en.Wedoany.com Reported - The strip finishing and processing research institute of China National Heavy Machinery Research Institute Co., Ltd. (hereinafter referred to as "China Heavy Machinery Research Institute") recently completed the one-time hot test and smooth commissioning of the No.4 galvanizing exit flying shear revamp project undertaken for Shougang Jingtang United Iron & Steel Co., Ltd. The equipment operates stably, with all technical indicators meeting requirements. This project is the first EPC turnkey project for the drum flying shear business of China Heavy Machinery Research Institute. The project team completed all work including dismantling, installation, cold test, hot test, and commissioning in just one week.
Located in the Caofeidian Industrial Park, Tangshan City, Hebei Province, Shougang Jingtang United Iron & Steel Co., Ltd. is an important steel production base under Shougang Group, with products covering high-end sheets such as automotive sheets and home appliance sheets. In recent years, Shougang Jingtang has continuously enhanced its production capacity for high-end automotive sheets. In 2025, it signed a contract with SMS group to build a new continuous galvanizing line with an annual output of 450,000 tons of high-end galvanized automotive sheets, further consolidating its market share in the automotive sheet sector.
This revamp applied the spiral blade drum-type flying shear independently developed by China Heavy Machinery Research Institute. This technology uses a quintic polynomial to fit the cam curve, combined with reasonably defined boundary conditions, achieving a smooth transition of the cam curve with a shearing accuracy of ±3 mm. Additionally, the equipment features advanced functions such as dual-channel speed switching, blade position self-repair, and variable-speed variable-length shearing, along with advantages including low shearing force, stable operation, easy maintenance, and a small footprint. After commissioning, the project will effectively enhance the production assurance capability and efficiency of high-end automotive sheets at Shougang Jingtang.
China National Heavy Machinery Research Institute Co., Ltd. is a national-level mechanical equipment R&D and engineering service institution. Its strip finishing and processing research institute has long been deeply engaged in technological R&D and engineering applications in the strip finishing field, possessing the capability to provide complete sets of designs for production lines such as recoiling, packaging, galvanizing, and color coating, as well as specialized equipment including flying shears, disc shears, tension levelers, and spent fuel reprocessing lifting and turnover machines. China Heavy Machinery Research Institute stated that it will continue to focus on the iterative upgrade of high-precision, intelligent shearing equipment and deepen the application of core technologies such as drum flying shears in high-end sheet production lines.
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