Another high-end equipment in China reproduce the "car manufacturing" glory. Recently, Zhuzhou Electric Vehicle Co., Ltd., a subsidiary of Zhuzhou Automotive Co., Ltd., won the bid of a super power inverter of the main transmission system of a Chinese company metallurgical mill. This is the first time that China's rolling mill main drive system uses domestic high-power frequency converters, breaking the long-term monopoly of the international giants on the application of this core technology in China's metallurgical industry.
Metallurgical rolling mill is an important strategic equipment in our country. Metal material billet needs to be transformed into metal strip. It is inseparable from the role of rolling mill. Modern industry has higher and higher requirements for metal strip width, surface precision and material hardness. For example Large ships' flight decks and large-diameter oil and gas pipelines require the mill to have extremely high power and control accuracy, both of which are determined by the mill's main drivetrain technology.
At present, China's metallurgical industry equipment from the process of automatic control to the motor, electrical, most of the equipment has been achieved localization. However, its core main drive system: the core control of AC drives and AC / DC converters is basically still monopolized by several international giants. Metallurgical industry, cold-rolled equipment used in the main transmission system AC and DC power inverter has been the field of high-power inverter, "the crown jewel," said. From a technical point of view, ultra-high-power inverter technology threshold is very high; from an economic point of view, the daily metallurgy single rolling line to create the economic value of up to tens of millions or even hundreds of millions of dollars, even if a few minutes self-recovery Failure may lead to scrap blanks in the production line caused direct losses of hundreds of thousands of dollars, so the average company is reluctant and difficult to tackle this technology.
Relying on the accumulated technology accumulated in traction traction system of high-speed railway AC motor for a long time, CSR has formed a super-strong R & D team consisting of seven doctors and completed the development of a 20 MVA AC / DC AC variable frequency drive in October 2013 Successfully implemented the actual engineering application, which broke the monopoly of foreign companies on the main drive system of rolling mill and filled the gap of domestic technology and products in this field. More than 3 years of field application shows that the system's static and dynamic response, reliability and stability and other major performance indicators have reached the level of the same type of cutting-edge products abroad. The winning domestic company is the realization of the era of the first electric drive train drive system commercial orders, opened the metallurgical industry mill equipment super-power IGCT inverter system of independent localization of the road.
Zhuzhou in the car developed by ultra-high power IGCT inverter system is currently the industry's highest technical content of the products, the country has a tremendous strategic, economic and social implications.
Metallurgical industry, a wide range of product lines rolling mill, high-speed wire, H-beam, steel, aluminum with our common car plate, kitchen and toilet stainless steel products required by the cold-rolled strip to be provided through the mill production line. Data show that China's metallurgical industry capacity accounted for more than 50% share of the world, high-power rolling mill main transmission equipment market holdings of more than 4000 units, equipment upgrades and production line upgrades will bring huge market demand is expected to reach tens of billions of dollars in market size . Compared with imported equipment, the localization of the main drive system can reduce the investment cost more than 20% for customers at a time, which does not include the expensive maintenance cost of the imported equipment saved. At the same time, the system can also be expanded and applied to ship electric propulsion, mining, wind power and other fields and has broad market prospects in the future.
Ningbo Yinzhou Leisheng Machinery Co.,Ltd , https://www.nblscasting.com