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Titaniferous crust breaking hammerhead material with both high wear-resistance and corrosion resistant property

A technology of corrosion resistance and shelling hammer head, which is applied in the field of shelling hammer head materials, can solve the problems of poor impact toughness and strength, poor electrochemical corrosion resistance, and inability to adapt to high temperature oxidation environment, so as to reduce the number of replacements, The effect of reducing labor intensity and increasing life expectancy

Inactive Publication Date: 2018-12-07
JIUQUAN IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a shelling hammer head material containing titanium with high wear resistance and corrosion resistance, which solves the problem that the current shelling hammer material has poor electrochemical corrosion resistance, cannot adapt to high temperature oxidation environment, and has poor impact toughness and strength The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A shelling hammer head material containing titanium with high wear resistance and corrosion resistance. The material of the hammer head is calculated by weight percentage, and its composition is: C 0.21%, Cr 23%, Ni 8.2%, Mn 1.5%, Ti 0.64 %, Mo 2.1%, Si 1.0%, B 0.003%, P0.04%, S 0.008%, the balance is Fe, and the matrix structure of the material is Cr-Ni type austenite with high temperature resistance and electrochemical corrosion resistance. body stainless steel structure

[0021] The production process of shelling hammer head includes: pouring steel ingot → forging + austenitizing heat treatment → machining forming, the preparation and production process of shelling hammer head can also be produced by hot rolling, the process principle is the same, this implementation For example, due to the small batch, the first production method is used for production.

[0022] The 6 pieces of hammerheads in this example were used for installation and trial use in No. 2324 electro...

Embodiment 2

[0024] A shelling hammer head material containing titanium with high wear resistance and corrosion resistance. The material of the hammer head is calculated by weight percentage, and its composition is: C 0.16%, Cr 22%, Ni 8.0%, Mn 1%, Ti 0.5 %, Si 0.7%, B 0.001%, Mo1.8, P 0.03%, S0.007%, the balance is Fe, the matrix structure of the material is Cr-Ni type austenite with high temperature resistance and electrochemical corrosion resistance Body stainless steel organization.

[0025] The production process of shelling hammer head includes: pouring steel ingot→forging+austenitizing heat treatment→machining. The production process can also be produced by hot rolling. This embodiment also belongs to the experimental small batch, and adopts the first production method.

[0026] The 6 pieces of hammerheads in this example were used for installation and trial use in No. 2328 electrolytic cell (a total of 6 sets of shelling parts, 500KA) of Jiugang Dongxing Aluminum Industry Phase I....

Embodiment 3

[0028] A shelling hammer head material containing titanium with high wear resistance and corrosion resistance. The material of the hammer head is calculated by weight percentage, and its composition is: C 0.25%, Cr 24%, Ni 10%, Mn 2%, Ti 0.8 %, Si 1.2%, B 0.004%, Mo2.2, P 0.05%, S0.01%, the balance is Fe, and the matrix structure of the material is Cr-Ni type austenite with high temperature resistance and electrochemical corrosion resistance. Body stainless steel organization.

[0029] The production process of shelling hammer head includes: pouring steel ingot→forging+austenitizing heat treatment→machining. This embodiment also belongs to the experimental small batch.

[0030] The 6 pieces of hammerheads in this example were used for the installation and trial use of No. 2337 electrolytic cell (a total of 6 sets of shelling parts, 500KA) in the first phase of JISCO Dongxing Aluminum Industry. The test installation was carried out in July 2015, and the tank was started for pr...

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Abstract

The invention discloses a titaniferous crust breaking hammerhead material with both high wear-resistance and a corrosion resistant property. The titaniferous crust breaking hammerhead material with both high wear-resistance and the corrosion resistant property comprises, by weight, 0.16-0.25% of carbon, 22-24% of chromium, 8.0-10% of nickel, 1-2% of manganese, 0.5-0.8% of titanium, 0.7-1.2% of silicon, 0.001-0.004% of boron, 1.8-2.2 % of molybdenum, less than or equal to 0.05% of phosphorus, less than or equal to 0.01% of sulphur and the balance iron element. The titaniferous crust breaking hammerhead material is provided with comprehensive material properties with high wear-resistance, electrochemical corrosion resistance and high temperature and oxidation resistance characteristics integrated into one; the service life of a crust breaking hammerhead produced with the material reaches more than 12 months; compared with the service life, which ranges from 2 months to 9 months, of a hammerhead of the same kind, the service life of the hammerhead produced with the material is improved by 1.3 to 6 times; on-site replacement times of workers is reduced correspondingly; and labor intensity of on-site staff is lowered.

Description

technical field [0001] The invention relates to the technical field of materials used for aluminum electrolytic shelling hammers, in particular to a shelling hammer material containing titanium, high wear resistance and corrosion resistance. Background technique [0002] At present, the central point-type blanking and pre-baking aluminum electrolytic cell is the main equipment for aluminum electrolysis production. One of the important structures of the central point-type blanking and pre-baking cell is the shelling and blanking system, which is the working part of the shelling and blanking system— Shelling hammer head, in actual working conditions, works frequently for a long time in the environment of strong magnetic field, high temperature, strong current, and highly corrosive medium. The average time interval of shelling action is 68 seconds. When shelling, it impacts and rubs against the electrolyte shell surface. It needs to be immersed in the electrolyte up to 930°C (±...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/04C22C38/50C22C38/02C22C38/54C22C38/44C25C3/14
Inventor 刘国平何成善
Owner JIUQUAN IRON & STEEL GRP
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