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Low-density corrosion-resistant steel and preparation method and application thereof

A corrosion-resistant steel, low-density technology, used in transportation and packaging, hull decks, ship construction, etc., can solve the problems of difficult to achieve corrosion resistance of stainless steel and harsh service environment of stainless steel

Active Publication Date: 2020-06-12
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of industry, the application of stainless steel is more extensive, especially with the large-scale and professional development of ships, the ship industry has put forward higher requirements for the strength of stainless steel. Stainless steel is facing great challenges due to increasingly harsh conditions. It is difficult for traditional stainless steel to meet the current standards in engineering applications in terms of corrosion resistance.

Method used

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  • Low-density corrosion-resistant steel and preparation method and application thereof
  • Low-density corrosion-resistant steel and preparation method and application thereof
  • Low-density corrosion-resistant steel and preparation method and application thereof

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preparation example Construction

[0036] The present invention also provides a method for preparing low-density corrosion-resistant steel described in the above technical solution, comprising the following steps:

[0037] 1) Smelting the raw material of low-density corrosion-resistant steel to obtain alloy ingots

[0038] 2) hot forging the alloy ingot to obtain alloy forging material;

[0039] 3) subjecting the alloy forging to water-toughening treatment to obtain a water-tough alloy forging;

[0040] 4) performing hot rolling treatment and solid solution treatment on the water-tough alloy forging material in turn to obtain an alloy slab;

[0041] 5) cold-rolling the alloy slab to obtain a cold-rolled alloy slab;

[0042] 6) Perform aging treatment on the cold-rolled alloy slab to obtain low-density corrosion-resistant steel.

[0043] The invention melts the raw material of the low-density corrosion-resistant steel to obtain the alloy ingot. In the present invention, the raw material of the high-strength ...

Embodiment 1

[0067] In terms of mass percentage, 0.6% carbon, 28% manganese, 8% aluminum rod with a diameter of 25mm, 0.2% silicon, 0.5% chromium, 0.1% vanadium, and 0.1% molybdenum, and the balance is an iron rod with a diameter of 25mm.

[0068] After the above raw materials are ultrasonically cleaned in acetone and alcohol, the aluminum, manganese, iron and silicon in the raw materials are placed in a magnesia crucible in a vacuum induction furnace, and the vanadium, chromium, carbon and molybdenum in the raw materials are placed In the secondary feeding hopper of the vacuum induction furnace; evacuate the vacuum induction furnace to a vacuum of 0.02MPa, then fill the vacuum induction furnace with high-purity argon to a vacuum of 0.03MPa; set the power of the vacuum induction furnace to 5kW, heating 5min; the power of the vacuum induction furnace is set to 10kW, heating 5min; the power of the vacuum induction furnace is set to 20kW, and after heating for 10min, pour the raw materials in ...

Embodiment 2

[0075] In terms of mass percentage, 0.9% carbon, 30% manganese, 10% aluminum rod with a diameter of 25mm, 0.3% silicon, 1.5% chromium, 0.4% vanadium, 0.5% molybdenum, and the balance is an iron rod with a diameter of 25mm.

[0076]After the above raw materials are ultrasonically cleaned in acetone and alcohol, the aluminum, manganese, iron and silicon in the raw materials are placed in a magnesia crucible in a vacuum induction furnace, and the vanadium, chromium, carbon and molybdenum in the raw materials are placed In the secondary feeding hopper of the vacuum induction furnace; evacuate the vacuum induction furnace to a vacuum of 0.02MPa, then fill the vacuum induction furnace with high-purity argon to a vacuum of 0.04MPa; set the power of the vacuum induction furnace to 5kW, heating 6min; the power of the vacuum induction furnace is set to 10kW, heating 6min; the power of the vacuum induction furnace is set to 20kW, and after heating for 12min, pour the raw materials in the ...

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Abstract

The invention belongs to the technical field of alloy materials, and particularly relates to low-density corrosion-resistant steel and a preparation method and application thereof. The low-density corrosion-resistant steel comprises the following element components of, by mass, 0.6-1.7% of C, 8-12% of Al, 0.2-0.5% of Si, 28-35% of Mn, 0.5-2.5% of Cr, 0.1-0.9% of V, 0.1-1.3% of Mo, and the balanceFe and inevitable impurities. Compared with a contrast material 40Cr steel, the low-density corrosion-resistant steel has the advantages that the density is low, and the corrosion resistance is better; and the result of the embodiment shows that the density of the low-density corrosion-resistant steel obtained according to the preparation method is reduced by 12.106-17.65% compared with the density of the 40Cr steel, and the corrosion resistance is improved by 22.18-50.16%.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, in particular to a low-density corrosion-resistant steel and its preparation method and application. Background technique [0002] With the development of industry, the application of stainless steel is more extensive, especially with the large-scale and professional development of ships, the ship industry has put forward higher requirements for the strength of stainless steel. Stainless steel is facing great challenges due to increasingly harsh conditions. It is difficult for traditional stainless steel to meet the current standards in engineering applications in terms of corrosion resistance. [0003] At the same time, with the continuous development of industry, the ecological environment is also deteriorating. In order to reduce the impact of industrialization on the environment, it is necessary to reduce the material density to achieve the effect of energy saving and emission reducti...

Claims

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Application Information

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IPC IPC(8): C22C38/06C22C38/02C22C38/38C22C38/24C22C38/22C21D8/02B62D29/00B63B3/00B63B3/48
CPCB62D29/00B63B3/00B63B3/48C21D8/0421C21D8/0426C21D8/0436C21D8/0447C22C38/02C22C38/06C22C38/22C22C38/24C22C38/38
Inventor 刘日平王飞王锁涛陈博涵马巍唐轶浩张新宇景勤马明臻
Owner YANSHAN UNIV
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