welding rate

In the three conditions, wire feed rate variety are within 10%, and accord with the JB/ T8748 1998, MIG/ MAG arc welding machine standard demands.

送丝速度变化率在三种情况下均小于10%，符合JB/T8748-1998，MIG/MAG弧焊机标准要求。

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In view of this situation, the welding institute of Southwest Jiaotong University successfully developed the mini-type CNC gas pressure machine, which welded joints, with high pass rate and stable quality, and received a good evaluation.

针对这种情况，西南交通大学焊接研究所成功研制了基于PLC的数控式小型气压焊轨机，焊接接头质量的合格率高而稳定，得到了很好的评价。

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The effects of process parameters such as laser power, welding speed, wire feed rate, defocusing distance, laser-wire distance, filler wire angle, shielding gas are studied in detail.

研究了工艺参数对焊缝成形质量的影响，如激光功率、焊接速度、送丝速度、离焦量、光丝间距、送丝角度、送丝方式以及保护气体等，并获得了优化的工艺参数。

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Metal cladding high rate of weld forming, welding deformation small.

金属熔敷率高,焊缝成形好, 焊接变形小.

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The results shown that the different zones of butt joints have different fatigue crack propagation rate. The average load, welding residual stress and the microstructures influenced the propagating rate of fatigue crack.

结果表明，焊接接头的不同部位疲劳裂纹扩展速率不同，平均应力、焊接残余应力、金相组织对疲劳裂纹的扩展速率都有一定的影响。

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Meanwhile , items for attention to arise once welding rate are mentioned here.

为提高焊接一次合格率,总结出若干优化措施及注意事项.

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The law of welding current and welding rate modulation progress is followed with the partition of collected keyhole voltage, which is used to solve the conflict of nonlinear affection and stability of control system.

系统软件设计中，提出了对焊接电流、焊接速度的调节按照小孔电压大小分区控制的思想，有效地解决了系统中的非线性因素影响，较好地兼顾了控制系统的调节精度与工作稳定性。

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Therefore, it is necessary to reasonably decreasing the cool rate after welding process for improving the ability of anti-fatigue crack initiation in the weld heat affected zone. 5.

因此在焊接时适当地降低热影响区的冷却速度，可以使焊接热影响区获得更优的抗疲劳裂纹萌生能力。

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The reason of lower welding qualified rate of high frequency welding spiral fin pipe is analyzed.

分析了高频焊接螺旋翅片管焊接合格率偏低的原因.

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