INSTITUTE OF PULSE PROCESSES AND TECHNOLOGIES
NATIONAL ACADEMY OF SCIENCES OF UKRAINE

Electrohydraulic castings refinement from cores and remains
of a sand blend

- What realizes

Сore and remains of sand blends knockout out of thin- и thick-walled steel, cast-iron, aluminium, titanic and other castings weighing from dozens grams to hundreds tons (including precision molding) irrespective of their complexity in conditions of job-work, serial, mass serial production and repetition work.

- Technology essence

The technology is based on the use of high-voltage discharge, which arises between a special electrode and a moulding in the liquid. As a result, pressure waves of high intensity and hydroflows influencing upon the moulding body and core sand mixture and causing demolition and removal of the last develop and spread in the liquid.

+ Advantages

• productivity jump in 2-4 times (up to 18 t/h);
• cost and power intensity saving at providing with high-quality sores removing even from the most compound castings;
• fundamental improvement of conditions of work and ecological situation at the chipping area;
• hard manual labour mechanization;
• exclusion of conditions promoting the rise of occupational diseases (Raynaud's phenomenon, silicosis etc.).

+ Efficiency

• removal of core sand mixtures and sand blends of practically any strength;
• exclusion of the operation of castings aftertreatment;
• decrease of residual stresses in castings without thermal treatment;
• castings dimensions stabilization;
• decrease of occupied production spaces in 2...2,5 times.

+ Manufacturing application

At the enterprises of Ukraine and Russia, and also exported to Japan, Germany, Sweden, Spain, Hungary, Roumania, India, Bulgaria, Slovakia, and Cuba.

Phone: (0512) 58-71-21