Twist pin contact terminal:The production and manufacturing of Rectangular connector twist pin use gold-plated pin and thread to conduct position setting by automatic winding technology in the form of rotating concentric circles according to the standard angle, and use laser welding to weld the two ends of the twist needle. The fusion welding is smooth and firm, and the shape meets the angle design. Tolerance grade: it12, H12, H12. Heat treatment: hv340-360, the inner and outer circle wires are evenly divided, without loose wires and broken wires, Use the 0.58 + 0.01 Jack to check the separation force of the probe: between 0.25N and 0.8N. Beryllium copper C17200 is used for needle and thread, C2680 brass is used for needle body, electroplating requirements: 80u "for the whole bottom and 50U" for gold plating ". This kind of gold plating surface treatment can improve its plug-in resistance up to 50000-100000 times of high performance requirements. The resistance stability reaches the optimal state of all metal plug connection modes, with small volume, good contact and ultra-high times of plug performance.twist pin contact
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