Research on the temperature measurement of C919 aircraft landing gear during heat treatment

IF 1.1 4区工程技术 Q4 Engineering

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI:10.32908/hthp.v50.1007

W. Li, Junwei Jia, Zheng Li, Hongfei Cui, Xiaobo Lu, Jian Min, Zhan Liu, Shaofei Li, Jincheng Jia

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引用次数: 1

Abstract

The heat treatment process of C919 aircraft landing gear has to go through a series of strict environments such as vacuum, high temperature, oil quenching, and it has been a difficult problem to accurately measure the temperature of landing gear during heat treatment. A black box hi-temp measurement system is designed on basis of heat transfer theory in this paper. The thermal insulation structures are simulated by finite element analysis software ANSYS, and the simulation results indicate that the system can work continuously for 7 hours at 900 °C. The number and distribution of temperature measurement points are determined according to the standard of AMS 2750E. The temperature variations of measurement points in the process of vacuum furnace heating and oil quenching are real-time recorded by binding the hi-temp measurement system and the landing gear as a whole into the vacuum furnace and oil pool. The results show that the designed hi-temp measurement system has good stability and high accuracy, which is fully capable of withstanding vacuum, high temperature and oil quenching environments. It is the first time in China that this kind of temperature measuring problem has been solved, which is of great significance for the accurate verification of C919 aircraft landing gear during heat treatment process.

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C919飞机起落架热处理过程温度测量研究

C919飞机起落架的热处理过程要经历真空、高温、油淬等一系列严格的环境，在热处理过程中如何准确测量起落架的温度一直是一个难题。基于传热学理论，设计了一套黑箱式高温测量系统。采用有限元分析软件ANSYS对保温结构进行了仿真，仿真结果表明，该系统在900℃下可连续工作7小时。温度测量点的数量和分布按AMS 2750E标准确定。通过将高温测量系统与起落架整体绑定到真空炉和油池中，实时记录真空炉加热和油淬过程中测量点的温度变化。结果表明，所设计的高温测量系统稳定性好，精度高，完全能够承受真空、高温和油淬环境。这是国内首次解决这类测温问题，对C919飞机起落架热处理过程的准确校核具有重要意义。

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来源期刊

High Temperatures-high Pressures THERMODYNAMICS-MECHANICS

CiteScore

1.00

自引率

9.10%

发文量

期刊介绍： High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.