At Deem Roll Tech Ltd, our manufacturing process is a testament to our commitment to quality and precision. Here’s a look at how we create our superior products:
Our operations commence in the melting phase. Here, an assortment of materials such as steel and roll scrap, pig iron, and diverse alloys are harmoniously combined in our state-of-the-art induction furnaces. Each furnace is designed to handle a range of capacities, up to 12 tonnes, enabling a consistent and efficient melting process.
Next, we move to the casting stage. Utilizing horizontal spin casting techniques, we pour the highly alloyed, molten roll shell iron into a rotating steel mould of our own design. Simultaneously, we cast the core into the now solidified roll shell, forming the bearing area and driving connection. A freshly cast roll can weigh up to 24 tonnes, which is meticulously processed down to a final weight of up to 14 tonnes.
Next, we move to the casting stage. Utilizing horizontal spin casting techniques, we pour the highly alloyed, molten roll shell iron into a rotating steel mould of our own design. Simultaneously, we cast the core into the now solidified roll shell, forming the bearing area
and driving connection. A freshly cast roll can weigh up to 24 tonnes, which is meticulously processed down to a final weight of up to 14 tonnes.
We leverage centrifugal casting to craft dual-material rolls. The barrel surface showcases high heat and wear resistance, while the core boasts superb mechanical strength. The layer’s uniform thickness and compact structure enhance performance under high heat, surpassing traditional static rolls
We employ the Static Casting process to create rolls with uniform chemical properties. We manipulate roll performance to meet specific needs via cooling speed and heat treatment techniques. Our process caters to various mills, including roughing, section, rail and beam, universal, edge, wire, and rod mills, using both top-pour and bottom-pour casting methods. We can also manufacture double poured rolls in this method.
In the subsequent heat treatment phase, we employ a finely-tuned process, the specifics of which are determined by the roll’s type and the exact requirements of our clients’ rolling mills. This crucial stage can extend up to six weeks, ensuring the roll develops the perfect material properties for its intended application.
In the final machining stage, we meticulously shape the rolls to their required dimensions. The rolls produced at Deem Roll Tech Ltd can reach lengths of up to 6 metres and diameters up to 1,300 mm. Our expert machinists employ techniques such as turning, milling, and grinding to give the rolls their specific shape and surface finish. We stringently verify the measurements of the finished rolls, underscoring our unwavering commitment to precision and quality.
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