Pusher Furnace

Pusher Furnace

Being recognized as a technology leader and innovator within the manufacture of pusher carburizing systems is truly a privilege and an honor. With recognition comes the responsibility and the implicit mandate to tirelessly push the envelope towards improving performance, efficiency, operating costs and environmental impact. Known throughout the world as a preferred manufacturer of Pusher furnaces, Aichelin offers the heat treatment community a multitude of technology solutions and sound investment options to meet all requirements ranging from 1 to 4 row Pusher systems.

Customer satisfaction is more then a simple adage to Aichelin. Customer satisfaction means repeat business opportunities and long term relationships. It«s no secret that when customers buy Pusher Furnaces from Aichelin, odds are that they«ll buy their next Pusher system from Aichelin. From reducing fugitive emissions to improving zone control, look first to Aichelin for the next technology advancement in Pusher System Design.

Applications Include:
Larger sized Heat Treat applications, greater (more cost effective) throughput.
Typically 100 Kg/Hr (220 lb./Hr) or more with a case depth of 0.6 – 0.8 mm.
Need for good process reproducibility.
Need for ease in automation.
Requiring higher degree of flexibility in Heat Treat Processes.

Processes Include:
Gas Carburizing (with subsequent direct hardening or with subsequent transformation into the pearlite range and hardening)
Carbonitriding
Nitrocarburizing

AHTS Feature / Benefits:
Underside inlet lock feeding option provides for significant savings and cost optimization as it relates to process gas losses, surface oxidation contamination, fugitive CO emissions and heat losses.
Elimination of intermediary doors assures continues operations, even heating and minimizes the likelihood for material distortion.
Furnace design allows for pinpoint temperature and Carbon level control within each stage of the furnace.
The installation of a ceramic muffle system within the carburizing and diffusion zones further improves the distribution of the gas and temperature uniformity.
“Immersion Through” quenching technique prevents the possibility of oxygen attack on the charge.
Tilted tray material handling systems following the quench stage assure that excess quench material is returned to the holding tank.
Multiple track system allows for multiple processing recipes and carburization levels simultaneously.
Available in “High Pressure Gas Quench” system alternative to oil quench.
Minimizes deformation and tolerance issues.
Idle Tray storage assures continues operation.

Safety / Automation Benefits:
Low Temperature shut-off. No explosive gasses conveyed to system at temperatures less than 750°C / 1382°F. Automatic Nitrogen Purging unit (in the event of a disturbance in process/enrichment gas)
When necessary, flame curtain at entry/exit locks. Assures no Oxygen penetration into the furnace. External cooling for oil media.
Air to oil heat exchanger preferred, however water to oil is also available.

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