Titanium alloy welding device

The utility model discloses a titanium alloy welding device, which comprises a welding gun shell, an electrode holder, an electrode, a gas nozzle, a switching section, a protective nozzle, a support shell and a flow dividing net, wherein the electrode holder is sleeved outside the electrode; a limit part is arranged at the upper ends of the electrode holder and the electrode; the gas nozzle is fixedly arranged outside the electrode holder; the switching section made of a nonmetal material is arranged between the welding gun shell and the protective nozzle; the electrode holder, electrode and gas nozzle combined body is arranged in a cavity between the welding gun shell and the protective nozzle; the electrode extends out of the protective nozzle; and the flow dividing net for welding gas and the support shell for accommodating the flow dividing net are arranged in the protective nozzle; fastening blocks are arranged between the support shell and the protective nozzle; the flow dividing net is a multi-layer me