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Poly PEX Fittings Surface Treatment And Repair

Update:25-11-2020
Abst:

  Poly PEX fittings are affected by the environment dur […]

  Poly PEX fittings are affected by the environment during the production process, and certain defects will be formed on the pipe surface, such as rough surface or groove marks on the surface.

  If the surface of the poly PEX fittings manufacturer’s product is rough, it may be because the temperature of the head of the host is too high or too low, causing the outer surface to be rough. The core mold temperature is too low and the body temperature is too low, which easily causes the inner surface to be rough. The cooling water temperature is too high and the surface is rough. Lower the cooling water temperature. The better cooling water temperature for PP-R is 20-30 degrees Celsius. In this case, the manufacturer of poly PEX fittings should check the waterway for blockage and insufficient water pressure, check the heating ring for damage, check the performance of the raw material, consult the raw material supplier, and clean the mold core temperature if it is higher than the die area To adjust the temperature, open the core thermostat, check and clean the mold for impurities.

  If there are groove marks on the surface of the pipe, the poly PEX fittings manufacturer should check and adjust the sizing sleeve water curtain, equalize the pressure, adjust the spray nozzle angle to cool the pipe uniformly, and check whether there are impurities in the sizing sleeve, cutting machine, etc. Objects, burrs.

  poly PEX fittings repair method:

  When the damaged part of the outer wall of the product shows a broken pipe wall or a hole less than 0.1m in length, use a scraper to completely remove the broken pipe wall or hole, clean up with cyclohexanone within 0.05m of the removed part, and brush with a plastic adhesive with good water resistance; Then remove the arc-shaped plate that is twice the damaged area from the corresponding part of the same pipe, coat the inner wall of adhesive to buckle the damaged part, and fix it with lead wire. If there are ribs on the outer wall of the pipe, remove the ribs within 0.05m around the damaged part, scrape it without ribs, and take the same method as above to remedy.

  When a local or small part of the outer wall of the product has cracks or holes within 0.02m, the water in the pipe can be drained first, and the damaged part can be cleaned with cotton yarn, and then the base surface is brushed with cyclohexanone, and then the plastic glue with good water resistance can be painted. Mixture; and remove the plates of similar shapes and sizes from the corresponding parts of the unused pipes, bond them, wrap them with geotextiles, and fix them after curing for 24 hours.

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