一种金属材料表面复合镀覆处理装置

Abstract

本实用新型公开了一种金属材料表面复合镀覆处理装置，属于金属镀覆技术领域，包括镀槽单元、工件自转装夹单元、镀液循环单元及阳极单元。工件自转装夹单元采用绝缘定心夹持夹具，通过锥面驱动多组绝缘夹持块沿径向同步伸缩，实现紫铜电极棒纯机械绝缘夹持与高精度同轴定位；阳极单元采用与工件同轴布置的环形阳极，使阴阳极间距均匀、电场周向一致；镀液循环单元设有环形喷液管，出液口呈倾斜设置，可有效剥离氢气泡并强化复合颗粒分散。本实用新型采用上述的一种金属材料表面复合镀覆处理装置，通过同轴定心、均匀电场与定向旋流协同作用，显著提高镀层均匀性与致密度，消除针孔及电场集中缺陷。

Claims

1. A composite plating treatment device for metal material surfaces, characterized in that, It includes a plating tank unit, a workpiece self-rotation clamping unit, a plating solution circulation unit, and an anode unit. The plating tank unit includes a main plating tank with an open top. The workpiece rotation clamping unit includes a clamping spindle vertically positioned above the main plating tank, and an insulated centering clamping fixture fixed to the lower end of the clamping spindle. The anode unit includes an annular anode coaxially arranged with the clamping main shaft. The annular anode is fixed in the main plating tank and coaxially sleeved on the outer periphery of the copper electrode rod immersed in the composite plating solution. The distance between the inner wall of the annular anode and the outer wall of the copper electrode rod is uniform. The plating solution circulation unit includes a circulation pump, a main inlet pipe, and at least one set of annular spray pipes. The inlet end of the circulation pump is connected to the bottom of the main plating tank, and the outlet end of the circulation pump is connected to the main inlet pipe. The annular spray pipe is coaxially arranged with the clamping main shaft and fixed between the inner wall of the annular anode and the outer wall of the copper electrode rod. The inlet of the annular spray pipe is connected to the main inlet pipe. Multiple outlets are evenly arranged circumferentially on the pipe wall of the annular spray pipe. The central axis of each outlet forms an inward inclination angle of 5°-20° with the radial section of the copper electrode rod.

2. The apparatus for surface composite plating of a metal material according to claim 1, wherein The insulating centering clamping fixture includes an insulating clamping seat coaxially fixed to the lower end of the clamping spindle, multiple sets of insulating clamping blocks evenly arranged along the circumference of the insulating clamping seat, a center adjusting screw, a conical driving pressure plate, and a reset elastic element. The insulating clamp is a circular insulating body coaxially fixed to the lower end of the clamping spindle. A central through hole is coaxially opened in the insulating clamp. The central adjusting screw is coaxially inserted in the central through hole, with the upper end of the central adjusting screw extending out of the top of the clamping spindle and the lower end extending out of the lower end face of the insulating clamp. The conical driving pressure plate is coaxially fixed to the lower end of the central adjusting screw, and the outer conical surface of the conical driving pressure plate is an inverted conical structure with a diameter that gradually decreases from top to bottom; The lower end face of the insulating clamp has multiple sets of radial guide grooves that correspond one-to-one with the insulating clamping blocks. Each set of radial guide grooves is evenly arranged along the circumference of the insulating clamp. All radial guide grooves extend in a straight radial direction along the insulating clamp and are perpendicular to the central axis of the insulating clamp. Each set of radial guide grooves is a T-shaped through groove with the opening facing downward. Each set of insulating clamping blocks has a T-shaped slider integrally formed on its upper end face that perfectly matches the T-shaped through groove, and the T-shaped slider is correspondingly embedded in the radial guide groove; The upper end face of the insulating clamping block is provided with a driving inclined surface that is completely in contact with the outer conical surface of the conical driving pressure plate. The driving inclined surface gradually slopes upward from the outside to the inside of the insulating clamping block. The reset elastic element is provided between the insulating clamping block and the insulating clamping seat.

3. The apparatus for surface composite plating of a metal material according to claim 2, wherein The reset elastic element is a reset tension spring. The lower end face of the insulating clamp is provided with a spring fixing seat on the outside of each set of radial guide grooves. One end of the reset tension spring is fixed to the spring fixing seat, and the other end is fixed to the outer wall of the insulating clamping block. The extension and contraction direction of the reset tension spring is parallel to the sliding direction of the insulating clamping block. There are 3 sets of insulating clamping blocks and radial guide grooves. The upper end of the central adjusting screw is engaged with a locking adjusting nut. The locking adjusting nut abuts against the top end face of the clamping spindle.

4. The apparatus for surface composite plating of a metal material according to claim 1, wherein The workpiece self-rotation clamping unit also includes a lifting mounting frame and a self-rotation drive assembly. The clamping spindle is rotatably mounted on the lifting mounting frame via bearings. The self-rotation drive assembly includes a handwheel and a meshing driving bevel gear and a driven bevel gear. The driven bevel gear is coaxially fixed to the upper end of the clamping spindle, and the driving bevel gear is coaxially fixed to the handwheel.

5. The apparatus for surface composite plating of a metal material according to claim 1, wherein The distance between the inner wall of the annular anode and the outer wall of the copper electrode rod is 30mm-80mm, and the axial length of the annular anode is greater than or equal to the axial length of the area to be plated on the copper electrode rod.

6. The composite plating treatment device for metal material surface according to claim 1, characterized in that, The annular spray pipes are provided in 2-5 groups, with each group of annular spray pipes arranged at equal intervals along the vertical direction, and the inclination angle and discharge direction of the outlet of all annular spray pipes are consistent; the outlet diameter of each annular spray pipe is 1mm-3mm.

Images