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Non-magnetic steel for improving corrosion resistance of water-cooled jacket of submerged arc furnace

A technology of non-magnetic steel and water-cooled jacket, applied in the field of non-magnetic steel, can solve the problems of non-magnetic steel being easily corroded and cracked, and achieve the effects of outstanding corrosion resistance, good toughness, and acid corrosion resistance

Pending Publication Date: 2022-07-22
山西隆达锦康新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention overcomes the deficiencies of the prior art, and proposes a non-magnetic steel that improves the corrosion resistance of the water-cooled jacket of the submerged arc furnace, and solves the problem that the non-magnetic steel used for the water-cooled jacket of the submerged arc furnace is easily corroded under acid corrosion such as chloride ions cracking problem

Method used

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  • Non-magnetic steel for improving corrosion resistance of water-cooled jacket of submerged arc furnace
  • Non-magnetic steel for improving corrosion resistance of water-cooled jacket of submerged arc furnace
  • Non-magnetic steel for improving corrosion resistance of water-cooled jacket of submerged arc furnace

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Embodiment 1

[0032] The present embodiment provides a non-magnetic steel for improving the corrosion resistance of the water cooling jacket of a submerged arc furnace, and its chemical composition by weight percentage is: C: 0.16%, Si: 0.95%, Mn: 24.6%, P: 0.01%, S: 0.02%, A1: 2.5%, Mo: 0.4%, Ti: 0.05%, Cr: 1.1%, Ti: 0.15%, and the rest are Fe and inevitable impurities.

[0033] The preparation steps of the non-magnetic steel of the present embodiment are as follows:

[0034] Vacuum smelting: iron raw materials are first melted into molten iron in the smelting chamber of the vacuum induction melting furnace, and argon gas is introduced into the smelting chamber until the indoor pressure reaches 0.50Pa, which is close to vacuum. The molten steel enters the smelting chamber one after another, and the molten steel is stirred by argon and sent to electricity for refining for 40 minutes to obtain an ingot.

[0035] The oxide layer on the surface of the ingot is removed by a slag scraper, and t...

Embodiment 2

[0038]The present embodiment provides a non-magnetic steel for improving the corrosion resistance of the water cooling jacket of a submerged arc furnace, and its chemical composition by weight percentage is: C: 0.18%, Si: 1.15%, Mn: 23.5%, P: 0.02%, S: 0.01%, A1: 3%, Mo: 0.5%, Ti: 0.03%, Cr: 0.8%, Ti: 0.02%, and the rest are Fe and inevitable impurities.

[0039] The preparation steps of the non-magnetic steel in this example are the same as those in Example 1.

Embodiment 3

[0041] This embodiment provides a non-magnetic steel for improving the corrosion resistance of the water cooling jacket of a submerged arc furnace, and its chemical composition by weight percentage is: C: 0.17%, Si: 0.98%, Mn: 23.7%, P: 0.005%, S: 0.015%, A1: 3.6%, Mo: 0.45%, Ti: 0.04%, Cr: 1.1%, Ti: 0.07%, and the rest are Fe and inevitable impurities.

[0042] The preparation steps of the non-magnetic steel in this example are the same as those in Example 1.

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Abstract

The invention belongs to the technical field of non-magnetic steel, and relates to non-magnetic steel for improving corrosion resistance of a submerged arc furnace water-cooled jacket. The steel comprises the following chemical components in percentage by weight: 0.16%-0.18% of C, 0.95%-1.15% of Si, 23.5%-24.6% of Mn, less than or equal to 0.03% of P + S, 2.5%-3.6% of A1, 0.4%-0.5% of Mo, 0.03%-0.05% of Ti, 0.8%-1.1% of Cr, 0.02%-0.15% of Ti and the balance of Fe and inevitable impurities. In the manufacturing process of the submerged arc furnace water-cooled jacket, compared with existing non-magnetic steel and stainless steel, the non-magnetic steel has more outstanding corrosion resistance, acid corrosion of chloride ions in water is effectively resisted, and the problem that the non-magnetic steel for the submerged arc furnace water-cooled jacket is prone to being corroded and cracked under acid corrosion of the chloride ions and the like is solved.

Description

technical field [0001] The invention belongs to the technical field of non-magnetic steel, and relates to a non-magnetic steel for improving the corrosion resistance of a water cooling jacket of a submerged arc furnace. Background technique [0002] The submerged arc furnace is a high-energy-consuming smelting equipment that realizes the melting and reduction of ore through electric energy. "Low voltage, super current" releases heat energy and generates a strong alternating magnetic field. The ferromagnetic parts within 1.5m of the surrounding produce a great eddy current effect, which leads to power loss. In the prior art, non-magnetic, heat-resistant and wear-resistant non-magnetic steel materials are used to make the furnace body, feed pipe and other components of the submerged arc furnace. Non-magnetic steel is a stable austenite structure, with stable non-magnetic properties and low magnetic permeability; no phase transformation and precipitates occur at low temperatur...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/22C22C38/28C22C38/38C21C7/072C21C7/10C22C33/04C21D8/12
CPCC22C38/02C22C38/04C22C38/06C22C38/38C22C38/22C22C38/28C22C33/04C21C7/072C21C7/10C21D8/1222
Inventor 逯金明李亚玲刘忠
Owner 山西隆达锦康新材料有限公司
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