Copper mold assembly line is a continuous steel casting equipment that receives molten steel injected from the intermediate tank and solidifies it into a solid shell according to the specified cross-sectional shape. It is one of the most critical furnace spare parts of the continuous casting machine, and its structure, material, and performance parameters play a decisive role in the quality of the casting billet and the production capacity of the casting machine.
Copper mold is a groove shaped container with a jacket on the wall or a snake tube inside, used to heat or cool the solution in the tank. The crystallization tank can be used as an evaporation crystallizer or a cooling crystallizer. To improve the production intensity of crystals, an agitator can be added in the tank. Crystallization tanks can be used for continuous or intermittent operations. The crystals obtained through intermittent operation are relatively large, but they are prone to forming clusters and entraining the mother liquor, which affects the purity of the product. This crystallizer has a simple structure and low production intensity, making it suitable for the production of small batch products such as chemical reagents and biochemical reagents.
Square Billet mold: From 60mmx 60mm to 700mmx 700mm
Round billet mold: From Φ 80mm to Φ 1000mm
Rectangular billet mold: From 70mm x 110mm to 550mm x 720mm
| Item | Typical Value / Range | Remarks |
| Assembly Type | Billet (Square/Rect), Round, Slab (Plate) | Core component is the Copper Tube or Copper Plate |
| Section Size (Inner) | Square: 80x80 – 500x500 mm | Matches the desired cast product dimensions |
| Rect: 120x240 – 300x500 mm | ||
| Round: Ø90 – Ø800 mm | ||
| Cast Radius (R) | R3500 – R16000 mm (Straight mold for R=Inf.) | Determines the curvature of the copper tube |
| Mold Length | 700 – 1000 mm | Standard is usually 800 mm or 900 mm |
| Wall Thickness | 6 – 24 mm (Billet) | Thicker walls for larger sections/higher pressure |
| 10 – 50 mm (Slab) | ||
| Copper Material | DHP (SF-Cu), Cu-Ag, Cu-Cr-Zr | Cu-Ag/Cr-Zr for higher strength & heat resistance |
| Coating Type | Chrome (Cr), Ni-Cr, Ni-Co, Ni-Fe | Applied to the inner casting surface |
| Coating Thickness | 0.06 – 0.15 mm (60 – 150 μm) | Hard chrome plating is most common |
| Taper Design | Single, Double, Multi, Parabolic, Convex | Essential for compensating steel shrinkage |
| Cooling Water Gap | 3.5 – 5.0 mm (Typically 4 mm) | Gap between copper tube and inner jacket (±0.2mm tolerance) |
| Water Flow Velocity | 6 – 12 m/s | High velocity for efficient heat extraction |
| Water Pressure (Inlet) | 0.8 – 1.5 MPa | Test pressure usually 1.2–1.5x working pressure |
| Foot Roller Qty | 4 sides (Billet) / 2 sides (Slab) | Guides strand exit; gap typically 0.3–0.5 mm |
| Spray Nozzle Type | Flat Fan (2-3 rows) | For secondary cooling right below the mold |
| Mold Life (Campaign) | 3,000 – 15,000+ casts | Depends on steel grade, coating, and operation |
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