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Material for aluminum electrolysis crust-breaking hammer

The technology of shell hammer and aluminum electrolysis is applied in the field of materials for aluminum electrolysis shell hammer, which can solve the problems of poor wear resistance, short life and low steel hardness.

Inactive Publication Date: 2011-04-20
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the materials used for shelling hammers are forged Q235, cast ZG235-270 steel or other ordinary carbon steels. The steels of these materials have low hardness, low melting point, and poor wear resistance, so the service life is short. Every 3-4 pieces needs to be replaced every month

Method used

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Examples

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Effect test

Embodiment 1

[0010] The material used for the shelling hammer is 1.7% carbon, 5.2% manganese, 0.8% silicon, less than 0.05% phosphorus, less than 0.05% sulfur, 6.3% chromium, less than 0.05% Ni, and the rest is iron. The lost foam casting process is adopted, and the shelling hammer is formed by casting.

Embodiment 2

[0012] The material used for the shelling hammer is 2.5% carbon, 7.5% manganese, 0.5% silicon, less than 0.05% phosphorus, less than 0.05% sulfur, 19.1% chromium, less than 0.05% Ni, and the rest is iron. The sand forming casting process is adopted, and the shelling hammer head is formed by casting.

Embodiment 3

[0014] The material selected for the shelling hammer is 2.0% carbon, 5.9% manganese, 0.9% silicon, less than 0.05% phosphorus, less than 0.05% sulfur, 10.0% chromium, less than 0.05% Ni, and the rest is iron. The lost foam casting process is adopted, and the shelling hammer is formed by casting.

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PUM

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Abstract

The invention relates to a material for an aluminum electrolysis crust-breaking hammer, which is characterized by comprising the following components in percentage by weight: 0.5%-3.0% of carbon, 3.5%-10.0% of manganese, 0.5%-1.0% of silicon, less than 0.05% of phosphorus, less than 0.05% of sulphur, 5.0%-20.0% of chromium, less than 0.05% of Ni and the balance of ferrum. The material for the aluminum electrolysis crust-breaking hammer is an iron alloy material and is prepared by using a lost foam casting or sand casting process. In the invention, The manganese content in the material for the crust-breaking hammer is increased and the chromium content is optimized, thereby the material effectively improves the strength and wear resistance of the aluminum electrolysis crust-breaking hammer, prolongs the service life of the hammer, extends the replacement period, reduces the production cost and effectively relieves the labor intensity.

Description

technical field [0001] The invention relates to a material for an aluminum electrolytic shelling hammer head. Background technique [0002] The aluminum electrolytic cell is the main equipment for aluminum smelting, and it has lasted for more than one hundred years since the cryolite-alumina molten salt electrolysis method was invented. The production technology of aluminum electrolysis has also made great progress, from the initial small test cell to the current computer control-automatic intermediate point feeding large prebaked aluminum electrolytic cell. The middle point feeding is to control the striking hammer head through the computer control solenoid valve, so as to break the hard crust on the surface of the electrolyte, commonly known as "crust", and form a hole, which is commonly known as "fire eye", and the "fire eye" is used as the feeding point of alumina and the anode gas discharge channel must be kept unobstructed at all times. To keep the "fire eye" unblock...

Claims

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Application Information

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IPC IPC(8): C22C38/38C25C3/14
Inventor 秦庆东邱仕麟罗丽芬
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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