SU144690A1 - Method for electroforming precision waveguide parts - Google Patents

Description

In a galvanoplastic process of manufacturing waveguides, the inner surface of the waveguide copper parts is coated with silver to protect against corrosion and reduce electrical losses.

The known galvanic method of applying a silver coating on the inner surface of the waveguides does not exclude the roughness of the coating, as a result of which the attenuation value in the waveguides does not decrease, and in some cases even increases. In addition, the electroplating of silver is extremely difficult, and sometimes impracticable.

The described method of galvanoplastic manufacturing of waveguide parts made of copper with preliminary deposition of a primary silver layer on the form (mandrel) eliminates these drawbacks and allows to obtain the inner working surface of waveguides of the accuracy and purity class that the mandrel surface has.

A distinctive feature of the described method is that the electrolytic deposition of the primary silver layer on the waveguide oopaiBKy is first carried out with the supply of current in the form of short-duration pulses of great power, and further deposition of silver is carried out under normal conditions. The proposed method allows silver to be applied to metal forms, for example, any steel, titanium, aluminum and their alloys. In order to obtain an inner silver surface, the exact waveguides of the mold (rims "i) are pre-polished before silver is deposited.

 144690

P .p e dm f t inventions

The method of galvanic-anoplastic production of exact waveguide parts made of copper with silver coating the inner surface on permanent forms with a passive film made of any steel, titanium, aluminum and their alloys, characterized in that, in order to obtain an exact silver The inner surface of the waveguides and the expansion of the choice of metals for the manufacture of molds, IB as the primary layer on the forums, silver is deposited using an impulse current.