Hello. I have a broken thread in aluminum with a diameter of 6mm along the entire length (15mm) and it is not possible to thread to a higher diameter due to the construction. I need some smart way to get it back. I am asking for advice.
I suggest trying to slightly correct the thread with a tap and then screw in the spring, it should have a wire thickness of about 06 - 0.7 mm. Then use a screw with a thickness of 5 mm. The second way is to fill the hole with glue (epidian with metal powder, I know that it warmed up the glued material or even POXIPOL terribly. but the glue must be pressed in well, even pressed in ...
the one with the spring is modeled on the original thread repair method from some book. There, however, it was stated that there was a special set for repairing threads, it consisted of oversizing threading and screwing in a spring with a trapezoidal wire cross-section. Durability - it all depends on the tightening force of the screw. Or maybe it is possible to make a deeper hole?
you can re-thread on the 7th, I do not believe that there is not a gram of material there. Since there is no room for a different diameter, what was the old thread screwing up? Regards.
You can't go deeper because the hole is 15mm deep and the material ends (right through). This is the engine cover. As for the 7mm thread, too high costs (the tap itself costs about PLN 35 plus a die, which is on order - in the best-stocked store in Łódź) ... Besides, the screwed element is fitted with a 6mm gap ... so I would prefer to stay at 6 . Regards.
It depends on the tightening torque of this screw, the glue is unlikely to withstand tightening, it will cut it off, maybe you can weld the hole, drill and thread it, as for the springs, they are available for thread regeneration.
So far I bought epoxyDragon Metal glue (metallized two-component) ... it will compress as my friend advised me with Poxipol, I will drill and thread and we will see ... how much it is worth. On the back, it is also used to repair broken threads. What do you think about it??
It is perfect for aluminum housings of gears of subassemblies in heavy machines, unfortunately with a single hole the cost kills: The tap cannot be selected, you need to buy a special one, matched to the insert, also the holder for screwing in the inserts cannot be replaced with something. The cartridge itself costs a few zlotys per piece, so in your situation you would have to find a plant already equipped with equipment and providing such services.
Sticking a pin rarely helps - if it is on glue / polymer with aluminum filler - but aluminum in contact with oil or fuel has a tendency to soak (hard to believe how much fuel there can be in the body of the chainsaw until you approach it with the burner )
Can a pin be embedded in the body? you can try to embed it with mounting glue for fits (loctite, chester-metal, weicon) - the glued part does not have to have a thread, it is enough to degrease well (acetone) and keep the fit of 0.10 - 0.15 mm
Repairing a broken thread with glue? I wonder how the manufacturer foresaw the tightening of the screw. Do as you say, maybe something will come out of it. Good luck!! And what are the ingredients with which metal is it enriched?
find a turning shop, maybe they had a seventh tap, you don't have to buy a tap and they'll make a reduction pin for you from seventh to sixth. Maybe even cheaper than a new tap. Regards.
Indeed, HeliCoil is a fantastic thing. I did, I know. The entire repair takes approx. 2-3 minutes. (drilling, threading and screwing in the spring, which we break at the correct depth by removing the guide). The repaired thread is more durable than the original thread in aluminum.
This is epoxy glue but nothing else is written. There is no composition on the package. I have a patent ... I bought wood inserts with internal thread. 6mm. These inserts are screwed into an 8mm hole for an external screw. insert pages. Make a hole, e.g. 9mm. screw this insert on this glue ...
crap, how can you even drill 9 there, what to think about, if you do not have equipment, go to every tokaż or other private, he will do it for you in 5 minutes, let's give a hole for 8 (7 as mentioned earlier) and a pin turned (let's say from the middle) to 6mm. I doubt that he will take you more than the 30 zlotys, and he will probably give you some more. GREETINGS.
Hello. I flooded the hole with MetalBond from the American company VersaChem ... drilled ... threaded ... and it's OK. keeps well. This glue is rather low-end and still not bad. So the more expensive the thread is, the stronger it will be. Regards. I close the topic.
The discussion revolves around repairing a broken 6mm aluminum thread that is 15mm long, with constraints preventing the use of larger diameters. Various methods are proposed, including using a tap to correct the thread and inserting a spring, filling the hole with epoxy or metal-filled glue, and utilizing thread repair systems like Helicoil. The durability of these methods is debated, with suggestions to consider the tightening torque of screws and the potential for welding or reaming the hole. A user reports success using MetalBond epoxy for the repair. The conversation highlights the importance of selecting appropriate materials and techniques for effective thread restoration in aluminum components. Summary generated by the language model.
