Corresponding: ① Select an appropriate mold, and use a wrench to fix the fusion pipe section on the operating platform; Note: When fixing, tighten the fastening screws at both ends of the fixture one by one to avoid the pipe section being not level; The distance between them should not be less than the thickness of the electric cutting machine; the welding surface of each pipe section should protrude from the fixture by 40~50mm. When the pipe section is long, pay attention to the overall level. ②The hydraulic operating lever is advanced to connect the two pipe sections to each other. Visually inspect the wrong side of the welding surface, and touch the bottom half of the surface to make the two seams level. If the requirements are not met, adjust the tightening screws at both ends to make the welding seam have no misalignment and reach the level; visually inspect the seam between the two welding surfaces to ensure that there is no obvious gap in the seam; if there is, use an electric cutting machine Grinding. Place the cutting machine on the operating frame, start the cutting machine, and then another person operates the hydraulic push rod to push the pipe section against the cutting machine at the set pressure; visually inspect the welding surface for cutting until the welding surface is flush. Back up the hydraulic fixture, take out the cutting machine, and put it back on the tool rack; clean the welding surface, and use a clean cloth dipped in a small amount of acetone to clean the welding surface. Heating: Remove the heating plate that has reached the required temperature from the PPH tube tool holder. Put it on the operation frame, lean against the welding surface, push the hydraulic clamp, and make the pressure reach the required welding pressure. When the hot-melt flanging of the welding surface reaches 1mm, loosen the heating pressure relief valve, remove the heating pressure, and wait for a period of time to meet the requirements of hot-melt butt joint on the welding surface.
