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Ultra high-temperature resistant nickel-chrome alloy and manufacturing method thereof

A technology of nickel-chromium alloy and manufacturing method, which is applied in the field of high-temperature-resistant nickel-chromium alloy and its manufacturing, and can solve the problem of insufficient stability of quality indicators such as high-temperature resistance and tensile strength, materials that cannot withstand high temperatures, and insufficient control of copper elements in parameter control Accuracy and other issues, to achieve the effect of comprehensive performance improvement, high cost-effectiveness, and metallographic structure improvement

Inactive Publication Date: 2010-03-31
杭正奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome these shortcomings, I filed an application for an invention patent in 2006 and boldly added a small amount of copper and aluminum elements to the material. The materials sometimes still cannot withstand high temperature, so the quality indicators such as high temperature resistance and tensile strength of the product are not stable enough

Method used

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  • Ultra high-temperature resistant nickel-chrome alloy and manufacturing method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: The formula of high temperature resistant nickel-chromium alloy consists of: C: 0.1 (weight percent, the same below), Si: 0.5, Mn: 1.0, S: 0.014, Cr: 21, Ni: 58, Al: 1.0, Cu: 1, Fe is the balance.

[0023] After batching according to the above alloy components, smelting is carried out; the second step is secondary refining; the third step is thermal processing, first heated to 900 ° C, and after 40 minutes of heat preservation, forging is carried out; the fourth step is cold processing; Five steps, using water cooling for heat treatment.

Embodiment 2

[0024] Example 2: The formula of high temperature resistant nickel-chromium alloy consists of: C: 0.08 (weight percent, the same below), Si: 0.5, Mn: 1.0, S: 0.014, Cr: 25, Ni: 63, Al: 1.7, Cu: 0.5, Fe is the balance.

[0025] After batching according to the above alloy composition, smelting is carried out; the second step is secondary refining; the third step is thermal processing, first heated to 1200 ° C, and after 10 minutes of heat preservation, forging is carried out; the fourth step is cold processing; Five steps, using water cooling for heat treatment.

Embodiment 3

[0026] Example 3: The formula of high temperature resistant nickel-chromium alloy consists of: C: 0.05 (weight percent, the same below), Si: 0.1, Mn: 0.3, S: 0.008, Cr: 23, Ni: 60, Al: 1.01, Cu: 0.51, Fe is the balance.

[0027] After batching according to the above alloy components, smelting is carried out; the second step is secondary refining; the third step is thermal processing, first heated to 950 ° C, and after 15 minutes of heat preservation, forging is carried out; the fourth step is cold processing; Five steps, using water cooling for heat treatment.

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Abstract

The invention provides an ultra high-temperature resistant nickel-chrome alloy and a manufacturing method thereof, wherein the ultra high-temperature resistant nickel-chrome alloy has a higher meltingpoint, can resist the high temperature higher than 1300 DEG C for a long time and has better tensile strength and yield strength simultaneously. The ultra high-temperature resistant nickel-chrome alloy basically comprises the following components in percentage by weight: 21-25 of Cr, 58-63 of Ni, Al which is not less than 1 and not more than 1.7, Cu which is not less than 0.5 and not more than 1.0, C which is not less than 1 and more than 0.1, Si which is not less than 0.5 and more than 0, Mn which is larger than 0 and not more than 1.0, S which is larger than 0 and less 0.015, and the balance of Fe. The manufacturing method comprises the following steps: mixing the materials according to the alloy components and then smelting; carrying out secondary refining; first heating the mixture to900-1200 DEG C, keeping the temperature for 10-40 minutes, and then forging; cold processing; and water cooling. The invention improves the high-temperature resistant performance, the tensile strength and the yield strength of the alloy, and has better comprehensive benefit. The manufacturing method solves the problems of alloy smelting and heat processing, and improves the product purity.

Description

technical field [0001] The invention relates to a nickel-chromium alloy material and a manufacturing method thereof, in particular to a high-temperature-resistant nickel-chromium alloy and a manufacturing method thereof. Background technique [0002] At present, ordinary high temperature resistant alloy materials such as CH1040, CH3030 and other materials have insufficient high temperature resistance, and can only work at temperatures between 600 ° C and 1200 ° C, and the time is not long, and the high temperature resistance and oxidation resistance are not enough. At present, common nickel-chromium alloy materials such as 2Cr13Ni13, 2Cr15Ni20, 1Cr16Ni25, etc. are not ideal for high temperature resistance. Even a series of high-resistance electrothermal alloys such as Cr20Ni80 can only be used at a maximum temperature of 1200 °C. Therefore, when the material needs to be used at a high temperature above 1200°C, such as when it is applied to large electric ovens, microwave ove...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/00
Inventor 杭正奎
Owner 杭正奎
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