1-20 of 323 Search Results for

punching

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 August 2018
Fig. 12.34 (a) In a steel part, punching was used to mark in relief BRASOKT 2006. The marking was completely removed by grinding. In (b) after metallographic preparation and etching with Fry’s etchant, the cold deformation associated with the marking is revealed. Courtesy of A. Martiny More
Image
Published: 01 March 2002
Fig. 6.20 A copper grid made by the punching process, as seen in the scanning electron microscope. (a) Secondary electron image (760×) and (b) backscattered electron image More
Image
Published: 01 August 2012
Fig. 2.27 Schematic of punch force/punch displacement curve during V-die bending More
Image
Published: 01 August 2012
Fig. 2.29 Schematic of punch force/punch displacement curve during U-die bending More
Image
Published: 01 August 2012
Fig. 8.18 Bulge formation in sheet hydroforming with punch. (a) Bulge at punch/blank holder interface and at inclined/tapered punch locations. (b) Due to uneven contact between sheet and tool, skid marks can occur because of sheet rubbing at sharp punch corners. Source: Ref 8.20 More
Image
Published: 01 August 2012
Fig. 8.25 Warm sheet hydroforming. (a) With punch using cylindrical punch. Source: Ref 8.25 . (b) With die. Source: Ref 8.26 More
Image
Published: 01 August 2012
Fig. 8.9 Punch force/punch stroke diagram: ironing process combined with forming. Source: Ref 8.3 More
Image
Published: 01 August 2012
Fig. 8.18 Punch force/punch stroke curves obtained from finite element model (FEM) simulations and experiment (Exp) with lubricant (Lub A). COF, coefficient of friction. Source: Ref 8.15 More
Image
Published: 01 August 2012
Fig. 8.19 Punch force/punch stroke curves for different K -values More
Image
Published: 01 August 2012
Fig. 8.20 Punch force/punch stroke curves for different n -values More
Image
Published: 01 August 2012
Fig. 8.21 Punch force/punch stroke curves for different blank thickness values obtained in experiment (Exp) and finite element model (FEM) simulations More
Image
Published: 01 August 2012
Fig. 8.22 Punch force/punch stroke curves for different blank diameters in experiment (Exp) and finite element model (FEM) simulations More
Image
Published: 01 August 2012
Fig. 8.23 Punch force/punch stroke curves for different coefficients of friction, μ, obtained in experiment (Exp) and finite element model (FEM) simulations More
Image
Published: 01 August 2012
Fig. 11.11 Example punch motions of constant and variable punch speeds. Source: Ref 11.13 More
Image
Published: 01 January 1998
Fig. 2-3 Suggested hardness for tool steel perforator punches. Punches should be tempered to 56 to 60 HRC when subjected to heavy shock or used to pierce thick material. More
Image
Published: 01 February 2005
Fig. 17.11 Schematic illustration of punch load versus punch displacement curves in forward rod and backward cup extrusion processes More
Book Chapter

By Soumya Subramonian
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500001
EISBN: 978-1-62708-317-1
... Abstract This chapter provides an overview of the blanking process and the forces and stresses involved. It discusses the factors that affect part quality and tool life, including punch and die geometry, stagger, clearance, and wear as well as punch velocities, misalignment, and snap-thru...
Image
Published: 30 April 2020
Fig. 6.6 Automated compaction involves a cycle where the powder-binder agglomerates are first placed in the die cavity, with the lower punch determining the initial charge deposited by the feed shoe. Next, the lower punch moves down, and the upper punch enters the die. Pressure is applied More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500073
EISBN: 978-1-62708-317-1
... of forming stations, tool geometry for each station (punch and die diameter, punch corner, and die corner radii), draw depth for each forming station, and blank holder force (if needed) at each station. The challenging tasks in designing a process sequence are how to determine the minimum number of required...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400105
EISBN: 978-1-62708-316-4
... of key process parameters including the draw ratio, material properties, geometry, interface conditions, equipment operating speed, and tooling. It then walks through the steps involved in predicting stress, strain, and punch force using the slab method and finite element analysis and presents...