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Foundry Core Dryer

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Microwave Drying Process

Foundry core drying is the process of removing moisture and volatile substances from sand cores used in metal casting, ensuring structural integrity and dimensional accuracy during the molten metal pour. Traditional drying methods rely on hot air ovens or gas-fired chambers, which are energy-intensive, time-consuming, and can lead to non-uniform drying or core cracking. Microwave technology offers a superior alternative by enabling volumetric heating—penetrating deep into the core and removing moisture uniformly from within. This results in faster drying times, reduced energy consumption, minimal surface overheating, and improved core strength, making microwave core drying a cleaner, more efficient, and cost-effective solution for modern foundries.

Continuous Foundry Core Dryers

Microwave drying is poised to revolutionize foundry core drying by replacing outdated and inefficient thermal methods with rapid, uniform, and energy-efficient processing. Unlike conventional systems that heat from the outside in, microwaves dry the core internally, reducing cycle time, improving product consistency, and cutting operational costs. At Enerzi, we offer a range of advanced microwave core dryers tailored for various foundry needs—including Conveyorised Ovens for continuous production lines, Trolley-Type Pusher Ovens for batch processing, and Semi-Automated Table-Trolley systems for flexible, mid-volume operations. This shift not only enhances productivity and core quality but also supports foundries in achieving cleaner, greener manufacturing.

Enerzi offers a wide range of Hybrid Microwave Drying Ovens for Foundry Core Drying with the following specifications.

Salient Features

  • Microwave Frequency of 2450 MHZ
  • Throughput ranging from 500 to 10000 kg/hour (10 to 240 Tonne / Day)
  • Typical Cross Section of 400 to 1500mm (W) and 300 to 1200 mm (H)
  • Typical Length Of the System ranges between 4 to 50 meters
  • Conveying System with speed controls from 25 to 250 mm/mins
  • Maximum Process Temperature from RT to 160 deg. C
  • Installed Microwave Power of 9 kW to 120 kW
  • Step-less Power Control using Microcontroller Module
  • Digital Display of Power and Temperature
  • Exhaust Air Circulation of 100 to 1000 cfm
  • Highly Integrated Interlocks
  • Industrial PLC with user friendly controls
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