4 Operation Procedure
4.1 hot melt connection
4.1.1 Butt hot melt connection
4.1.1.1 Preparation: Use a cutting machine, flat saw or other tools to cut the pipe. The end of the pipe should be perpendicular to the axis of the pipe, and then use a clean cloth to wipe off the grease, dust, and moisture on the pipe end mill and flat plate heating mold. , Check whether the hydraulic system and circuit of the docking machine are normal and running, so that all equipment is in working condition.
4.1.1.2 "Fix the connecting pipes: remove the clamps in the frame, put the two pipes to be welded on the two sets of clamps on the left and right of the frame and fix them, activate the hydraulic driving device, record the minimum driving pressure of the clamp sliding, and then let The sliding end of the clamp returns.
4.1.1.3 Pipe end surface milling straight: Push the sliding end of the frame forward with the minimum driving pressure, so that the two ends to be welded are close to the two sides of the double-sided milling machine for milling, and then take out the milling cutter, and then drive with the smallest fixture The pressure pushes the sliding end to make the end faces of the two pipes contact after milling. Check the degree of complete contact between the axis of the two pipes and the end faces of the two pipes. It is required that the gap between the end faces of the two pipes is not more than 0.5mm, and the amount of misalignment is not more than 10% of the wall thickness.
