1. technical advantages
Liaoning Yilian Sheng New Material Co., Ltd. is a professional manufacturer of R & D and production of high-speed steel rolls in China. Its predecessor was Tangshan Yilian Sheng Roll Co., Ltd., which was awarded the "Casting High-speed Steel Roll Production Base" by China Foundry Association and the "Special, Special and New" Advantage Enterprise, is a high-tech enterprise with a municipal high-speed steel roll engineering technology research center, its technical force has the long-term and comprehensive technical support of the high-speed steel roll research and development expert group of China Steel Research Technology Group Co., Ltd.
The high-speed steel roll research and development team headed by senior engineer Miyagi is the first high-speed steel roll developer and producer in my country, and also the inventor of the first high-speed steel roll patent in my country. Over the years, he has accumulated rich experience, especially in the development, manufacturing and use of high-speed steel rolls, and has obtained 9 national invention patents, of which 7 belong to high-speed steel roll manufacturing technology. In 2018, he was responsible for drafting and formulating my country's first "Casting High-speed Steel Rolls" (T/CFA 02010116.1-2019) group standard, and successively organized and presided over the first and 2. three national high-speed steel rolls for rod and wire rolling mills. Technical seminars. It is also one of the main drafters of China's current national roll standards GB/T1504-2008 Cast Iron Roll and GB/T25825-2010 Hot Rolled Steel Strip Roll. It has published more than 40 articles and won more than 8 provincial and ministerial level scientific and technological progress awards.
　2. the development and production of high-speed steel rolls in series.
The high-speed steel rolls produced by Yilian Sheng Company are first manufactured in series according to the characteristics of the rolled material and the number of passes and rolling characteristics of the rolling mill. For example, the high-speed steel rolls used in the production of the finished frame of the bar mill, the high-toughness high-speed steel rolls used in the cutting frame, the high-speed steel rolls used in the middle rolling stand, the heat-resistant cracking high-speed steel rolls used in the roughing mill, and the high-controlled cold control rolling production line, recently, Yilian Sheng Company is developing a new generation of high-strength, heat-resistant and high-wear-resistant high-speed steel rolls used in the endless rolling production line of bar continuous rolling mills. The second is to optimize the composition of high-speed steel rolls and avoid the problem of segregation in centrifugal production. At the same time, the heat treatment process of high-speed steel rolls is improved to enhance the uniformity of roll hardness. The high-speed steel roll produced by the company, through the optimization of composition and the improvement of heat treatment process, the surface hardness uniformity of the roll body is not more than 2HSD, and the cutting performance of the roll is significantly improved. The hardness drop of the working layer is not more than 1HSD, the stability of the roll is greatly increased, and the comprehensive service life of the roll can be increased by about 20% compared with similar products in the past, but the sales price of the roll is not increased.
　3. product classification

High-speed steel rolls on the finished frame for rolling threaded steel
The high-speed steel roll used for rolling thread steel K2 and K5 on the frame has always been based on the wear resistance of the roll as the main performance index, and there is no problem of cross rib milling. The carbides in the high-speed steel roll structure are mainly MC type, M7C3 type and M6C type, and the microhardness of MC type carbide can reach about 3000HV. The microhardness of M7C3 carbide can reach about 2500HV. The microhardness of M6C carbide can reach about 2000HV, with high carbide hardness and good wear resistance, fine carbide particles, good morphology and uniform distribution. Moreover, with the continuous increase of vanadium content in the roll, in the microstructure, the skeletal type M6C carbide is transformed into granular type VC carbide, and the wear resistance of the roll is higher.
The hardness of the working layer of the roll can be controlled at 85-90HSD. Similarly, the hardness uniformity of the roll surface is not more than 2 HSD, and the hardness drop of the working layer is less than 1HSD, thus ensuring the wear resistance stability of the high-speed steel roll. Due to the small amount of pass wear, the amount of each grinding is only 2-3mm, which not only improves the output and dimensional accuracy of the roll, but also greatly increases the roll.

4. science and technology innovation

5. product specifications