HIGH PERFORMANCE TITANIUM CONNECTING SEALING RING FOR DEEP-SEA OIL DRILLING AND PRODUCTION DEVICE AND PROCESSING METHOD

The provided are a high performance titanium connecting sealing ring for deep-sea oil drilling and production device and a processing method. The sealing ring comprises a ring-shaped ring body (1), wherein the center hole of the ring body (1) is an inner circumferential surface (5); a ring-shaped convex plate (2), a platform (3), an inclined end surface (4) and a flat end surface (6) are arranged in sequence in the circumferential direction of the outer circumferential surface of the ring body (1); and threads (7) are processed in the inner circumferential surface (5). The processing method for the titanium connecting sealing ring mainly comprises the steps of preparation of titanium sponge, vacuum melting of a titanium ingot, forging prescribing, heating forging, heat treatment and machining. The measured tensile strength of the titanium connecting sealing ring is 565 MPa, the yield strength is 460 MPa, the elongation is 25.2%, and the reduction of area is 44%; and the technical performance is obviously enhanced, reliable use in deep sea at a depth of 1000-3000 m or more can be realized, requirement for huge deep-sea pressure and oil and gas transmission pressure can be met, the service life of the drilling and production device can be prolonged, the extraction efficiency is improved, and the pollution to the marine environment due to oil leakage caused by corrosion or damage can be prevented.