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A kind of novel non-magnetic stainless steel and preparation method thereof

A non-magnetic stainless steel, a new type of technology, applied in the field of alloy materials, can solve the problems that the strength and wear resistance cannot meet people's requirements, the corrosion resistance and wear resistance are insufficient, and the service life of the material is affected, and the impact toughness is enhanced. , strong corrosion resistance and good mechanical properties

Active Publication Date: 2017-05-03
东莞市雅鲁实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as people's performance requirements for materials are getting higher and higher, the strength and wear resistance of the material during use can no longer meet people's requirements, especially when working in marine environments, its corrosion resistance and wear resistance Significantly insufficient performance, not only affects the appearance quality, but also greatly affects the service life of the material, resulting in increased costs and prone to safety accidents

Method used

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  • A kind of novel non-magnetic stainless steel and preparation method thereof
  • A kind of novel non-magnetic stainless steel and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] A new type of non-magnetic stainless steel, the components of the new type of non-magnetic stainless steel calculated by weight percentage (the following % all represent weight percentage) are: carbon is 0.18%, nickel is 3.15%, chromium is 8.71%, manganese is 11.8%, Silicon 4.80%, niobium 0.57%, vanadium 0.23%, molybdenum 1.5%, titanium 3.56%, rare earth 0.31%, the total amount of phosphorus and sulfur does not exceed 0.035%, the balance is iron and its inevitable impurities .

[0029] The above-mentioned novel non-magnetic stainless steel is obtained by the following steps:

[0030] Step 1. Smelting with an intermediate frequency induction furnace, put the raw iron into the converter for heating and melting, after all the raw iron is melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550°C, and then add a decarburizer to the molten pool , desulfurizer, deoxidizer, decarbonize, desulfurize and deoxidize ...

Embodiment 2

[0040] A new type of non-magnetic stainless steel, the components of the new type of non-magnetic stainless steel calculated by weight percentage (the following % all represent weight percentage) are: carbon is 0.15%, nickel is 5%, chromium is 8%, manganese is 8%, Silicon 4%, niobium 0.65%, vanadium 0.47%, molybdenum 1.2%, titanium 3%, rare earth 0.33%, the total amount of phosphorus and sulfur does not exceed 0.035%, and the balance is iron and its inevitable impurities .

[0041] The above-mentioned novel non-magnetic stainless steel is obtained through the following steps:

[0042] Step 1. Smelting with an intermediate frequency induction furnace, put the raw iron into the converter for heating and melting, after all the raw iron is melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550°C, and then add a decarburizer to the molten pool , desulfurizer, deoxidizer, decarbonize, desulfurize and deoxidize molten...

Embodiment 3

[0052] A new type of non-magnetic stainless steel, the components of the new type of non-magnetic stainless steel calculated by weight percentage (the following % all represent weight percentage) are: carbon is 0.21%, nickel is 3%, chromium is 13%, manganese is 11%, Silicon 5%, niobium 0.48%, vanadium 0.13%, molybdenum 1.7%, titanium 4%, rare earth 0.27%, the total amount of phosphorus and sulfur does not exceed 0.035%, the balance is iron and its inevitable impurities .

[0053] The preparation method of the above-mentioned novel non-magnetic stainless steel comprises the following steps:

[0054] Step 1. Smelting with an intermediate frequency induction furnace, put the raw iron into the converter for heating and melting, after all the raw iron is melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550°C, and then add a decarburizer to the molten pool , desulfurizer, deoxidizer, decarbonize, desulfurize and de...

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Abstract

The invention discloses novel non-magnetic stainless steel which consists of the following components in percentage by weight (% hereinafter being percentage by weight): 0.15%-0.21% of carbon, 3%-5% of nickel, 8%-13% of chromium, 8%-11% of manganese, 4%-5% of silicon, 0.48%-0.65% of niobium, 0.13%-0.47% of vanadium, 1.2%-1.7% of molybdenum, 3%-4% of titanium, 0.27%-0.33% of rare earth, less than or equal to 0.035% of phosphor and sulfur, and the balance of iron and other inevitable impurities. Based on the original non-magnetic stainless steel, the novel non-magnetic stainless steel has highly improved mechanical performance by changing alloy components and adding a novel component; meanwhile, the structural texture of steel is changed by changing a preparation process and controlling the parameters in the process, so that the obtained steel is good in various performances, high in corrosion resistance, good in shape memory effect and especially suitable for pipeline connection on ships and warships.

Description

technical field [0001] The invention relates to an alloy material, in particular to a novel non-magnetic stainless steel and a preparation method thereof. Background technique [0002] At present, the non-magnetic steel widely used in the domestic industry is 18-8 austenitic stainless steel, and the smelting and processing technology of non-magnetic steel is very mature in China. However, as people have higher and higher performance requirements for materials, the strength and wear resistance of the material during use are increasingly unable to meet people's requirements, especially when working in a marine environment, its corrosion resistance and wear resistance are Significantly insufficient performance, not only affects the appearance quality, but also greatly affects the service life of the material, resulting in an increase in the corresponding cost and easy occurrence of safety accidents. [0003] Shape memory alloy is a functional material that integrates temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C21D8/02
Inventor 奉明军
Owner 东莞市雅鲁实业有限公司
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