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High-temperature-resistant and corrosion-resistant alloy and preparation method thereof

A technology of anti-corrosion and high-temperature resistance, applied in the field of high-temperature and anti-corrosion alloy and its preparation, can solve problems such as high price, and achieve the effect of promoting passivation, reducing material cost, and reducing production cost

Inactive Publication Date: 2012-07-25
康定图 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The service life of traditional die-casting machine soup spoon products produced in China is only one week, while the service life of similar products imported from Japan or Taiwan can reach 3 months, but the price is very expensive

Method used

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  • High-temperature-resistant and corrosion-resistant alloy and preparation method thereof
  • High-temperature-resistant and corrosion-resistant alloy and preparation method thereof
  • High-temperature-resistant and corrosion-resistant alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: a kind of high temperature and corrosion resistant alloy;

[0037] (1) Chemical composition:

[0038] C: 3.5%, Si: 2.62%, Mn: 0.34%,

[0039] P: 0.068%, S: 0.07%, Cu: 0.33%,

[0040] Cr: 0.30%, RE: 0.022%, Fe: balance;

[0041] (2) Oxidation test: (800°C for 150 hours) 0.36g / m 2 ,

[0042] Anti-growth test: (800°C for 150 hours) 0.19%,

[0043] Corrosion resistance test: the corrosion medium is 30% NaOH solution (boiling) 2.8g / m 2 ;

[0044] (3) The service life of the soup spoon made of this alloy material is 30 days.

Embodiment 2

[0045] Embodiment 2: a kind of high temperature and corrosion resistant alloy;

[0046] (1) Chemical composition

[0047] C: 3.45%, Si: 2.68%, Mn: 0.36%,

[0048] P: 0.065%, S: 0.074%, Cu: 0.58%,

[0049] Cr: 0.46%, RE: 0.036%, Fe: balance;

[0050] (2) Metallographic: Most graphite is lumpy and flocculent, and a small amount is spherical and wormlike (see attached figure 1 );

[0051] (3) Oxidation test: (800°C for 150 hours) 0.30g / m 2 ,

[0052] Anti-growth test: (800°C for 150 hours) 0.16%,

[0053] Corrosion resistance test: the corrosion medium is 30% NaOH solution (boiling) 2.4g / m 2 ;

[0054] (4) The service life of the spoon product made of this alloy material reaches 45 days.

Embodiment 3

[0055] Embodiment 3: a kind of preparation method of high temperature resistant corrosion resistant alloy, comprising:

[0056] (1) Determine the composition of the prepared alloy and the content of the alloy weight as follows:

[0057] C: 3.4%, Si: 2.91%, Mn: 0.4%,

[0058] P: <0.06%, S: <0.065%, Cu: 0.92%,

[0059] Cr: 0.72%, Re: 0.042%, Fe: balance;

[0060](2) calculate the addition of various iron alloy materials and rare earth alloy materials according to the composition of the alloy and the content of the alloy weight;

[0061] (3) Add cast iron, corrosion-resistant and heat-resistant master alloy Si-Fe and Mn-Fe to the cupola earlier according to the calculated addition amount;

[0062] (4) According to the calculated addition amount, add electrolytic Cu, corrosion-resistant and heat-resistant master alloy Cr-Fe and rare earth ferrosilicon alloy FeSiRe21 into the furnace outer bag;

[0063] Melting temperature of molten iron: 1450°C, melting speed of molten iron: 3...

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Abstract

The invention relates to a high-temperature-resistant and corrosion-resistant alloy and a preparation method thereof. The alloy comprises C, Si, Mn, Cu, Cr, Re, trace P, S and the balance of Fe. The preparation method comprises the following steps of: calculating the addition amount of various iron alloy materials and rare earth alloy materials according to the components of the prepared alloy and the content of the components in the alloy; putting foundry pig iron, and corrosion-resistant and heat-resistant intermediate alloys Si-Fe and Mn-Fe into a cupola furnace and adding electrolytic Cu,an corrosion-resistant and heat-resistant intermediate alloy Cr-Fe, and a rear earth ferrosilicon alloy FeSiRe21 into a ladle outside the furnace according to the calculated addition amount; spheroidizing by a pour-over method and performing wire feeding inoculation; and detecting whether molten metal meets the chemical component requirement or not. Abundant rare earth metals in China instead of noble metals such as nickel, molybdenum and the like are taken as an additive, so that production cost is reduced, and the quality standard of high temperature resistance and corrosion resistance is met at the same time.

Description

technical field [0001] The invention relates to an alloy material and a preparation method thereof, in particular to a high-temperature-resistant and corrosion-resistant alloy and a preparation method thereof. Background technique [0002] Heat-resistant metal materials and corrosion-resistant metal materials are widely used in metallurgy, electric power, building materials, chemical industry and other industries. Such as metal smelting crucible, high temperature electric furnace lining resistance wire, gas furnace bar, etc. This metal material has good high temperature resistance or corrosion resistance in a single high temperature environment or a single highly corrosive environment. However, in an environment with both high temperature and high corrosiveness, a single high temperature resistant or single corrosion resistant material will be quickly destroyed. Such as the bismuth metal smelting crucible of the former Soviet Union, the chemical composition of this crucibl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/08
Inventor 康定图肖天洋
Owner 康定图
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