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5704993 |
High conductivity composite metal
Electrical conductors and methods of producing them, where the conductors possess both high strength and high conductivity. Conductors are comprised of carbon steel and a material chosen from a...
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5679470 |
Process for manufacturing clad composite stent
A body compatible stent is formed of multiple filaments arranged in two sets of oppositely directed helical windings interwoven with one another in a braided configuration. Each of the filaments is...
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5626693 |
Method and apparatus for quenching a tubular workpiece
This invention provides a method and apparatus for quenching a tubular workpiece such as cylindrical tubes or different-shaped tubes, which are difficult to be exerted constraining force for...
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5622574 |
Product externally alloyed with ZR, method for manufacture of same, and use of same
A product having at least an exterior surface formed by a Zr alloy comprising the following addition elements (% by weight): Sn 0.40 to 1.70, Fe 0.05 to 0.25, Cr 0.03 to 0.16, Ni less than 0.08;...
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5620536 |
Manufacture of zirconium cladding tube with internal liner
A method of manufacturing nuclear fuel elements which include fuel rods whose cladding tubes are provided with an internal liner layer to obtain PCT resistance in the nuclear fuel element involves...
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5609697 |
Process for the production of a tubular zircaloy 2 blank internally clad with zirconium and suitable for ultrasound monitoring of the zirconium thickness
The invention concerns a process for the production of a tubular zircaloy 2 blank which is internally clad with zirconium for use in producing composite cladding tubes for nuclear fuel. The...
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5524342 |
Methods for shrinking nickel articles
A method is disclosed for heating a portion of an article comprised of nickel, formed by electrodeposition, and possessing an internal stress sufficient to shrink the outer cross-sectional...
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5519748 |
Zircaloy tubing having high resistance to crack propagation
A Zircaloy cladding having an outer region comprising fine precipitates and inner region comprising coarse precipitates is provided. The outer region comprises about 10% and the inner region...
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5507888 |
Bicycle frames and aluminum alloy tubing therefor and methods for their production
Methods for making an aluminum alloy bicycle frame and for making tubes for such frames including use of an aluminum alloy containing about 0.5 to 1.3% magnesium, about 0.4 to 1.2% silicon, and...
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5437747 |
Method of fabricating zircalloy tubing having high resistance to crack propagation
In a zirconium-alloy fuel element cladding, a method for generating regions of coarse and fine intermetallic precipitates across the cladding wall is provided. The method includes steps of specific...
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5405459 |
Production process for producing hollow steel tube of high strength
A production process for producing a hollow steel tube of a high strength includes the steps of a tube preparation step of producing a seamless steel tube of a heavy thickness containing flaws of...
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5388319 |
Method for making organism deposit-inhibiting pipe
The invention provides a method for making an organism deposit-inhibition pipe, which excels in corrosion resistance, dispenses with maintenance work, and offers no toxicity problems. A thin sheet...
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5304261 |
Method of fabricating a channel box or other part for a nuclear reactor
In a method of fabricating a channel box for use in a nuclear reactor, Zr-alloy sheet material is formed into a tubular channel box. The method includes solution heat treatment of the Zr-alloy...
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5192376 |
Process for producing automobile body reinforcing steel pipe
An automobile body reinforcing steel pipe having a wall thickness-to-outer diameter ratio, t/D, defined by: 0.09-4.8×10 -5 ×L≤t/D≤0.16-6.0×10 -5 ×L where L(mm) is a span of a bending...
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5076488 |
Silicon grain refinement of zirconium
The present invention relates to the control of grain structure in unalloyed zirconium metal and, more particularly, to the control of grain structure in zirconium metals containing less than 300...
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5073208 |
Method for cryogenic treatment of Coriolis mass flow meter structures
A method for increasing stability of a Coriolis mass flow meter by relieving residual and internal stress within the flow tube and related structures of the meter. The method including the steps of...
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5022931 |
Process for hot working article defining hole at the center thereof
A process for hot working a tubular material having one open end and the other closed end including the steps of: injecting an inert gas into the hole of the material; then fastening a cap to the...
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5015828 |
System and method for stress-relief of welds in heat exchanger tubes
Both a system and method for simultaneously heat treating a plurality of heat exchanger tubes in the tubesheet of a steam generator are disclosed herein. The system generally comprises a plurality...
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4885044 |
Method of controlling hardness of pipe weld-joints by radially inserting insulating rings prior to tempering heat-treatment
A process is provided for heat treating an annular martensitic heat-affected zone. The heat-affected zone is commonly created in the outer segment of a pipeline wall as a result of applying a...
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4820359 |
Process for thermally stress-relieving a tube
A process for thermally stress-relieving a stressed portion of a metallic tube is disclosed herein. The process generally comprises the steps of inserting a small diameter radiant heater into the...
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4726856 |
Method for heat treating metal pipes
An effective method for heat treating metal pipe lines and especially a metal pipe line whose construction is so complicated as to tend to leave an air pocket therein.
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4690716 |
Process for forming seamless tubing of zirconium or titanium alloys from welded precursors
Seamless tubing is formed from welded precursors of zirconium or titanium material by heating successive axial segments of welded tubing completely through the wall of the tubing to convert the...
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4596282 |
Heat treated high strength bimetallic cylinder
A high strength bimetallic cylinder having a wear-resistant ferrous liner or inlay and capable of withstanding high stresses is provided by a heat treatment process wherein the cylinder steel is...
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4576654 |
Heat treated tube
There is provided a nuclear fuel element having a zirconium alloy cladding tube with improved corrosion resistance. The cladding tube comprises a metallurgical gradient across the width of the tube...
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4544523 |
Cladding method for producing a lined alloy article
A method for producing an alloy article, such as a valve or valve component, and an assembly for use therewith. The article is produced by hot isostatic compacting wherein a lining of prealloyed...
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4497673 |
Method of manufacturing double-walled tube
A double-walled tube is produced by providing an inner core tube and an outer casing tube, wherein the outer diameter of the inner core tube is smaller than the inner diameter of the outer casing...
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4448615 |
Method of spot annealing tubing
In the manufacture of tubing, and particularly finned tubing, for use by the heat transfer industry in the manufacture of heat exchangers, annealed ends and lands are desirable in certain...
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4390497 |
Thermal-mechanical treatment of composite nuclear fuel element cladding
Cladding for nuclear fuel elements which is formed with a zirconium metal barrier layer bonded to the inside surface of a zirconium alloy tube and which is sized by a cold working tube reduction...
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4326897 |
Post weld heat treatment of shell and tube heat exchangers and apparatus
An apparatus and method is provided for heat treating a tubular type heat exchanger. A heat fluid is passed through the tube bundle in order to heat the exchanger from within.
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4210467 |
Method of making a reinforcement for vehicle doors
A tubular reinforcing element for the interior of vehicle doors is made from a steel tube having a carbon content of 0.14-0.18%, 0.15-0.30% silicon, 1.60-1.80% manganese, 1.90-2.10% chromium,...
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4020312 |
Method of manufacturing thick, high-strength steel pipe for low temperature service
A method of manufacturing a thick, high-strength steel pipe for low temperature service comprising the steps of forming into tubular shape a steel plate having a thickness of over 12 mm and a...
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4016008 |
Clad metal tubes
A method for producing high strength composite tubing having a corrosion-resistant metal lining. The composite tubing is prepared by extrusion of an assembly having a low alloy steel outer shell...
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3900939 |
Method of plugging steam generator tubes
A method for plugging the ends of defective tubes in shell and tube heat exchangers is described. The plug utilized in the method is fabricated from a metallic alloy having a mechanical memory...
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3872573 |
Process and apparatus for making heat recoverable composite couplings
Described herein is a process and apparatus for making a composite coupling useful in joining cylindrical substrates such as tubing. The composite coupling joins the cylindrical substrate by heat...
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3867212 |
COMPOSITE MATERIAL, TUBING MADE FROM THE MATERIAL, AND METHODS FOR MAKING THE MATERIAL AND TUBING
A strip of composite metal laminate material embodying a thin inner layer of stainless steel sandwiched between and metallurgically bonded to two relatively thicker outer layers of low carbon steel...
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3795970 |
PROCESSES FOR EXTRUDING A PRODUCT
Method of forming a product from a preform including a body of first predetermined material provided with a predetermined physical configuration and at least one aperture, and further including a...
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3769691 |
METHOD OF MAKING TUBULAR LAMINATED ARTICLE
A tubular laminated article constructed in accordance with the present invention can be adopted to function in many different ways in different assemblies. Included among these assemblies is a...
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3728782 |
PROCESS FOR THE PRODUCTION OF STRAIGHT-BEAD WELDED PIPE
Straight-bead welded pipe with an entirely homogeneous gain structure is produced by plastic deformation of the welded pipe, specifically in the area of the weld seam, to substantially destroy the...
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3465567 |
METHOD OF MAKING TUBES
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3466166 |
METHOD FOR MAKING A HOLLOW METAL ARTICLE
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2944925 |
Method of coating hot-dip galvanized pipe
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2827404 |
Elastic sheath cables
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3694271 |
Title is not available
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3708354 |
Title is not available
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