Well we can’t speak for every manufacturer but ZF Wind Power in Coimbatore, India is pretty typical in that they are using large pit, gas carburizing furnaces. In this particular case Aichelin Unitherm of India is providing the company a total of 7 electrically heated pit furnaces each with an operating temperature of 850C to 970C and a load capacity of 12,000 KG. The facility is equipped with advanced automation with customized software for the entire heat treatment process and complies with CE certification standards. While “The Monty Heat Treat News” has seen facilities using large batch IQ furnaces for heat treating of gears and shafts for the windmill industry, pit carburizing furnaces remain the choice of most manufacturers.

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