Abstract
The die-drawing process may be used to achieve orientation of the molecular structure of a polymer and thereby considerably enhance its strength and stiffness. The effect of controlling the strain rate within a die by suitable design of the die profile has been investigated and strain-rate control is seen as a means of reducing product fracture during processing. A method of designing a die profile is given in detail and manufactured dies having profiles where the strain rate either increases, decreases or remains constant throughout the die have been tested experimentally. Conventional taper dies are found to produce product fractures at relatively low billet velocities, but the products have a high draw ratio. The draw ratios achieved in constant-strain-rate dies are lower, with considerably higher billet speeds being achieved, particularly when using dies having a draw ratio of six.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
