Analysis on Reason and Troubleshooting of Air Leg Rock Drill Water Needle Breaking Fault

The reason for the formation of air leg rock drill water needle fault: The center hole of the shank is not correct, the gap between the shank and the shank is too large, the water needle is too long, and the shank does not meet the standard scale.
Troubleshooting: Brazing the center of the mouth to replace the brazing filler metal; Brazing and brazing sleeve with the gap is too large, the brazing sleeve by the six sides of the size of the wear to 25mm does not meet the standard, otherwise not only the wrong broken water needle, and easy to damage the braze, should be promptly replaced; water needle too long to be repaired in time, solder does not meet the standards to be repaired according to the standard.