焊縫高度 的英文怎麼說
中文拼音 [hànfénggāodù]
焊縫高度
英文
weld bead height-
The welding technology of francis turbine runners is optimized from the view of subsection welding and local heating by numerical simulation. the result shows that welding residual tensile stress appears in the weld and its area nearby, and peak stress appears in the dangerous area of blades after practising quondam welding technology ; welding residual tensile peak stress in the dangerous area of blades can be decreased by welding both ends earlier and then welding middle section later during subsection welding, and decreasing effect on welding residual stress of the subsection welding is related to the weld length of blade outlets and welding direction of each subsection ; decreasing effect on residual stress of the local heating is direct proportional to heating time, heating temperature, heating area, and inversely proportional to cooling area, and welding residual tensile peak stress in the dangerous area is decreasing trend earlier, and then increasing trend later with heated location increased
本文利用數值模擬手段對轉輪的焊接工藝從分段焊和局部加熱兩個方面進行了優化,結果表明:採用普通工藝焊接時,葉片焊后殘余拉應力出現在焊縫及其附近區域,並且在葉片出水邊的熔合線附近(危險區域)出現了峰值;在採用優化的分段焊時,先焊兩端后焊中間的方法可以降低葉片危險區域的焊接殘余拉應力峰值,降低效果與葉片出水邊焊段長度、焊縫各段的焊接方向有關;局部加熱法降低轉輪危險區域殘余應力的效果主要與加熱時間、加熱溫度以及加熱面積成正比,與冷卻面積成反比,並且危險區域的殘余應力隨加熱區域的增大呈先降低后升高的趨勢。All the size of fillet welds k are the thickness of the wall except those marked
未注焊縫焊角高度k均為焊件中薄壁的厚度。The explosive welding specimen were also annealed in vacuum at various elevated temperature from 1000 to 1300. optic microscope, sem, tem and eds ( electron diffraction scattering ) techniques are applied to observe the microstructure and the element profiles of the welding interface and the interdiffused layer, reveal the interdiffused performance of alloy elements at elevated temperature, and analyze the structure and composition of the precipitated phases. moreover, the tensile strength of welding line with the two different techniques and various welding parameters were carried out
採用金相、掃描電鏡、透射電鏡、能譜等多種實驗手段對焊接結合層的微觀組織結構、高溫下nb - 1zr與不銹鋼合金元素的互擴散行為,形成的互擴散層的成分、金相組織和擴散層中的析出相的相組成和相結構等,都進行了較為詳細的分析,並且對在不同工藝、不同焊接參數下焊接的nb - 1zr合金和不銹鋼的焊縫做了強度實驗研究。The results show that the absolute humidity of the welding environment has great influence on the hydrogen diffusion, and that the greater the absolute humidity, the higher the content of hydrogen diffused in deposited metal
結果表明,焊接環境的絕對濕度對超低氫焊條熔敷金屬中擴散氫含量有較大影響,絕對濕度越大,焊縫金屬中擴散氫含量越高。Determination of shear strength of welded joints of reinforcement mats or cages for prefabricated components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure
高壓充氣混凝土或敞開結構輕型聚集混凝土預製件用加筋氈或框架的焊縫剪切強度測定A fuzzy control system of stepping motor for seam tracking is presented in this paper, the proposed system can realize the self - modify ing of the parameters and improve the characteristics of dynamic and static state of stepping driving system according to the error of seam tracking. the accuracy of seam tracking is enhanced obvi ously
介紹一種用於焊縫跟蹤的步進電機模糊控制系統,該系統可根據跟蹤偏差進行參數自調整,改善了步進驅動系統的動靜態特性,提高了焊縫跟蹤精度。The results of the experiments show that the ti3al - tcll dual alloys, by vacuum - electron - beam weld, hot die forging and 680c / 12h, ac, heat treatments, have satisfied synthesis properties of intensity, plasticity, hardness. and also it is the feasiblie way. this will establish the supporting technology for the manufacture of the compress disk in the areoengine
實驗結果表明,經真空電子束焊接ti _ 3al ? tc11雙合金經過熱模鍛造和680 12h , ac或815 1h + 700 8h , ac熱處理后,焊接區組織過渡均勻,可以使得焊縫處強度在室溫拉伸時高於ti _ 3al ,而在600拉伸時高於tc11合金,獲得強度、塑性、硬度均令人滿意的綜合性能,且是一條可行的工藝路線。The commonly used methods of connections, especially the high - strength bolted connection and welding with bolting mixed connections are discussed in more detail. the analysis for the problems, such as partial penetrated butt weld and welding deformation is also discussed in the paper
對工程中採用較多連接如高強度螺栓連接、栓-焊混合連接等作了較深入分析;對工程中容易出現問題連接如不焊透的對接焊縫計算方法及可能出現的焊接變形及處理等問題也作了較深入探討。Compared with conventional weld methods, electron beam welding possesses such advantages as high power density, strong penetrability, precise, high speed, good control ability, good protection effect and high quality
與常規的焊接方式相比,電子束焊接具有功率密度高、穿透能力強、精確、快速、可控性好、保護效果好、焊縫質量高等優點。The effect of girth weld strength match on the limit load and fracture resistance of high - grade, large diameter pipelines was analyzed with failure analysis diagram ( fad ) method
摘要採用失效評定圖技術分析了油氣長輸管道特別是高強度大口徑管道環焊縫不同強度匹配形式對管道極限承載能力以及抗斷性能的影響。Effect of girth weld strength match on limit load and fracture resistance of high strength, large diameter pipelines steel is analyzed with fad ( failure analysis diagram ) method
摘要採用失效評定圖技術分析了油氣長輸管道中高強度管?鋼大口徑管道環焊縫不同強度匹配形式對管道極度限承載能力以及抗斷性能的影響。The question of ultra - sonic inspection on weld defect detecting of net frame spherical shape contact point is introduced in this paper, the detected rate of weld defect of net frame spherical shape contact point was significantly increased by improving the ultra - sonic exploring block, ultrasonic sensitivity special standard reference block and reference block, and ultra - sonic inspection process method
摘要介紹了超聲波探傷技術在檢測網架球接點焊縫缺陷中存在的問題;通過對超聲波探頭、靈敏度專用標準當量試塊和參考試塊以及超聲波探傷工藝等的改進,提高了球接點網架焊縫缺陷的檢出率。Abstract : in view of the quantity examination of weld defect by ultrasonic, on the basis of theoretical analysis and test, the cause, composition and contriling method of error of crack defect size h have been analyzed systematically, a controlling and statistical method of ultrasolic examination error has been put forward. this method is simple and suitable, and has been verified by test
文摘:針對焊縫缺陷超聲波定量檢測,從理論分析與實驗出發,系統分析了裂紋類缺陷自身高度尺寸h的檢測誤差的物理成因、組成及誤差控制方法,提出了一套實用簡潔並經實驗證實可行的超聲波檢測誤差控制及統計方法。Both single and double fillet welds shall be as follows unless otherwise shown on the drawing
除非圖上另外標明,所有單、雙面貼角焊縫高度如下。The opening stress and the life of crack growth is calculated and compared with the test results and the experience formula. the feasibility of the newman theory of opening stress used in the high strength steel is validated. then through the slice synthesis method, the three dimension surface crack of the weld joint of cone - cylinder is decomposed into many plane through cracks
本文將基於裂紋閉合現象建立的帶狀屈服模型,用在平面貫穿裂紋中,計算此時的裂紋張開應力和疲勞裂紋擴展壽命,與試驗結果和經驗公式比較,驗證newman裂紋張開應力理論在高強鋼中的可行性;然後,用切片合成法,把潛艇結構凸錐柱結合殼焊縫處的三維表面裂紋分解成平面貫穿裂紋,用帶狀屈服模型的理論來分析平面貫穿裂紋,得到裂紋沿深度方向的擴展速率,進而得到潛艇結構的疲勞壽命。The welding position can be detected accurately through processing the image of arc area collected by the vision sensor ccd ( charge coupled device ), by the system of image collection and computer - ware, we can recognize the position of the welding line exactly, count out the warp between moving track of robot and the welding line. so we can control the robot ' s act real - timely, the seam tracking accuracy is enhanced efficiently
重點論述焊縫圖像分割和邊緣提取的理論方法,焊縫圖像由面陣ccd攝像系統攝取,通過圖像採集系統和計算機軟體,對檢測到的弧焊區圖像進行處理來準確地識別焊縫位置,計算機器人的運動軌跡和實際焊縫之間的偏差,據此控制機器人運動進行實時跟蹤,從而有效地提高焊縫跟蹤精度。Standard specification for hot - formed welded and seamless high - strength low - alloy structural tubing
熱塑焊接和無縫高強度低合金結構鋼管的標準規范Standard specification for cold - formed welded and seamless high - strength, low - alloy structural tubing with improved atmospheric corrosion resistance
提高耐大氣腐蝕性的冷成型焊接和無縫高強度低合金結構管道用標準規范After comparing the detecting result and the actual height of metal parts, it showed that the detecting error was in the nature figuration error range of one welding seam
經與實驗獲得的實際金屬結構高度數據對比,得到金屬結構高度檢測的誤差在單道焊縫的自然成形的高度誤差范圍內的結果。The results show that : the strength and fatigue lifetime of the outer casing including welding line can satisfy the design requirement. although the some parts of bearing has been yielded, the strength at the weld is large enough for requirement. and welding defect, indicted by sem analyses of failure section, is main reason affecting fatigue lifetime
分析結果表明:外機匣(包含焊縫)強度和壽命滿足設計強度和壽命的要求;軸承座的強度已經進入屈服階段,而軸承座及其焊縫處的壽命卻是滿足設計壽命要求;另外斷口的金相分析表明焊接缺陷的存在是影響疲勞壽命的主要原因之一,故需提高焊接技術,減少焊接缺陷的存在以提高焊接結構的壽命。分享友人