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Details of Grant 

EPSRC Reference: EP/M507684/1
Title: TWISTER: Titanium Wire for Inovative Spring Technologies and Emissions Reduction
Principal Investigator: Jackson, Professor M
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Materials Science and Engineering
Organisation: University of Sheffield
Scheme: Technology Programme
Starts: 01 April 2015 Ends: 31 March 2018 Value (£): 353,775
EPSRC Research Topic Classifications:
Manufacturing Machine & Plant Materials Processing
EPSRC Industrial Sector Classifications:
Manufacturing
Related Grants:
Panel History:  
Summary on Grant Application Form
The contribution from the University of Sheffield to the "Titanium Wire for Inovative Spring Technologies and Emissions

Reduction (TWISTER)" project will be on the development and validation of optimum tooling and process parameters for

the continuous extrusion machine and the designing of optimum wiredrawing and heat treatment schedules for subsequent

wire production that will feed into Performance Springs and the springmaking process routes. The UOS will also support

the developed in the downstream spring design and manufacture through metallography and finite element modelling. This

will be undertaken by Dr Jackson and a Postdoctoral Research Associate. Thus the aim of the project in its broadest sense

is: Development of a novel extrusion and cold drawing process route for the production of titanium wire for subsequent

valve and suspension spring manufacturing for the automotive sector. This will be achieved by the following four work

packages.

Work Package 1: CONTINUOUS ROTARY EXTRUSION (CRE) TOOL LIFE ASSESSMENT (UOS and Meltech): This

includes design of tooling through finite element modelling (and know how) and then in collaboration with Meltech

determining tooling wear rates during continuous extrusion for different titanium particulate morphologies and chemistries

for production rates in the order of 5 metres per minute. From such work, process maps of wire production rates for

different particulate and chemistries; including machined swarf, commercial titanium powder and emergent novel low cost

alloy powder will be created.

Work Package 2: WIRE-DRAWING OPTIMISATION (UOS): This work package will use DEFORM finite element modelling

software to determine of the optimum cold drawing schedule and die design for downstream spring feedstock. It is

envisaged that the continuous extruded material will need minimal cold drawing compared to conventionally produced wire,

but this work package will acceletrate the optimisation of the die design and pass schedule, including any intermediate

annealing stages. Cold drawing schedules will be deisgned for each particulate feedstock.

Work Package 3: SPRING DESIGN & MANUFACTURE (Performance Springs and UOS): This will include the design and

manufacture of valve and suspension springs for Bentley and K-Tech Suspensions respectively. UOS will support

Performance Springs by using DEFORM and outputs from work packages 1 and 2 to model the CNC coiling operation.

UOS will also conduct metallography and testing of spring product supporting Performance Springs primary development.

Work Package 4: MECHANICAL TESTING & VALIDATION (Performance Springs, Bentley, K-Tech and UOS): This work

package will focus on the mechanical testing (both static and dynamic testing) of both wire and spring product generated

throughout the programme. Optimum spring designs will be tested in suspension arrangements and engine tests in

collaboration with the end users Bentley and K-Tech.
Key Findings
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Potential use in non-academic contexts
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Impacts
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Summary
Date Materialised
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Project URL:  
Further Information:  
Organisation Website: http://www.shef.ac.uk