cdocastPurchase the most advanced small upward continuous casting machines in china
CDOCAST CDO-UP45 and CDO-UP70 combine medium-frequency induction melting, a water-cooled crystallizer and servo-controlled upward pulling in one compact machine. The two models are rated for 50 kg and 100 kg of copper and are used to cast approved rods, wire feedstock, tubes and strip or plate sections.
A small upward continuous casting machine—also called an upcast continuous casting machine—melts metal in a crucible and solidifies it inside a water-cooled crystallizer positioned in the melt. A traction system then pulls the solidifying strand upward in a controlled intermittent or continuous sequence.
The compact integrated layout is intended for flexible small and medium production rather than a large 24/7 oxygen-free copper rod plant. By changing the approved crystallizer and traction arrangement, the same platform can be configured for different rod, wire-feedstock, tube and strip sections. Product feasibility still depends on alloy, section size, strand count, cooling and required quality.
Both models share the same published footprint, temperature range and drawing speed. The main differences are rated copper capacity, installed power and machine weight.
Compact 45 kW configuration rated for 50 kg of copper. Suitable when the required product section, strand arrangement and daily output can be achieved within the smaller melt capacity.
Larger 70 kW configuration rated for 100 kg of copper. Select it when the approved product and production plan need a larger molten-metal reserve.
Compare the published capacity, power, temperature, traction and installation data for CDO-UP45 and CDO-UP70.
| Specification | CDO-UP45 | CDO-UP70 |
|---|---|---|
| Voltage | 3 phase, 380 V, 50/60 Hz | 3 phase, 380 V, 50/60 Hz |
| Power | 45 kW | 70 kW |
| Applicable metals | Gold, K-gold, silver, copper, brass, bronze and approved alloys | |
| Rated capacity | 50 kg copper | 100 kg copper |
| Maximum temperature | 1600°C | 1600°C |
| Temperature control range | 0–1300°C | 0–1300°C |
| Published melting time | ≤40 minutes | ≤40 minutes |
| Drawing speed | 1000 mm/min | 1000 mm/min |
| Published casting scope | Metal rod, pipe or tube, plate or strip; wire feedstock subject to crystallizer and process approval | |
| Dimensions (L×W×H) | 1260×690×1710 mm | 1260×690×1710 mm |
| Machine weight | 400 kg | 450 kg |
Capacity is rated using copper; equivalent charge weight changes with metal density, crucible geometry and safe working level. Melting time and drawing speed are published values, not guaranteed output for every alloy or section. The older PDF catalog lists different dimensions and melting-time values, so final supply must follow the current approved quotation and layout drawing.
These are typical dimensional ranges published on the existing page. Every crystallizer and product drawing should be checked before ordering.
Product quality depends on the balance between molten-metal condition, crystallizer heat removal and the pull–pause traction program.
Load clean, dry metal into the crucible and melt it under the approved atmosphere or melt-surface protection method.
Set the alloy-specific temperature and allow composition, bath condition and slag control to stabilize before casting.
Clean, controlled cooling water removes heat through the crystallizer so a stable solid shell can form.
The servo traction mechanism follows the approved pull distance, pause and speed to draw the strand vertically from the melt.
Guide, coil or cut the product, then check size, surface, ovality, wall thickness, cracks and internal quality as required.
The crystallizer and pulling program are product-specific; they should be quoted from the finished section rather than selected only from nominal machine capacity.
The crystallizer establishes the product cross-section and removes enough heat to form a pullable shell. Water leakage, scale, unstable flow or an incorrect thermal balance can damage quality and create a serious molten-metal hazard, so the cooling circuit must follow the approved specification.
The panel coordinates induction power, temperature indication and traction speed. Pull distance, pause time and cooling must be tuned together: pulling too fast can cause incomplete solidification, while an unsuitable slow cycle can increase friction and reduce output.
Send the material and finished-product information together so the machine, crystallizer, strand count and downstream equipment can be evaluated as one process.
Use the next process to reach final diameter, mechanical properties and delivery form after continuous casting.
Practical answers for factories comparing 50 kg and 100 kg copper, silver and precious-metal upcasting equipment.
The published applications include pure copper, approved oxygen-controlled copper grades, brass, bronze, silver, gold, K-gold and other compatible nonferrous alloys. Provide the exact composition with the inquiry because melting behavior, oxidation protection, crystallizer design, temperature and traction settings vary by alloy.
The machine can be configured for approved solid rods, wire-drawing feedstock, bars, tubes and plate or strip sections. Each product requires a suitable crystallizer, starting tool, traction arrangement and process setting; one generic mould cannot cover every shape and size.
The existing CDOCAST page publishes typical ranges of Φ6–30 mm for silver or copper rod, OD 20–80 mm for tube with wall thickness linked to diameter, and 12–40 mm width by 6–12 mm thickness for plate or strip. These are reference ranges rather than universal guarantees. Confirm the alloy, finished drawing, tolerance, strand quantity and required output before the crystallizer is designed.
Metal is melted in the induction-heated crucible. A water-cooled crystallizer removes heat locally from the molten bath, forming a solid shell. The servo traction mechanism then pulls the strand upward according to the approved pull distance, pause time and speed, creating a continuous or semi-continuous product.
Oxidation control depends on the metal and required quality. For copper, the existing process uses an approved charcoal or graphite-flake melt cover to reduce direct contact with the furnace atmosphere. Precious metals or sensitive alloys may require a different protective method. All charging tools and materials must remain clean and completely dry.
Typical consumables include the silicon-carbide graphite crucible, graphite mould or crystallizer components, insulation and starting components. The original page gives reference service-life figures, but actual life changes significantly with alloy, operating temperature, thermal cycling, protection practice, cooling-water condition and maintenance. Consumable life should therefore be treated as an operating estimate rather than a guaranteed number of heats or tons.
Provide the metal composition, finished product drawing and tolerance, daily output, operating hours, strand quantity, coil or cut-length requirement and downstream process. CDO-UP45 is rated for 50 kg of copper, while CDO-UP70 is rated for 100 kg. The larger capacity is useful only when it matches the required section, crystallizer, production schedule and factory utilities.
The integrated small upward caster offers a compact layout, flexible campaign production and convenient changes between approved crystallizers. Upward withdrawal can also simplify strand collection for rod and wire-feedstock applications. Neither direction is automatically superior: horizontal casting may better suit some bar, strip or high-output layouts, so the decision should be based on alloy, section, output, quality target and downstream handling.
The crystallizer must remove heat at a controlled rate so the strand develops a stable shell before upward withdrawal. Clean, stable cooling helps control surface quality, structure and breakout risk. Scale, blocked passages, unstable flow or water leakage can create serious quality and safety problems. Use the water quality, temperature, pressure and flow stated in the approved technical proposal rather than applying one setting to every product.
Yes. Traction speed, pull distance, pause time and cooling conditions are adjusted for the alloy and section. Pulling too fast or cooling too weak can leave an insufficient solid shell, increasing the risk of leakage, porosity or shrinkage defects. An unsuitable slow cycle or excessive cooling can increase friction, thermal stress, cracking and production time. The published 1000 mm/min drawing speed is a machine reference value, not guaranteed output for every product.
Operators need suitable high-temperature protective clothing, gloves and face protection. Electrical equipment must be grounded, cooling circuits must be inspected for leakage, and water must never contact molten metal. Charges, tools and additives must be dry. Regularly inspect the crucible, crystallizer, graphite parts, traction mechanism and cooling passages, and follow the supplied operating and emergency procedures.
Send CDOCAST your alloy, product section, strand requirement and daily output for CDO-UP45 or CDO-UP70 selection.