Recently, MCC Southern Continuous Casting received a thank-you letter from CITIC Taifu Daye Special Steel Co., Ltd. regarding the company's independent research and development achievement - high-efficiency round billet crystallizer, which has been applied on the 1 # continuous casting machine of the electric furnace plant ɸ Thank you for successfully and stably increasing the production speed of 155 section special steel to 2.59m/min, achieving significant benefits in improving quality and increasing speed.

The 1 # continuous casting machine mentioned in the thank-you letter was founded in the early 1990s and has undergone multiple major renovations to become a professional casting machine for producing special steel round billets. Originally, it used ordinary crystallizers. When the casting speed exceeded 2m/min, the quality of the continuous casting billet was extremely unstable, with frequent defects such as cracks and segregation, and low production efficiency.

Since receiving the renovation request, the expert team of the continuous casting company has conducted a detailed calculation and analysis of the shortcomings of the original crystallizer based on on-site conditions. After multiple rounds of technical scheme communication, a set of efficient crystallizers suitable for round billets has been designed. After practical testing, we have successfully ɸ The production speed of 155 section special steel has been increased to 2.59m/min, achieving a "double improvement" of casting speed and billet quality with small improvement investment, and the accident rate has been significantly reduced, which has been highly recognized by the owner and requires a comprehensive replacement of the existing ordinary crystallizer.

Extended Reading

High casting speed of square billet: first in China

Efficient continuous casting technology is a continuous casting system technology that focuses on high casting speed and is based on the production of high stability, high quality, high temperature and defect free billets, achieving efficient production.

MCC Southern Continuous Casting has been committed to the research and development of high-efficiency technology for small square/round billets for more than ten years, overcoming multiple common industry problems, and pioneering the development of uniform and strong cooling crystallizers, high-frequency precision vibration devices, etc. With the upgrading, breakthroughs, and comprehensive applications of key technologies such as high-pressure and strong cooling, three-dimensional heat transfer control models, it has created milestone milestones in the speed range from 3.5m/min to 6.02m/min, achieving the highest speed record for small square billets in China, Strive for world-class advanced level.

Relying on the continuous innovation and upgrading of high casting speed technology for square billets, MCC Southern Continuous Casting has formed an efficient continuous casting concept with "uniform strong cooling" as the core concept, high-efficiency core technology as the leading, and comprehensive standardized management of design, manufacturing, and production. Based on this, efficient continuous casting EPC engineering and technical services have been carried out. Throughout the country, Baosteel Wuhan Iron and Steel Co., Ltd., Fujian Sansteel, Liugang, Hegang Leting More than ten high-efficiency billet continuous casting sample factories, including Jin Shenglan.

From square billets to round billets, from plain carbon steel to special steel: leaps and upgrades

Based on continuous theoretical innovation and rich engineering practice in the field of high casting speed and special steel continuous casting, with the development goals of reducing flow and increasing speed of full bloom and variety steel casting machines, and efficient homogenization production, MCC Southern Continuous Casting accelerates the exploration of the horizontal extension of efficient continuous casting technology application scenarios from small billets to round billets, large billets, slabs, and irregular billets, as well as the vertical expansion from ordinary carbon steel to various special steels, and in Liugang, Zhongtian Steel Baowu Masteel has successfully promoted its application.

▶ 2021- Liugang Fangchenggang Ten Stream Small Billet Continuous Casting Project

▶ 2022- Zhongtian Steel Ten strand Small Billet Continuous Casting Project

▶ 2023: Baowu Ma Steel Special Steel Eight strand Small Square Round Billet Continuous Casting Project

The project integrates a series of advanced technologies and equipment such as quality improvement, intelligent manufacturing, and centralized control, covering mid to high-end markets such as bearing steel, gear steel, spring steel, and cold heading steel. It has achieved production upon production, with a maximum casting speed of 3m/min and an annual output of 1.2 million tons, creating a historical record of high content of small billet continuous casting technology and first-class product added value.

In the future, MCC Southern Continuous Casting will make further efforts, continue to steadily build on the path of efficient and high-quality development, lead technological innovation and equipment upgrading, demonstrate the brand strength of the "single champion demonstration enterprise", and assist in the higher quality development of the steel industry.