Search Results for steel tubes

Fig. 9 Uniform corrosion of steel tubes in boiler feedwater containing oxygen (O 2 ) and a chelating water-treating chemical More

Fig. 16 Pitting on the outside surface of type 316 stainless steel tubes, with downward propagation. Source: Ref 20 More

Fig. 5 Representative microstructures of carbon steel tubes. (a) Lamellar pearlite of a tube before service. (b) Spheroidization of iron carbide (Fe 3 C) in steel tube after exposure to long heating at 540 °C (1000 °F). (c) Graphitization that occurred in a carbon steel component More

Fig. 4 Edge joints in thin type 304 stainless steel tubes. Courtesy of Edison Welding Institute More

Fig. 8 Cross sections from welds of type 409 stainless steel tubes after high-frequency (HF) welding at different temperatures. (a) Excessive weld temperature results in melting and a fusion zone. (b) and (c) Good welds with sufficient heating and formation of a sound solid-state weld. (d More

Fig. 9 Uniform corrosion of steel tubes in boiler feedwater containing oxygen (O 2 ) and a chelating water-treating chemical More

Fig. 16 Pitting on the outside surface of type 316 stainless steel tubes, with downward propagation. Source: Ref 20 More

Fig. 14 Stainless steel and titanium tubes brazed to titanium plate in vacuum using BAg-8a filler metal in the form of 1.6 mm wire ring placed inside the tubes. Titanium and steel tubes 12.5 mm (0.49 in.) in diameter, 1.2 mm (0.05 in.) wall thickness; titanium plate 50 × 18 × 1.6 mm (1.97 More

Fig. 2 Torch-brazed assembly of a stainless steel tube and a pure nickel tube More

Fig. 9 Microstructures of specimens from carbon steel boiler tubes subjected to prolonged overheating below Ac 1 . (a) Voids (black) in grain boundaries and spheroidization (light, globular), both of which are characteristic of tertiary creep. 250×. (b) Intergranular separation adjacent More

Fig. 10 Typical microstructures of 0.18% C steel boiler tubes that ruptured as a result of rapid overheating. (a) Elongated grains near tensile rupture resulting from rapid overheating below the recrystallization temperature. (b) Mixed structure near rupture resulting from rapid overheating More

Fig. 13 Superheater tubes made of chromium-molybdenum steel (ASME SA-213, grade T-11) that ruptured because of overheating. (a) Tube that failed by stress rupture. (b) Resultant loss of circulation and tensile failure More

Fig. 29 Pitting and stress corrosion in type 316 stainless steel evaporator tubes. (a) Rust-stained and pitted area near the top of the evaporator tube. Not clear in the photograph, but visually discernible, are myriads of fine, irregular cracks. (b) Same area shown in (a) but after dye More

Fig. 19 Torque tube details. (a) Steel yoke used in torque tubes. (b) Cross section of the torque-carrying joint. (c) Behavior of a tube subjected to torque overload testing. Failure is outside the joint region. More

Fig. 12 Stainless steel type 304 beverage can filling nozzle. Tubes are vacuum brazed with a nickel brazing filler metal at 1120 °C (2050 °F). Left, location where paste alloy is placed around tube. Right, completed nozzle, showing smooth, void-free fillets. Courtesy of Wall Colmonoy More

Fig. 27 Pitting and stress corrosion in 316 stainless steel evaporator tubes. (a) Rust-stained, pitted area near the top of the tube. While not clear in the photograph, many fine, irregular cracks are visually discernable. (b) Same area shown in (a) after dye penetrant application to delineate More

Fig. 13 Flow-accelerated corrosion of carbon steel feedwater heater tubes. Courtesy of Jonas, Inc. More

Fig. 7 Carbon steel superheater tubes protected by metallic tube shields awaiting installation at one waste-to-energy plant More

Fig. 47 Optical micrograph of stainless steel tube showing a band of precipitates and cracks formed during stress-rupture testing. Arrows A and B indicate representative locations of subsequently prepared TEM specimens. More

Fig. 3 A6 tool steel tube-bending-machine shaft that failed by fatigue fracture. Section A-A: Original and improved designs for fillet in failure region. Dimensions are in inches. View B: Fracture surface showing regions of fatigue-crack propagation and final fracture More