TY  - JOUR
AB  - THERE are three processes by which internal combustion engine valves are made, differing chiefly in the initial stages. These are: (1) hand forging by drawing‐down the stem; (2) electric‐upsetting of the head; (3) the extrusion process. In each of the three processes the final shaping of the valve blank is done by stamping between dies in a suitable press.
VL  - 12
IS  - 6
SN  - 0002-2667
DO  - 10.1108/eb030658
UR  - https://doi.org/10.1108/eb030658
PY  - 1940
Y1  - 1940/01/01
TI  - The Production of Extruded Valves
T2  - Aircraft Engineering and Aerospace Technology
PB  - MCB UP Ltd
SP  - 189
EP  - 190
Y2  - 2024/04/25
ER  -