineering Europe Ag | Method and mould arrangement for explosion forming |
US8443641B2 (en) | 2007-02-14 | 2013-05-21 | Cosma Engineering Europe Ag | Explosion forming system |
US9393606B2 (en) | 2007-05-22 | 2016-07-19 | Cosma Engineering Europe Ag | Ignition device for explosive forming |
US8939743B2 (en) | 2007-08-02 | 2015-01-27 | Cosma Engineering Europe Ag | Device for supplying a fluid for explosion forming |
US8713982B2 (en) * | 2008-01-31 | 2014-05-06 | Magna International Inc. | Device for explosive forming |
US20100326158A1 (en) * | 2008-01-31 | 2010-12-30 | Andreas Stranz | Device for explosive forming |
CN102489582A (en) * | 2011-11-18 | 2012-06-13 | 吉林大学 | Flexible forming method of variable cross-section special-shaped piece with closed cavities |
US20150240374A1 (en) * | 2012-12-07 | 2015-08-27 | Apple Inc. | Electroformed housings and methods for making the same |
US10196750B2 (en) * | 2012-12-07 | 2019-02-05 | Apple Inc. | Electroformed housings and methods for making the same |
CN108927439A (en) * | 2018-06-21 | 2018-12-04 | 江西嘉陶无机材料有限公司 | A kind of material billow forming processing method based on chemical reaction |
CN108927439B (en) * | 2018-06-21 | 2019-09-27 | 江西嘉陶无机材料有限公司 | A kind of material billow forming processing method based on chemical reaction |
WO2022240605A1 (en) * | 2021-05-14 | 2022-11-17 | Savannah River Nuclear Solutions, Llc | Tooling assembly and method for explosively forming features in a thin-walled cylinder |
US11628485B2 (en) | 2021-05-14 | 2023-04-18 | Battelle Savannah River Alliance, LLC. | Tooling assembly and method for explosively forming features in a thin-walled cylinder |
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