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Walking Beam Furnace

Lindberg Walking Beam furnaces are designed for high temperature sintering of metallic and ceramic materials under controlled atmosphere. The walking beam transport system provides true rectilinear motion to eliminate hearth wear from heavy abrasive loads sliding along the surface of the hearth. This action helps ensure a clean, uncontaminated atmosphere within the furnace. Vertical motion of the beam is accomplished by means of a hydraulically actuated arm connected to a series of interconnected pivot arms with rollers. The rollers support the beam along its length at frequent intervals. Horizontal motion is accomplished by means of a second hydraulically actuated arm connected to the last interconnected beam sections. Adjustable guides are provided to assure alignment of the beam motion. The beam is sectionalized to reduce space requirements for insertion or removal. A mobile beam cart is supplied for conveniently inserting or removing beam sections (one at a time) from either end of the furnace. The controlled rectilinear motion of the Lindberg walking beam maintains accurate alignment and spacing of the load as it progresses through the furnace.

The furnace features a proven refractory design that provides a long-life Dutch arch and keyed hearth. The refractory shapes are installed without mortar to minimize process contamination and compensate for expansion and contraction during thermal cycling. The result is a long service life with very little maintenance.

Furnace chamber cross sections from 6-inches wide x 4-inches high to 15-inches wide x 12-inches high are available. Preheat and sintering furnace chamber lengths, as well as cooling chamber lengths, are tailored to your process time/temperature profiles and production requirements.

Features

• Protected yet accessible hydraulic system
• Reliable and adaptable load transfer
• Flexible sequence control system featuring microprocessor based programmable control
• Proven refractory system
• Solid, round rod molybenum heating elements
• Multi-atmosphere capabilities
• Rugged construction

Benefits

• Maintenance-friendly design facilitates PM procedures
• Reliable transfer of load from air to controlled atmosphere section and vise-versa produces uninterrupted production
• Accurate repeatable results with total sequence control and warning of process failures
• Produces reliable consistent heat throughout the furnace and allows for convenient access to the heating chamber
• Element design minimizes element oxidation and maximizes service life
• Furnace provides reduced electrical power cost per pound of product produced

Options

• Closed loop, automatic-or semi-automatic return conveyor systems
• Multi-point temperature recording and/or event data loggers

Applications

• Brazing
• Calcining
• Carbon firing
• Ceramic firing
• Metallizing
• Sintering