US2871558A - Sheathing uranium - Google Patents
Sheathing uranium Download PDFInfo
- Publication number
- US2871558A US2871558A US681119A US68111946A US2871558A US 2871558 A US2871558 A US 2871558A US 681119 A US681119 A US 681119A US 68111946 A US68111946 A US 68111946A US 2871558 A US2871558 A US 2871558A
- Authority
- US
- United States
- Prior art keywords
- uranium
- metal
- sheathing
- sheathed
- cast
- 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 - Lifetime
Links
- 229910052770 Uranium Inorganic materials 0.000 title description 34
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title description 34
- 229910052751 metal Inorganic materials 0.000 description 24
- 239000002184 metal Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 9
- 238000005266 casting Methods 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005555 metalworking Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
- C22B60/0213—Obtaining thorium, uranium, or other actinides obtaining uranium by dry processes
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/02—Manufacture of fuel elements or breeder elements contained in non-active casings
- G21C21/16—Manufacture of fuel elements or breeder elements contained in non-active casings by casting or dipping techniques
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/06—Casings; Jackets
- G21C3/10—End closures ; Means for tight mounting therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49904—Assembling a subassembly, then assembling with a second subassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Definitions
- SHEATHING URANIUM Filed July 2,41946 smc 'wmsARLS coLmgck d Irventqr States SHEATHING URANIUM
- This invention relates to a method of sheathing uranium which, at least in its purer forms, tends to deteriorate rapidly on contact with air, steam or water.
- uranium when it has been rolled or extruded into the form of rods by drawing down on to these rods protective tubes, there is a wastage of up to 50% of the weight of the original cast metal in machining operations prior to and after extrusion. This wastage is due to the necessity of removing scale, oxides, ⁇ unsound metal etc. from the surface of the crude billets and again from the extruded rods.
- An object of the present invention is to facilitate the working of uranium metal.
- Another object is to facilitate the fabrication'of protectively-sheathed uranium bodies.
- Another object is to provide an improved method of making composite rods of uranium sheathed in another metal.
- sheathed uranium is made by casting molten uranium into a container of protective metal.
- the sheathing operation may be in accordance with the invention, for the primary purpose of facilitating the working of a cast vbillet of uranium to reduce it, for example by extrusion or rolling, to rod or wire or other form of predetermined cross-sectional shape and dimensions, and such working may include heat-treatment in one or more stages for modifying the ductility or for other purpose.
- the sheathing is then an integral part of a uranium metal working process. In such cases, when the uranium metal has been brought to its desired final shape and size, the sheathing metal may be stripped oi by a chemical, electrolytic or mechanical method or by a combination of such methods.
- the sheathing operation may however serve the further purpose of providing a protective skin upon the worked uranium body to be elective during its useful life.
- the sheathing operation may be carried out using a thin-walled container of protective metal conforming to the desired final dimensions ofthe sheathed uranium body.
- working of the cast uranium is unnecessary (although heat treatment may be applied) and the casting of the uranium into the container constitutes a direct method of making a protectively-sheathed shaped uranium body.
- the choice of metal for the container depends upon the functions which the sheathing is required to have and upon the conditions which arise in the casting operaatent c l Q Where it is desired to reduce the diameter of the initial assembly of uranium cast in the container, the sheath metal needs to have a capacity for deformation at roll- 'ing temperature for example 600 or 800 C., approximately equal to that of uranium so that the sheathed product can be readily rolled or extruded. It is also desirable for certain purposes, including the use of the product in an energy-producing pile, that the metal shall have a high thermal conductivity.
- the coefficient of thermal expansion of the sheathing metal should preferably approximate to that of uranium in order that excessive stress shall not arise between the sheath and the core and that cavities shall not be formed between- Convenient metals which have usefully favourable properties are for example copper and its alloys, alumi-l nium and austenitic chromium-nickel stainless steel.
- uranium metal of 99.9% purity.
- This metal is melted in a crucible, e. g. of graphite or thoria, conveniently having a means for bottom pouring, and means for avoiding contact with air is employed such as a flux, or enclosure and evacuation of the apparatus.
- the molten metaly is then poured into a previously prepared sheath of a suitable metal and allowed to solidify.
- the cornposite billet may then be rolled down into rods of say VW-1%" diameter which have on their surfaces a thin lm of say gf-Ma thickness.
- the thickness of the protecting metal sheath into which the molten metal is initially cast can be chosen so as to provide any desired thickness of protective skin in the nished bars.
- uranium is cast directly into thin-walled tubular containers which are thereafter closed and sealed to form composite rods walled cylindrical copper mould 3 split longitudinally to facilitate assembly.
- a graphite crown ring 4 mounted over the open end of the cannister and mould and serves tirstly as a funnel through which molten uranium is poured to lill the cannister and secondly as an upper boundary for the resultant casting.
- a vent 5 in the crown ring allows air to escape from the cannister during the casting operation.
- the exposed surface of the casting tends to be irregular. If the crown ring be omitted, the uranium metal surface presents an irregular peak as indicated in Figure 2. The effect of the crown ring is to localise this peak so that it may more readily be removed by drilling or milling to leave a flat surface ready for a subsequent can-closing operation.
- the irregular surface result* ing from casting with or without the use of the crown ring, may be drilled to present a countersunk or other uniform surface over which is placed an aluminum disc of similar contour and with a flat upper face.
- the irregular surface may be covered with packing material, for example a brazing flux consisting of aluminum-silicon alloy as shown at 6 in Figure 2.
- the cast uranium 7 is shown in a cannister 8 having a closure disc 9.
- the closing of the cannister is then effected in any of the Ways already proposed for sealing previously-machined uranium rods in thin-walled cannisters or in other convenient manner affording ⁇ a gas-tight seal.
- a closure disc of aluminium may be applied and the cannisterV Wall turned over and welded upon it 01- the closure disc may be flanged as shown, in Figure 2 and the seal completed by a peripheral weld between the edges of the cannister and the disc.
- a method of forming a conveniently handled corrosion resistant uranium article comprising pouring molten uranium into an open-ended corrosion resistant metal container in which the metal is selected from the group consisting of copper and its alloys, aluminum, and austenitic-nickel stainless steel, covering the exposed surface of the cast uranium with a metallic packing material,
Description
Feb. 3, v.1959 E. w. coLBEcK 2,871,558..
SHEATHING URANIUM Filed July 2,41946 smc 'wmsARLS coLmgck d Irventqr States SHEATHING URANIUM This invention relates to a method of sheathing uranium which, at least in its purer forms, tends to deteriorate rapidly on contact with air, steam or water. Although it is possible to protect uranium when it has been rolled or extruded into the form of rods by drawing down on to these rods protective tubes, there is a wastage of up to 50% of the weight of the original cast metal in machining operations prior to and after extrusion. This wastage is due to the necessity of removing scale, oxides, `unsound metal etc. from the surface of the crude billets and again from the extruded rods.
An object of the present invention is to facilitate the working of uranium metal.
Another object is to facilitate the fabrication'of protectively-sheathed uranium bodies.
Another object is to provide an improved method of making composite rods of uranium sheathed in another metal.
According to the present invention sheathed uranium is made by casting molten uranium into a container of protective metal.
The sheathing operation may be in accordance with the invention, for the primary purpose of facilitating the working of a cast vbillet of uranium to reduce it, for example by extrusion or rolling, to rod or wire or other form of predetermined cross-sectional shape and dimensions, and such working may include heat-treatment in one or more stages for modifying the ductility or for other purpose. The sheathing is then an integral part of a uranium metal working process. In such cases, when the uranium metal has been brought to its desired final shape and size, the sheathing metal may be stripped oi by a chemical, electrolytic or mechanical method or by a combination of such methods.
The sheathing operation may however serve the further purpose of providing a protective skin upon the worked uranium body to be elective during its useful life.
Alternatively, the sheathing operation may be carried out using a thin-walled container of protective metal conforming to the desired final dimensions ofthe sheathed uranium body. In this case, working of the cast uranium is unnecessary (although heat treatment may be applied) and the casting of the uranium into the container constitutes a direct method of making a protectively-sheathed shaped uranium body. Previous methods of making such sheathed bodies have involved the working and machining to shape ot' the uranium body from an initiallyformed billet with various measures to protect the metal from deterioration followed by either the tting of the uranium Ibody into a pre-formed container with measures to obtain `close continuous contact or the surface treatment of the uranium body with the object of establishing a protective coating.
The choice of metal for the container depends upon the functions which the sheathing is required to have and upon the conditions which arise in the casting operaatent c l Q Where it is desired to reduce the diameter of the initial assembly of uranium cast in the container, the sheath metal needs to have a capacity for deformation at roll- 'ing temperature for example 600 or 800 C., approximately equal to that of uranium so that the sheathed product can be readily rolled or extruded. It is also desirable for certain purposes, including the use of the product in an energy-producing pile, that the metal shall have a high thermal conductivity. Moreover the coefficient of thermal expansion of the sheathing metal should preferably approximate to that of uranium in order that excessive stress shall not arise between the sheath and the core and that cavities shall not be formed between- Convenient metals which have usefully favourable properties are for example copper and its alloys, alumi-l nium and austenitic chromium-nickel stainless steel. Of
these, aluminum while less convenient than copper forl metal working has a reasonably low capture cross-section.
In one method of carrying out this invention, we employ uranium metal of 99.9% purity. This metal is melted in a crucible, e. g. of graphite or thoria, conveniently having a means for bottom pouring, and means for avoiding contact with air is employed such as a flux, or enclosure and evacuation of the apparatus. The molten metaly is then poured into a previously prepared sheath of a suitable metal and allowed to solidify. The cornposite billet may then be rolled down into rods of say VW-1%" diameter which have on their surfaces a thin lm of say gf-Ma thickness.
It is clear that the thickness of the protecting metal sheath into which the molten metal is initially cast can be chosen so as to provide any desired thickness of protective skin in the nished bars.
In another method embodying the invention uranium is cast directly into thin-walled tubular containers which are thereafter closed and sealed to form composite rods walled cylindrical copper mould 3 split longitudinally to facilitate assembly. A graphite crown ring 4 mounted over the open end of the cannister and mould and serves tirstly as a funnel through which molten uranium is poured to lill the cannister and secondly as an upper boundary for the resultant casting. A vent 5 in the crown ring allows air to escape from the cannister during the casting operation.
Because of the rapidity with which the molten metal cools, the exposed surface of the casting tends to be irregular. If the crown ring be omitted, the uranium metal surface presents an irregular peak as indicated in Figure 2. The effect of the crown ring is to localise this peak so that it may more readily be removed by drilling or milling to leave a flat surface ready for a subsequent can-closing operation.
aanwas Various other methods may be employed to reach a level surface. For example the irregular surface result* ing from casting with or without the use of the crown ring, may be drilled to present a countersunk or other uniform surface over which is placed an aluminum disc of similar contour and with a flat upper face. Or the irregular surface may be covered with packing material, for example a brazing flux consisting of aluminum-silicon alloy as shown at 6 in Figure 2. In this figure the cast uranium 7 is shown in a cannister 8 having a closure disc 9.
The closing of the cannister is then effected in any of the Ways already proposed for sealing previously-machined uranium rods in thin-walled cannisters or in other convenient manner affording` a gas-tight seal. For example a closure disc of aluminium may be applied and the cannisterV Wall turned over and welded upon it 01- the closure disc may be flanged as shown, in Figure 2 and the seal completed by a peripheral weld between the edges of the cannister and the disc.
The process details may be modified to yield a sheathed rod of the section shown in Figure 3. After the casting operation the end of the composite rod, including the end of the cannister 8a, is cut back to present a flat surface over which a lid 9a is fitted and brazed or welded in position.
I claim:
A method of forming a conveniently handled corrosion resistant uranium article, comprising pouring molten uranium into an open-ended corrosion resistant metal container in which the metal is selected from the group consisting of copper and its alloys, aluminum, and austenitic-nickel stainless steel, covering the exposed surface of the cast uranium with a metallic packing material,
sealing the container in contact with substantially the entire exposed surface of said packing material, and then mechanically working said article to reduce the cross section thereof.
References Cited in the le of this patent UNITED STATES PATENTS Re. 2,570 Thompson Apr. 16, 1867 Re. 2,571 Thompson Apr. 16, 1867 52,465 Taylor Feb. 6, 1886 139,955 Hall June 17, 1873 338,849 Lorenz Mar. 30, 1886 666,452 Zucker Jan. 22, 1901 909,924 Monnot Jan. 19, 1909 1,162,339 Coolidge Nov. 30, 1915 1,568,685 Moore Ian. 5, 1926 1,597,189 Gero Aug. 24, 1926 1,648,962 Rentschler et al Nov. 15, 1927 1,733,744 Marden et al. Oct. 29, 1929 FOREIGN PATENTS 861,390 France Feb. 7, 1941 233,011 Switzerland Oct, 2, 1944 OTHER REFERENCES Driggs et al.: Preparation of Metal Powders by Electrolysis of Fused Salts I-Ductile Uranium, Ind. and Eng. Chem., vol. 22, No. 5, pp. 516-519, May 1930.
Business Week, pp. 57-64, Sept. 1.945.
Smyth: Atomic Energy for Military Purposes, p. 103, Aug. 1945. Copy may be purchased from Supt. of Doc., Wash. 25, D. C.
Kelly et al.: Physical Review 73, 1135-9 (1948).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US681119A US2871558A (en) | 1946-07-02 | 1946-07-02 | Sheathing uranium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US681119A US2871558A (en) | 1946-07-02 | 1946-07-02 | Sheathing uranium |
Publications (1)
Publication Number | Publication Date |
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US2871558A true US2871558A (en) | 1959-02-03 |
Family
ID=24733914
Family Applications (1)
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US681119A Expired - Lifetime US2871558A (en) | 1946-07-02 | 1946-07-02 | Sheathing uranium |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3024181A (en) * | 1959-10-30 | 1962-03-06 | Robert C Howard | Fuel element |
US3086934A (en) * | 1959-07-31 | 1963-04-23 | Atomic Energy Authority Uk | Fuel elements for nuclear reactors |
US3118819A (en) * | 1958-11-18 | 1964-01-21 | Commissariat Energie Atomique | Nuclear fuel cartridge |
US3141227A (en) * | 1958-09-29 | 1964-07-21 | Gen Electric | Method of nuclear fuel and control element fabrication |
US3157540A (en) * | 1960-05-31 | 1964-11-17 | Engelhard Ind Inc | High pressure process for improving the mechanical properties of metals |
US4815652A (en) * | 1988-02-12 | 1989-03-28 | Kvavle Robert C | Method for forming composite metal articles |
US4901906A (en) * | 1988-02-12 | 1990-02-20 | Kvavle Robert C | Method for forming composite metal articles |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US52465A (en) * | 1866-02-06 | Improvement in putting up caustic alkali | ||
US139955A (en) * | 1873-06-17 | Improvement in packages for caustic soda or alkali | ||
US338849A (en) * | 1886-03-30 | Wilhblm loeenz | ||
US666452A (en) * | 1900-10-25 | 1901-01-22 | George Zucker Company | Package. |
US909924A (en) * | 1907-04-24 | 1909-01-19 | Duplex Metals Company | Compound metal body and process of producing same. |
US1162339A (en) * | 1912-08-21 | 1915-11-30 | Gen Electric | Method of making composite metal bodies. |
US1568685A (en) * | 1923-03-02 | 1926-01-05 | Gen Electric | Purification of highly-oxidizable metals |
US1597189A (en) * | 1921-01-11 | 1926-08-24 | Westinghouse Lamp Co | Method of cold-drawing refractory materials |
US1648962A (en) * | 1922-08-22 | 1927-11-15 | Westinghouse Lamp Co | Method of preparing uranium in a coherent mass |
US1733744A (en) * | 1926-01-16 | 1929-10-29 | Westinghouse Lamp Co | Composite x-ray target |
FR861390A (en) * | 1939-07-28 | 1941-02-07 | Methods and devices for using the thermal energy released during atomic decompositions | |
CH233011A (en) * | 1939-05-01 | 1944-06-30 | Centre Nat Rech Scient | Device for transforming nuclear energy into another form of energy. |
-
1946
- 1946-07-02 US US681119A patent/US2871558A/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US52465A (en) * | 1866-02-06 | Improvement in putting up caustic alkali | ||
US139955A (en) * | 1873-06-17 | Improvement in packages for caustic soda or alkali | ||
US338849A (en) * | 1886-03-30 | Wilhblm loeenz | ||
US666452A (en) * | 1900-10-25 | 1901-01-22 | George Zucker Company | Package. |
US909924A (en) * | 1907-04-24 | 1909-01-19 | Duplex Metals Company | Compound metal body and process of producing same. |
US1162339A (en) * | 1912-08-21 | 1915-11-30 | Gen Electric | Method of making composite metal bodies. |
US1597189A (en) * | 1921-01-11 | 1926-08-24 | Westinghouse Lamp Co | Method of cold-drawing refractory materials |
US1648962A (en) * | 1922-08-22 | 1927-11-15 | Westinghouse Lamp Co | Method of preparing uranium in a coherent mass |
US1568685A (en) * | 1923-03-02 | 1926-01-05 | Gen Electric | Purification of highly-oxidizable metals |
US1733744A (en) * | 1926-01-16 | 1929-10-29 | Westinghouse Lamp Co | Composite x-ray target |
CH233011A (en) * | 1939-05-01 | 1944-06-30 | Centre Nat Rech Scient | Device for transforming nuclear energy into another form of energy. |
FR861390A (en) * | 1939-07-28 | 1941-02-07 | Methods and devices for using the thermal energy released during atomic decompositions |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3141227A (en) * | 1958-09-29 | 1964-07-21 | Gen Electric | Method of nuclear fuel and control element fabrication |
US3118819A (en) * | 1958-11-18 | 1964-01-21 | Commissariat Energie Atomique | Nuclear fuel cartridge |
US3086934A (en) * | 1959-07-31 | 1963-04-23 | Atomic Energy Authority Uk | Fuel elements for nuclear reactors |
US3092565A (en) * | 1959-07-31 | 1963-06-04 | Atomic Energy Authority Uk | Fuel elements for nuclear reactors |
US3024181A (en) * | 1959-10-30 | 1962-03-06 | Robert C Howard | Fuel element |
US3157540A (en) * | 1960-05-31 | 1964-11-17 | Engelhard Ind Inc | High pressure process for improving the mechanical properties of metals |
US4815652A (en) * | 1988-02-12 | 1989-03-28 | Kvavle Robert C | Method for forming composite metal articles |
US4901906A (en) * | 1988-02-12 | 1990-02-20 | Kvavle Robert C | Method for forming composite metal articles |
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