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projection welding

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Published: 01 November 2011
Fig. 3.8 Development of weld nugget during projection welding of embossed spherical projections. Source: Ref 3.4 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290061
EISBN: 978-1-62708-306-5
..., namely resistance spot welding, resistance seam welding, projection welding, flash welding, and upset welding. flash welding projection welding resistance seam welding resistance spot welding upset welding RESISTANCE WELDING is a group of processes in which the heat for welding...
Image
Published: 01 November 2011
Fig. 3.7 Relation of weld nuggets to embossed regions of metal sheets used in projection welding: (a) electrical circuit loop is completed when current travels through embossed projection contact points; (b) addition of pressure after welding current is turned off causes plastic deformation More
Image
Published: 01 October 2011
Fig. 6.33 Typical example of (a) equipment and (b) schematic for resistance projection welding. Tooling is platen mounted and consists of water-cooled copper blocks, welding die inserts, and locators. Photo courtesy of Taylor Winfield More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... Abstract This chapter describes the processes involved in the fabrication of wrought and cast metal products. It discusses deformation processes including bending and forming, material removal processes such as milling, cutting, and grinding, and joining methods including welding, soldering...
Image
Published: 01 June 1983
Figure 11.23 Fracture toughness of fully austenitic weld metals at 4 K as a function of grain width. ● — Read et al., 1980 ; △ — LCP; ○ — MFTF. LCP and MFTF refer to weld procedure qualification welds prepared for the Large Coil Project, Oak Ridge National Laboratory and the Magnetic Fusion More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000167
EISBN: 978-1-62708-312-6
... undesirable spatter. This problem may be corrected by demagnetizing the workpiece prior to arc welding. The low electrical conductivity of austenitic stainless steels can pose a challenge with resistance (projection) welding ( Ref 21 ). Cleanliness of the weld zone is essential, not only to avoid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700215
EISBN: 978-1-62708-279-2
... behavior of AHSS and could seriously affect the structural performance of AHSS components. The ASP led a project to study the welding performance of AHSS for auto body structural components. Five fusion welding processes (MIG pulse/ac, MIG pulse/dc, MIG/laser-assisted, laser, and laser plasma) were...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700199
EISBN: 978-1-62708-279-2
... improvements in the production, processing, and performance of lightweight materials: aluminum, magnesium, composites, and steel. Projects on advanced processes include press optimization, flexible binder, warm forming, controllable drawbeads, and welding optimization. Auto/Steel Partnership/U.S. Automotive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410001
EISBN: 978-1-62708-280-8
... a definite advantage over aluminum when stiffness is the dominating performance need. Depending on the relative costs of steel and aluminum, automakers have been forced to switch back and forth between steel and aluminum, incurring heavy expenses. Specialized welding needs Aluminum is more...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... of the failed sample clearly indicated that the location of the puncture on the inner surface was almost in the weld region. A portion of the excessive weld that had projected out had been eaten away, forming uneven cavities most likely due to corrosion damage ( Fig. 6.165a ). A low-magnification view...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930197
EISBN: 978-1-62708-359-1
... (see the section “ Cold Cracks in Base Metal ” in the discussion of electroslag welding). Failures in Resistance Welds The general term resistance welding includes resistance spot welding, resistance seam welding, and projection welding, which are all closely related. Flash welding (a resistance...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870101
EISBN: 978-1-62708-314-0
... for their heat-up rates during autoclave processing. The designs, shown in Fig. 4.8 , consisted of a steel faceplate with a welded eggcrate substructure, a numerical controlled (NC) machined aluminum form block tool placed on an aluminum project plate, and an electroformed nickel tool with an open tubular...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2010
DOI: 10.31399/asm.tb.hss.t52790229
EISBN: 978-1-62708-356-0
... 40-year-old fleet of stainless steel railcars. The cars still looked fine. There were no dents, and there was no rusting. The spot welds made by the patented Budd process, identifiable by their smooth brown spots, had never been known to fail by metal fatigue. When washed with soap and water...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200158
EISBN: 978-1-62708-354-6
.... Since the casting costs dropped considerably the project moved ahead by making a simple jig for welding the blades into the shrouds by either submerged arc or CO 2 shielded arc. The cost of the second ring was reduced by approximately 20%. Ring 3, after further study, was made by electroslag...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930057
EISBN: 978-1-62708-359-1
... Resistance welding encompasses spot, seam, and projection welding, each of which involves the joining of metals by passing current from one side of the joint to the other. The types of discontinuities found in resistance welds include porosity, LOF, and cracks. Porosity will generally be found...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2010
DOI: 10.31399/asm.tb.hss.t52790171
EISBN: 978-1-62708-356-0
..., more stainless steel than had ever been used on any project. The first stainless steel to be used on any building was the tower of the Chrysler Building, which was covered with 27 tons of the metal. For some reason, Saarinen added 40 feet to the height, bringing it to 630 feet before construction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090349
EISBN: 978-1-62708-266-2
... ( No. 91 ), 1967 , p 3995 – 4095 15.10 “Toughness of Austenitic Stainless Steel Pipe Welds,” EPRINP-4768 on Project 1238-2, Electric Power Research Institute, Oct 1986 15.11 Sasaki R. et al. , “ Mitigation of Inside Surface Residual Stresses of Type 304 Stainless Steel Pipe Welds...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270059
EISBN: 978-1-62708-301-0
... a reconstruction, producing a major environmental impact. The tank was first built in 1940, dismantled in 1986 leaving the old welds in place, and reconstructed in 1987, radiographed and leak tested. It was a case of brittle fracture in the base metal of the tank, alongside a weld. The investigation revealed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310213
EISBN: 978-1-62708-286-0
... analyses), and these grades have varying strengths, appearance, resistance to corrosion, availability, and costs. The success of a building project involves careful planning for the appropriate use of materials. This chapter deals with the technology of stainless steel as it pertains to its proper use...