Hoe lang kan de PE-buis met water worden gebruikt na smeltlassen?

2025-08-18

PE-buizen zijn op grote schaal gebruikt in watervoorziening, drainage en andere gebieden vanwege hun uitstekende prestaties. Hotmelt-lassen is een van de belangrijkste manieren om PE-buizen aan te sluiten en de kwaliteit van het lassen houdt rechtstreeks verband met de veilige werking van het pijpleidingsysteem. Veel mensen zullen zich zorgen maken over een vraag na het voltooien van het hotmelt-lassen van PE-buizen: hoe lang duurt het om water te passeren?

In feite kunnen PE-buizen niet onmiddellijk water passeren na hotmelt-lassen, omdat het PE-materiaal aan de lasinterface een koel- en uithardingsproces moet ondergaan na hotmelt. Alleen wanneer de interface volledig is gekoeld en gestold om voldoende sterkte en afdichting te vormen, kan deze de druk weerstaan bij het passeren van water. Als u haast heeft om water te passeren wanneer de interface niet volledig is uitgehard, kan de druk van de waterstroom ernstige problemen veroorzaken, zoals vervorming, scheuren en zelfs lekkage van de interface, wat niet alleen het gebruik beïnvloedt, maar ook onnodige verliezen kan veroorzaken.

Dus, hoe lang moet u wachten? Deze tijd is niet vast, het wordt beïnvloed door vele factoren. Onder hen is de omgevingstemperatuur een belangrijke factor. In omgevingen met een hogere temperatuur, zoals de zomer, zal de koel- en uithardingssnelheid van de hotmelt-interface van PE-buis relatief sneller zijn; terwijl in de winter of een omgeving met lage temperaturen de koel- en uithardingstijd langer zal zijn.

Een andere sleutelfactor is de diameter van de buis. Over het algemeen geldt dat hoe groter de pijpdiameter, hoe meer materialen moeten worden gesmolten tijdens het smeltlassen en hoe groter de dwarsdoorsnede van de lasinterface, dus hoe langer de vereiste koel- en uithardingstijd. PE-buizen met een kleine diameter kunnen na het lassen enkele uren worden gekoeld om aan de wateromstandigheden te voldoen; terwijl het voor PE-buizen met een grote diameter langer, soms zelfs 24 uur of meer kan duren om ervoor te zorgen dat de interface volledig stabiel is.

Om de veiligheid te garanderen, wordt aanbevolen niet naar water te haasten nadat het smeltlassen van PE-buizen is voltooid. Het is het beste om voldoende afkoeling te geven op basis van de omgevingstemperatuur en de pijpdiameter op dat moment. In de daadwerkelijke werking wordt meestal verwezen naar relevante constructiespecificaties of empirische gegevens. Bijvoorbeeld, voor kleine en middelgrote PE-buizen in conventionele omgevingen, zullen veel professionals aanbevelen om ten minste 24 uur te wachten voordat watertesten en formeel gebruik plaatsvinden. Maar dit is slechts een algemene referentie en de specifieke situatie moet flexibel worden beoordeeld.

Bovendien moet tijdens het wachten op waterafgifte ook aandacht worden besteed aan het beschermen van de lasinterface om botsing of extrusie door externe krachten te voorkomen, om het uithardende effect en de uiteindelijke kwaliteit van de interface niet te beïnvloeden. Vóór formele waterafgifte kunnen ook uiterlijkinspectie en noodzakelijke stresstests worden uitgevoerd om ervoor te zorgen dat alle lasinterfaces voldoen aan de normen voor veilig gebruik.

In het kort, moet de watertijd na het hete smeltlassen van PE pijp uitvoerig de milieutemperatuur, pijpdiameter en andere factoren overwegen, het principe van "vrij lang dan kort" volgen, en de interface voldoende het koelen en het genezen tijd geven, om de veiligheid op lange termijn en de stabiele verrichting van PE pijpsysteem te verzekeren.


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