Tailored specifically for complex structural shapes and heavy pipe manufacturing, DURON’s Deep Groove SG engineering provides deep structural stability and remarkable resistance to mechanical impacts. Traditional nodular castings frequently suffer from sudden failures due to stress concentration at the base of severe profiles; however, our specialized DGSG Rolls utilize a precisely balanced alloy formulation to neutralize this critical vulnerability.
This meticulous metallurgical control ensures an optimal microstructural consistency that maintains stable wear patterns even at the maximum depth of the barrel. Implementing this robust option inside rail, beam, or seamless tube stretch-reducing mills effectively slashes unplanned rolling incidents and ensures high system rigidity under severe thermodynamic shock.
### Chemical Composition & Physical Properties DURON’s Deep Groove SG Iron Rolls are developed to conquer the structural vulnerabilities commonly found in deep-aperture steel forming. By utilizing an advanced horizontal spin-casting process coupled with rigorous stress-relieving annealing, these specialized tools ensure high operational rigidity under catastrophic mechanical impacts. | Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Hardness (HSD) | Tensile (N/mm²) | | :— | :— | :— | :— | :— | :— | :— | :— | :— | :— | :— | | **DGSG – Grade I** | 3.00-3.50 | 1.50-2.20 | 0.30-0.60 | ≤ 0.10 | ≤ 0.03 | **0.60-0.90** | **2.00-3.00** | **0.30-0.50** | **50-70** | ≥ 350 | | **DGSG – Grade II** | 3.00-3.50 | 1.50-2.00 | 0.30-0.70 | ≤ 0.08 | ≤ 0.03 | **0.60-0.90** | **2.20-3.00** | **0.30-0.50** | **70-80** | ≥ 350 | *Metallurgical Highlight: The elevated Chromium (Cr) and Nickel (Ni) design forms a tough, tempered matrix that maintains uniform wear resistance even at the maximum cutting depth of the roll body, preventing premature differential wear across deep pass contours.*
