1-20 of 255 Search Results for

Forging defects

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
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610585
EISBN: 978-1-62708-303-4
... up highly stressed areas. (h) Seams that develop from elongated trapped-gas pockets or from cracks during working. (i) Laps when excessive material is squeezed out and turned back into the material. (j) Chevron or internal bursts. Source: Ref 2 Fig. 8 Typical forging defects. Seam...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220353
EISBN: 978-1-62708-259-4
... also presents several examples of hot working defects, including forging laps, cracks, and overheated or burned steel. References References 1. Tomiz A. and Kaspar R. , Deep-Drawable Thin-Gauge Hot Strip of Steel as a Substitution for Cold Strip , ISIJ Int. , Vol 40 ( No. 9...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130133
EISBN: 978-1-62708-284-6
... forgings and components Table 1 Failure analysis of steel forgings and components Case study Defect Solution Crankshaft underfill Unable to fill crankshaft flanges with existing press capacity Introduce creep stages for last increment of displacements Tube bending Unable to control...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
... that occur during forging are defects that originated during the initial hot working of ingots or billets. Figure 8 shows a secondary pipe that originated during ingot casting that was not closed during the forging process. A number of imperfections as a result of the forging process are shown in Fig. 9...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
... required to fill the impression and the formation of forge defects (laps) by allocating the material over the impression according to the volume requirements of the impression. Other factors to consider in designing forge operations are billet material flow stress and its variation with temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720365
EISBN: 978-1-62708-305-8
... over into the bar or billet. Typical discontinuities in titanium alloy forgings are α-stabilized voids, macrostructural defects, unsealed center conditions, clean voids, and forging imperfections. The internal discontinuities that occur in aluminum alloy forgings are ruptures, cracks, inclusions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
...] Howson T.E. , and Delgado H.E. , “ Computer Modeling Metal Flow in Forging, ” JOM , Feb . 1989 , p 32 – 34 . 10.1007/BF03220823 [Jenkins et al., 1989] Jenkins B.L. , Oh S.I. , Altan T. , “ Investigation of Defect Formation in a 3-Station Closed Die Forging Operation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050175
EISBN: 978-1-62708-311-9
... 5. Blackwood R.R. and Jarvis Larry M. , Ind. Heat , reprint, Tenaxol Corp . Decarburization Defects and Flaws Stress and Quench Cracks Depth of Decarburization Produced by Induction Castings Forgings Stock Removal for Cold-Finished Steel Stock Removal for Hot...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
... and Elimination of Defects in Cold Forging Using Process Simulation, ” Tenth International Cold Forging Congress, International Cold Forging Group , Sept 13– 15, 2000 ( Stuttgart ). [Kim et al., 1996] Kim H. , and Altan T. , “ Cold Forging of Steel—Practical Examples of Computerized Part...
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
..., such as blade forging, is usually centerless-ground, although it can also be machined in bar-turning equipment. Final inspection consists of ultrasonic examination for internal defects. This is followed by tensile testing in the annealed or heat treated condition. Additional tests include structural examination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120025
EISBN: 978-1-62708-269-3
...-4V-ELI 0.13 0.25 900 130 830 120 Ti-5Al-2.5 Sn 0.20 0.50 830 120 780 113 Ti-5Al-2.5 Sn-ELI 0.12 0.25 690 100 655 95 (a) At 0.2% offset Standard forging temperatures for some titanium grades and alloys Table 4.2 Standard forging temperatures for some titanium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
...) as affected by reduction in maximum powder defect size Fig. 7.7 As-HIP Rene 95 turbine disks. As-HIP shape (upper left), sonic shape (upper right), finished machined disks (bottom) For extrusion of preconsolidated billet, the powder may be preconsolidated by HIP, a separate forging press...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040159
EISBN: 978-1-62708-300-3
... part depends greatly on the design of the previous stages. If the material has been improperly distributed during the blocking stage, defects may appear in the finishing stage. In a good-quality forging, all sections of the die cavity must be filled, and the part must not contain flow defects...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140071
EISBN: 978-1-62708-264-8
... the deformation is being applied rapidly in the forging operation, defects can accumulate in the deformed austenite grains and cause recrystallization to occur during the reduction that occurs on forging. The same is true of hot rolling. This type of recrystallization is often called dynamic recrystallization...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550223
EISBN: 978-1-62708-307-2
... defects. The first step in deforming as-cast ingots is a series of slow-speed steps including upset forging, side pressing, and press cogging to help homogenize the structure and break up the transformed beta structure. Cogging is a simple open-die forging process between flat dies conducted in slow-speed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
...Abstract Abstract The vast majority of beryllium products are manufactured from blocks, forms, or billets of compacted powder that are machined or worked into shape. This chapter describes the metalworking processes used, including rolling, forming, forging, extrusion, drawing, and spinning...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280041
EISBN: 978-1-62708-267-9
...Abstract Abstract This chapter discusses the melting and conversion of superalloys and the solidification challenges they present. Superalloys have high solute content which can lead to untreatable defects if they solidify too slowly. These defects, called freckles, are highly detrimental...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... reductions during the rolling process. The most common defect is edge cracking , or transverse cracks at the edge of rolled strip. Preventive measures include sufficient annealing between rolling operations and the preparation of clean ingot surfaces. Contour Roll Forming Drop forging and press...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440275
EISBN: 978-1-62708-262-4
... Forgings Furnace Treatments Induction Hardening Fluidized Bed Processing Sources of Decarburization Effect of Heat Treatment Figure 2(b) shows surface decarburization and the decrease in surface hardness nearer to the surface for a 1.3% C hypereutectoid steel in the quench...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9
... product shapes. After initial hot rolling operations, semifinished products are worked by hot rolling, cold rolling, forging, extruding, or drawing. Some steels are used in the hot rolled condition, while others are heat treated to obtain specific properties. However, the great majority of plain carbon...