Quenching baths and their cooling in terms of reducing operating costs and CO2 in the heat treatment – POSTER

Půlpytel Jan - VESKOM spol. s.r.o. (Czech Republic)

Modern quenching tanks are designed to provide the user with a suitable tool for optimizing its operation in relation to the load design, mechanical properties of the parts after quenching and operating costs. The key features are then proper temperature regulation, quenching media flow and cooling technology (also heating if required). Other key properties are related to the selected quenching medium, and the overall concept of the quenching system is therefore a complex task.
To propose a proper design of the quenching system it is therefore always advantageous to prepare a study. E.g. the cooling technology itself is developing and very often systems switch from cooling towers to atmospheric cooling. To avoid mixing of quenching medium and cooling liquid, it is important to design a separating plate demountable heat exchanger. Its size and power correspond to the cooling needs of the heat treatment of the given charge. To limit the clogging of plate heat exchangers with a cooling channels from 3 up to 5 mm, we suggest scale separators and magnetic filters, which reduces the need to disassemble and clean the exchangers. In most cases, the cooling system engine room represents the circulation pumps of the quenching medium and MaR for controlling the entire cooling cycle with regard to the temperature of the medium, the speed of quenching media flow in the quenching tank, the handling of the load or safety measures in the oil quenching bath.

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