焊前处理

为消除LY12CZ铝合金激光焊接时焊缝中常见的气孔和裂纹缺陷，通过正交实验，优化了激光功率、扫描速度、保护气体流量等工艺参数，并采取适当的焊前预处理工艺。

Through orthogonal experiment , laser power , scanning rate and gas flow were optimized and pretreatment techniques were adopted to cancel pore and crack in laser weld of LY12CZ .

采用合理的焊前表面处理工艺、全熔透焊接可获得无气孔的焊缝。

The weld can performed free of porosity for full penetration weld when proper surface treatment processing prior to welding is employed .

PDC钻头焊前焊后处理工艺的试验研究

Study on the Treatment Technology before and after Welding of PDC Bit

用不同焊接方法，对坯料焊前作不同工艺处理，焊接成形时出现焊缝开裂，对其坯料母材及开裂焊缝作显微分析。

To do mycology analysis to the blank parent and its cracking weld for different procedure treatment to the blank before welding and occur weld crack during welding forming by different welding method .