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Significant Breakthrough! Successful Development of Longest Domestic Centrifugally Cast Duplex Steel Vacuum Roll (L7500)
2026-03-12
For years, high-end vacuum rolls have been critical components in papermaking machinery. Today, Weizhen has achieved a major milestone with the successful development of a 7.5-meter centrifugally cast duplex steel vacuum roll for 6.6-meter paper machines. This marks a significant advancement in high-end stainless steel casting technology and strengthens our ability to deliver innovative solutions for global papermaking applications.
PART.01 Breaking New Ground: The Birth of the Longest Vacuum Roll Achieving a Leap from "0 to 1"
Weizhen's successful casting of this integrated centrifugally cast duplex steel vacuum roll sets a new benchmark in domestic production:
- Leading Specifications: The finished length reaches 7500mm (with a rough blank length of 7650mm), and the diameter exceeds 900mm, pushing the boundaries of current manufacturing capabilities.
- Process Innovation: Utilizing advanced integral centrifugal casting technology, the roll was successfully poured in one operation, overcoming key challenges in temperature control, alloy composition, and microstructure uniformity.
- Superior Material: High-performance duplex stainless steel is used, offering excellent corrosion resistance and high strength. This achievement represents a major step forward in Weizhen's capability to deliver complex, high-integrity components.
PART.02 Building Strength: Advancing Technology from "Capable" to "Exceptional"
Vacuum rolls play a vital role in dewatering efficiency and paper quality. Weizhen's breakthrough in centrifugally cast duplex steel vacuum rolls ensures stable performance under extreme conditions of high speed, high humidity, and strong corrosion. By mastering advanced casting and heat treatment processes, we guarantee superior material density and consistent mechanical properties. This transition from basic manufacturing to exceptional quality reflects our commitment to technological excellence.
PART.03 Value Realization: Delivering Enhanced Solutions for Global Customers
This achievement delivers tangible benefits for customers worldwide:
- Faster delivery cycles through optimized production processes.
- Higher reliability and extended service life due to improved material integrity.
- Consistent quality across all units, meeting stringent international standards.
- A proven track record in delivering complex components for demanding industrial applications.
These advancements position Weizhen as a trusted partner for papermaking equipment manufacturers seeking reliable, high-performance solutions.
PART.04 Moment of Glory: Honoring the Innovation Team
Behind this success is a dedicated team of engineers and technicians who embraced technical challenges with determination. Through continuous experimentation, precise optimization, and unwavering focus, they transformed design concepts into real-world performance. Their innovation and dedication are the foundation of Weizhen’s growing reputation for engineering excellence.
PART.05 Looking Ahead: Deepening Expertise and Expanding Global Collaboration
The development of this 7.5-meter vacuum roll is not just an achievement—it is a new starting point. Weizhen remains committed to advancing high-end stainless steel casting technology and expanding our portfolio of critical components for the paper and pulp industry. We look forward to collaborating with global partners to drive innovation and deliver smarter, faster, and more reliable solutions for the future of papermaking.
