Online Leveling Machine

The online leveling machine is manufactured by the French company DMS. Leveling essentially involves a secondary cold rolling deformation with a very small reduction rate (0.5-4%). After annealing and pickling, the stainless steel strip undergoes a small amount of deformation to improve the strip's flatness, enhance its mechanical properties (especially stamping performance), and improve the surface finish of the strip.

Axial flow CO, laser deep welding machine

This equipment is manufactured by Japan's TEMIC TRUMPF company and features fast welding speed, low filler wire consumption, high penetration ratio, concentrated energy density, a very small HAZ (Heat Affected Zone) in the weld seam, good weld fusion performance, and aesthetically pleasing weld surface formation. It is the most critical equipment to ensure the continuous production of the continuous rolling mill.

Five-stand stainless steel cold tandem rolling mill

This continuous rolling mill ensures continuous rolling of stainless steel with high production efficiency. Weld seams are rolled directly, improving yield and resulting in good finished plate shape, which is a major advantage of this continuous rolling mill. Through five stands of continuous rolling, it achieves thinning and finishing of stainless steel strips, compatible with multiple materials, integrated with an intelligent control system, suitable for large-scale production, ensuring product surface quality and performance, meeting high-end application requirements.

Online Edge Trimming Disc Shear

The online slitting disc shear is manufactured by the French company DMS. The spacing of the shear blades is designed to be 800-2000mm, with a waste edge width of 5-50mm. The edges of the sheared steel strip are neat, with precise width and no burrs, allowing direct recoiling at the continuous rolling mill, and then directly feeding into the packaging line, greatly improving production efficiency.

Three 100-ton top and bottom blow converters

Using the top and bottom combined blowing process, it achieves high efficiency in removing C, P, and S, integrates the converter's auxiliary lance, improves endpoint accuracy, increases metal yield and oxygen utilization. Enhanced molten pool stirring improves reaction efficiency and steel composition uniformity. The three-station linkage can increase capacity, adapt to continuous steelmaking needs, and efficiently produce high-quality carbon steel, low alloy steel, etc., meeting the requirements for smelting various steel grades.

Two 100-ton dual-station LF ladle refining furnaces

Using argon stirring technology at the bottom of the molten steel ladle and online wire feeding technology to achieve deep deoxidation and deep desulfurization. The dual-station design allows alternating operation. Through arc heating, argon stirring, and slag formation, the composition and temperature of the molten steel are precisely controlled to remove impurities. Two linked units enhance refining efficiency, adapt to converter capacity, ensure molten steel purity, and meet the requirements for high-quality steelmaking.

A 100-ton double-station RH vacuum refining furnace

This equipment features process characteristics such as deep decarburization and dehydrogenation under vacuum conditions, and high alloy yield. Once completed, it can assist in smelting pipeline steel, weathering steel, and other series of steel types. It deeply removes gases such as H, N, O, and inclusions from molten steel, precisely controls composition and temperature. It is suitable for producing high-quality steel with high efficiency, ensuring steel purity and performance to meet high-end manufacturing demands.

Two large slab continuous casting machines

Under dynamic light pressure, the electromagnetic stirring technology ensures good internal quality of the cast slab. (1) Full-process protection of the pouring system. (2) Metallurgical technology of the tundish, ensuring stable casting and sufficient flotation of inclusions. (3) Automatic detection system for slag removal. (4) Automatic control of the mold liquid level. (5) Continuous bending and continuous straightening. (6) Comprehensive electrical and automation control operation system, quality tracking system, and computer secondary control system.

Heating furnace

Heating capacity of 130t/h, fully utilizing fixed-bed dry desulfurization and low-nitrogen combustion technology to achieve clean production throughout the entire process. The heating furnace adopts a blast furnace gas dual regenerative step-type heating furnace directly connected to the steelmaking continuous casting machine process layout, enabling fast and efficient production and rapid delivery.

High-pressure water scale removal system

The scale removal water system pressure reaches 22.5 MPa, and the scale removal point pressure reaches 21.5 MPa. The scale removal pressure has reached the domestic advanced level, ensuring the surface quality of the steel plate. Special nozzles spray the surface of the steel billet to quickly peel off the high-temperature formed iron oxide scale. It can remove surface impurities from the rolled product, preventing scale from being pressed into the surface during rolling, which causes surface defects, thereby improving the surface quality of the steel. The system responds quickly and operates efficiently, matching the pace of the continuous rolling production line to ensure smooth subsequent rolling processes.

Hot/Cold Rolling Mill

The main drive system of the 3500mm rolling mill and the automation control system of the hot zone are provided by the world-renowned manufacturers Toshiba Sammi Corporation and Germany's SMS group. They feature advanced functional modules such as PSC (Procedure Calculation), PFC (Plate Shape and Flatness Control), ASC (Automatic Plane Shape Control), and MTS (Material Tracking), achieving fully automatic control of the rolling process including batch rolling strategies. The system operates stably and efficiently.

Heat Treatment Equipment

The main equipment of the heat treatment line includes an 83.6-meter oxygen-free radiant tube heat treatment furnace (mainly used for normalizing and quenching), a 20-meter roller quenching machine, and a 78.4-meter roller-bottom low-temperature open flame furnace (mainly used for low-temperature tempering of wear-resistant steel and medium-temperature tempering of high-strength steel). The production line is equipped with a shot blasting machine, accelerated cooling device, powerful straightening machine, cooling bed, fixed-length sampling shear, and other equipment, with a designed annual production capacity of 200,000 tons.