FineCarb™ - the Smart System for Vacuum Carburizing

FineCarb is the patented control system for low-pressure vacuum carburizing as well as general vacuum applications. This new technology provides an opportunity for vacuum heat treatment applications to select a low-pressure vacuum carburizing process cycle within a single Universal HPQ™ furnace system.

Single Chamber Universal HPQ	Double Chamber Vacuum Carburizing with 20 Bar Quench	Multi Chamber Vacuum Carburizing for Semi-Continuous Production

Low-pressure vacuum carburizing is a process that is characterized by irregular and changeable conditions. This process requires a new generation of control systems with parameter selections to optimize both the carburizing/diffusive and the high pressure gas quenching stages.

This system allows quick and precise parameter selection based on computer simulations. This system uses a special algorithm that uses the latest development in material science as well chemical irregular reactions during carburizing/diffusion stage.

The FineCarb system incorporates design features based on the newest original solutions in the field of vacuum carburizing parameters selection and optimization. This system takes into account the grade of steel, carbon concentration profile, carburized layer microstructure requirements, shape of treated elements, size, homogeneity of the load and grain growth propensities at elevated temperatures.

The FineCarb control system:

• Creates the carburizing gas mixture, in compliance with the treated elements shape to obtain a homogenous carburized layer on every surface simultaneously (e.g. in the hollows and deep blind holes), clean charge surface and total elimination of the soot and tar – the by-products.
• Selects the pressure fluctuation characteristics in the carburizing phases in accordance with the chemical reactions rate in gases mixture of specified initial composition
• Controls the mass flow of carburizing atmosphere in function of charge volume and carburizing process phase  
• Limits grain growth by specific ammonia proportioning during the pre-heating stage
• Optimizes the carburizing stage, diffusion stage and pre-cooling before quenching to obtain demanded carbon concentration profile in diffusive layer according to specific steel grade and load geometry considering
• Records the executed processes parameters and actual treatment results

R1 12/26/2008, R2 12/20/2009

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