DROP-FORGING PRACTICE

1922 ◽  
Author(s):  
J H Nelson
Keyword(s):  
Drop Forging

The Mechanics of Flash in Drop Forging-Temperature and Speed Effects

1976 ◽  
Vol 190 (1) ◽  
pp. 457-466 ◽  
Author(s):  
T. A. Dean
Keyword(s):  
Metal Flow ◽  
Experimental Results ◽  
Theoretical Treatment ◽  
Axisymmetric Cavity ◽  
Die Filling ◽  
Drop Forging

SYNOPSIS Forging tests have been made using axisymmetric cavity dies with various flash geometries. For a particular flash geometry greater ‘rise’ was obtained with thinner flash. Also greater rise was obtained on a hammer than on a press, the load requirements being greater on the higher speed machine. Modes of metal flow were similar at all preheat temperatures. Theoretical treatment of the later stages of die filling, considering metal flow to be significant only in the region of the flash land, is able to describe the main features of the experimental results.

Drop forging of HSLA steel with application of thermomechanical treatment

2008 ◽  
Vol 8 (4) ◽  
pp. 93-102 ◽  
Author(s):  
P. SKUBISZ ◽  
A. ŁUKASZEK-SOŁEK ◽  
J. SIŃCZAK ◽  
S. BEDNAREK
Keyword(s):  
Thermomechanical Treatment ◽  
Hsla Steel ◽  
Drop Forging

Analysis of the drop forging of a piston using Slip-Line Fields and FEM

1997 ◽  
Vol 39 (2) ◽  
pp. 211-220 ◽  
Author(s):  
W.S. Weroński ◽  
A. Gontarz ◽  
Zb. Pater
Keyword(s):  
Slip Line ◽  
Drop Forging

Drop forging design

1970 ◽  
Vol 49 (9) ◽  
pp. 376
Author(s):  
F.T. Walker
Keyword(s):  
Drop Forging

Manufacturing Processes Drop Forging

1976 ◽  
Vol 26 (2) ◽  
pp. 69-70
Author(s):  
D. J. BARBOUR-BOURNE
Keyword(s):  
Manufacturing Processes ◽  
Drop Forging

Platen Deceleration as a Mechanism of Noise Production in Impact Forming Machines

1976 ◽  
Vol 18 (3) ◽  
pp. 126-130 ◽  
Author(s):  
D. C. Hodgson
Keyword(s):  
Impulsive Noise ◽  
Sound Pulse ◽  
Solid Cylinder ◽  
Wide Range ◽  
Drop Forging ◽  
Explicit Finite Difference ◽  
Rapid Deceleration ◽  
The Impact ◽  
Noise Production ◽  
Explicit Finite Difference Method

The very rapid deceleration on impact of the platen (tup) in a drop forging machine is shown to be an important source of impulsive noise. An ‘explicit’ finite-difference method is used to calculate the sound pulse radiated by a platen in the form of a solid cylinder undergoing a deceleration given by where T is the impact time. The results are presented in dimensionless form, enabling the pulse to be calculated for a wide range of platen sizes and impact times.

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