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Method of measuring ultra-low sulfur content in wrought superalloy

A deformed superalloy, ultra-low sulfur technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., to achieve reliable technical support, improve accuracy, and reduce material consumption

Active Publication Date: 2018-08-17
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, and propose an efficient, accurate, and easy-to-operate method for measuring ultra-low sulfur (0.00008% to 0.0010%) content in deformed superalloys, so that it can solve the problem of ultra-low sulfur content in deformed superalloys. Difficulty in measuring sulfur (0.00008%~0.0010%) content

Method used

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  • Method of measuring ultra-low sulfur content in wrought superalloy
  • Method of measuring ultra-low sulfur content in wrought superalloy
  • Method of measuring ultra-low sulfur content in wrought superalloy

Examples

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Embodiment 1

[0063] In this embodiment, the content of ultra-low sulfur (0.00008%-0.0010%) in the deformed superalloy GH4169 is measured by a high-frequency infrared carbon-sulfur analyzer. During the measurement process, the lower limit of the sensitivity of the high-frequency infrared carbon-sulfur analyzer is ±0.0000005%. The working conditions of the instrument are as follows: measurement flow rate 3.0±0.2L / min, measurement pressure 40±2psi, power gas pressure 40±2psi, minimum analysis time 40s; environmental conditions: indoor relative humidity not greater than 60%. The materials used in the measurement process are as follows:

[0064] High-content sulfur standard substance: American AR-673 (0.001 1 ± 0.0002), sulfur content: 0.0011% ± 0.0002%;

[0065] Low-content sulfur standard substance: standard sample YSBC 20117c-2009 (0.00044±0.00009) sulfur content: 0.00044%±0.00009%;

[0066] Porcelain crucible: Al2O3 material, φ25mm×25mm;

[0067] High-purity tungsten tin particle flux: S...

Embodiment 2

[0094] In this embodiment, the content of ultra-low sulfur (0.00008%-0.0010%) in the deformed superalloy GH4169 is measured by a high-frequency infrared carbon-sulfur analyzer. During the measurement process, the lower limit of the sensitivity of the high-frequency infrared carbon-sulfur analyzer is ±0.0000005%. The working conditions of the instrument are as follows: measurement flow rate 3.0±0.2L / min, measurement pressure 40±2psi, power gas pressure 40±2psi, minimum analysis time 40s; environmental conditions: indoor relative humidity not greater than 60%.

[0095] The materials used in the measurement process are as follows:

[0096] High-content sulfur standard substance: American AR-673 (0.0011±0.0002), sulfur content: 0.0011%±0.0002%;

[0097] Low-content sulfur standard substance: standard sample YSBC 20117c-2009 (0.00044±0.00009) sulfur content: 0.00044%±0.00009%;

[0098] Porcelain crucible: Al2O3 material, φ25mm×25mm;

[0099] High-purity tungsten tin particle flu...

Embodiment 3

[0126] In this embodiment, a high-frequency infrared carbon-sulfur analyzer is used to measure the content of ultra-low sulfur (0.00008%-0.0010%) in the deformed superalloy GH4169. During the measurement process, the sensitivity lower limit of the high-frequency infrared carbon-sulfur analyzer is ±0.0000005%. The working conditions of the instrument are as follows: measurement flow rate 3.0±0.2L / min, measurement pressure 40±2psi, power gas pressure 40±2psi, minimum analysis time 40s; The environmental conditions are: the indoor relative humidity is not more than 60%.

[0127] The materials used in the measurement process are as follows:

[0128] High-content sulfur standard substance: American AR-673 (0.0011±0.0002), sulfur content: 0.0011%±0.0002%;

[0129] Low-content sulfur standard substance: Japan JSS 003-6 (0.00013±0.00003), sulfur content: 0.00013%±0.00003%;

[0130] Porcelain crucible: Al2O3 material, φ25mm×25mm;

[0131] High-purity tungsten tin particle flux: S: ≤...

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Abstract

The invention belongs to the field of alloy trace element analysis and relates to a method of measuring ultra-low sulfur content in wrought superalloy. The method comprises the following steps of lowering and stabilizing a blank value, using a high-content sulfur standard substance calibration instrument, measuring a sulfur content total blank value, measuring the sulfur content total blank valuethrough three calibration processes, measuring low-content sulfur standard substances, determining that a measurement value is in a standard substance allowable difference range, and finally measuringthe ultra-low sulfur content in the wrought superalloy to be measured. The method provided by the invention improves the accuracy of a measurement result and provides reliable technical guarantee tosmelting and quality control of the wrought superalloy.

Description

technical field [0001] The invention belongs to alloy trace element analysis technology, and relates to a method for measuring ultra-low sulfur (0.00008%-0.0010%) content in deformed superalloy. Background technique [0002] Wrought superalloys are widely used in the manufacture of high-pressure turbine discs, sealing discs, turbine shafts, casings, fasteners and other important parts in aero-engines. superalloy materials. With the development of high-performance engines, in order to improve the oxidation resistance and corrosion resistance of deformed superalloy materials, as well as have higher yield strength and welding formability, high purity requirements are put forward for deformed superalloy materials. The main manifestation of high purity is that the impurity content in the finished ingot is significantly reduced. The impurity element sulfur contained in it affects the performance of the material because it is easy to aggregate. Therefore, controlling the sulfur ...

Claims

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Application Information

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IPC IPC(8): G01N21/3563
CPCG01N21/3563
Inventor 韦建环张勇颜京
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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