熔焊區 的英文怎麼說
中文拼音 [rónghànqū]
熔焊區
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。Slag, blowholes, and paint on unfused regions were observed at the welded junctions.
在焊接處看到了夾渣，氣孔及未熔透區的油漆。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。Meanwhile it retains evenness on lift force to prevent leakage of residue that is caused by installation clearance error or changes in welding criteria, flow off molten iron as well as break - over welding, so that the ideal fosion depth and finishment have been fulfilled
在需原動力的條件下，該機利用彈性夾角變化，隨著筒體轉動，使墊層焊劑始終緊貼筒體外側環向焊接區，並保持托力均勻防止因裝配間隙誤差或焊接規范變化而引起漏渣，鐵水下淌及焊穿現象，達到理想的熔深度和光潔度。If a current with proper intensity has been switched on, the goal of controlling the melting and welding dimension effectively around the crack tip can be obtained
文中給出的算例表明，適當控制通入的電流強度，可以達到有效控制裂尖熔化區尺寸以及形成焊口的目的。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During large power laser beam welding, the surface of the work - piece is melted and gasified, which is ionized and form plasma with the shielding gas on the condition of high temperature over the welded zone
在激光焊接過程中，當被焊材料受到高能激光束作用時，其表面會迅速熔化、氣化，與外加的保護氣體一起在被焊區域的上方電離形成等離子體雲。分享友人