High-Precision Reversing Rolling Mill for Efficient Metal Processing

Industry Trends and Developments in Reversing Rolling Mill Technology

The global reversing rolling mill sector is experiencing rapid evolution driven by demands for higher precision, better yield, and expanded application in diverse materials such as carbon steels, silicon steels, and stainless steels. According to recent findings published by Journal of Materials Engineering and Performance, modernization and digitalization of rolling mill systems are becoming central, with automation, real-time monitoring, and improved process flexibility as key trends (Iron & Steel Review).

Leading manufacturers like Beijing Yang Wang Li Xin Sci&Tech Co.,Ltd. (YWLX) have pioneered in delivering robust and precise reversing rolling mill solutions, including 4hi reversible cold rolling mill and 6 hi reversing cold rolling mill, suiting the growing steel, automotive, and electrical industries.

High-Precision Reversing Rolling Mill for Efficient Metal Processing

Figure 1: Advanced Reversing Rolling Mill System (Image by YWLX)

Key Market Highlights:

Greater adaptation for high-strength, silicon, and stainless strip grades
Emphasis on AI-powered automation and digital control algorithms
Expanded mill widths: 900mm, 1150mm, and 1380mm models prevalent
Precision thickness reduction & tolerance; high productivity without intermediate annealing
Energy efficiency and sustainability targets (as per SteelMint Insight)

Product Overview: Four/Six-Hi Reversing Cold Rolling Mill

The Four/Six-Hi Reversing Cold Rolling Mill manufactured by Beijing Yang Wang Li Xin Sci&Tech Co.,Ltd. stands out with its robust engineering for high-precision cold rolling. Notably the 6 hi reversing cold rolling mill, developed by YWLX, not only processes conventional carbon strip steel, but also targets advanced applications such as oriented/non-oriented silicon steel and stainless strip steel — crucial for transformer, motor, and automotive sheet markets.

Key Features:

Available in 4Hi and 6Hi configurations
Width capacity: 900mm, 1150mm, 1380mm
Minimum achievable thickness: 0.2mm for carbon steel; 0.26mm for silicon steel
High-precision thickness tolerance and superior flatness
Efficient multi-pass reduction design, reducing or eliminating need for in-process annealing
Automated Thickness Control (AGC) and flatness feedback integration
Suitable for Carbon, Silicon (oriented/non-oriented), and Stainless strip production

Processing Capability:

Carbon Steel Strip (SPHC): Thickness reduction from 3.0mm to 0.2mm in six passes
Oriented/Non-Oriented Silicon Steel: Thickness reduction from 0.63mm to 0.26mm in 2–3 passes
Superior finished surface and dimensional accuracy
High-performance for both small batch and continuous production environments

Technical Parameters of Reversing Rolling Mill (Typical Online Data)

Parameter	Unit	4Hi Reversible Cold Rolling Mill	6Hi Reversing Cold Rolling Mill
Maximum Rolling Force	kN	3500–6500	4000–8500
Width Capacity	mm	600–1250	900 / 1150 / 1380
Input Strip Thickness	mm	1.5–5.0	2.0–3.5
Output Strip Thickness	mm	0.2–2.0	0.2–1.0 (carbon steel) 0.26–0.63 (silicon steel)
Max Coil Weight	tons	10–25	10–30
Max Rolling Speed	m/min	300–650	400–900
Thickness Tolerance	mm	±0.006–0.012	±0.004–0.009
Typical Applications	—	Automotive, Appliances, General Engineering	Electrical Steel, Silicon Steel, Stainless Strip, Automotive

Industry Applications & Use Scenarios

Automotive Industry: Precision body panels, chassis strip, high-strength sheets
Electrical & Transformer Manufacturing: Oriented/non-oriented silicon steel for cores
Appliances & White Goods: High-grade strip for refrigerators, washing machine bodies, and more
Stainless Strip Production: For cookware, chemical equipment, precision hose
General Engineering: Universal applications in structural and fabrication segments

Data Visualization: Reversing Rolling Mill Technology Trends & YWLX Product Comparison

Professional FAQ: Reversing Rolling Mill (4Hi / 6Hi) Terminology & Standards

Q1: What are the main material grades that reversing rolling mills can process?

A: Standard grades include low-carbon steels (e.g., SPHC, DC01), high-strength automotive steels, oriented/non-oriented silicon steel (for electrical purposes), and various stainless steel grades used across electronic, automotive, and appliance sectors.

Q2: How does a 6Hi mill differ structurally from a 4Hi reversible cold rolling mill?

A: A 6Hi mill incorporates two additional intermediate rolls between the work rolls and backup rolls, enhancing shape control and allowing for rolling of harder, thinner, or specialty alloys with improved flatness. 4Hi mills utilize only work and backup rolls, suitable for general carbon steel strip.

Q3: What minimum and maximum strip thickness can be achieved by the YWLX 6Hi Reversing Cold Rolling Mill?

A: Minimum finished thickness can be as low as 0.2mm for carbon steel and 0.26mm for silicon steel; maximum incoming strip thickness is typically around 3.0mm, depending on alloy and initial material properties.

Q4: What are typical installation and quality standards for reversing rolling mills in the industry?

A: Installations adhere to ISO 9001, GB/T 51300, and specific steelmaker mill standards (AGC calibration, hydraulic system certifications) to ensure reliability, operator safety, and product uniformity.

Q5: Explain the significance of AGC (Automatic Gauge Control) in modern cold rolling mills?

A: AGC systems maintain precise strip thickness throughout the rolling process, adjusting rolling force and roll position in real time to guarantee excellent dimensional tolerances.

Q6: What is 'pass schedule' optimization in reversing rolling mill operations?

A: Pass schedule optimization involves calculating the optimal number of rolling passes, rolling force and reduction per pass to balance equipment load, final properties, and minimize intermediate annealing. Advanced mills use computational models for this purpose.

Q7: Which surface finish standards does the mill output satisfy?

A: For carbon, silicon, and stainless steel strips, surface finish conforms to JIS G3141, EN 10130, and applicable ASTM A480 standards, typically Ra 0.2 – 0.6μm depending on customer requirements.

Why Choose YWLX for Your Reversing Rolling Mill Projects?

Decades of Professional Experience: YWLX’s engineering and R&D teams have spearheaded implementation of innovative 4Hi and 6Hi reversing rolling mill projects for major state and private steelmakers.
Customizable Solutions: Scalable configuration in widths (from 900mm to 1380mm) and integration of advanced automation (AGC/ AFC/ Level 2/3+ control).
Full Lifecycle Support: From initial design to commissioning, technical upgrades, process optimization, operator training and remote diagnostics.
Authoritative Industry Partnerships: Deep collaboration with universities, research bodies, and global steel forums for continuous improvement and learning.
Strong After-sales and Spare Parts System: Genuine parts, rapid response, and ongoing engineering services maximize productivity and ROI.

Contact us today:
Tel: +86 10-63324628 | Email: Alley.wang@bjywlx.com | Mobile: +86 18630169310

Conclusion & References

The development of reversing rolling mill technology, especially 4hi reversible cold rolling mill and 6 hi reversing cold rolling mill, is opening new realms for steel, electrical, and specialty alloy applications. With strong EEAT (Expertise-Authoritativeness-Trustworthiness), YWLX delivers tailored, data-driven solutions for world-class productivity, precision, and flexibility.

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