Engine Valves
Manufacture of automotive engine valves can be achieved using both friction welding and electrical upsetting joining techniques.
The joining is usually required to obtain bi-metal engine valves. Both the Friction Welding and the electrical upsetting are ideal processes for the entire range of standard materials used.
FPE have been manufacturing Friction welders and Electrical Upsetters specifically designed and used for engine valve manufacture for the last 40 years.
Our Friction welders cater for both solid valves and hollow valves. We can offer full automation options to suit your needs.
- Applications
- Products
- Processes
Typical Example:
Titanium Engine valves also catered for.
NC4,000 | NC7,000 | NC10,000 | EUM32
FRICTION WELDERS - FOR PIN TO PIN AND/OR HEAD TO PIN JOINING
NC4,000
Welding of up to 10mm diameter steel. Ideal for Engine Valve manufacture Further Information
NC7,000
Welding of up to 16mm diameter steel Further Information
NC10,000
Welding of up to 20mm diameter steel Further Information Further Information
UPSETTING - FOR HEAD FORMING AND SHAPING FROM BAR
EUM32
32 kVA Upsetter for up to 14mm Diameter Steel Further information
VALVE HEAD - UPSETTING
A high current is passed into one portion of the material to be upset. Electrical resistance causes the component to heat up. Once this portion of the material reaches plastic state, cold material is pushed into the hot area via hydraulic force.
During open electrical upsetting, the bar material is positioned between the upsetting cylinder and the anvil plate or die. Two-part clamping jaws close around the bar and electrical current flows between the clamping jaws and anvil plate, heating the exposed portion of the component. The hydraulic cylinder exerts a controlled force on the cold end of the bar producing a shaped head. The material is upset to the required shape via the application of heat, pressure, flow and linear travel. In open upsetting techniques the component is then passed to a form tool (press) in the red hot state to finish. Closed techniques produce a finished component direct from the upsetting machine.
The upsetting axis is usually vertical and the stroke is hydraulically powered. The machines incorporate many features that ensure optimum cycle time, excellent repeatability, quick set-up and reliable operation for all types and sizes of valves.
VALVE HEAD -FRICTION WELDING
