Sintering Furnaces by CM Furnace

High-temperature sintering furnaces are used in a number of processes and industries. CM Furnaces provides both production furnaces and batch furnaces that accomodate a wide variety of processes, temperatures, and atmosphere&#;s.

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Production Sintering Furnaces

Typically, the higher-temperature continuous furnaces used for sintering operations are known as &#;pusher furnaces&#; or &#;walking-beam furnaces.&#; A pusher furnace moves the work through on a series of boats or plates (Fig. 2). One boat is pushed against another in a continuous train. A pusher furnace only pauses long enough to remove a boat at the exit end and add one at the entrance end. This is considered a constant push.

A walking-beam furnace utilizes a pusher mechanism to bring the boat into the furnace and place it on the beams. These beams are analogous to a series of rails. The rails are on cams, which lift up, forward and down, essentially walking the boat or carrier through the furnace. At the exit end, the boats are then commonly transferred onto a belt for the cooling section.

CM 400 Series Continuous Sintering Furnace

The CM 400 Series furnaces are available in a variety of configurations from manually loaded lab-scale units to fully automated production systems. Two basic systems are available. The 400A Series utilize exposed molybdenum grid elements and high alumina insulating brick for temperatures up to °C (°F). The 400Z Series employ exposed tungsten rod elements and zirconia insulating brick for temperatures to °C (°F).

The base model includes inclined doors with protective atmosphere flushes, high heat section, and a cooling section. Depending on application requirements other features are added such as preheat sections, wax or binder removal sections, multiple zone controls, low or high dewpoint features, and turn-key automated pusher systems.

CM Rapid-Temp series Batch Sintering Furnaces

Our CM and CM series hydrogen atmosphere batch furnaces can sinter and debind in a single step at temperatures up to C. With atmosphere safety system and mixing panel, it remains one the most flexible, durable batch furnaces made today.

Sintering Furnace Applications

Common applications are the sintering of metal or ceramic powders, carbon/graphite/CFC processing, the manufacturing of hard metals such as Tungsten and Carbide, and most non-oxide advanced ceramics including BN, AlN, SiC (pressureless sintering, reaction-bonded, and recrystallized), Si3N4, B4C, AlON, and others. These materials can be processed in any combination of furnace atmospheres including high-vacuum, rough vacuum, partial pressure, or positive pressures of inert or Hydrogen gases. Key applications of sintering furnaces include:

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Powder Metallurgy: Sintering furnaces are extensively used in the powder metallurgy industry to produce metallic components. Metal powders are compacted into a desired shape using pressure, and then sintered in a furnace to bond the particles together and create a solid object. This process is widely used in automotive, aerospace, and manufacturing industries to produce parts such as gears, bearings, and cutting tools.

Ceramics Manufacturing: Sintering is a crucial step in the production of ceramic materials. Ceramic powders may be pressed into a specific shape and then sintered in a furnace to create dense, solid ceramic components. This sintering process is used in the manufacturing of tiles, bricks, electronic ceramics, and various industrial components.

Electronics: Sintering furnaces are used in the electronics industry for the production of electronic components such as capacitors, resistors, and semiconductor devices. Sintering is employed to bond metal or ceramic particles together and to create dense, reliable connections between components.

Advanced Materials: Sintering is used in the production of advanced materials such as composites, metal matrix composites, and ceramics matrix composites. These materials often require specific temperature profiles and controlled atmospheres during the sintering process to achieve desired properties such as strength, hardness, and thermal conductivity.

Medical Devices: Sintering furnaces are used in the manufacturing of medical devices such as dental implants, orthopedic implants, and surgical instruments. Sintering is employed to produce biocompatible materials with precise dimensions and mechanical properties suitable for medical applications.

Additive Manufacturing (3D Printing): In some additive manufacturing processes like selective laser sintering (SLS) and binder jetting, sintering furnaces are used to fuse powdered materials layer by layer to create three-dimensional objects. These processes are used in rapid prototyping, custom part manufacturing, and production of complex geometries.

Tool and Die Making: Sintering is utilized in the production of tool and die components for various manufacturing processes. Sintered tool steels and carbides offer high hardness and wear resistance, making them suitable for cutting, shaping, and forming applications in industries such as machining, stamping, and molding.

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