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Method for accurately measuring aperture of air film hole of hot end component coated with thermal barrier coating

A technology of thermal barrier coating and hot-end components, applied in the field of measurement, can solve the problems of harsh service environment, long operating cycle, and high operating temperature

Inactive Publication Date: 2021-09-07
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of engine power and efficiency, the service environment of engine hot-end components (such as: blades, flame tubes, transition sections, etc.) is more severe, with higher operating temperatures and longer operating cycles

Method used

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  • Method for accurately measuring aperture of air film hole of hot end component coated with thermal barrier coating
  • Method for accurately measuring aperture of air film hole of hot end component coated with thermal barrier coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, the change of the air film hole diameter in the vertical direction of the tile of the hot end component after the thermal barrier coating is applied is measured, and the specific steps are as follows:

[0026] Step 1: Clean the hot-end parts that need to measure the aperture, use compressed air to remove dust on the surface of the thermal barrier coating, and wipe the alloy substrate with alcohol cotton balls, dry it, and set aside;

[0027] Step 2: Squeeze the replicating agent from the thermal barrier coating side into the air film hole to be measured;

[0028] Step 3: Cover a piece of offset paper on the replicating agent, then press down slowly and apply appropriate pressure to make the replicating agent completely enter the air film hole and fully fit with the air film hole without air bubbles or gap;

[0029] Step 4: After standing still for 8 minutes, make the replica agent completely dry and solidify;

[0030] Step 5: Hold the replica with ...

Embodiment 2

[0034] In this embodiment, the change of the air film hole diameter in the inclined direction of the tile of the hot end component after the thermal barrier coating is applied is measured, and the specific steps are as follows:

[0035] Step 1: Clean the hot-end parts that need to measure the aperture, use compressed air to remove dust on the surface of the thermal barrier coating, and wipe the alloy substrate with alcohol cotton balls, dry it, and set aside;

[0036] Step 2: Squeeze the replicating agent from the thermal barrier coating side into the air film hole to be measured;

[0037] Step 3: Cover a piece of offset paper on the replicating agent, then press down slowly and apply appropriate pressure to make the replicating agent completely enter the air film hole and fully fit with the air film hole without air bubbles or gap;

[0038] Step 4: After standing still for 8 minutes, make the replica agent completely dry and solidify;

[0039] Step 5: Hold the replica with ...

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Abstract

The invention relates to the technical field of measurement, in particular to a method for accurately measuring the aperture of an air film hole of a hot end component coated with a thermal barrier coating. A mixture of silicone rubber and a silicone rubber curing agent is adopted as a replica agent, a 3D replica sample coated with thermal barrier coating and having complete air film holes can be obtained, and the shape and size of the 3D replica sample are observed and measured under a laser confocal microscope. The method is high in replica precision, the original size of the air film hole and the shape of the hole diameter reduction part of the air film hole caused by coating of the thermal barrier coating can be conveniently and clearly observed, and size measurement is accurate and simple. Meanwhile, the method is simple and convenient in operation process, short in detection period and low in cost, does not need to damage parts, and is particularly suitable for field inspection of large-size hot end parts.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a method for accurately measuring the aperture diameter of a gas film hole of a hot end part coated with a thermal barrier coating. Background technique [0002] Gas turbines and aero engines are the key power systems of industrial equipment and aircraft, and are one of the important symbols to measure the level of my country's industrial development. The development trend of modern gas turbine engines is high thrust, high efficiency, low fuel consumption and long life. The power and efficiency of the engine are closely related to the working temperature. Increased by 1.0%. With the improvement of engine power and efficiency, the service environment of engine hot-end components (such as: blades, flame tubes, transition sections, etc.) is more severe, with higher operating temperatures and longer operating cycles. At present, the materials used for hot end parts are mainly n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08G01B11/24
CPCG01B11/08G01B11/24
Inventor 张甲侯万良栾胜家高明浩常辉朱宏博徐娜常新春
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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