What are the strict requirements of copper material for pin and socket?

　　The quality requirements for the processing raw material copper are very high. The copper material should not contain any other impurities, and the surface must be clean, flat and smooth. The diameter of the pin socket must be stable, and the tolerance range is very small. The change of the diameter will also change the impedance uniformity and echo performance, so the accuracy is particularly high.

　　The pin socket has two functions, the first is the loop conductor. The second is that it can play a shielding role. The sheath of leakage cable has the function of determining leakage. The outer conductor of coaxial feeder cable and super flexible cable is mainly formed by welding corrugated copper pipe. The jack of these cables is basically completely closed, and no radiation is allowed in the cable.

　　The pin socket is usually formed by longitudinal wrapping of copper strip. On the jack, there are longitudinal or transverse notches or small holes. Grooving of outer conductor is common in corrugated cable. It is made by cutting and slotting the corrugation wave crest with equal distance along the axial direction. The cut part is very small, and the distance between the slots is smaller than the electromagnetic wavelength.

　　Non leaky cables can be made into leaky cables according to the processing method. A group of suitable slot structures can be obtained by cutting the jack wave crest of common corrugated cables among non leakage cables. The requirement of copper material for pin socket is very high, the conductivity is also very high, and there is no impurity. The size should be strictly controlled within the required range.

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