Recently, Jilin Jianlong achieved a milestone breakthrough in the field of high-end non-oriented electrical steel, successfully overcoming the challenge of producing 0.15mm ultra-thin high-grade products (15JWV1000), which is hailed as the "Mount Everest of technology" in the industry. The key performance indicators, such as product thickness uniformity, magnetic induction, and iron loss, have all reached the industry-leading level. At the same time, it also achieved a breakthrough in the rolling of 0.10mm ultra-thin non-oriented electrical steel cold-rolled coils.
These two achievements mark Jianlong Group's achievement of full-specification and full-category coverage of non-oriented electrical steel, ranging from "conventional to ultra-thin to ultra-thin". Its overall technical capabilities have jumped to the forefront in China, providing independent and controllable core material support for new energy vehicle drive motors, high-end variable frequency compressors and precision servo systems.
To achieve breakthroughs across all grades and specifications, Jilin Jianlong focused on technological breakthroughs and systematic development, launching a comprehensive "quality revolution."
In terms of technological breakthroughs, the company upgraded equipment and carried out technological transformations to improve the quality control capabilities and equipment precision of the entire process. For example, optimizing the converter bottom blowing layout and gas supply mode, improving the oxygen lance nozzle structure, perfecting the slag blocking and slag detection functions of the sliding plate, introducing RH vacuum self-adjustment, and optimizing the key structure of the tundish significantly improved the precision of chemical composition control. Meanwhile, the technological transformation of the intelligent combustion system of the hot rolling furnace and the improvement of the edge heating function provided support for precise temperature control of silicon steel substrates. More than 30 equipment transformations, from normalizing and pickling to the 20-roll mill and continuous annealing unit, ensured high surface quality and performance stability for products ranging from conventional to ultra-thin specifications.
At the same time, Jilin Jianlong has built a quality management system with "full participation and full process coverage" around a consistent quality management mechanism, with SOP (Standard Operating Procedure) and CP (Control Plan) as the core tools. This ensures that every process parameter and every operation is accurately and controllably executed. Furthermore, by establishing a production quality review mechanism and a closed-loop management process for problem lists, a virtuous cycle of "prevention-control-improvement" has been formed.
In recent years, Jilin Jianlong has consistently adhered to the deep integration of systematic construction, management innovation, and technological breakthroughs. It has built a complete product system for non-oriented electrical steel, ranging from low-grade to high-grade. The proportion of high-grade products has increased from 16% to over 80%, and its high-end products are widely used in mainstream markets such as new energy vehicles, high-efficiency motors, and smart home appliances.
In the future, Jilin Jianlong will continue to be guided by systematic management, promoting the minimization of management units and full-process quality traceability. With its high-quality products and services, it aims to provide solid support for the high-quality development of my country's high-end manufacturing industry.