What are the key points of using a spray gun?

[Zoey]

Each spray gun must be firmly held by the operator, with the nozzle aimed at the roughened area. The distance between the gun head and the roughened surface should be 100-150mm, and the angle between the gun and the ground should generally be around 75 degrees. The operator should concentrate and sweep from left to right along the trajectory where the jet contacts the concrete surface, with slight overlap between each row of sweeping to avoid uneven results. Relevant instructions are as follows: 1. Transferring the bin: Before transferring the bin, the spray gun cable should be retracted into the vehicle compartment. The roughening machine should be transported on the bin surface using a gantry crane or other crane with a capacity of over 3 tons. 2. Specialized guidance: The lifting wire rope must be aligned correctly and not tilted, with specialized guidance and suspension. When moving to a new bin surface, the parking position should be appropriate, minimizing the number of transfers for the roughening machine. The parking location should ensure the roughening machine is stable, and the pump should be kept as level as possible.