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High-strength and corrosion-resisting alloy steel material and preparing technology thereof

A preparation process and alloy steel technology, which is applied in the field of steel casting, can solve problems such as insufficient corrosion resistance, achieve the effects of improving ductility, excellent process mechanical properties, and improving corrosion resistance

Inactive Publication Date: 2018-09-04
HEFEI OUSHIJIA ELECTRICAL & MECHANICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel material has insufficient corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The high-strength corrosion-resistant alloy steel material of this embodiment is composed of the following raw materials in weight ratio: C 0.21%, Si0.31%, Mn 0.09%, V 0.21%, Ni 0.34%, Zr 0.09%, Cr 0.11%, Al 0.11%, Nb 0.07%, Ti 0.06%, Ba 0.001%, complex rare earth elements 0.04%, P≤0.03%, S≤0.04%, and the rest is Fe and unavoidable impurities.

[0032] Wherein, the complex rare earth elements include lanthanum, cerium, neodymium, erbium, praseodymium and scandium.

[0033] The present invention also provides a preparation process for the above-mentioned high-strength corrosion-resistant alloy steel material, including the following process steps:

[0034] (1) Melting: put scrap iron, scrap steel and scrap alloy steel into the intermediate frequency furnace, then pass a low current to the intermediate frequency furnace, raise the temperature to 800-1000°C at a heating rate of 5-10°C / min, and then heat up to 800-1000°C with the full load current , the temperature is rais...

Embodiment 2

[0046] The high-strength corrosion-resistant alloy steel material of this embodiment is composed of the following raw materials in weight ratio: C 0.28%, Si0.43%, Mn 0.13%, V 0.25%, Ni 0.42%, Zr 0.17%, Cr 0.15%, Al 0.13%, Nb 0.11%, Ti 0.09%, Ba 0.004%, complex rare earth elements 0.07%, P≤0.03%, S≤0.04%, and the rest is Fe and unavoidable impurities.

[0047] Wherein, the complex rare earth elements include lanthanum, cerium, neodymium, erbium, praseodymium and scandium.

[0048] The present invention also provides a preparation process for the above-mentioned high-strength corrosion-resistant alloy steel material, including the following process steps:

[0049] (1) Melting: put scrap iron, scrap steel and scrap alloy steel into the intermediate frequency furnace, then pass a low current to the intermediate frequency furnace, raise the temperature to 800-1000°C at a heating rate of 5-10°C / min, and then heat up to 800-1000°C with the full load current , the temperature is rais...

Embodiment 3

[0061] The high-strength corrosion-resistant alloy steel material of this embodiment is composed of the following raw materials in weight ratio: C 0.24%, Si0.34%, Mn 0.12%, V 0.23%, Ni 0.39%, Zr 0.11%, Cr 0.14%, Al 0.12%, Nb 0.09%, Ti 0.07%, Ba 0.003%, complex rare earth elements 0.05%, P≤0.03%, S≤0.04%, and the rest is Fe and unavoidable impurities.

[0062] Wherein, the complex rare earth elements include lanthanum, cerium, neodymium, erbium, praseodymium and scandium.

[0063] The present invention also provides a preparation process for the above-mentioned high-strength corrosion-resistant alloy steel material, including the following process steps:

[0064] (1) Melting: put scrap iron, scrap steel and scrap alloy steel into the intermediate frequency furnace, then pass a low current to the intermediate frequency furnace, raise the temperature to 800-1000°C at a heating rate of 5-10°C / min, and then heat up to 800-1000°C with the full load current , the temperature is rais...

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Abstract

The invention discloses a high-strength and corrosion-resisting alloy steel material and a preparing technology thereof. The raw materials and components include 0.21%-0.28% of C, 0.31%-0.43% of Si, 0.09%-0.13% of Mn, 0.21%-0.25% of B, 0.34%-0.42% of Ni, 0.09%-0.17% of Zr, 0.11%-0.15% of Cr, 0.11%-0.13% of Al, 0.07%-0.09% of P, 0.03%-0.04% of S, 0.07%-0.11% of Sb, 0.06%-0.09% of Ti, 0.001%-0.004%of Ca, 0.04%-0.07% of rare earth elements, smaller than or equal to 0.03% of O, smaller than or equal to 0.04% of N, and the balance Fe and inevitable impurities. The steel has good strength and tenacity and has high low-temperature tenacity, the preparing technology is simple, the production cost is relatively low, and the production requirement can be met.

Description

technical field [0001] The invention relates to the technical field of steel casting, in particular to a high-strength corrosion-resistant alloy steel material and a preparation process thereof. Background technique [0002] In addition to iron and carbon, alloy steel is also added with other alloying elements, which is called alloy steel. An iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements to ordinary carbon steel. According to the different added elements and appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and non-magnetic properties can be obtained. At present, there are thousands of alloy steel components and proportions on the market, and their quality is also uneven. The composition and proportions of many common alloy steels have not been scientifically and rationally designed, resulting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/46C22C38/50C22C38/48C22C38/06C22C33/06C21D8/02
CPCC21D8/0226C22C33/06C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/46C22C38/48C22C38/50Y02P10/20
Inventor 孔令翠
Owner HEFEI OUSHIJIA ELECTRICAL & MECHANICAL EQUIP CO LTD
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