Primet (Tangshan) Metallurgical Technology Service Co., Ltd

Primet (Tangshan) Metallurgical Technology Service Co., Ltd. was registered and established on August 15, 2017, and both shareholders of Hegang and Tangshan Steel completed a capital injection of 80 million yuan on time. Responsible for the maintenance of crystallizers and sector section equipment in the continuous casting process of Hegang Tang Steel, Chenggang and other subsidiaries. Additionally, supporting the continuous casting sector section roller surfacing workshop, roller processing and assembly workshop, utilizing Prius proprietary technology equipment, materials, and software and hardware, including laser alignment instruments, crystallizer detectors, proprietary welding materials, and advanced software management systems. This ensures the online service life of continuous casting equipment and reduces the occurrence of various equipment and production accidents. At present, the company has a total asset of 250 million yuan and is gradually expanding its service scope from the Tangshan region to the same industry in Hebei Province and the whole country. Expert 1 Florian Hollensteiner, an Austrian national, has been serving as the Operations Director in Tang for a long time since 2018, responsible for the overall production and operation of the company. Expert 2 EnricoMayer is Austrian and has been working as a process manager in Tang for a long time since 2018, responsible for the overall production process of the company. Technical Project 1: Research on Anti Crack Spraying Technology for Narrow Edge Mold Copper Plate of Continuous Casting Machine. This project mainly focuses on the anti crack spraying technology for narrow edge mold copper plate of continuous casting machine, including HVAF spraying system and six axis spraying robot. Copper plates can increase the online life of narrow copper plates, thereby increasing the service life of the crystallizer and reducing downtime. This is beneficial for improving the drawing speed of steel sensitive to cracks, reducing corner cracks in the slab, and improving the quality of the casting billet. The research on the anti running cone technology of the crystallizer in the hot rolling continuous casting machine is included in this project. The back plate is located on the fixed side of the bottom back of the crystallizer, and the support plate is located at the top of the fixed side of the crystallizer, which is attached to the back plate. By using a hydraulic width adjustment mechanism, the gap between the back plate and the support plate is eliminated, reducing the taper of the crystallizer. The fastening plate is located at the front end of the support plate, and there are two pairs of symmetrical threaded holes on the plate. The fastening bolts are used to tighten the joint between the fastening plate and the support plate, eliminating the gap between the fastening plate and the support plate, thereby solving the problem of mold cone running. A study on the process of repairing the nozzle blockage in the bending section of the 3 billets and the roller gap in the fan-shaped section of the continuous casting machine. A compressed air pipeline is installed at the connection between the mold, oscillator, and bending machine in the bending section of the continuous casting machine. Before the assembly of the bending section, a compressed air machine is used to clean the water connection plate. The internal and edge water pipes of the bending water connection plate are equipped with filter screens to prevent foreign objects from entering the bending section system and causing nozzle blockage after rust and slag fall off. The head of the fan-shaped section roller shaft is equipped with a sealing end cover and a rotation detector. By adding measurement points for arc alignment and adjusting the roller gap, the rotation of the roller shaft is monitored and adjusted using a rotation detector to ensure the accuracy of the arc alignment function after the roller rotates. The research on anti lock technology for rollers in the bending section of the 4th slab continuous casting machine has adopted small diameter densely arranged segmented rollers in the design of the roller system. The roller diameter is made smaller, which not only ensures the rigidity and strength of the rollers, but also improves and ensures the quality of the slab. However, due to the bearing in the middle position of the segmented roller being exposed to high temperatures for a long time, the mechanical bearing is prone to high temperature expansion and locking. Therefore, our company has decided to study the anti lock technology of the bending section rollers in the slab continuous casting machine to solve the problem of roller lock caused by the thermal expansion of the rollers in the arc section under high temperature conditions. The bearing seat is arranged on both sides of the core shaft, and there is an axial positioning sleeve inside the bearing, which is connected to the core shaft through contact with the axial positioning sleeve and connecting plate. By sensing the temperature changes of the rollers during operation, the drive motor set in the spring mechanism is used to achieve free expansion and contraction of the inner and outer diameters of the bearings.