Electroforming composite processing apparatus and electroforming tank used by the apparatus

Abstract

The invention relates to an electroforming combined processing device and an electroforming groove used in the device. The device comprises an electroforming mandrel supporting device and the electroforming groove, wherein, an energy transducer device is arranged on the electroforming mandrel supporting device or / and inside the electroforming groove, and an energy transducer of the energy transducer device is in electric connection with an ultrasonic generator. A multi-frequency ultrasound irradiating system consisting of cathode ultrasound and groove type ultrasound is acted on the electroforming process in a way of alternating coupling, and more cavitation cases are generated by the ultrasound vibration of the cathode mandrel and the ultrasound vibration of an electrolysis bath to obtain intensified ultrasound cavitation effect, thereby intensifying the conflict and perturbation on the electroforming mandrel surface, effectively removing bubbles on the electrode surface, ensuring that the current passes through the electrode smoothly, increasing the moving speed of positive ions to the cathode, reducing the concentration polarization in order to increase the electroforming speed, thinning crystal grains of the metal electrocrystallization, and obtaining an electroforming product with even surface and even and compact tissue.

Description

technical field [0001] The invention relates to an electroforming composite processing device and an electroforming tank for the device, belonging to the field of electroforming processing, and relates to an electroforming composite processing device that applies multi-frequency ultrasonic coupling to the electroforming process to improve the quality of electroforming products. Background technique [0002] Electroforming is a special processing method that uses the principle of electrodeposition of metal ions on the surface of the cathode to accurately replicate certain complex or special-shaped workpieces. Electroforming has a wide range of application prospects in industrial fields such as aviation, aerospace, weapons, precision instruments and meters, and biomedical equipment due to its high replication accuracy and repeatability. However, there are also some defects and limitations in electroforming, mainly in: (1) Due to the edge effect of the current, the power lines ...

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Problems solved by technology

However, there are also some defects and limitations in electroforming, mainly in: (1) Due to the edge effect of the current, the power lines are easy to concentrate at the sharp corners and edges of the mandrel, and the shielding effect of the side wall of the groove on the bottom of the groove , resulting in relatively sparse power lines at the bottom of the tank, resulting in poor uniformity of the electroforming layer and low tissue density; (2) During the deposition of metal ions, hydrogen and other gases precipitated from the surface of the cathode will stay on the surface of the cathode and cause hydrogen embrittlement, resulting in Defects such as pitting and nodules appear on the surface of the casting layer, which reduces the deposition rate of the metal; (3) Due to the low current density applicable to electroforming, the deposition rate of the metal is slow, resulting in a long processing cycle, etc.

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