Deep Vacuum Degassing Unit

3 month ago

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Xi'an Gaole Electromechanical Equipment Co., Ltd

4 month

Product details

How About The 120 ton VD VOD Refining Furnace？

The 120 ton VD VOD Refining Furnace is a dual-mode vacuum refining system custom-designed for medium-sized steel smelting enterprises. It fills a market gap where 80-metric-ton small furnaces lack sufficient capacity and 150-metric-ton large furnaces entail excessive investment costs for the facility. With a rated molten steel processing capacity of 120 metric tons, a single unit integrates two core smelting processes: VD (vacuum degassing) and VOD (vacuum oxygen decarburization).

The equipment processes molten steel from electric arc furnace, converters, and Ladle Refining Furnace, performing processes such as dehydrogenation, denitrification, deep deoxidation, desulfurization, ultra-low-carbon decarburization, inclusion removal, and precise alloy fine-tuning in a sealed, high-vacuum environment. It provides a one-stop solution to common challenges in stainless steel and high-end alloy steel production, such as excessive gas content, significant compositional deviations, and poor corrosion and fatigue resistance.

Xi’an Gaole Jidian independently designs and manufactures the complete system. It has been successfully deployed in multiple 120 ton class steelmaking production lines, including those at Zhongyuan Neipei Special Steel and Taizhou Yading Stainless Steel. All equipment undergoes comprehensive high-temperature hot testing prior to shipment, with operational stability, vacuum sealing performance, and automation control precision meeting the standards of top-tier metallurgical equipment.

Six Key Differentiating Advantages (Compared to 80-metric-ton and 150-metric-ton Models)

1. Precisely Matched Capacity for Maximum Cost-Effectiveness

Designed for 100–130-metric-ton converter/electric arc furnace production lines, it eliminates the need to expand into oversized facilities. Compared to large 150-metric-ton VD/VOD furnaces, it reduces costs by more than 22% in equipment procurement, civil engineering, and vacuum system energy consumption; Compared to 80-metric-ton small furnaces, per-furnace production capacity increases by 50%, aligning with the annual steel production targets of 300,000–800,000 metric tons for medium-sized steel mills and achieving a perfect balance between capacity and cost.

2. Rail-mounted vacuum tank for higher ladle loading/unloading efficiency

The rail-mounted vacuum tank structure allows ladles to enter the tank laterally. Combined with a side-opening sealed tank lid, this reduces loading and unloading time by 30% and stabilizes the refining cycle at 22–35 minutes, ensuring the steelmaking line operates at a consistent pace and supporting continuous three-shift production.

3. One Button Switching Between Dual Modes for Flexible Production of Multiple Steel Grades

The PLC program features two independent smelting process curves—VD and VOD—built-in. Switching between them requires no manual modification of piping or oxygen lances, allowing for flexible production of carbon steel and stainless steel based on orders. Small and medium-sized steel mills do not need to purchase two separate specialized refining furnaces, significantly reducing space and equipment investment.

4. Lightweight, Reinforced Tank Design Balancing Strength and Ease of Maintenance

The tank is constructed from low-alloy, high-strength pressure vessel steel plates and undergoes comprehensive non-destructive testing. While meeting the load-bearing strength requirements for a 120-metric-ton ladle, the structure’s weight has been optimized. Equipped with a split-type vacuum piping system and modular water-cooling components, disassembly and maintenance for repairs do not require large lifting equipment, reducing daily maintenance hours by 40%.

5. Two Energy Efficient Vacuum Unit Options to Suit Different Plant Conditions

Customers can choose between a steam-jet vacuum unit and a dry, oil-free vacuum unit based on their needs. The dry unit requires no boiler, saving water and electricity, and is suitable for new steel mills without steam supply. The steam unit offers faster pumping rates and is suitable for retrofitting older plants with existing power plants. Both solutions can achieve a ultimate vacuum of ≤67 Pa.

6. Turnkey Delivery and One-Stop Service; Shipment Only After Successful Hot Testing

Xi’an Gaole Electromechanical provides a complete set of supporting systems, including the main unit, hydraulics, water cooling, dust removal, and electrical controls. Before shipment, the equipment undergoes a full-process high-temperature hot test; delivery occurs only after all vacuum seals, oxygen lance operations, and automated interlocks have been fully commissioned and meet standards. On-site installation, operator training, and process formulation guidance are provided concurrently with delivery.

Target Customers and Production Scenarios

1. Newly Built Medium-Sized Stainless Steel Mills

Enterprises with an annual production capacity of 300,000–800,000 metric tons of stainless steel plates, tubes, and forgings, purchasing a complete 120-metric-ton LF furnace system to establish an integrated stainless steel refining production line.

2. Upgrading Traditional Carbon Steel Mills to Produce High-End Special Steels

For existing 100–130-metric-ton converter production lines, adding a vacuum refining process to expand product ranges to include bearing steel, spring steel, and high-strength steel for military applications, thereby increasing product value.

3. Technical Upgrade Projects for Legacy Plants

The existing 80 ton small vacuum furnace has insufficient capacity, and space constraints prevent the installation of large 150 ton equipment. Replacing the 120-metric-ton VD/VOD furnace allows for capacity upgrades with low civil engineering and renovation costs.

4. Equipment Supplier for Special Steel Manufacturers

The smelting of specialty steels for wind turbine main shafts, hydraulic cylinders, precision bearings, and corrosion-resistant pressure vessels requires strict standards for molten steel purity and gas content.