Pre processing procedure

1. Self inspection of tooling sealing

The equipment automatically locks the workpiece joint, performs air tightness self-test without load, and determines whether there is air leakage in the sealing plug and pneumatic assembly; Alarm directly for abnormal tooling, prohibit entry into the workpiece for inspection, and avoid misjudging the product as unqualified due to tooling leakage.

2. Pipeline unobstructed detection

Low pressure dry air is used to blow the inner cavity of the workpiece and detect pipeline blockages, flattening, and welding blockages; Stop the machine immediately if the pipeline is not connected, and do not conduct leak detection.

3. Nitrogen high-pressure pressure resistance+pressure attenuation rough inspection

1. Fill the workpiece with dry high-pressure nitrogen gas and set the holding time;

2. The sensor monitors the pressure drop in real time, and if there is a significant pressure drop, it can be determined that the workpiece has burst or the weld seam has cracked;

3. Automatic pressure relief, sound and light alarm, direct judgment of NG, no longer entering high-precision helium detection, saving helium and equipment losses.