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Why Choose Us?
Experienced R&D And Engineering Team
Our R&D and engineering team has more than 20 years of experience in the sheet metal industry. We can provide the best solution for customers.
A Quick Delivery
We will have stock availability of most of standard models and keep some stock for critical components for providing a quick delivery date for any new orders for both standard one and customized one.
Our Purpose
Our intension is to add value to all customers and metal industrial continuously.
Professional Service Team
We will respond to order inquiries within 24 hours.
We Have The Best Solutions for Your Business
Dongguan Xinlijin Technology Co., Ltd. We are a premier leveling machine manufacturer located in Dongguan City, Guangdong Province, China.
Focusing on sheet metal roll straightening machines, including R&D, manufacturing and sales, our professional capabilities enable us to gain more and more customers in domestic and international markets.
We delight our customers with our promise to never compromise quality on price. Clients value our teamwork, expertise and passion to help them succeed now and in the future.
Four-fold or four-high rolling has multiple applications across industries.
Here are five areas in which this technique is commonly utilized:
Steel and Metal Production: Four-fold rolling is widely employed in the production of steel and other metal products.
Aluminum and Non-Ferrous Metal Processing: Four-fold rolling is an essential step in the fabrication of aluminum and non-ferrous metals.
Cold Rolling Mills: Four-fold rolling mills are commonly utilized in cold rolling operations, in which metal sheets or coils are passed between rolls at ambient temperature for processing.
Sheet Metal Forming: Four-fold rolling is a key part of sheet metal forming processes, used to both reduce thickness of metal sheets and provide uniform deformation during bending, shaping, and stamping operations.
Foil Manufacturing: Four-fold rolling is an increasingly popular choice in metal foil production, providing controlled thickness reduction and enhanced surface quality to produce thin and uniform foils used for packaging, insulation, electronics and other purposes.
Four-fold or four-high rolling is an indispensable technique in various metalworking processes, enabling production of high-quality metal products with precise dimensions for use across industries.
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Frequently Asked Question
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Four-fold or four-high rolling is a metalworking process that involves passing a metal strip or sheet through a series of four rollers arranged in a specific configuration to achieve precise thickness reduction and improve the mechanical properties and surface finish of the material.
The four-high rolling configuration consists of two larger diameter working rolls positioned above and below the material, and two smaller diameter backup rolls positioned on either side. The material is passed between these rolls, and by adjusting the gap, speed, and pressure, the process achieves controlled reduction in thickness and ensures uniformity in the rolled metal product.
Four-fold or four-high rolling is widely used in industries such as automotive, aerospace, construction, and manufacturing. It is particularly suitable for producing thin and flat metal products, including sheets, foils, and plates, where precise thickness control and high-quality surface finish are crucial.
The four-fold rolling process is controlled and optimized by adjusting various parameters, including the gap between the rolls, roll speeds, and applied pressure. Advanced monitoring and feedback systems are often employed to ensure consistent and accurate thickness reduction, resulting in high-quality rolled metal products.
Four-fold rolling offers enhanced control and precision in thickness reduction, resulting in improved surface finish and mechanical properties of the rolled metal product. The configuration allows for better distribution of the applied forces, reducing the risk of material defects and providing greater uniformity in the final product.
Our updates and blog posts
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Roller straightening equipment is an important tool in various fields such as manufacturing, construction and metal processing. It can effectively correct and extrude the alignment of steel plates, bars and pipes, ensuring precision and high quality in the manufacturing process.
Secret Elements to Take Into Consideration When Acquiring a Leveler
Leveling machines are important pieces of equipment in different markets for efficient and specific leveling of steel plates and plates. Whether you are in production, construction or metalworking, choosing the best leveler is critical to ensuring precision and high quality for the task.
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With our growing, we believe that we will have more wonderful design and production capacity in the future, to provide customers more perfect integrated customized services.