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焊接 | 直接二极管激光器 (DDL)
激光焊接简化了加热区域和热量的调节。因此，可提供各种加工形状，这是减少处理流程的有利方法。使用 DDL 的激光焊接是一种非接触式加热，不需要消耗性部件或材料（例如电焊接通常所需的焊条），从而有助于降低操作成本。
此外，可以维持稳定的焊接条件而不受磁场影响。
使用 DDL 进行激光焊接的优势
高质量焊接
- 采用矩形聚焦光束形状的热传导焊接，减少飞溅和缺陷
- 即使在对焊和搭焊中，材料之间的焊接也很牢固
- 由于接头面积宽，所以焊接强度高
聚焦光束形状和轮廓（示例）
・DDL（平顶光束形状）
・光纤输出激光器（高斯光束形状）
焊接过程中的热像
・DDL（热传导型）
・光纤输出激光器（贯穿孔型）
热传导型与贯穿孔型的比较
| 热传导型 | 贯穿孔型（深穿透型） | |
|---|---|---|
| 典型激光器 | DDL | CO2 激光器、光纤激光器、光纤输出激光器等 |
| 飞溅 | 少 | 多 |
| 焊缝宽度 | 宽 | 窄 |
| 气孔 | 少 | 多 |
| 间隙公差 | 宽 | 窄 |
| 铝焊接 | 可能 | 取决于铝的厚度 |
| 合适的焊接 | 需要宽焊缝的焊接和薄板焊接 | 深穿透焊接 |
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