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Abstract

The research presented in this thesis is concerned with Rotary Forging as a manufacturing process and its application to the forming of metals.

The role of rotary forging as a manufacturing process to date is discussed and correlation between the results of experimental studies and theories are examined.

The work carried out includes theoretical and practical studies designed to meet the following objectives:-

1) To design, manufacture and commission a 1.OMN Rotary Forging machine suitable for use in manufacturing industry.

2) To demonstrate that the process previously demonstrated on a 0.5MN machine can be scaled up.

3) To identify the effects of the Rotary Forging process on solid metals.

4) To present theoretical considerations which may be of benefit in the application of the Rotary Forging process.

5) To gain operating experience of the process in a manufacturing environment.

Where practicable, correlation between the results obtained from theoretical studies and experimental work are attempted.

The author intends the contents of this thesis to add to the existing knowledge of the process and to enable the identification of specific areas of work which should be pursued in further studies.

The thesis details the design , manufacture and commissioning of the 1.OMN machine and the series of experiments relating to the forming of high purity and commercially available materials and also considers the shape and development of the shape of the contact patch between the upper tool and the billet.

The conclusions which can be made are that the condition of a material before forging is critical if extreme deformations are to be carried out. It can also be concluded that the structure of a Rotary Forged product does not necessarily reflect the degree of deformation, but that the limit of deformation before failure is a function of the metallic structure of the material. The machine produced as a result of this thesis meets the design specification and is capable of producing forgings of commercial value when supplied with material in a suitable condition.

Publication Type:	Thesis (Doctoral)
Subjects:	T Technology > TJ Mechanical engineering and machinery
Departments:	School of Science & Technology > Department of Engineering School of Science & Technology > School of Science & Technology Doctoral Theses Doctoral Theses

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