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A high conductivity prebaked anode steel claw

A prebaked anode and high conductivity technology, which is applied in the field of aluminum electrolytic prebaked anode steel claws, can solve the problems of reducing the anode voltage drop steel claw corrosion resistance, welding deformation can not be effectively controlled, and the electrical conductivity of steel claws cannot be improved. , to achieve good mechanical properties, low content of alloying elements, and improve welding efficiency

Active Publication Date: 2018-06-19
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent number: 201310336907.0, an aluminum electrolytic anode steel claw, adopts conventional arc welding, brazing and other welding techniques to obtain a full-section welded steel claw, but it has the following disadvantages: (1) full-section welding requires inert gas It is carried out in a protective environment or a vacuum environment. The welding process is poor and there is more spatter when using inert gas protection, and the welding cost is greatly increased by using a vacuum environment; (2) The connection between the steel claw and the beam needs to be chamfered and steel claw treated The area needs to be polished after welding, and the manufacturing process becomes very complicated; (3) the narrow gap I groove is not used, the weld size increases, and the welding deformation cannot be effectively controlled, which affects the service life of the steel claw; (4) the high Pure, highly conductive steel has limited effect on reducing the anode voltage drop and enhancing the corrosion resistance of steel claws
Patent No.: 201020101589.1, a steel claw for aluminum electrolysis pre-anode. Although the service life of the steel claw is prolonged through structural design, it cannot improve the electrical conductivity of the steel claw

Method used

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  • A high conductivity prebaked anode steel claw
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  • A high conductivity prebaked anode steel claw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of high-conductivity anode steel claw, its manufacturing plan is: (1) adopt the cold-rolled non-oriented electrical steel such as DT4 or DT4A or DT4E or DT4C processed and formed as the material of beam 1 and claw head 2, wherein claw head 2 is long 220mm, a cylinder with a diameter of 170-190mm; (2) using a molten electrode mixture gas (80% Ar+20% CO 2 ) Protected welding: Weld the claw head 2 equidistantly on the beam 1; (3) Adopt a narrow gap I-type groove, the groove width is about 12-16mm, single-layer single-pass, multi-layer surfacing arc welding technology.

Embodiment 2

[0026] A kind of high-conductivity anode steel claw, and its manufacture scheme is: (1) adopt the YT01 charge pure iron of processing molding as crossbeam 1 and claw head 2 materials, wherein claw head 2 is long 220mm, the cylinder of diameter 170-190mm; (2) Using molten electrode mixture gas (80% Ar+20% CO 2 ) Protected welding: Weld the claw heads 2 equidistantly on the beam 1; (3) Adopt a narrow gap I-shaped groove with a groove width of 12-16mm, single-layer single-pass, multi-layer surfacing arc welding technology.

[0027] The following is a comparative test of the pressure drop test using the anode steel claw of Example 1 of the present invention and the traditional cast steel claw. Since the current passing through each group of anodes may be different, the actual voltage drop needs to be weighted and corrected according to the passing anode current data to ensure that the voltage drop data is comparable. We selected two groups of electrolyzers for the test, punched h...

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Abstract

The invention relates to an aluminum electrolysis prebaked anode steel claw and belongs to the technical field of electrolytic aluminum industry, and particularly provides a novel high-conductivity prebaked anode steel claw which is good in conductivity, low in cost, small in deformation and long in service life. The novel high-conductivity prebaked anode steel claw comprises a cross beam, a claw head and a welding line. The material of the cross beam or the claw head is low-carbon low-silicon non-oriented electrical steel or other high-conductivity steel, and the cross beam and a steel claw are connected by consumable electrode mixed gas arc welding. According to the invention, through optimal selection of the cross beam and the claw head and selection of a proper welding process, anode drop is remarkably reduced, the electrical conductivity and the flexural behavior of the steel claw are improved, and the life of the anode steel claw is effectively prolonged, and therefore, economic benefit is improved.

Description

technical field [0001] The invention relates to an aluminum electrolytic prebaked anode steel claw, which belongs to the technical field of the electrolytic aluminum industry. Background technique [0002] The prebaked anode steel claw is one of the important components of the aluminum electrolytic cell. It mainly connects the aluminum guide rod and the prebaked anode carbon block, and plays the dual role of conduction and load bearing. The early anode steel claws are generally formed by integral casting of ZG230-450. Due to the high carbon content and alloy element types and contents of ordinary cast steel, the resistivity is relatively large, which increases the pressure drop of the steel claws, and this The impact toughness of the material is low and the rigidity is not enough, which causes the steel claw to deform greatly after being used at high temperature for a period of time, making it unusable. In addition, because the steel claws are formed by casting, the cost is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/12
CPCC25C3/12
Inventor 张国栋张楚张富巨张瑞王宇飞李志勇
Owner WUHAN UNIV
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