Rotating cathode roll roller for electrolysis

Abstract

The invention relates to a rotating cathode roll roller for electrolysis, which comprises an inner roller and an outer roller, wherein the inner roller is made of aluminum alloy, and mesh-shaped conducting plates are distributed on the inner surface of the inner roller; the wall thickness of the inner roller 2 is 12mm or 15mm; each conducting plate has the thickness a of 15mm or 20mm and the height c of 160mm or 200mm; each conducting plate comprises 6 annular conducting plates and 36 strip conducting plates; and an axial interval b of the annular conducting plates is 200mm, and the strip conducting plates are uniformly distributed at the inner roller in the circumferential direction. By the technical scheme of the invention, the conducting section area of the mesh-shaped conducting plates is larger than the axial conducting section area of the wall of the inner roller, and the resistance of the conducting plates is smaller than the axial resistance of the roller wall; the temperatureuniformity of the inner roller and positive pressure uniformity between the inner roller and the outer roller are realized, no inner roller overheating under large electric quantity is realized for inhibiting the generation of hotspots, and the contact positive stress, integral rigidity and heat radiating performance of the rotating cathode roll roller for electrolysis are improved, thereby improving the quality level of finished foils.

Description

technical field [0001] The invention relates to a metal foil manufacturing device, in particular to a rotating cathode roller. Background technique [0002] The amount of metal foil, especially copper foil, is increasing year by year. In the manufacture of metal foil, the rotating cathode roller for electrolysis is a key component of electrolysis foil production equipment. [0003] Such as figure 1 As shown, when electrolysis uses a rotating cathode roll to produce metal foil, the current flows from the outer cylinder to the inner cylinder in the form of contact conduction. The rotating cathode roll for electrolysis in the prior art is formed by shrink-fitting an outer cylinder and an inner cylinder. The material of the outer cylinder is mostly titanium, and the material of the inner cylinder mainly includes carbon steel and carbon steel-copper composite materials. In order to improve the rigidity of the inner cylinder, 2 to 4 annular ribs are generally installed inside. ...

AI Technical Summary

Problems solved by technology

When filling the low-melting point metal, if the low-melting-point metal is melted in advance and then filled on the inner cylinder for smooth processing and then hot-packed, because the ambient temperature exceeds the melting point of the low-melting-point metal during hot-packing, the low-melting-point metal in some areas will flow after melting. Go, resulting in insufficient filling in some areas; if the molten low-melting point metal is filled after hot charging, due to the small gap between the inner and outer cylinders, the metal flow is not smooth, and it cannot be guaranteed that all parts are fully and effectively filled

In the part that has not been fully filled, there is a gap between the inner cylinder and the outer cylinder, which cannot achieve the purpose of normal and uniform conduction, and cannot effectively suppress the generation of hot spots

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