How to repair the damaged or bent air conditioner large bulk propeller?
Air conditioner large bulk propeller - When using marine propellers, we may encounter common problems such as propeller defects, propeller bending and deformation. So how should we repair them? So let's take a look at the repair process together with the editor below!
Air conditioner large bulk propeller - When using marine propellers, we may encounter common problems such as propeller defects, propeller bending and deformation. So how should we repair them? So let's take a look at the process of repairing a large air conditioner loose cargo propeller with the editor below!
Large Container Propeller - Defects and Bubbles
Large container propeller - Polish propeller, clean welding area, dye penetrant inspection. After there are no cracks, heat the welding area to 100-150 ℃ for welding repair (the same material must be used for welding repair). After completion, use mineral wool for insulation, slowly cool down, and polish to form. The welding repair area should undergo dye penetrant testing without cracks.
Large container propeller - blade crack
30M patrol boat propeller - Use a cutting machine to cut open the crack on the propeller and remove it. After dye penetrant testing shows no cracks, heat it up to 100-150 ℃ and use the same material for welding, insulation, cooling, and then polish it into shape
30M patrol boat propeller - bent and deformed
30M patrol boat propeller - Use an extended specialized cutting tool to heat the curved part of the propeller to 700-900 ℃, and then use a G-type specialized wrench for pressure calibration. During the calibration process, keep track of the blade temperature and use an infrared thermometer to detect it. If the temperature is below 700 ℃, stop calibration and continue heating until the blade can be calibrated.
56M engineering ship propeller - after calibration, it is insulated with mineral wool and slowly cooled to room temperature. The calibration area undergoes dye penetrant testing without any defects.
56M Engineering Ship Propeller - Splicing
56M engineering ship propeller - according to the requirements, add an appropriate amount of allowance, and use the same material as the propeller to splice together. The front and back of the plate should have a 30-45 ° opening, and the front and back of the blade body should have a 30-45 ° opening. Then, heat it up to 100-150 ° C for splicing. The same material welding wire must be used. After the front welding is completed, use mineral wool to insulate it to room temperature, and then turn over the propeller blades.
Large engineering ship propeller - clean the welding root on the reverse side and perform dye penetrant testing. After there are no defects, heat it up to 100-150C. After the reverse side welding is completed, keep it at room temperature, polish and test for defects, and meet the pitch requirements. Adjust the balance on the upper balance frame.
Large engineering ship propeller - Calculate the unbalance based on diameter and weight, and if the unbalance is within the range, the static balance is qualified.
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