【摘要】：飛機(jī)安裝式導(dǎo)管感應(yīng)釬焊技術(shù)是為了適應(yīng)航空、航天飛機(jī)中導(dǎo)管現(xiàn)場(chǎng)安裝而提出的一種特殊工藝，是一種先進(jìn)的導(dǎo)管連接技術(shù)，它適用于空間位置狹窄的安裝式導(dǎo)管釬焊，對(duì)其深入研究具有重要的理論意義和工程應(yīng)用價(jià)值。根據(jù)我國新型戰(zhàn)機(jī)和航天飛機(jī)生產(chǎn)與研制的迫切需要，對(duì)安裝式導(dǎo)管感應(yīng)釬焊關(guān)鍵技術(shù)進(jìn)行了研究，研究了新一代先進(jìn)的安裝式導(dǎo)管感應(yīng)釬焊技術(shù)及其成套設(shè)備。 在準(zhǔn)諧振的情況下，感應(yīng)加熱回路處于工作狀態(tài)，保證了電路工作環(huán)境的穩(wěn)定性，，采取新型測(cè)溫的方式、光纖傳導(dǎo)二者并存的模式，避免了電磁場(chǎng)對(duì)其帶來的干擾，保證了安裝式導(dǎo)管釬焊的準(zhǔn)確性�；谝陨霞夹g(shù)，研制了具有自主知識(shí)產(chǎn)權(quán)的安裝式導(dǎo)管感應(yīng)釬焊成套設(shè)備。 安裝式導(dǎo)管感應(yīng)釬焊溫度及溫度場(chǎng)分布是影響焊接質(zhì)量的關(guān)鍵因素。本次研究著重于安裝式導(dǎo)管釬焊的特殊性，建立了加熱源的有限元模型，并根據(jù)這種分析方法對(duì)導(dǎo)管釬焊溫度場(chǎng)進(jìn)行了三維數(shù)值模擬分析。研制了一臺(tái)多點(diǎn)同步熱電偶測(cè)溫儀，對(duì)導(dǎo)管的溫度分布進(jìn)行了實(shí)際測(cè)量和驗(yàn)證。模擬結(jié)果再現(xiàn)了導(dǎo)管焊接區(qū)域的溫度場(chǎng)分布，為安裝式導(dǎo)管感應(yīng)釬焊配備適合的測(cè)溫點(diǎn)、工藝方法；為缺陷的分析、解決提供了良好的理論依據(jù)和必要的技術(shù)指導(dǎo)。 對(duì)安裝式導(dǎo)管感應(yīng)釬焊質(zhì)量的主要影響因素進(jìn)行了分析，重點(diǎn)研究分析了導(dǎo)管焊接區(qū)域溫度場(chǎng)分布對(duì)焊接質(zhì)量的影響。導(dǎo)管接頭焊接區(qū)域的溫度場(chǎng)分布不均勻，容易在高溫區(qū)產(chǎn)生焊瘤和溶蝕缺陷，而在低溫區(qū)則容易產(chǎn)生未焊透和釬腳未出來等缺陷，是產(chǎn)生焊接缺陷的最主要原因。為了減少焊接缺陷，研究分析了保護(hù)氣體、感應(yīng)線圈的纏繞方式和加熱曲線等因素對(duì)溫度場(chǎng)分布的影響。提出了安裝式導(dǎo)管釬焊工藝優(yōu)化方法與措施，改善了溫度場(chǎng)分布，大幅度地提高了導(dǎo)管接頭的一次合格率和焊接質(zhì)量。所研制的新一代飛機(jī)安裝式導(dǎo)管感應(yīng)釬焊技術(shù)及成套設(shè)備，填補(bǔ)了國內(nèi)在該領(lǐng)域內(nèi)的技術(shù)空白，并且在現(xiàn)場(chǎng)進(jìn)行了大量的工藝試驗(yàn)，完成了相應(yīng)的技術(shù)驗(yàn)證、評(píng)審和驗(yàn)收。該設(shè)備已在我國重點(diǎn)型號(hào)飛機(jī)生產(chǎn)線上獲得了成功應(yīng)用，一次焊接成功率高于同類俄制設(shè)備。
[Abstract]:The induction brazing technology of aircraft-mounted conduit is a special process to adapt to the field installation of conduit in aerospace and space shuttle. It is a kind of advanced conduit connection technology, which is suitable for the brazing of installation tube with narrow space position. It has important theoretical significance and engineering application value for its in-depth study. According to the urgent need of production and development of new-type fighter aircraft and space shuttle, the key technology of induction brazing of installed conduit is studied, and the new generation of advanced induction brazing technology of installed conduit and its complete set of equipment are studied. In the case of quasi-resonance, the induction heating circuit is in the working state, which ensures the stability of the working environment of the circuit, adopts a new way of temperature measurement, and the mode of fiber conduction is coexisting, thus avoiding the interference of electromagnetic field to the circuit. To ensure the accuracy of the installed pipe brazing. Based on the above technology, a complete set of installation induction brazing equipment with independent intellectual property rights has been developed. The temperature and temperature distribution of induction brazing are the key factors affecting welding quality. This research focuses on the particularity of installed pipe brazing, establishes the finite element model of heating source, and carries on the three-dimensional numerical simulation analysis to the brazing temperature field of the pipe according to this analysis method. A multi-point synchronous thermocouple thermometer has been developed, and the temperature distribution of the duct has been measured and verified. The simulation results reproduce the distribution of the temperature field in the pipe welding area, and provide the suitable temperature measurement point and process method for the induction brazing of the installed conduit, and provide a good theoretical basis and necessary technical guidance for the analysis of the defects and the solution of the defects. The main influencing factors of induction brazing quality of installed conduit are analyzed, and the influence of temperature field distribution on welding quality is studied and analyzed with emphasis on the analysis of the influence of the temperature field distribution in the pipe welding area on the welding quality. The non-uniform distribution of the temperature field in the welded zone of conduit joint is the main cause of welding defect, which is easy to produce welding nodule and corrosion defect in high temperature region, while in low temperature region, it is easy to produce defects such as unwelded penetration and brazing foot not coming out, which is the main cause of welding defect. In order to reduce welding defects, the effects of shielding gas, winding mode of induction coil and heating curve on temperature distribution are studied and analyzed. The optimization method and measures of installation pipe brazing process are put forward. The temperature field distribution is improved and the first pass rate and welding quality of pipe joint are greatly improved. The new generation of induction brazing technology and complete sets of equipment for the installed conduit of aircraft have filled the technical gap in this field in China, and a large number of process tests have been carried out in the field, and the corresponding technical verification, evaluation and acceptance have been completed. The equipment has been successfully applied in the production line of key aircraft in our country, and the success rate of one-time welding is higher than that of similar Russian-made equipment.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：V261.34

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