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Product Description
Yile Machinery is a specialist in the heavy fabrication of custom rotary drums, shells, and cylinders used as the core component in industrial coating machines, granulators, dryers, and kilns. Our expertise lies in transforming heavy steel plates into large, high-precision cylindrical bodies according to customer designs.
We manufacture these robust welded drums for OEMs and end-users in the fertilizer, chemical, minerals, and environmental industries, providing the structural heart of their processing equipment.
Heavy Steel Plate Rolling: We have the capacity to roll thick steel plates (carbon steel, alloy steel, or stainless steel) into large-diameter shells, forming the primary body of the drum.
Professional Welding (SAW): We utilize Submerged Arc Welding (SAW) for longitudinal and circumferential seams. This automated process ensures deep, consistent, and high-strength welds, which are critical for the long-term durability of a rotating drum.
Full Non-Destructive Testing (NDT): The integrity of every weld is paramount. We perform rigorous Ultrasonic Testing (UT) or Radiographic Testing (RT) on all main weld seams to guarantee they are free from defects.
Post-Weld Heat Treatment (Stress Relieving): All fabricated drums undergo a crucial stress relieving heat treatment process. This eliminates internal stresses from welding, preventing distortion and ensuring the drum maintains its precise geometry during operation.
Precision Machining for Perfect Alignment: After fabrication, the drum is machined to achieve critical tolerances. This includes machining the mounting surfaces for the riding rings (tires) and the girth gear to ensure perfect concentricity and smooth rotation.
Specification | Details |
Product Name | Rotary Drum, Kiln Shell, Granulator Body, Coater Cylinder |
Application | Fertilizer Granulation, Chemical Coating, Material Drying, Mineral Processing |
Shell Material | Carbon Steel (e.g., Q345R), Boiler Plate Steel (ASTM A516), Stainless Steel |
Fabrication Process | Heavy Plate Rolling, Certified Welding |
Welding Method | Submerged Arc Welding (SAW) for main seams |
Key Components | We can fabricate the main drum shell, as well as integrated Riding Rings (Tires) and Girth Gears. |
Inspection | UT/RT of welds, Dimensional checks, Concentricity measurement |
Post-Processing | Stress Relieving Heat Treatment, Precision Machining |
Our custom-fabricated rotary drums are essential components for machinery in:
Fertilizer Production: For both granulation and coating drums.
Chemical Processing: For dryers and reactors.
Mining & Minerals: For rotary kilns and scrubbers.
Waste Management & Recycling: For drying and material processing.
Specialist in Large Cylindrical Weldments: We are not just a general fabricator. Our equipment and expertise are focused on producing high-quality, large-scale rotary drums and shells.
Integrated Manufacturing Process: We control the entire production chain: plate rolling, SAW welding, heat treatment, NDT, and final precision machining. This ensures quality and simplifies your project management.
Focus on Quality and Precision: We understand that the concentricity and balance of the drum are critical for the performance of the entire machine. Our quality assurance processes are designed to deliver a perfectly true and stable drum.
Q: Why is Submerged Arc Welding (SAW) important for these drums?
A: SAW is a high-speed, automated welding process that produces very strong, uniform, and deep-penetrating welds. For the long, critical seams on a rotary drum, it is far superior to manual welding in both quality and efficiency.
Q: Do you also manufacture the riding rings (tires) and girth gear?
A: Yes, we can fabricate and machine the entire drum assembly, including the riding rings and girth gear, or prepare the drum for components supplied by you.
Q: What is the purpose of machining the drum after welding and heat treatment?
A: The welding and heat treatment processes can cause minor distortions. Final machining is the only way to guarantee that the mounting surfaces for the tires and gear are perfectly parallel, concentric, and meet the tight tolerances required for smooth, wobble-free rotation.
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