Crucible Furnaces

A workhorse in the industry, SINC Thermal crucible furnaces offer a high degree of flexibility and overall efficiency. Whether used as a melting furnace, holding furnace or both, crucibles are a perfect solution for cost effectiveness and ease of implementation.

Available in static, tilting, or mobile variations and capable of daily cycling from melt down to fully empty bath, crucible furnaces offer unique flexibility for job shops producing several different alloys in relatively smaller batches. Crucible furnaces are the simplest and most flexible holding furnaces for both large and small melt rooms and allow for quick alloy changes.

Holding Crucible
Melting Crucible

Crucible Furnace Options

  • Gas-fired units offer faster melting rates than electric units and are suitable for higher melting point alloys
  • Electric furnaces offer excellent metal quality and silent operation.
  • Excellent SCR temperature control for high turndown ratios and simple to maintain, package burners.
  • Electric furnaces use multiple elements wired in parallel to avoid shut down if one element lost.
  • Suitable for Al alloys, Zn alloys, Mg alloys and lead.
  • Flexible melting and holding capacities depending on metal and alloys.
  • Available for Electric, Natural Gas or LPG / propane).
  • Available in stationary or tilting versions for optimum temperature control.
  • Smallest installation footprint allows for close installation at the point of use.
  • Flexible melting and holding capacities depending on metal and alloys.

Crucible Furnaces

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Output Methods

Hand ladle, auto ladle, dosing/pump or direct-pour methods are available.

Lids are available in several types and styles:

– All furnaces are delivered as standard with a manual lift off lid.
– Split “Butterfly” lid:  allowing 1/2, 1/3 or 2/3 of crucible-opening access.
– Full-hinged cover/lid.
– Lift-and-swing-aside cover.
– Dome cover: allowing for ingot charging above the crucible top.

Covers are available as manual or pneumatically operated versions depending on furnace size and configuration.

Additional Considerations:

– Type of charge material and mix.
– Volume demand of molten metal every hour.
– Transfer rates and ladle size.
– Holding temperature requirements.
– Alloy to be melted, held and cast; aluminum, zinc, magnesium.
– Degassing requirements prior to casting.
– Central melt or “point-of-use” melting.
– Working hours: 8×5 days shift up to 24/7 continuous.
– Burners and power-connection-points orientation and placement.
– Emergency run-out port orientation and placement.
– Manual or pneumatically-operated functions.

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