Besides, centering and tack welding by laser beam should be avoided as centering point and tack-welding point can influence weld quality largely.
但焊缝质量受激光对中点和点焊点的影响很大，应尽量避免采用激光对中及点焊。
According to the model of the welding position, giving a weld seam point, the weld orientation then can be resolved from the weld rotation Angle and the weld slope Angle.
根据焊缝位置的数学模型，得到了描述焊缝焊接位置的参数——焊缝转角和焊缝倾角与焊缝姿态的关系。
Weld shrinkage-induced local strain to yield point strain often several times, than the strain due to the load is much larger;
焊缝收缩诱发的局部应变时常达到屈服点应变的数倍，比荷载引起的应变大得多；
Control of the penetration and width of the back side weld was then achieved by controlling the width of an isothermal line near the melting point.
通过控制接近熔点温度的等温线宽度最终实现了对焊缝背面熔宽和熔透的控制。
First, weld the butt seams on the bottom plate of the furnace, with radiating and symmetric welding conducted from the central point.
先焊炉底板间对接焊缝，由中间往四同辐射对称焊接。
In technology research focal point should put in weld become type, weld mechanics performance and single surface weld two-sided shape root weld 3 aspects.
在工艺研究中，重点应放在焊缝成型、焊缝力学性能及单面焊双面成形根焊三个方面。
In technology research focal point should put in weld become type, weld mechanics performance and single surface weld two-sided shape root weld 3 aspects.
在工艺研究中，重点应放在焊缝成型、焊缝力学性能及单面焊双面成形根焊三个方面。
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