A reinforcing nozzle flange is a type of nozzle flange used in pressure vessels, characterized by its integral forging of the flange and reinforcement tube. It offers advantages such as structural optimization, rational stress distribution, and excellent fatigue resistance.
The reinforcement nozzle is manufactured as a single forged component, integrating the nozzle and a portion of the shell with the reinforcing section, and is subsequently welded to the shell and the nozzle. By concentrating the reinforcing metal in the region of maximum stress around the opening, this design most effectively reduces the stress concentration factor. A butt weld may be employed, with the weld and its heat-affected zone positioned away from the location of maximum stress, resulting in excellent fatigue resistance.
The company is equipped with over 80 sets of forging and processing equipment, including a 4,000‑ton forging hydraulic press, a 4,000‑mm ring‑rolling mill, and heat‑treatment facilities. It also boasts 18 units of inspection and testing equipment, such as full‑quantitative and portable spectrometers, room‑temperature and high‑temperature tensile testers, ultra‑low‑temperature impact testers, and digital ultrasonic flaw detectors. The facility has an annual production capacity of 30,000 tonnes of forgings made from carbon steels, alloy steels, stainless steels, and nickel‑based alloys, with the largest forgings featuring a maximum billet outer diameter of 4,000 mm.
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