Title

Disk and Strip Forging for the Determination of Friction and Flow Strength Values

Abstract

For forging operations, process parameters, such as workpiece geometry, forging load, and material properties of the deforming body, can all be measured by well-established techniques. Interface friction, however, is a far more elusive quantity, yet its significant role in determining forging forces and mode of material flow is well-recognized. Three new techniques are proposed to enable friction determination during forging. The first of these permits friction measurement over a small but finite increment of deformation; the second, removes the controversy over measuring geometry changes of a barreling surface and, therefore, provides for increase measurement accuracy; the third technique extends measurement to forging under plane strain conditions and introduces a new approach to the problem. The use of forging to measure flow stress and provide stress-strain data for the material being formed is discussed briefly.

Department(s)

Materials Science and Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1978 Taylor & Francis, All rights reserved.

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