接邊焊縫 的英文怎麼說
中文拼音 [jiēbiānhànféng]
接邊焊縫
英文
root edge-
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。Specially for welding of thin and mid - thickness steel ; suitable for mag co2 welding of low carbon steel and low alloy steel inner wire feeder structure ; zx5 series thyristor dc arc welder ac arc welder with single phase moveable coil for sma mma welding ; suitable for welding low carbon steel, low alloy steel ; suitable for welding mid - thickness steel
可用於所有牌號焊條的直接手工電弧焊接引弧容易，無須用戶調節可遠距離調節焊接電流，便於焊工操作焊機動特性好，性能柔和，電弧穩定焊接熔池平靜，飛濺小，不咬邊，焊縫成形美觀。In the light of the problems during the tank bottom plate welding of 150000 m ^ 3 double - pontoon floating roof oil tank, the paper analyzes the deformation cause of tank wall shell in welding
摘要分析了15 10 ^ 4立方公尺雙盤浮頂油罐罐底板焊接過程中出現的問題，提出焊縫收縮使得對接間隙變小是引起邊緣板變形的主要原因。Brushed stripe coating to all areas such as corners. edges, welds. small brackets, bolts, nuts. rivet - s. and interstices, before spraying application of each coat, to ensure that these areas have at least the minimum specified film thickness
在塗抹新塗層前，應刷掉所有區域的麻紋，比如各角落、邊緣、焊接處、小托架、螺釘、螺帽、鉚釘和裂縫，保證這些區域至少達到價格的最低膜厚度。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。分享友人