Midwest Thermal-Vac uses the patented Infracarb process from ECM, which allows low pressure Vacuum Carburizing, Carbonitriding and other case hardening applications to be done under vacuum. By taking advantage of the newest technology available today, we are able to effectively provide our customers the opportunity to utilize the latest streamlined manufacturing process improvements within our industry. This has been shown to yield increased quality in the heat treatment process and a decrease in overall production costs.
MTV uses a carbonitriding process under vacuum which reveals the full potential of this technology in terms of fatigue strength improvements. Compared to traditional carbonitriding and oil quenching, the same tests performed on parts using low-pressure carbonitriding followed by gas quenching show great improvement to tooth root fatigue and overall greater fatigue strengths.
Why Vacuum Carburizing Is in Demand. Only low pressure vacuum carburizing allows the end user to dial in settings for case depth, carbon profiles, surface/core hardness and case/core microstructure. With Low pressure carburizing it makes it very easy to predict distortion results which can then be used to achieve required properties at the lowest unit cost. Conventional materials such as 8620, 8822, 9310, and parts that are traditionally atmosphere carburized can greatly benefit from these techniques. Documented savings in post-machining operations and material stock allowances make the use of vacuum carburizing not only practical, but very financially attractive.
Automotive SectorThe Future of vacuum carburizing. Aerospace and automotive specifications need to be reviewed in light of rapid developments underway with these new materials. Serious consideration must be given to the use of elevated temperatures above 1900║F (1040║C) for carburizing and direct quenching, to minimize cycle times and reduce carbon absorption without adversely affecting microstructure. Preoxidation treatments have been found to be unnecessary, and rules for the use of high gas pressure quenching need to be better established and realized throughout the industrial sectors. Once this is accomplished, vacuum carburizing technology offers almost limitless possibilities.
Both passenger car/truck manufacturers and racing teams rely heavily on vacuum carburized components for their engine fuel system, power-train/transmission, braking, and steering components. Most of the major automotive manufacturers are working to improve performance by vacuum heat treatment. One such application is transmission components, such as those used by the racing industry. Phenomenal race results (Latest NASCAR Results) have been achieved using vacuum carburized components due to increased rear wheel horsepower with equivalent or reduced rotating mass.
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