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seam formation

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Published: 01 January 1989
Fig. 20 Effect of three different thread forms on seam formation at thread crest, and the rolled shape of the workpiece at three levels of die penetration (30, 60, and 90%) More
Image
Published: 01 January 2005
Fig. 20 Effect of three different thread forms on seam formation at thread crest, and the rolled shape of the workpiece at three levels of die penetration (30, 60, and 90%) More
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002142
EISBN: 978-1-62708-188-7
..., through-feed rolling, planetary thread rolling, continuous rolling, and internal thread rolling, as well as the rolling machines and dies used. The article describes the factors affecting die life and provides information on radial die load, seam formation, surface finish, and thread dimensions...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... thermal gradients and favor crack formation. Imperfections Created during Forging Many forging defects can be created during the forming process. The defects are almost always caused by improper flow during the forging process. Seams and laps are surface discontinuities that are caused by folding...
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
... associated with seam welding. It concludes with a discussion on the welding equipment and other factors associated with resistance spot and seam welding. aluminum alloys copper alloys electrode force low-carbon steel resistance spot welding seam welding stainless steel surface preparation weld...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003207
EISBN: 978-1-62708-199-3
...Abstract Abstract This article presents a detailed account of the welding parameters, equipment needed, applications, advantages, limitations, and the process variables affecting various types of resistance welding operations, namely, resistance spot welding, resistance seam welding, resistance...
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
... on Weld Formation Phenomena of High Speed Lap Seam Welding, 3rd Report: Voltage Across Electrodes and Current Flow Area of Plate Surface , Yosetsu Gakkaishi , Vol 46 ( No. 10 ), 1977 , p 748 – 753 (in Japanese) Selected References Selected References • Adonyi Y. , Resistance Seam...
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
.... Okuda T. , Spot Welding of Thick Plates, Part I: The Law of Thermal Similarity , Yosetsu Gijutsi , Vol 21 ( No. 9 ), 1973 , p 85 – 88 (in Japanese) 7. Yamamoto T. and Okuda T. , Fundamental Study on Weld Formation Phenomena of High Speed Lap Seam Welding, 3rd Report: Voltage...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... class. Seaming If, during rolling, the work metal flows up the flanks of the die threads faster than it does at the center of the thread form, the displaced metal may fold together to form a seam as the metal fills the full crest of the thread form, as shown in Fig. 4 . The formation of seams...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006514
EISBN: 978-1-62708-207-5
...Abstract Abstract The resistance welding processes commonly employed for joining aluminum are resistance spot welding, resistance seam welding, resistance roll welding, upset and flash welding for butt joining welding, and high-frequency resistance welding. This article discusses the general...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001443
EISBN: 978-1-62708-173-3
... seam welding (RSEW), and projection welding (PW). This article addresses the considerations for using these processes to join specific types of materials. It discusses the process variations, applicability, advantages, and limitations of these resistance welding processes. The article provides...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
... on the electrode, as well as contamination in the joint area, could lead to the formation of porosity in the final weld. Figure 16 shows the porosity and incomplete fusion/penetration-type flaws associated with A.O. Smith SMAW seam welds. Fig. 16 Cross sections of A.O. Smith submerged metal arc seam welds...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
.... The article discusses the types of imperfections that can be traced to the original ingot product. These include chemical segregation; ingot pipe, porosity, and centerline shrinkage; high hydrogen content; nonmetallic inclusions; unmelted electrodes and shelf; and cracks, laminations, seams, pits, blisters...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005583
EISBN: 978-1-62708-174-0
..., and an upsetting force usually is applied to produce a forged weld. High-frequency resistance welding is an automated process and is not adaptable to manual welding. High-frequency resistance welding was developed during the late 1940s and early 1950s to fill the need for high-integrity butt joints and seam...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005791
EISBN: 978-1-62708-165-8
... parameters: atmosphere, pressure, and part temperature. The article includes a discussion on the influence of nitrogen concentration on case structure formation on nitrided steel, and explains the significance of microstructure, hardness, and fatigue strength on nitrided case. It also discusses processing...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
... to have contributed to the formation of the fatigue crack. See also Fig. 248 . TEM p-c replica, 1100× Fig. 248 Portion of the area in Fig. 247 , but at higher magnification, showing the inclusions more clearly. Similar inclusions were found near the crack origin in the fracture surface...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006467
EISBN: 978-1-62708-190-0
... various types of flaws encountered in the inspection of steel bars, including porosity, inclusions, scabs, cracks, seams, and laps. Inspection methods, such as magnetic-particle inspection. liquid penetrant inspection, ultrasonic inspection, and electromagnetic inspection, of steel bars are also described...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... to a reduction in fatigue life. Fig. 1 Fractograph of the surface of a fracture that occurred one turn from the end of a titanium alloy spring. The arrow indicates the point of contact with the end of the next coil. 10× Failures Caused by Material Defects Seams frequently contribute to failures...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001472
EISBN: 978-1-62708-173-3
... in or near the HAZ. They are the result of the high residual stresses induced by thermal cycling during welding. High hardness, excessive restraint, and the presence of hydrogen promote their formation. Such cracks propagate into the weld or beyond the HAZ into the base metal as far as is needed to relieve...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003209
EISBN: 978-1-62708-199-3
... dissolve minor amounts of adsorbed gases and thin surface oxide films and diffuse them away from the bonding surfaces, so that they will not impede the formation of the required metallic bonds across the bond interface. Similarly, the joining of silver at 200 °C (390 °F) requires no deformation...