Against lime and corrosion

 An advanced version of the moldclean mc 1 that was further developped in close cooperation with customers was presented by gwk Gesellschaft Wärme Kältetechnik mbH, Meinerzhagen, at the Fakuma 2015. The system was designed to clean limed up cooling channels in injection moulds and heat exchanging systems. A pH-value controlled and monitored cleaning process as well as the documentation of the flow rate increase give proof of the success.

 The redesigned moldclean mc 1 is available in two versions with new optional extensions. In addition to a low-cost entry-level model a very economic solution with two containers is offered which requires less cleaning agent. This reduces the cleaning cycle by up to 50 %. The switch-over between the cleaning cycles can alternatively be made by automatic ball valves. The cleaning process can be accelerated by jet cleaning with compressed air in order to further reduce the chemical consumption.

Lime and corrosion are hidden cost factors. Inevitably, these two “enemies of temperature control channels” prolong the cooling time, reduce the process safety and have a negative influence on the parts’ quality. The problem occurs insidiously in each plastic processing company, because lime and corrosion gradually build an insulation layer in the cooling channels and are thus responsible for a deteriorating heat transfer. Often the problem is not recognized until the demanded parts’ quality cannot be achieved any longer or if the complete system breaks down.

The effect of cleaning the cooling channels of an injection mould with moldclean mc 1 is a reduction of cooling time up to 40 % (in individual cases even more), depending on the amount of deposits. While the moldclean mc 1 is applied for the cleaning of one temperature control circuit, the moldclean mc 8 is the right solution for the simultaneous cleaning of up to 8 temperature control circuits. The systems were designed in close cooperation with end users and are subject to continous further development.

 

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