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Method for testing flame retardancy of titanium fire flame-retardant coating

A technology of flame retardant coating and flame retardant performance, which is used in the field of flame retardant performance testing of titanium-resistant flame retardant coatings, which can solve the problems of slow development of flame retardant performance evaluation and verification technology.

Active Publication Date: 2018-05-04
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to technical blockade and other reasons, the development of domestic flame retardant performance evaluation and verification technology is slow

Method used

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  • Method for testing flame retardancy of titanium fire flame-retardant coating

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Embodiment Construction

[0022] In conjunction with the accompanying drawings, a method for testing the flame retardant properties of anti-titanium fire flame retardant coatings is specifically provided, including air supply systems, pushing equipment, rotating equipment, timers, fixing devices, dynamic friction blocks and static friction blocks; dynamic friction blocks and static friction blocks They are all titanium alloys with the same material, and the outer surface of the titanium alloy is coated with an anti-titanium fire and flame-retardant coating; there are multiple dynamic friction blocks, and the size, structure and material are exactly the same; there are multiple static friction blocks, and the size, The structure and material are exactly the same;

[0023] The dynamic friction block is fixedly installed on the rotating equipment, driven and rotated by the rotating equipment; the dynamic friction block is wedge-shaped, and the center line of the wedge is the rotation center line of the dyn...

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Abstract

The invention belongs to the technical field of metal material surface modification and coating and relates to a method for testing flame retardancy of a titanium fire flame-retardant coating. The method comprises the following steps: by taking a friction pair consisting of a coating rotor test sample with a top angle at one end and a coating stator test sample with a round hole in the center as an ignition source, and a friction ignition time as a control parameter, fixing other parameters such as a premixed gas flow temperature, pressure and an oxygen concentration at one value, controllinga gas flow reversing valve through a computer software program, increasing or reducing the friction ignition time till obtaining a plurality of ignitable and non-ignitable testing points, and fillinga preset table with the testing points. When the difference between ignitable and non-ignitable testing points of the stator test sample is smaller than or equal to 0.1 second, a friction ignition time corresponding to a non-ignitable stator test sample is defined as a critical friction ignition time, the tests are continuously repeated for 10 times, and if the stator test samples are all non-ignitable, ignitable and non-ignitable boundaries of test samples are quantitatively described by the critical friction ignition time, that is, the flame retardancy of a tested titanium fire flame-retardant coating is quantitatively represented.

Description

technical field [0001] The invention belongs to the technical field of metal material surface modification and coating, and relates to a method for testing the flame retardant performance of a titanium fire-proof flame retardant coating. Background technique [0002] In high-performance aero-engines, the titanium alloy components of the compressor bear the effects of high temperature, high pressure and high load. When the blades rub against the casing, the combustion of titanium is caused in a short period of time, that is, a titanium fire accident occurs, resulting in The blades were burned, the casing was burned through, and even the entire engine was burned. In addition to more than 100 titanium fire accidents in foreign countries, several titanium fires have occurred during the test run of advanced engines in my country in recent years, which not only caused huge economic losses, but also seriously affected the confidence of engine design in the use of high-temperature t...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/60
CPCG01N3/02G01N3/60
Inventor 弭光宝黄旭曹京霞曹春晓
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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