Furthermore, the effect caused by the welding groove type and configuration on the blind zoon has been investigated, and the simulated calculation has been conducted in the compute.

研究了焊缝型式和形状对盲区的影响，进行了计算机仿真计算。

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The results of experiment also show the improved groove is better than V type groove and can assure the quality of welding.

试验结果表明：改进型坡口优于V型坡口，利于保证和提高焊缝质量。

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JWT type welding type hydraulic valve testing bench, to both sides of the host frame seal disc and welding the inner hole of the valve for positioning and welding groove of the valve is sealed.

JWT型焊接式液压阀门测试台，以两边主机架上的密封盘和焊接阀门内孔为定位，焊接阀门坡口为密封。

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