friends who do PE pipe construction often ask: "Do you want to polish the appearance of the PE pipe hot melt machine?" In fact, this question must first distinguish what the "appearance" refers to - is it the frame and shell of the machine that do not directly participate in the hot melt, or the heating plate working surface that directly contacts the pipe? Today, let's break this problem and make it clear to avoid everyone walking into the maintenance misunderstanding.

First of all, it must be clear: the "appearance" of the hot melt machine usually refers to the frame, shell, handle and other non-working parts. The daily maintenance core of these places is "cleaning", not "polishing". For example, if the rack is stained with dust, just wipe it with a dry cloth; if there is oil stain on it, gently wipe it with a neutral cleaner and some water, and do not use strong alkaline things to corrode the paint surface. Even if there is a little oxidation and discoloration over time, or there is a slight rust on the rack, at most a layer of fine sandpaper should be gently rubbed off, but this is for beauty, not a necessary maintenance step - after all, these parts do not touch the pipe and will not affect the hot melt effect.

What is really easy to confuse is the difference between "appearance" and "key working surface". Many people regard the working surface of the heating plate as "appearance". In fact, the heating plate is the core of the hot melt machine! But the working surface of the heating plate must not be polished - because the heating plate needs to maintain a very high flatness (the error is usually controlled within 0.1mm) in order to make the two ends of the PE pipe fully fit when welded. If you use sandpaper or a sander to treat the working surface, it will destroy the flatness of the surface. If it is too stubborn, you can use a clean cotton cloth dipped in some alcohol to wipe it, and if it is heavy, it will directly cause water leakage at the interface.

How should the heating plate face be maintained? The correct way is to use a special stainless steel scraper: after each hot melt is completed, while the temperature of the heating plate has not completely dropped (about 50 ° C -60 ° C, not hot but still temperature), use a scraper to scrape off the residual PE slag on the surface in one direction. When scraping, the force should be light and do not scrape scratches. If the slag is too stubborn, you can use a clean cotton cloth dipped in some alcohol to wipe, but you must not use sharp things to scratch.

to summarize a few maintenance mistakes for you:

1. Don't take "appearance cleaning" as "sanding" - just wipe the rack clean, there is no need to polish it shiny;

2. Don't use sanding to treat the heating plate - no matter how small the scratch will affect the quality of the hot melt;

3. Don't wait for the heating plate to be completely cooled before cleaning - the slag is softer and easier to scrape off when it is hot.

Final point: The "appearance" (non-working part) of the PE pipe hot melt machine generally does not need to be polished, daily cleaning is enough; what really needs to be paid attention to is the precise cleaning of the working surface of the heating plate, which is 100 times more useful than "sanding" with the right tool. If you figure out these two points, your hot melt machine can be used longer, and the welded PE pipe interface is also more reliable.

in fact, the core logic of maintaining the hot melt machine is very simple: distinguish between "non-critical parts" and "core components", and spend energy on the place that really affects the effect - after all, what we want is a strong PE pipe interface, not a shiny machine, right?