熔固孔 的英文怎麼說
中文拼音 [rónggùkǒng]
熔固孔
英文
blow hole-
Infiltration and solidification remelting of molten aluminum in a centrifugal force field
高溫鋁熔液在旋轉多孔介質內的滲透與瞬態固化和再熔過程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。Cr particles were enclosed by cr - w solid solution alloy after cr powder and w powder were sintered if the grain size of cr powder is larger than w powder. around cr particles more cr - w solute was formed with prolonging sintering time. during infiltration process, cr was dissolved and moved into the pores in w skeleton by cu liquids and made w skeleton become w - cr skeleton
粒度較大的cr粉和粒度較小的w粉混合燒結后，形成crw固溶體合金包圍cr塊的組織形貌，燒結時間越長， cr塊周圍形成的crw固溶體越多；熔滲過程中， cr被cu液溶解並轉移到w骨架之間的孔隙中， w骨架則轉變為cr - w骨架。The thermodynamic conditions of decomposition of the foaming agent tih2, homogeneous and heterogeneous nucleation in high - temperature solid and liquid, growth and movement were achieved to demonstrate the trend of pore evolvement in this paper. moreover, according to the characteristics of in - situ gas foaming, the equations of the height change of foaming samples with heating time were primarily established to study the behavior of foams and to guild the experiment processes
另外，論文通過大量的熱力學分析，得出了發泡過程中發泡劑分解以及氣孔在固液態時的均勻形核和非均勻形核、氣孔的生長和運動等熱力學條件，揭示了氣孔演化的趨勢；論文還根據內生氣源發泡的特點，初步建立了高溫熔體中氣體發泡高度隨時間變化的方程，為進一步深入的研究發泡機理奠定了一定的基礎。分享友人