1-20 of 261 Search Results for

high-frequency welding

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 June 1988
Fig. 10.19 Schematic illustration of facility utilizing high-frequency welding for fabrication of structural members. A-uncoilers and flatteners. B-cut flange feeder. C-web upsetter. D-flange prebender. E-welder, one each side. F-cooling zone. G-straighteners, longitudinal and flange. H More
Image
Published: 01 November 2011
Fig. 4.9 Joining a tube seam by high-frequency induction welding. Source: Ref 4.5 More
Image
Published: 01 June 1988
Fig. 6.26 Eddy-current path in high-frequency induction welding of tubular products. From C. A. Tudbury, Basics of Induction Heating , Vol 1, John F. Rider, Inc., New York, 1960 ( Ref 2 ) More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290079
EISBN: 978-1-62708-306-5
... Abstract This chapter discusses the fusion welding processes, namely oxyfuel gas welding, oxyacetylene braze welding, stud welding (stud arc welding and capacitor discharge stud welding), high-frequency welding, electron beam welding, laser beam welding, hybrid laser arc welding, and thermit...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220315
EISBN: 978-1-62708-341-6
... Welding The use of high-frequency induction and resistance heating for tube welding also appears very attractive from a cost viewpoint. Not only is the cost per unit of product considerably less with these techniques than with submerged-arc welding (SAW) and fluxed-cored arc welding (FCAW...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220085
EISBN: 978-1-62708-341-6
... 0.041 0.020 (a) 1 in. = 25.4 mm. Fig. 6.1 Relationship between diameter of round steel bars and minimum generator frequency for efficient austenitizing using induction heating. From F. W. Curtis, High Frequency Induction Heating , McGraw-Hill, New York. 1950 ( Ref 3 ) When...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220001
EISBN: 978-1-62708-341-6
...). Advantages specific to induction melting as compared with other melting processes include a natural stirring action (giving a more uniform melt) and long crucible life. Welding, Brazing, and Soldering High-frequency induction welding offers substantial energy savings because heat is localized...
Image
Published: 01 March 2002
3 32 in. (2.38 mm) diam EWTh-2, tapered to 0.025 in. (0.635 mm) diam Electrode extension ¼ in. (6.35 mm) Arc starting High frequency Current (DCEN):  First weld 65–70 A  Second weld 70 A Voltage (both welds) 9–9½ V Welding speed:  First weld 11 in./min (279 mm More
Image
Published: 01 March 2002
-2 Torch 300 A, water cooled Filler metal 0.035 in. (0.889 mm) diam Inconel 718 Shielding gas Argon at 15–18 ft 3 /h (7.1–8.5 L/min) Current 50–55 A (DCEN) Voltage 10–12 V Arc starting High frequency Arc length 0.040 in. (1.02 mm) (approx) Welding speed 60 in./min More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930085
EISBN: 978-1-62708-359-1
...-particle testing of a weld with an electromagnet Prod magnetization, in which electrodes carrying a high-amperage, low-voltage current are pressed onto the test surface to induce a distorted, circular magnetic field, provides the most controlled method of magnetization. Although the electrodes can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720345
EISBN: 978-1-62708-305-8
... line. The frequency of variation usually corresponds to weld-current variation. Increased use of ultrahigh frequency current for welding has minimized the occurrence of stitching. The nondestructive inspection of resistance welded tube can be performed continuously on a welding machine...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720267
EISBN: 978-1-62708-305-8
... Abstract Ultrasonic inspection is a nondestructive method in which beams of high frequency acoustic energy are introduced into a material to detect surface and subsurface flaws, to measure the thickness of the material, and to measure the distance to a flaw. This chapter begins with an overview...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
...-frequency high-amplitude stresses are attributed to boiler cycling. Defective tube-to-tube welds or tube-to-manifold welds that are subjected to vibrations on account of inadequate supports are areas where failure due to mechanical fatigue is most common. Thermal Fatigue Thermal fatigue is defined...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310201
EISBN: 978-1-62708-286-0
... when contemplating the use of spot welds in stainless materials. The possibility of entrapment of foreign material and the difficulty of removing it from such crevices should also be considered, especially in equipment for food handling, pharmaceutical production, etc. High-Frequency Induction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930353
EISBN: 978-1-62708-359-1
... strength and ductility are required. Niobium alloys are best welded in vacuum-purged chambers backfilled with argon, helium, or a mixture of both. Direct current electrode negative should be used. High-frequency arc initiation should be used to avoid tungsten electrode contamination. Tungsten...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220185
EISBN: 978-1-62708-341-6
...; the resulting pattern is shown schematically in Fig. 8.2 . This effect is more pronounced in high-frequency induction heating. At the point where the leads and coil join, the magnetic field is weaker; therefore, the magnetic center of the inductor (along the axial direction) is not necessarily the geometric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... limits are 10% and 30 J (22 ft·lbf) minimum, respectively. 6.9 Ultrasonic Welding Ultrasonic welding is used effectively for joining both similar and dissimilar metals with lap joint welds. High-frequency vibrations, introduced into the areas to be joined, disrupt the metal atoms at the interface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090359
EISBN: 978-1-62708-266-2
.... Evaluation of the frequency characteristics of the reflected wave form was of prime concern. The small size and tightness of the cracks in the BWR piping suggested that they could best be detected using relatively high frequencies. However, investigation proved otherwise. Frequency spectrum analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440159
EISBN: 978-1-62708-262-4
.... The depth of current penetration depends on workpiece permeability, resistivity, and the alternating current frequency. Because the first two factors vary comparatively little, the greatest variable is frequency. Depth of current penetration decreases as frequency increases. High-frequency current generally...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290023
EISBN: 978-1-62708-306-5
... contamination, its use is generally limited to special applications, such as the joining of stainless steels, and to plasma arc cutting and gouging. Nitrogen is generally considered to be inert except at high temperatures. At arc welding temperatures, it will react with some metals (e.g., aluminum...