Based on the high precision feature of the waveguide tuber for phased array radar

the die-casting and assembly technology were adopted to manufacture the waveguide tube meeting the technological requirement.Through analyzing the process difficulties of the waveguide tube

the gas-controlling method of YL113 aluminum alloy

die-casting technique and assembly technology were analyzed.The results show that by using inert gas refining and vacuum degassing process

the gas content in the liqurd Al is decreased significantly which is better for the internal quality

By optimizing the pouring gate design and processing parameter

the dimensional precision of the loudspeaker-like casting and two stiffened reinforcing rib can be guaranteed with yield strength more than 270 MPa and elongation more than 2%.Meanwhile

using annealing

natural aging treatment and assembly fixture

the dimensional precision of the waveguide tube can be guaranteed and the product qualified rate can be reached up to 91%.