基于DOE的压力传感器螺纹型芯体粘接技术研究
2022-06-21甘茂锐张朝霞
甘茂锐 张朝霞



摘要:航空发动机领域压力传感器的实际工况恶劣且环境条件苛刻,其接管嘴与螺纹型芯体的粘接密封技术属压力传感器生产制造的关键工艺技术。为实现粘接强度高、耐久性长、耐温性能优良的要求,设计了以粘接接头结构、胶粘劑类型、涂覆位置为因子的试验设计方案(DOE)。通过DOE分析,获得了压力传感器接管嘴与螺纹型芯体粘接工艺因子对粘接质量的影响程度,并通过泄漏率指标测量与耐压过压、温度冲击、振动环境试验对压力传感器进行数据测试与考核验证,确认了最佳工艺方案。
关键词:实验设计法(DOE);航空发动机;压力传感器;接管嘴;螺纹型芯体;粘接
中图分类号:TP212
文献标识码:B文章编号:1001-5922(2022)06-0029-06
Research on thread core bonding technology of pressure sensor based on DOE
GAN Maorui, ZHANG Zhaoxia
(AECC Aero Engine Control System Institute, Wuxi 214063, Jiangsu China
)
Abstract:The actual working conditions of pressure sensors in the field of aeroengine are harsh and the environmental conditions are strict. The bonding and sealing technology between nozzles and thread cores is the key technology in the production and manufacture of pressure sensors. In order to meet the requirements of high bonding strength, long durability and excellent temperature resistance, a DOE scheme was designed with bonding structure, adhesive type and coating position as factors. Through DOE analysis, the influence of the bonding process factors on the bonding quality of the pressure sensor nozzle and the thread core was obtained, and the pressure sensor was tested and verified by the leakage rate index measurement and pressure overpressure, temperature shock, vibration environmental test, and finally confirmed the best process scheme.
Key words:Design of Experiments(DOE); aeroengine; pressure sensor; nozzle; thread core; adhesive
粘接技术是利用胶粘剂将相同或不同材料连接成为一个连续、牢固、稳定的整体的一种工艺方法[1],金属粘接技术具有工艺简单、密封防腐性能好、可提高疲劳寿命、可减轻质量等特点[2-3]。相比于铆接、焊接等传统工艺,因焊接、铆接容易产生应力集中和变形[4],且本身工艺复杂,在某些特殊的领域已被粘接工艺逐渐取代[5]。目前传感器生产制造中,粘接技术应用非常普遍,基于传感器行业小型化、轻量化与可靠性趋势[6],粘接工艺技术作为螺纹型机械接口最主要的封装密封形式,具有不可取代的特点。
本文主要针对航空发动机领域压力传感器的接管嘴与螺纹型芯体的粘接密封技术,航空发动机领域压力传感器的实际工况复杂多变,需满足高负荷、高温、高压、高速、高振动、高疲劳寿命等恶劣与苛刻的环境条件。……
