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Driven by innovation, climbing against the trend to add vitality——General Manager Sun Jianxun talks about the secrets of Chaoyang Lianqiang's development

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Driven by innovation, climbing against the trend to add vitality——General Manager Sun Jianxun talks about the secrets of Chaoyang Lianqiang's development

  • Time of issue:2022-11-16 16:52

Driven by innovation, climbing against the trend to add vitality——General Manager Sun Jianxun talks about the secrets of Chaoyang Lianqiang's development

  • Time of issue:2022-11-16 16:52
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In recent years, affected by the new crown pneumonia epidemic and other major environments, the domestic steel industry has tightened, most steel companies have limited production, and the living space of the roll market has been severely compressed. However, from Janu ary to September this year, with the substantial increase in the production and operation scale of Chaoyang Lianqiang Roll Co., Ltd. (hereinafter referred to as Chaoyang Lianqiang), the brand influence is also gradually recovering, and the customer market continues to expand. The four sales indicators of volume and sales have increased by more than 200% compared with the same period, and the storage volume and rough volume have basically doubled.The company has successfully won the honors of "Excellent Brand of Technical Service in China's Iron and Steel Industry" and "Green Benchmarking Enterprise in the Iron and Steel Industry Chain" by "China Metallurgical News". Its high-speed steel roll manufacturing technology won the honor of "Good Green Technology in the Iron and Steel Industry". These achievements and honors have laid a solid foundation for Chaoyang Lianqiang's subsequent development.

Why can Chaoyang Lianqiang advance steadily in such adversity, and what is the secret? Sun Jianxun, the general manager of the company, thinks: First of all, it relies on quality to win and the company to thrive with sincerity. Chaoyang Lianqiang is committed to taking customer satisfaction as the eternal pursuit of the enterprise; secondly, relying on the advanced service platform and complete customer service system, it responds quickly to customer needs at all times to ensure that it provides users with the best solutions and a complete te process. Worry-free service; Third, Chaoyang Lianqiang enjoys a high reputation among the industry audience for its advanced product manufacturing level and perfect sales service.In the first 10 months of this year, the company added a total of 13 new customers, including 3 foreign customers and 10 domestic customers.


Improve the level of equipment technology by leading the advanced strategy

The predecessor of Chaoyang Lianqiang was Tangshan Lianqiang, which was formerly the Fengnan County Roll Factory of the Iron and Steel Research Institute of the Ministry of Metallurgy. It is also a small and medium-sized centrifugal roll professional manufacturing enterprise with a glorious history of more than 40 years. With the relevant urban planning requirements of Hebei Province and Beijing and other factors, in order to ensure the continuation of the Synnex brand, Zhang Zheng, chairman of the company, invested and built a factory in Chaoyang City, Liaoning Province in June 2019, aiming to improve the quality through relocation and construction. Equipment level, to achieve sustainable development of enterprises.

New changes also mean new developments, new opportunities and new challenges. Under the leadership of the company's general manager Sun Jianxun's advanced strategy, the brand-new Chaoyang Lianqiang is using continuous innovation in business development concepts and innovative technologies and equipment to create a high- end green digital new manufacturing benchmark enterprise that faces customers, faces the future, and faces the world. Work hard for your goals.

Since Chaoyang Lianqiang started full-process production in November 2021, casting output and processing output have been temporarily difficult due to factors such as strategic relocation and human resource conditions. However, through Sun Jianxun's series of production pro cess management, performance assessment, cost assessment, The use of mechanisms and measures such as post competition has enabled operation management to quickly enter the established track. At the same time, Sun Jianxun pioneered a new production mode of increasing production and increasing efficiency and resumed normal operation, so that the company's production and Operating performance has been steadily improved month by month, and sales revenue has increased by 203% year-on-year.Its various production and operation indicators far exceeded the level of the same period last year.

If a worker wants to do a good job, he must first sharpen his tools. In terms of equipment upgrading and transformation, Sun Jianxun proposed a four-step upgrading policy, namely, equipment mechanization, equipment automation, manufacturing informationization, and operation digitalization. To this end, the company actively introduces various advanced production equipment.At present, the company has 10 sets of medium frequency induction furnace systems, 11 horizontal centrifuges, 25 heat treatment furnaces, more than 150 processing machine tools, and has large CNC lathes, CNC grinding machines, CNC milling machines, CNC double-sided milling Machines, CNC BORINE MACHINES and Other DomeStic and International Advanced Production and Processing Equipment, and all Kinds of Production Equipment Are Equipp Ed with without Interface, Which Creates A Strong Prorequisite for the Company's Subsequent Digital Transition and Upgrading.

Thanks to advanced equipment and production technology, the production range of Chaoyang Lianqiang has been expanding. At present, it can produce more than 30 products including centrifugal casting rolls, conventional cast iron rolls, semi-steel rolls, high- speed steel rolls, and composite cast steel rolls. A category of roll products. The first phase of the project can produce 20,000 tons of centrifugal casting rolls and 5,000 tons of conventional casting rolls. After the project is fully completed and reaches production and efficiency , the annual production capacity can reach 50,000 tons.

Sun Jianxun said that in the future, Chaoyang Lianqiang will gradually introduce various digital equipment and management systems according to the digital upgrading and transformation plan. Process integration machine tools and other projects to break the tradition and change the semi-manual operation form of roll casting In history. In termly, Chaoyang Lianqiang Will Make The Production Data Transmission Timely, Charted and Visualized Through ERP System UPGR ADE, MES SYSTEM and the Construction of a Composition Network of the Company's Digital Subsystem. in Terms of QMS Digital Upgrade , Chaoyang Lianqiang will realize the construction of automatic collection, induction, statistical analysis and report generation of test data through the comprehensive digital upgrade of testing equipment.

At the same time, in order to adapt to the operation mode of advanced equipment and digital system, Sun Jianxun and his team fully launched the construction of quality engineering, and simultaneously improved the ability of employees to cope with the upgrading of equipment and pro induction models .In the future, enterprises will make changes to management work at the following three levels: the upper layer relies on the comprehensive management of ERP, the middle layer relies on the MES high-end production execution system, and the lower layer revolves around PLC with information functions, radio frequency tools, hand input terminals, and digital records. Instruments and other station operation equipment with digital acquisition functions realize digital and efficient management.

In terms of process technology, Sun Jianxun knows that science and technology are the first driving force for the sustainable development of an enterprise. Enterprises must always maintain innovative research and development capabilities and technical service capabilities, and synchronize with the world' s advanced level, so as To form a market-oriented, technology-based Research and development is a chain, and the innovation system of production, learning and research driven by production innovation is vigorously promoting the research and development of roll production technology innovation.Through the establishment of the metallurgical roll engineering technology research center, the introduction of experts and the promotion of advanced technology, Chaoyang Lianqiang has gained strong roll research and development and manufacturing capabilities. At this stage, the company has 5 invention patents, 1 utility model patent, and More than ten invention patents are being declared and accepted. Among them, the high-speed steel roll developed by the company is the first in China. With its superior physical properties and performance, it has created a new era of wire and bar rolling.

 

The picture shows Zhang Jian (third from left), deputy secretary of the Chaoyang Municipal Party Committee, inspecting Chaoyang Lianqiang rolls accompanied by general manager Sun Jianxun (second from left).

 

Everbright's brand effect firmly occupies the market

Sun Jianxun believes that at present, due to low steel prices and declining profits, most rolling mills, especially rod and wire production enterprises, are in a state of meager profit or loss. Many rolling mills are trying every means to increase the operating rate of rolling mills and reduce rolling costs in order to obtain better benefits. The key to reducing rolling costs is mainly to improve the quality of the rolls and prolong the service life of the rolls, thereby increasing the operating rate of the rolling mill and the yield of rolled products. High-quality high-speed steel rolls with high cost performance and longer service life are gradually becoming the first choice of rolling mills.

The picture shows Zhang Zheng (middle), Chairman of Chaoyang Lianqiang Roll Co., Ltd., accompanied by General Manager Sun Jianxun (right), investigating in the company's workshop.

 

The roll is the main component of the rolling mill and the most important consumable spare part in the steel rolling production process. It is not only related to the rolling cost and the operating rate of the rolling mill, but also directly affects the dimensional accuracy of the rolled material and the surface quality of the rolled material. Low-priced low-quality rolls can reduce purchase costs, but they will reduce the operating rate of the rolling mill and greatly increase the rolling cost per ton of rolled steel. Under the condition That other fixed costs cannot be changed, the total cost of rolling will be significantly reduced only if the operating rate of the rolling mill is increased and the production volume is increased.And enhancing the stability of the dimensional accuracy of rolled products can directly and effectively increase the benefits of the enterprise.

The picture shows a modern roll processing machine tool

 

High-speed steel has strong wear resistance and hardness, especially high red hardness at high temperature, and the rolls made of it have excellent cost performance, which is a sharp tool to improve the operating rate of rolling mills. Chaoyang Lianqiang is the first enterprise in my country to successfully develop high-speed steel rolls. Its high-speed steel roll technology obtained the invention patent as early as 1997, and has won the second prize of the Science and Technology Progress Award of the Ministry of Agriculture and the thirteen d prize of the Science and Technology Progress Award of Hebei Province.

The core of high-speed steel roll manufacturing technology is to use high-speed steel material in the working layer of the roll, and the core part is made of ductile iron material or graphite steel material with high strength and good toughness. The two materials are well metallurgically combined through centrifugal composite casting technology. The roll has good comprehensive mechanical properties after spray quenching + multiple high-temperature temperature treatments. With the popularity and application of high-speed steel rolls, its manufacturing technology is also constantly improving.On the one hand, the casting technology has developed from the initial two-layer centrifugal compounding of the working layer and the core to the three-layer centrifugal compounding, adding an intermediate layer between the working layer and the core, thereby greatly improving the heat treatment yield of high-speed steel rolls; on the other hand, The performance of high-speed steel rolls has been further improved by innovating the heat treatment process of the rolls. Chaoyang Lianqiang's new production process of high-speed steel rolls ado pts spray quenching , precisely controls the cooling speed of the rolls, conducts isothermal treatment at a certain temperature, and then tempers them again.Even under the same composition conditions, the roll surface hardness can be increased by 3HSD~4HSD, the roll surface hardness can reach 85HSD~88HSD, the roll surface hardness unevenness is ≤3HSD, and the working layer hardness drop is ≤2HSD.

The high-speed steel rolls developed by Chaoyang Lianqiang are well-known among users. For example, it is mainly used in bar rolling mills for ϕ18mm×2 splitting, ϕ20mm×2 splitting, and ϕ25mm single-wire K2 stands. This set of rolls is equipped with 8 pairs of grooves, the weight of a single billet is 1.95 tons, the rolling capacity of a single groove is 2,500 pieces, the amount of grinding is 2mm~3mm each time, the number of times of use is 20 times , and the total rolling amount is 663,000 tons.

Usually, the rolling capacity of acicular bainite ductile iron roll is 500 pieces in a single groove, the weight of each roll is 8mm~10mm, the number of times of use is 6 times, and the total rolling capacity is 46,800 tons. However , the high-speed steel roll developed by Chaoyang Lianqiang has a single-groove rolling volume and a total rolling volume of 5 times and 14.1 times that of a bainite ball roll, respectively. Due to the characteristics of good wear resistance of high-speed ste el rolls, small amount of turning, high rolling capacity of single groove, etc., it can also shorten the roll changing time of the rolling mill and improve the operating rate of the rolling mill.

The high-speed steel roll developed by Chaoyang Lianqiang can not only be used in hot-rolled narrow-strip mills, but its comprehensive service life is 10.5 times longer than that of high-alloy cast iron rolls. It is also used in many domestic hot-rolled strip production lines, and has achieved good results. . With the continuous innovation of the company's high-speed steel roll manufacturing technology, the products are not only used in strip mills, but also widely used in finished stands, finished front stands , pre-splitting stands, and pre-splitting front stands of bar mills. And high-speed wire rod mill pre-finishing mill unit, spring flat steel mill finishing stand and small section steel mill.When used in a bar rolling mill, the rolling capacity of each single groove is 3 to 5 times that of the accular bainite ductile iron roll.

Sun Jianxun said that with the continuous improvement of high-speed steel roll manufacturing technology and roll quality, it will be widely used in different rolling fields and different rolling racks, so as to realize the replacement of roll materials in steel rolling enterprises and reduce the production of rolls with replaced materials amount, so as to achieve energy saving and social resource conservation, and contribute to the country's carbon peak and carbon neutrality.

The picture shows the rolled high-quality finished rolls

 

The pursuit of green and low-carbon innovation will never stop

 

Sun Jianxun said that under the guidance of the above-mentioned established goals, Chaoyang Lianqiang has also done the following work in green and low-carbon aspects for more than a year:

One is to make full use of solar green energy. All street lamps in the factory area of ​​​​the enterprise are illuminated by solar energy, and the employees' bathing in the workers' home uses solar water heaters.

Second, the company purchased 3.82 million yuan of dust removal equipment, which reduced the emission of foundry smoke and dust and purified the environment of the factory area.

The third is to invest 643,000 yuan to introduce a 770kW fully premixed low-nitrogen condensing gas boiler with the most advanced technology and the highest thermal efficiency in Germany, which is used for heating office buildings and workers' homes in winter . The workshop adopts gas radiant heaters for heating, with high heat radiation efficiency, which saves about 50% of gas consumption compared with traditional heating methods, thereby reducing operating costs and ensuring winter heating for the company's 35,500-square-meter production workshop. By purchasing advanced heating equipment , 1,065 tons of coal can be saved for heating every winter, reducing carbon dioxide emissions, thereby achieving low-carbon green environmental protection.

The picture shows the green benchmarking enterprise of the steel industry chain in 2022

   In addition, the green and low-carbon photovoltaic power generation project that Chaoyang Synnex is planning is also advancing steadily. It makes full use of the company's existing 35,500 square meters of factory roof area and uses photovoltaic power generation to prov ide 5.12 million kwh of green and low-carbon energy for enterprises every year.

"A big country is heavy, and it is accessible to the world. Don't forget the original intention, go forward bravely. Looking forward to the future, when you have high ambitions, Synnex people are willing to be the leader in the roll industry, and bravely climb the pinnacle of the world's roll manufacturing industry. On the road to building a century-old Synnex , Chaoyang Lianqiang walks with the world." Sun Jianxun said.

 

 

 

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