Xingtai Delong Machinery Roller Co., Ltd. was established in June 2007 with a registered capital of US$33 million and a total investment of US$49.75 million. The company is located in Xingtai City, Hebei Province. The factory covers an area of ​​more than 50,000 square meters. The total assets of the enterprise are 800 million yuan, and the production capacity is 40,000 tons. It currently has more than 600 employees, including more than 70 scientific and technological personnel. The company is a wide strip steel hot and hot plate strip rolling mill Roll manufacturing enterprises that use rollers, rollers for large steel rolling mills and large castings as the main products are now high-tech enterprises, provincial technology innovation centers, and provincial industrial technology research institutes.

Main process equipment

The company's overall equipment strength ranks at the international advanced level, and its core equipment has been introduced from world-class enterprises. There are 3 sets of medium-frequency induction melting furnaces; 1 30-ton electric arc furnace and 1 45/70-ton LF/VD furnace; 1 10-ton and 15-ton electric slag furnace; 2 medium-sized horizontal centrifuges, small horizontal centrifuges 1 unit; 1 45MN forging hydraulic press; 1 dual-frequency quenching machine tool; 2 differential temperature heat treatment furnaces; 16 heat treatment furnaces in total; 44 machining equipment, including 3 CNC lathes, 4 CNC grinders, and CNC dual 2 face milling machines. Among them, the medium-sized horizontal centrifuge was introduced from the CMCC in the United States, with a hydraulic motor transmission mechanism; the dual-frequency quenching machine tool control system was introduced from Belgium; the core components of the 45MN hydraulic press were made in Germany.

Quality inspection equipment

The company strictly controls product quality and has complete inspection procedures and control methods from the entry of raw and auxiliary materials into the factory to the exit of finished products. Equipped with X-ray fluorescence analyzer, plasma emission spectrometer, photoelectric direct reading spectrometer, hydroxide and nitrogen combined measurer, carbon sulfur analyzer, metallographic microscope, image analyzer, microhardness meter, Luo style hardness meter, universal material test Advanced detection equipment such as machine, impact testing machine, analog and digital ultrasonic flaw detector, magnetic powder flaw detector, stress meter and on-site hardness meter.

Company-led products

The company has two complete production lines: cast roll and forged steel roll.

The casting roll production line can produce centrifugal rolls, large roll rings, ductile iron rolls, large cast steel rolls, etc. of various specifications of Φ400mm-Φ1600mm. Covering high nickel chromium, high chromium, high chromium steel, high speed steel, semi-high speed steel, large ductile iron rolling rolls, composite cast steel support rolls and various semi-steel and alloy cast steel series roll products, with a cast roll production capacity of 35,000 tons /year, it can meet the working rollers for tropical continuous rolling mills, rough rolls, support rolls and large steel rolling mills.

The forged steel rolling roll production line can produce cold rolls, intermediate rolls, support rolls, etc. of Φ280㎜-Φ800㎜, Cr2-Cr8, semi-high-speed steel and other materials. The forging roll production capacity is 5,000 tons/year, and it provides high-quality forging steel ingots, forging billets and castings to customers at home and abroad. Rolling performance ranks among the top in similar products at home and abroad. The company's products have entered well-known domestic steel enterprises and more than 40 large enterprises, and have established cooperative relationships with many steel enterprises and agents around the world.

In addition, the company can also produce composite cast steel rolls with a single weight of less than 35 tons for cold and hot rolling mills and various kinds of semi-steel, alloy cast steel and other series of cast steel rolls; large-scale steel and bar rolling mill hole-type rolls and rollers Collapsing rollers, large castings and forgings, and other products; carrying out roll repair and remanufacturing and other businesses, dedicated to providing full-service to steel enterprises.