Our technology
ELECTRO-SPARK POCESSING
The installations for electro-spark processing may be used for:
· increasing the resistance of cutting tools, dies, molds parts, wood, mud and stone processing tools;
· reconditioning of the size of worn parts in the manual mode (up to 0.5 mm in diameter and 0.25 mm on the surface, locally - up to 2-3 mm.)
· reconditioning of worn parts to their size in the mechanized mode (up to 3.0 mm in diameter);
· application of protective, anti-friction (based on copper), conductive (based on noble metals) coatings;
· broaching of the holes of various configurations, stamping, forming complex reliefs and restoration of parts of the acquired material removal.
To implement the above described processes company "SCINTI" produces a range of installations using new principles of electro-sparking process that permit to apply high quality coatings for high performance.
NEW GENERATION EQUIPMENT
The generators of most of the manufactured installations for electroerosive deposition (for example, "ELITRON" of the Pilot Plant of the Academy of Sciences of Moldova, ”VESTRON” of the Russian company ”VESTRON”, “MicroDepo” of TechnoCoat International Co., Ltd., etc.) are usually based on an uncontrolled discharge of a capacitor bank into the interelectrode gap. With such a scheme for organizing the electroerosive process, the state of the interelectrode gap at the moment of discharge has a decisive effect on most of the energy and temperature parameters, such as the discharge pulse current, its duration, shape, frequency of spark discharges, and the temperature of the electrode and parts in the area of the interelectrode gap. With such an influence, it is difficult to achieve stable, repetitive processing results, which negatively affects the quality of the coating, the possibility of programming the parameters of the applied coatings, and a decrease in the dependence of the quality of the coating on the experience of the operator. In addition, most of the energy generated by the generator is lost on heating the part, in power cables, electronic devices, reducing the efficiency, or, even worse, excessively discharging in the gap, overheating the coating.
In this sense, installations of the new generation "ALIER" manufactured by NPK "SCINTI" can be classified as "intelligent" installations. Application of the principles of monitoring the state of the interelectrode gap, controllability and stabilization of the parameters of the energy introduced into the electrode gap, modern power element base and microcontrollers made it possible to form the basis of the ALIER installations a controlled discharge system, which, by analyzing the state of the interelectrode gap and adjusting the parameters of energy input into the gap, maintains stable preset application parameters, optimal temperature conditions in the application zone and increases the efficiency of the process.
This allows you to improve the continuity, uniformity of the coating, reduce roughness and porosity.
In turn, such an improvement in the structure of the coating makes it possible to obtain thicker coatings, to expand the range of metals, alloys, both processed products and electrodes used for processing.
Stabilization of application parameters allows obtaining coatings with programmable, stable, repeatable parameters, and reduces the influence of the operator's hand on the quality of the coating.
Along with this, reducing the excessive dissipated power in the cables and the processed product increased the efficiency of the installations, reduced the load of power electronic devices, thereby increasing reliability, and made it possible to reduce the weight and dimensions.
In turn, the increase in efficiency made it possible to obtain energetically more powerful modes, which makes it possible to obtain coatings of greater thickness and increase the productivity of the process.
The use of the "ENERGY COEFFICIENT" energy input into the interelectrode gap in the regulator's installations allows to set its optimal value for each energy regime at different cross-sections of electrodes, different materials of electrodes.
Under any operating modes of the generator, the peak value of the voltage at the electrode does not exceed 50V, which meets the relevant safety requirements for such equipment.
The increased frequency of vibration of the hand tool electrode (600 Hz) improves the conditions for deposition in the interelectrode gap, ensuring the quality of the coating. At the same time, it reduces the effect of vibration amplitude on the operator's hand.
Ergonomics and industrial design give the ALIER units good consumer properties.