The application discloses
underwater laser welding torch, including
laser head and drain cover,
laser head includes sealed shell, laser head body,
welding mechanism and
pressure balance mechanism, one end of the sealed shell is detachably connected with the drain cover, the laser head body is arranged at one end of the sealed shell away from the drain cover and extends into the sealed shell, the
welding mechanism is arranged in the laser head body, and the
pressure balance mechanism is used for balancing pressure on both sides of the sealed shell. The
underwater laser
welding torch can guarantee the sealing property of the
torch structure under water through the arrangement of the
pressure balance mechanism and the drain cover, the local dry method environment jointly created can realize stable forming under the environment of several meters of
water depth, the influence of
deep water pressure on the drainage effect and the dry method environment is effectively overcome, the requirements of no water and pure
argon protection in the weld area are realized,
underwater laser welding can be stably and reliably carried out, the welding
pool can be better protected, and the weld forming is good.