Specifications and parameters:

Width: 1000~1900mm

Diameter: φ1500mm、φ2016mm、φ2700mm、 φ3000、φ3600

Production specification: 4-105μm

Static balance: <3N.M

Material of titanium ring: TA1/Gr1

Thickness of titanium ring: >10mm(-0,+0.5)

Grain size grade: ASTM≥9.5

The surface of cathode drum: no pinhole, no indentation, no scratches, no color differences, no spots, and other defects

Surface roughness of cathode drum: 0.3μm; Edge and plane of cathode drum keep right angles and acute angles.

HPVC is used for the edge side panel. There is no deformation of the side plate and the thickness of the side plate is 30mm.

Arc coaxiality of cathode drum: ±0.05

Straightness of cathode drum: ±0.05mm

Technical Point:

The cathode drum is the most critical content in the electrolytic copper foil, and the crystal structure on the surface of the cathode roll directly affects the crystalline state of the electrolytic copper foil. In this process, if the titanium layer of the cathode drum has high surface roughness and grain size, the grain size of the copper foil is correspondingly fine and has good ultra-thin toughness and other characteristics.

Production and processing method：

The manufacturing process of the titanium roll on the surface of the cathode drum is mainly welding, spinning and other methods. The new “ring rolling” technology combining forging and rolling can effectively meet the requirements of morphology and mechanical properties at the microstructure level, effectively improve the production quality of titanium roll, and contribute to the enhancement of the overall quality of the deposited copper foil. It can effectively guarantee the fineness and refinement of the microstructure on the surface of the titanium roll, and can meet the uniform grain size. Through the analysis and comparison of relevant research materials, this technology is the key content of the direct production of titanium roll, which can help to provide effective ideas for the future application of larger-scale “large-diameter, thin-walled, high-cylinder” spinning titanium roll , which is conducive to the rapid development of industrial production of cathode drum.