Upward Continuous Casting

How Upward Continuous Casting Works

In the upward continuous casting process, molten copper is held in an induction furnace at precisely controlled temperature. A graphite crystallizer die is positioned with its inlet submerged below the melt surface. The solidified copper profile is withdrawn upward through the die at a controlled speed, while fresh molten copper continuously replaces it from below.

Because the die inlet is submerged in the melt and the process operates in a reducing atmosphere, oxygen contamination is essentially eliminated. The copper solidifies directionally from the die contact surfaces inward, producing a column-grain structure with minimal porosity and excellent surface finish.

Multiple crystallizer positions can be arranged on a single furnace, making this an efficient process for producing multiple strands of the same profile simultaneously.

Process Advantages

• No oxygen pickup — melt surface is protected by inert atmosphere
• Near-net-shape output reduces downstream processing steps
• Low scrap rate and high material yield
• Suitable for cathode copper and high-purity scrap feed
• Compact footprint vs. vertical DC casting

Applicable Products

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