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Seamless tubes

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Published: 01 January 2015
Fig. 9.13 Die drawing seamless tubing. Starting material is an extruded tube hollow free from surface defects. Wall thickness and diameter are reduced by die drawing over a plug or bar mandrel. More
Image
Published: 01 April 2013
Fig. 4 Typical flaws in seamless tubing, (a) blister, (b) gouge, (c) lamination, (d) lap (arrow), (e) pit, (f) plug scores, (g) rolled-in slugs, (h) scab, (i) seam (arrow). Source: Ref 1 More
Image
Published: 01 March 2000
Fig. 17 Principle of seamless tube extrusion More
Image
Published: 01 September 2008
Fig. 26 A 4140 grade steel seamless tubing that failed because of quench cracks. (a) Cross section of tube showing extensive cracking revealed by dye-penetrant inspection. (b) SEM micrograph showing intergranular fracture at a crack origin. Original magnification: 90×. (c) SEM micrograph More
Image
Published: 30 June 2023
Fig. 7.10 Hollow extrusion. (a) Billets for hollow seamless tube production and (b) die setup More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430087
EISBN: 978-1-62708-253-2
.../T9 steel) with additions of vanadium, niobium, and nitrogen, and are the representative grades of this class of steel. Seamless tubes of the SA 213-T91 grade (9Cr-1M0-V steel) can be used up to a maximum temperature of 650 °C (1200 °F) ( Ref 4.2 ). These steels have high strength not only at room...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720345
EISBN: 978-1-62708-305-8
... is the most usual flaw. In all welded tubular products, cracks are the most damaging flaws. In seamless tube, the location of flaws is not restricted, but may occur anywhere in or on the tube section. Extraneous Variables Many of the measurable variables in tubing and pipe are normal to the product...
Image
Published: 01 August 2018
Fig. 14.5 Microstructures obtained with the use of thermomechanical processing in seamless tubes with a basic composition of approx. C = 0.15%, Mn = 1.5%, Si = 0.45% and microalloying additions of vanadium, niobium, and titanium, as indicated in the figures. Samples (a) to (c) present More
Image
Published: 01 March 2000
Fig. 5 Schematic of a direct extrusion press for seamless hollow and tube. 1, counter platen; 2, die slide or rotary die head; 3, shear; 4, billet container; 5, moving crosshead; 6, stem; 7, mandrel; 8, piercer; 9, cylinder crosshead; and 10, oil tank with drive and controls. Source More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480207
EISBN: 978-1-62708-318-8
...-6Al-6V-2Sn, and Ti-5Al-2.5Sn. Various sizes of pipe and tube hollows are also produced, primarily from commercially pure titanium and Ti-3Al-2.5V. Much of this is used in further processing to supply seamless tubing. Pipe up to 510 mm (20 in.) in diameter and 2.5 to 31.8 mm (0.1 to 1.25 in.) wall...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
..., on-line inspections during manufacture, and quality control and testing of the final product. However, forming defects still remain in the tubes if the tube manufacturer has not strictly adhered to the specified fabrication practices or quality control procedures. Forming defects may be in seamless tubes...
Image
Published: 01 December 2018
Fig. 6.115 Transverse cross section of a tube in macroetched condition. It shows the seamless nature of the tube with metal wastage due to corrosion on outer surface. More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340429
EISBN: 978-1-62708-427-7
.... In the early 1970s, Worth , Easton , Louisville Slugger , and other companies entered the market to supply aluminum bats. Bat Forming The distinctive final bat shape ( Fig. 19.2 ) is carefully formed at room temperature from straight length seamless tubes ( Chapter 7 in this book). [1...
Image
Published: 01 April 2013
Fig. 5 Unit used for the probe type eddy current inspection of seamless steel tubing; A, outer cover, containing test head, in open position; B, one of four rotating eddy current probe coils; C, reference standard test piece in position for calibration; D, one of eight paint spray guns More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170193
EISBN: 978-1-62708-297-6
... and miscellaneous purposes for which greater strength or weight savings is important A 618 Hot-formed welded and seamless high-strength low-alloy structural tubing Nb, V, Si, Cu Square, rectangular, round, and special-shape structural welded or seamless tubing Three grades of similar yield strength; may...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340143
EISBN: 978-1-62708-427-7
... in the production of drawn wire or tubing. Extrusions are also used to produce starting billets for either hot or cold forging processes. A hollow extrusion, or tube, can be produced by two methods: seamless or porthole die. A seamless extrusion is fabricated from a billet with a hole in the center ( Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120295
EISBN: 978-1-62708-269-3
..., OR 97321 Tel: 800-394-9979 Fax: 541-928-0596 Precision manufacturer of machined and deep draw formed titanium components and assemblies. Products include seamless nozzles, vessels, tubing, cones, hemispheres, and aerospace components; QA conforms to MIL-1-45208, MIL-Q-9858, and others MSC Industrial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... Abstract The machinery and equipment required for rod and tube extrusion is determined by the specific extrusion process. This chapter provides a detailed description of the design requirements and principles of machinery and equipment for direct and indirect hot extrusion. It then covers...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430290
EISBN: 978-1-62708-253-2
... tips and thinned rupture contours. (b) Transverse sectional view near failure location showing thinning because of metal wastage essentially from outer surface In order to determine the seamless nature of the tube, a sample was cut in a transverse direction followed by etching with 10% ammonium...