SU867588A1 - Method of electrochemical working of parts - Google Patents

Description

one

The invention relates to mechanical engineering technology, in particular, to electrophysical and electrochemical methods of dimensional processing, and can be used for dimensional electrochemical machining of parts made of current-conducting materials with the flow of gas into the electrolyte.

Known methods of electrochemical dimensional processing in a gas-saturated electrolyte supplied to the treatment area GI.

The disadvantages of the known methods are the need to use compressor or other devices for supplying gas under pressure to the electrolyte, special devices for mixing gas and electrolyte, and also due to the instability of the process of supplying gas to the electrolyte, gas bubbles can appear, the gap between the electrodes, the exit from stro electrode tool or parts.

The purpose of the invention is to improve the quality of electrochemical processing, increase the accuracy and stability of the process, simplify the process equipment.

The goal is achieved by the fact that the electrochemical treatment is carried out in such a way that, before the electrolyte is supplied to the treatment area, the electrolyte is passed through a solid gas, which is placed in the electrolyte flow path.

Example. The method is implemented by the electrochemical treatment of samples of stainless alloys and steels using a machine of mods TPP-3. Cylindrical holes with a diameter of 15–24 mm are pierced to a depth of 40 mm using cylindrical electrode tools made of L-62M brass with a central hole for pumping the mixture of electrolyte and gas into the interelectrode gap.

Processing parameters: technological voltage (constant) 1420 15 Bj electrolyte - 15% solution of sodium chloride in water, electrolyte pressure 5-10 kgf / cm; the value of the interelectrode gap to 0.1 mm,

25 linear tool feed speed more than 1 mm / min. Carbon dioxide in the solid state is placed in the electrolyte flow path, gas saturation is carried out at the interface in a special device.

thirty

P, as a result of the experiment, 5nts establish that the accuracy of electrochemical shaping increases to 15%, the process stability is high X1, there is a uniform distribution of gas in the electrolyte volume, there is no breakdown of the electrode gap, the roughness of the treated surface is within 6-7 classes. Along the way, it is also established that the use of the new method of electrochemical treatment also provides cooling of the working electrolyte (heated as a result of Joule heat release), which eliminates the need to use complex and expensive special devices to cool the electrolyte before feeding it into the interelectrode gap

In comparison with the known, the proposed invention provides an increase in the accuracy and stability of the process of electrochemical machining of parts, improving the quality of processing, cooling of the working electrolyte heated by Joule heat.

Claims (1)

1. Electrochemical treatment of parts in a gas-saturated electrolyte supplied to the treatment area, characterized in that, in order to improve the quality and accuracy of processing parts of complex configuration, increase the stability of the treatment process, the electrolyte is passed through in solid form before being fed to the treatment area Carbon dioxide and carbon dioxide. Sources of information taken into account in the examination 1. Technology of dimensional electrochemical metal processing. Reports and communications at the scientific and technical workshop. Tula, TsVTI, 196s, s. 10-14