China National Heavy Machinery Corporation receives an invention patent grant: “Integrated forging method for a fitting section with asymmetrically unequal-diameter nozzles””
Thread Content
According to data from the Tianyancha app, China National Heavy Machinery Corporation (601106) has newly obtained an invention patent grant. The title of the patent is “Integrated forging method for a joint section with asymmetric nozzles of different diameters”, the patent application number is CN202411802104.4, and the grant date is November 4, 2025. Patent Abstract: The present invention discloses an integrated forging method for a pipe joint section equipped with asymmetric nozzles of unequal diameters. It belongs to the field of forging technology and is aimed at addressing the problems in existing technologies, where the manufacturing of pipe joint sections typically involves semi-integrated welding processes, which result in high risk factors, low first-pass success rates, complicated and time-consuming repair work, as well as significant deformation of the pipe joint sections. In the method of the present invention, the blank is compressed using an upper irregular cover plate and a lower irregular cover plate; the upper surface features alternately arranged upper protrusions and upper grooves, while the lower surface has alternately arranged lower protrusions and lower grooves. The ring band is divided into multiple nozzle protrusions arranged circumferentially along the irregular blank. By compressing the blank with an upper flat cover plate and a lower flat cover plate, a misalignment is created. After machining flanging pre-hole on the nozzle protrusions, flanging and punching are carried out to form an inlet nozzle, an outlet nozzle, and a injection nozzle. The present invention can be used for the integrated forging of joint sections with asymmetric nozzles of unequal diameter.
【HaiChuan Discussion】The client’s demands are getting higher and higher, while the prices kept being pushed lower. Can such work still pass the acceptance test? https://bbs.hcbbs.com/thread-5704576-1-1.html (Source: Haichuan Chemical Industry Forum)
【HaiChuan Discussion】The client’s demands are getting higher and higher, while the prices kept being pushed lower. Can such work still pass the acceptance test? https://bbs.hcbbs.com/thread-5704576-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Rapid Development in Chemical Engineering Equipment】The first commercial ammonia-to-hydrogen production facility in China with a capacity of 1,000 kilograms was officially commissioned in Foshan between 2027 and 2025 – the Fuda Zijin facility. https://bbs.hcbbs.com/thread-5704478-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Rapid Development in Chemical Equipment】The core equipment for China’s first 400,000 tons/year LAO production facility – the high-purity C4 and C6 product towers – was inspected and approved in Dalian. https://bbs.hcbbs.com/thread-5704530-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2800 to 2025: Kunming University of Science and Technology, in collaboration with Guangdong, developed China’s first mobile zero-carbon hydrogen production and power generation unit, which was showcased at the forum. https://bbs.hcbbs.com/thread-5704545-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Rapid Development in Chemical Engineering Equipment】The first 6MPa 3,500-ton gasification furnace developed as part of the Space Long March project was successfully ignited during the pilot operation of the integrated project for clean and efficient utilization of resources in Xinjiang’s Zhongneng Lvyuan area. https://bbs.hcbbs.com/thread-5704592-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Rapid Development in Chemical Equipment】The key technology project for \"converting coal into high-end carbon materials\" carried out by Zhaoqing Shunxin from 2005 to 2025 has passed the evaluation process. https://bbs.hcbbs.com/thread-5704595-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Great Development in Chemical Equipment】From 2806 to 2025: Dalian Institute of Chemical Physics’ new fixed-bed process for producing hydroquinone via phenol and hydrogen peroxide hydroxylation passes the scientific and technological achievement evaluation. https://bbs.hcbbs.com/thread-5704724-1-1.html (Source: Haichuan Chemical Industry Forum)
【Ten Years of Rapid Development in Chemical Engineering Equipment】2791-2025: Fuda Zijin Hydrogen Energy unveils China’s first 1,000-kilogram-class commercial ammonia decomposition hydrogen production and hydrogen refueling station https://bbs.hcbbs.com/thread-5704209-1-1.html (Source: Haichuan Chemical Industry Forum)