端接焊縫 的英文怎麼說
中文拼音 [duānjiēhànféng]
端接焊縫
英文
edge weld-
As an application of this fem preprocessing system, the simulation on the welding process of missile ’ s oil box was performed, in which the effects of the welding sequences of four web plates and welds on each web plate are primarily analyzed. the simulation results show that the deformations under varied welding sequences are almost the same. downward deflection deformation is obtained along the weld longitudinal direction in the structure as well as upward deflection deformation along the weld traverse direction
對于某型號導彈油箱結構焊接過程的數值模擬計算，主要考察了每塊立板上各段焊縫焊接順序的調整、四塊立板之間不同的焊接順序以及焊接起始端的選擇對結構焊后變形的影響規律，模擬結果表明:壁板在各種焊接順序下的整體變形規律基本相似，即焊後壁板沿焊縫縱向發生了向下的撓曲變形，中部向下變形量最大;沿焊縫橫向發生了向上的撓曲變形，壁板兩端部變形量較大，且壁板前端變形大於壁板後端。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。The kind of welding equipment is suitable forwelding the qarts in appplications of heat exchanger in - out water pipe port of electical heater and hot pipe fittings simple operation low lost and good seam foring are the advan tages. it is an essential and special equipment in the profression of tube - making electrical and solar water heaters
該系列焊接設備適用於太陽能熱水器端蓋及水箱內受到影響上的進出水管、熱管接頭、電加熱器接頭及搪瓷水箱進出水管的自動化焊接，焊縫盛開有美觀、效率高、成本上升低，是制桶業、太陽能熱水器、電熱水器等行業必不可少的專用設備。The conclusion of reappearing analysis is that crane bridge be used as usual because main weld maximum stress of upper cover plate of main beam lower than yield limit though it higher than permissible stress. inner stress of secondary beam was over ultimate strength, and deforming is ultra big. so it was unfit for produce and secondary beam must be changed
再現分析得出的主要結論為：橋架的主樑上蓋板主焊縫的最大應力超過了許用應力，但小於屈服極限，可以繼續投入使用；副梁內部的應力遠遠超過了強度極限，變形特別嚴重，不能滿足生產要求，因此更換新的副梁；端梁內部的應力超過了屈服極限，小於強度極限，在應力較大的位置焊接補強板；投入使用后，要對整個橋架進行定期檢查。Hydraulic fluid power - plain - end, seamless and welded precision steel tubes - dimensions and nominal working pressures iso 10763 : 1994
液壓傳動.端面平齊的無縫和焊接型精密鋼管.尺寸和標The strain energy release rates g near crack tip under different conditions were calculated by employing three methods of the fracture mechanics ( j - integral, straightforward method and crack tip opening displacement method )
並在有限元模擬中採用三種不同的斷裂力學方法（裂縫頂端開口位移方法、直接方法、 j積分方法）計算了焊點斷裂與否時的能量釋放率g 。The benchmark data for theoretical analysis are obtained by calculation results of finite element models. in order to have a sound finite element model, the plastic quadrilateral shell elements model established in 1996 by bahaari and sherbourne is improved by using solid 8 nodes elements in ansys programs
為了使理論分析有充分而且精確的基本數據，本文改進了bahaari和sherbourne提出的四邊形塑性殼單元有限元模型，建立了能夠考慮焊縫、摩擦力和預應力等因素影響的端板連接節點的三維實體單元有限元模型。Petroleum and natural gas industries. non - destructive testing methods of steel tubers for pressure purposes. ultrasonic testing of the ends of seamless and welded steel tubes for the detection of laminar imperfections
石油天然氣工業.承壓鋼管無損檢測方法.無縫和焊接鋼管管端分層缺欠的超聲波檢測分享友人