随焊接热输入和激光功率密度的增大，焊缝截面由钉形向近X形转变。
With increase of heat input and laser power density, the cross section of the weld transformed from nail shape to near X shape.
主要研究A105钢小直径焊丝埋弧焊时，电弧电压、焊接电流和焊接热输入对焊缝成形的影响。
The effects of arc voltage, welding current and heat input on the weld appearance in submerged-arc welding(SAW) of A105 steel with small diameter welding wire were experimentally researched.
随着热输入增大，焊缝柱状晶宽度增大，焊缝中针状铁素体板条有粗化的趋势；
With the increasing of heat input, the width of columnar crystal is increased, the dimension of acicular ferrite of weld metal is increased.
结果表明，热输入对焊缝金属显微组织和力学性能性能有显著的影响。
The results reveal that heat inputs have a significant effect on microstructure and mechanical properties.
在较大焊接热输入条件下焊接，焊缝金属产生粗大先共析铁素体、过热区产生粗大粒状贝氏体，焊接接头低温冲击韧性因此降低。
The coarse primary ferrite appeared in weld metal, and coarse bainite appeared in heat-affected zone under larger heat input welding condition, which caused low...
在较大焊接热输入条件下焊接，焊缝金属产生粗大先共析铁素体、过热区产生粗大粒状贝氏体，焊接接头低温冲击韧性因此降低。
The coarse primary ferrite appeared in weld metal, and coarse bainite appeared in heat-affected zone under larger heat input welding condition, which caused low...
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