Heat-resisting and oxidation-resisting stainless iron

An oxidation-resistant, stainless iron technology, applied in the field of alloy materials, can solve the problems that the heat resistance of stainless steel is not enough to reach a higher standard, and the price of stainless steel is reduced.

Inactive Publication Date: 2016-01-27
常州凯翔医用不锈钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the shortage of nickel resources, the price has skyrocketed, which has prompted people to study ferritic stainless steel, replace nickel with elements such as chromium, manganese, nitrogen, etc. w...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Heat-resistant and oxidation-resistant stainless iron, by weight percentage, the chemical composition of the heat-resistant and oxidation-resistant stainless iron is: C: 0.06, Mn: 0.3, Cr: 18, Ti, 0.5, Mo: 0.5, N: 0.3, Zr: 0.2, P: 0.02, S: 0.02, and the balance is impurities and iron.

[0019] The preparation method of heat-resistant and oxidation-resistant stainless iron comprises the following steps:

[0020] Step 1, put cast iron and C: 0.06, Mn: 0.3, Cr: 18, Ti, 0.5, Mo: 0.5, N: 0.3, Zr: 0.2, P: 0.02, S: 0.02, and the balance is impurities and iron, put into Smelting in a vacuum induction furnace, blowing nitrogen gas into the molten steel after it is completely melted into molten steel;

[0021] Step 2, pouring the molten steel obtained in step 1 into a mold, and casting to obtain a stainless steel workpiece;

[0022] In step 3, the stainless steel workpiece formed in step 2 is taken out and subjected to quenching treatment; the quenched stainless steel workpiece...

Embodiment 2

[0025] Heat-resistant and oxidation-resistant stainless iron, by weight percentage, the chemical composition of the heat-resistant and oxidation-resistant stainless iron is: C: 0.075, Mn: 0.45, P: 0.25, S: 0.02, Cr: 20, Ti, 0.7, Mo: 0.5-1, N: 0.45, Zr: 0.35, P: 0.03, S: 0.03, and the balance is impurities and iron.

[0026] The preparation method of heat-resistant and oxidation-resistant stainless iron comprises the following steps:

[0027] Step 1, cast iron and C:0.075, Mn:0.45, P:0.25, S:0.02, Cr:20, Ti,0.7, Mo:0.5-1, N:0.45, Zr:0.35, P:0.03, S: 0.03, the balance is impurities and iron, put into the vacuum induction furnace for smelting, after completely melting into molten steel, blow nitrogen into the molten steel;

[0028] Step 2, pouring the molten steel obtained in step 1 into a mold, and casting to obtain a stainless steel workpiece;

[0029] In step 3, the stainless steel workpiece formed in step 2 is taken out and then quenched. Quenching Heat the stainless steel...

Embodiment 3

[0032] High-strength corrosion-resistant stainless steel, by weight percentage, the chemical composition of the high-strength corrosion-resistant stainless steel is: C: 0.07, Mn: 0.4, Cr: 19, Ti, 0.6, Mo: 0.6, N: 0.4, Zr: 0.3, P: 0.025, S: 0.025, the balance being impurities and iron.

[0033] Preferably, in the chemical composition of the heat-resistant and oxidation-resistant stainless iron,

[0034] The preparation method of heat-resistant and oxidation-resistant stainless iron comprises the following steps:

[0035] Step 1, C: 0.07, Mn: 0.4, Cr: 19, Ti, 0.6, Mo: 0.6, N: 0.4, Zr: 0.3, P: 0.025, S: 0.025, the balance is impurities and iron, put into the vacuum induction furnace Smelting in the middle, after completely melting into molten steel, nitrogen is blown into the molten steel;

[0036] Step 2, pouring the molten steel obtained in step 1 into a mold, and casting to obtain a stainless steel workpiece;

[0037] In step 3, the stainless steel workpiece formed in step ...

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PUM

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Abstract

The invention discloses heat-resisting and oxidation-resisting stainless iron. The heat-resisting and oxidation-resisting stainless iron includes, by weight, 0.06%-0.08% of C, 0.3%-0.6% of Mn, 18%-22% of Cr, 0.5%-1% of Ti, 0.5%-1% of Mo, 0.3%-0.5% of N, 0.2%-0.4% of Zr, less than 0.03% of P, less than 0.03% of S, and the balance impurities and iron. The heat-resisting and oxidation-resisting stainless iron has the advantages of resisting heat and oxidation.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a heat-resistant and oxidation-resistant stainless iron. Background technique [0002] Stainless iron contains chromium but does not contain nickel, also known as chromium stainless steel, and stainless iron has certain corrosion resistance. Stainless steel is generally considered to be ferromagnetic stainless steel, mainly refers to 1Cr17 (ferrite) series, 1Cr13 (martensite) series, and Fe is not ferromagnetic when it exists in the form of austenite. [0003] At present, stainless steel is roughly divided into three main series: martensitic system, ferritic system and austenitic system. In addition, new series are introduced from the above three series, such as two-phase system, precipitation hardening system and so on. But in general, the center of new product development in recent years is still two alloy series of ferrite and austenite. Due to the shortage of nicke...

Claims

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Application Information

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IPC IPC(8): C22C38/28
Inventor 黄玉祥
Owner 常州凯翔医用不锈钢有限公司
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