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heat exchanger tubes

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Published: 01 January 2002
Fig. 7 Copper-nickel alloy heat-exchanger tubes that failed from denickelification due to attack by water and steam. (a) Etched section through a copper alloy C71000 tube showing dealloying (light areas) around the tube surfaces. Etched with NH 4 OH plus H 2 O. 3.7×. (b) Unetched section More
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Published: 01 January 2002
Fig. 10 Failed admiralty brass heat-exchanger tubes from a refinery reformer unit. The tubes failed by corrosion fatigue. (a) Circumferential cracks on the tension (outer) surface of the U-bends. Approximately 1 1 4 ×. (b) Blunt transgranular cracking from the water side of tube 1. 40× More
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Published: 01 August 2018
Fig. 15 Corrosion in duplex aluminum alloy 3003-H14 heat-exchanger tubes clad with aluminum alloy 7072 on inner surface. (a) Macrograph showing aluminum tube samples removed from the heat-exchanger unit after eddy-current inspection. The outer surface of the tube is at the top. The center two More
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Published: 30 August 2021
Fig. 105 Example of fouling deposits on the inside of heat-exchanger tubes. Fouling greatly reduces heat transfer between the shell-side and tube-side process fluids. More
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Published: 30 August 2021
Fig. 7 Copper-nickel alloy heat-exchanger tubes that failed from denickelification due to attack by water and steam. (a) Etched section through a copper alloy C71000 tube showing dealloying (light areas) around the tube surfaces. Etched with NH 4 OH plus H 2 O. Original magnification: 3.7×. (b More
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Published: 30 August 2021
Fig. 10 Failed admiralty brass heat-exchanger tubes from a refinery reformer unit. The tubes failed by corrosion fatigue. (a) Circumferential cracks on the tension (outer) surface of the U-bends. Original magnification: ~1.25×. (b) Blunt transgranular cracking from the water side of tube 1 More
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Published: 01 December 1998
Fig. 2 Uniform-layer dezincification in an admiralty brass heat-exchanger tube. The top layer of the micrograph, which consists of porous, disintegrated particles of copper, was from the inner surface of the tube that was exposed to water at pH 8.0, 31 to 49 °C (87 to 120 °F), and 207 kPa (30 More
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Published: 01 January 2002
Fig. 8 Copper alloy C44300 heat-exchanger tube that failed by impingement corrosion from turbulent flow of air and condensate along the shell-side surface. (a) Shell-side surface of tube showing damaged area. (b) Damaged surface showing ridges in affected area. 4×. (c) Unetched section through More
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Published: 01 January 2002
Fig. 15 Titanium heat-exchanger tube (ASTM B337, grade 2) that became embrittled and failed because of absorption of hydrogen and oxygen at elevated temperatures. (a) Section of the titanium tube that flattened as a result of test per ASTM B 337; the first crack was longitudinal along the top More
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Published: 01 December 2004
Fig. 19 Siliconized silicon carbide heat-exchanger tube vapor deposited with TiO 2 . Silicon carbide is gray-tan, silicon is yellow, and an iron-nickel-silicon intermetallic is violet. 500×. (R. Crouse) More
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Published: 01 January 2002
Fig. 20 Pitting on the outside of a copper heat exchanger tube More
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Published: 30 August 2021
Fig. 8 Copper alloy C44300 heat-exchanger tube that failed by impingement corrosion from turbulent flow of air and condensate along the shell-side surface. (a) Shell-side surface of tube showing damaged area. (b) Damaged surface showing ridges in affected area. Original magnification: 4×. (c More
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Published: 30 August 2021
Fig. 16 Titanium heat-exchanger tube (ASTM B337, grade 2) that became embrittled and failed because of absorption of hydrogen and oxygen at elevated temperatures. (a) Section of the titanium tube that flattened as a result of test in accordance with ASTM B 337; the first crack was longitudinal More
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Published: 15 January 2021
Fig. 20 Pitting on the outside of a copper heat-exchanger tube More
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Published: 01 January 2003
Fig. 26 Pitting corrosion in Monel tubes from a heat exchanger. Each pit was originally covered by a discrete deposit containing large numbers of SRB. Source: Ref 9 More
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006046
EISBN: 978-1-62708-172-6
... in interior can coatings and tank linings as well as for heat exchanger tube coatings because of their high chemical and thermal resistance. The article concludes with a description of the concerns that a specifier, user, or applicator should be aware of regarding the use of phenolic coatings. bisphenol...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003132
EISBN: 978-1-62708-199-3
..., ranging from various natural and process waters, to seawater, to an extremely broad range of strong and dilute organic and inorganic chemicals. In the automotive and aerospace industries, copper tube is used for hydraulic lines, heat exchangers (such as automotive radiators), air conditioning systems...
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Published: 01 January 1997
Fig. 15 Thick tube sheet with machined groove. Minimizes heat sink differential during welding of thin-walled heat-exchanger tube to the tube sheet. Low-carbon steel base metal; low-carbon steel filler metal. Source: Ref 9 More
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Published: 15 January 2021
Fig. 15 (a) Erosion in copper pipe. (b) Erosion pit with no corrosion product visible. (c) Erosion on the outside diameter of austenitic stainless steel heat-exchanger tube. (d) Section through same tube shown in (c). (e) Section through same tube shown in (c) and etched with electrolytic More
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Published: 01 December 1998
(nickel and nickel alloy tube), E 690 (nonmagnetic heat-exchanger tubes), E 426 (stainless steel tube), and E 309 (steel tube). More