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leak-tight seam welding

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Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001365
EISBN: 978-1-62708-173-3
..., reinforced roll spot welding, and leak-tight seam welding. It provides information on the applications of lap seam weld, mash seam weld, and butt seam weld. The article reviews the advantages and limitations of seam welding compared to resistance spot welding, projection welding, and laser welding...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005608
EISBN: 978-1-62708-174-0
... parameters. Working values should be chosen that are not too near the extreme limits of the material, the weld tool, or the plant facilities. To make leak-tight seams, weld spots should have approximately equal length and width. Ideally, the same welding parameters should be used for the entire length...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... with a coefficient of expansion comparable to austenitic stainless steel but with a much higher yield strength. Use of material conforming to SA-453 permitted tightening the nuts on the studs to a torque load that would maintain tightness at the operating temperature. Preparation of joint surfaces before welding...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006561
EISBN: 978-1-62708-210-5
.... It is used for castings requiring leak tightness and moderate strength. Aluminum 308.0 can be machined easily. Both high-speed steel and cemented carbide lathe tools should be ground to 55–70° cutting angles, 5–25° top rake, 5–10° side rake, 6–10° side clearance, and 6–10° front clearance. With high...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003621
EISBN: 978-1-62708-182-5
.... Others have stress-relieved welded carbon steel systems and have operated successfully, although elevated-temperature excursions are discouraged. SCC in Oil Refineries Leaking Carbon Steel Weldments in a Sulfur Recovery Unit Corrosion of Welds in Carbon Steel Deaerator Tanks Weld Cracking...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005640
EISBN: 978-1-62708-174-0
... with interrupted current Table 8 Seam welding low-carbon steel with interrupted current Data common to all welding speeds Pressure-tight joint (note 8 ) Roll spot welding Nonpressure-tight joint (note 10 , 11 ) Thickness of each of the two workpieces (note 1 , 3 ) Electrode width and shape...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... zinc attacked the grain boundaries in the stainless steel, causing intergranular cracks. The piping was dimpled and leaked at some of the welds. The locations and depths of the cracks were related to the welding procedure and the amount of welding heat used. Excessive welding heat had caused dimpling...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006449
EISBN: 978-1-62708-190-0
... of unsharpness is that when it is greater than the width of a flaw, the contrast resulting from the flaw is reduced from its theoretical value; the greater the unsharpness, the greater the contrast reduction. For tight cracks, contrast could be reduced to the point where the change in tone is below the threshold...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005614
EISBN: 978-1-62708-174-0
... be as tight as possible and should never exceed 0.13 mm (0.005 in.). In joining thin sections to thick sections by EBW, the joint is usually designed so that the thick member serves as a heat sink for the thin member, and the point of beam impingement is slightly removed from the thin metal. When...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006501
EISBN: 978-1-62708-207-5
... required Joining different materials, including multilayers with large differences in thickness Limited distance of the clinched location from the edges of joined elements (due to C-frame equipment) Maintains good electrical conductivity Limited gas and fluid leak tightness Easily adapted...
Book Chapter

By K. Sampath
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002488
EISBN: 978-1-62708-194-8
... of a normal single-thickness weld made with a tight, surface-focused beam. Thus, the indicated focal-point setting was more virtual than real. Both welds were satisfactory as to soundness and shape. Because of lack of access to the interior of the joint, weld spatter and undercutting were of concern...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003048
EISBN: 978-1-62708-200-6
... in the automotive area as body seam sealants. The plastisols fuse and cure in the paint bake cycles. Weld-through versions are used as adhesive sealants in the bonding of body panels. Solvent-based PVC pipe dopes or cements are used for bonding and sealing plastic plumbing joints. Polypropylenes used as hot...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005626
EISBN: 978-1-62708-174-0
... is shown in Fig. 4 . Annular-projection welding generally provides high-integrity joints and can be used for leak-tight applications. Metallographic inspection is a common method to assess bond line quality. Other metallurgical features (hardness distribution, grain size, etc.) of the weld can also...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001409
EISBN: 978-1-62708-173-3
...</xref>, <xref rid="a0001409-ref33" ref-type="bibr">33</xref>, <xref rid="a0001409-ref34" ref-type="bibr">34)</xref> Hydrogen Embrittlement Preheating Postweld Annealing Corrosion Resistance Example 1. Leaking Welds in a Ferritic Stainless Steel Wastewater Vaporizer Weld Toughness Hot Cracking Welding Processes Selection...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004163
EISBN: 978-1-62708-184-9
... aluminum coating. The aluminum-coated stainless alloys, when used in double-wall muffler construction, have been found to improve leak tightness. The softer free-aluminum exterior coating acts similar to a gasket in crimping operations when compared to the smoother, harder mating surfaces presented when...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006062
EISBN: 978-1-62708-172-6
...., can be pulled off by duct tape pulls) must be removed, but fairly tight rust, old coating, and scale do not need to be removed. Hand tool cleaning or low-pressure hydroblasting is usually adequate. Petrolatum-wax-impregnated tapes are helically wrapped on pipes or shingle wrapped on flat surfaces...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... inspection had included careful scrutiny of all pipe welds by both visual and ultrasonic examination. Following discovery of the two leaks, the entire line of 150 mm (6 in.) pipe, which contained 16 welds, was carefully scanned. Five additional defects were discovered, all circumferential and all in HAZs...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001444
EISBN: 978-1-62708-173-3
... for details. Fig. 23 Photomicrograph of a typical automatic wire-feed electron-beam repair of an air seal. 15× Fig. 18 Plot of penetration versus welding speed as a function of material at a beam power of 9 kW Fig. 19 Catalytic converter assembly consisting of seams joined by EBW...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001403
EISBN: 978-1-62708-173-3
.... Diffusion bonding, ultrasonic welding, and similar techniques can be used to join very thin metals. These processes are particularly appropriate for the precious metals—for example, in making contacts to foils in electronic circuitry. They are economically unsuitable for continuous seams in liquid or gas...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... monitoring of parts in service. These include techniques such as Barkhausen noise detection, acoustic emission, vibration analysis, leak detection, and strain gages. These applications of NDE technology in production and in-service settings also are important to recognize and understand during a failure...