焊熔合區 的英文怎麼說
中文拼音 [hànrónggěqū]
焊熔合區
英文
fusion-zone-
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。But there are some technical difficults for the welding of aluminium alloy such as some broken bits being easily found, a large welding distortion can happen easily, hard to distinguish the difference between the solid metal and liquid metal colour, hard to control the temperature, a lot of air holes can be seen in the welding line and so on
但是鋁合金熔化焊時的技術難點在於：焊接時易引起夾渣，焊接變形大，金屬的固態和液態的色澤不容易區別，焊接操作時控制溫度困難，容易產生氣孔等等。如果焊前清理工作不是很好，檢測氣孔往往超標。In this paper, the microstructures of the joints of aluminum - bronze surfacing on mild steel and on stainless steel are analyzed by means of sem, and the division and formation of bronze / steel joint bond are studied
藉助于電子顯微鏡技術對在低碳鋼和不銹鋼上堆焊鋁青銅的接頭的組織進行了分析，並對鋁青銅接頭熔合區的形成和區域劃分進行了探討Abstract : in this paper, the microstructures of the joints of aluminum - bronze surfacing on mild steel and on stainless steel are analyzed by means of sem, and the division and formation of bronze / steel joint bond are studied
文摘:藉助于電子顯微鏡技術對在低碳鋼和不銹鋼上堆焊鋁青銅的接頭的組織進行了分析，並對鋁青銅接頭熔合區的形成和區域劃分進行了探討分享友人