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The main steps of hot melt connection are:

① Material preparation: Place the pipeline or pipe fittings in a flat position and place them on the docking machine, leaving a sufficient cutting allowance of 10-20mm.

② Clamping: Select the appropriate slip fixture according to the welded pipe and fittings, clamp the pipe, and prepare for cutting.

③ Cutting: Cutting impurities and oxide layers on the end faces of welded pipe sections and fittings to ensure that the two mating end faces are flat, smooth, and free of impurities.

④ Alignment: The end faces of the two welded pipe sections should be completely aligned, and the smaller the misalignment, the better. The misalignment should not exceed 10% of the wall thickness. Otherwise, it will affect the quality of the docking.

⑤ Heating: The appropriate temperature for docking is generally between 210-230 ℃, and the heating time of the heating plate varies between winter and summer. It is best to have a melting length of 1-2mm on both ends.

⑥ Switching: Remove the heating plate and quickly allow the two hot melt end surfaces to adhere and apply pressure. To ensure the quality of the fusion joint, the shorter the switching cycle, the better.

⑦ Melting docking: It is the key to welding, and the docking process should always be carried out under melting pressure, with a rolled edge width of 2-4mm.

⑧ Cooling: Keep the docking pressure constant and allow the interface to cool slowly. The length of the cooling time should be determined by touching the curled edge with your hand and feeling no heat.

⑨ Docking completed: After cooling down, loosen the clamp, move the docking machine away, and prepare for the next interface connection again.