fusion-weld的意思|示意

The tensile test fracture area locates on weld seam, and the hardness near HAZ fusion line is the highest, away from the fusion line, the hardness declines and reach the parent metal hardness.

焊接接头的拉伸试验断裂部位在焊缝。焊接HAZ熔合线附近的硬度值最高，远离熔合线硬度降低，并逐渐接近母材金属的硬度。

The microstructure and fine structure of weld fusion zone for high strength fine grain steel were studied.

研究了高强度细晶粒碳素钢焊接接头熔合区附近的显微组织及精细结构。

And the effect of SPreading fusion of active flux on weld pool depth and arc phenomenon in A-TIG welding is also studied with properly experimental method.

采取适当的试验方法研究A- TIG焊活性剂对电弧现象及活性剂涂敷量对焊接熔深增加的作用。

According to the different product structure, butt fusion welding process and lap seam welding process are used to respectively weld left and right half shell of upper body.

上体左、右半壳直焊缝视产品结构不同，分别采用对接熔化焊和搭接缝焊工艺。

The hardness tests on welding joints prove this by showing that the hardness reduces in fusion area, and increases slightly in weld zone.

通过对焊接接头的硬度检测，发现熔合区硬度下降，焊缝区略有上升。

The results show that:under the no preheating condition, the microstructure of weld metal is columnar austenitic, and brittle martensite exists in the fusion zone and over-heated zone unavoidably.

研究结果表明：在不预热条件下，用KD286焊补钢轨，焊缝组织为柱状奥氏体组织，熔合区和过热区不可避免地产生脆硬的马氏体组织。