A device for plating chromium on the inner and outer surfaces of a deep hole part

CN224930677UActive Publication Date: 2026-11-03JIANGNAN IND GRP CO LTD
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Patent Information

Application Number
CN202522352501.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-06
Publication Date
2026-11-03
Estimated Expiration
2035-11-06

AI Technical Summary

Technical Problem

During the chromium plating process of deep-hole components, a film layer cannot be formed in the low-current area, which affects the quality and performance of the film layer. In addition, the current efficiency of the existing technology is low, and the current is difficult to be evenly distributed.

Method used

An auxiliary anode is designed to be located in the middle of the inner cavity of the deep hole part and is not in contact with it. Combined with an insulating support and an insulating sleeve, it ensures uniform current density distribution. The modular design of the tooling frame can be adapted to deep hole parts of different specifications, and the current and voltage of the plating tank can be monitored in real time.

Benefits of technology

This achieves uniform current density distribution and uniform chromium layer thickness on the inner surface of deep-hole components, improving chromium plating efficiency and quality, and ensuring the electrical safety and structural stability of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of about deep hole piece inner and outer surface chrome plating device, comprising: conducting plate, upper portion is provided with conducting hook;Auxiliary anode, one end is connected with conducting plate;Insulating support, set up on auxiliary anode, two insulating supports form installation site between, for installing deep hole piece, make auxiliary anode be in deep hole piece inner cavity intermediate position and not contact with deep hole piece.It also includes tool holder, the tool holder includes bottom plate and screw rod, the screw rod is installed on bottom plate by bolt, screw rod upper portion is installed on conducting plate by bolt.The insulating sleeve is arranged between the conducting plate and screw rod.The clamping arm is arranged on the screw rod, the limiting member is arranged on the screw rod, for limiting the movement of clamping arm.The bakelite board is arranged between the clamping arm and insulating support.The top head is arranged on one end of the clamping arm, and the top head is threadedly connected with the clamping arm.The problem that deep hole piece low current area cannot be coated is solved.
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