Sand Preparation

At a sand preparation station foundry sand is prepared with the help of a sand mixer. After conditioning the sand is supplied to the molding machine for further making flaskless foundry molds.

A DISA ТМ vortex mixer features high precision, unrivaled reliability and economic efficiency. Thanks to its strong structure, perfect engineering and quality of its components as well as to the latest developments in technological process control DISA TM mixers are the best in every respect. 

The TM mixer is designed for preparation of molding sands with bentonite binders. A large S-shaped twin plough (activator) and turbines (swirling heads) which are located above it ensure fast sand mixing. The sand and additives are dosed to the mixer with the help of a weighing unit. 

A weighing hopper simultaneously weighs fresh and used sands. A weighing hopper for additives which has a 160 kg capacity is located above the weighing hopper for sand. It is used for bentonite and coal dust. 

DISA Sand Multicontroller (SMC) controls and regulates mixer operation and ensures continuous properties of ready mixes. The system is based on sand control with 99 different compositions which are stored in computer memory and which can be activated immediately. 

Ready mixes are supplied to the molding machine where flaskless molds are made by way of pressing.