Carving is a fairly effective combination of two parts. But over time, it collapses for various reasons. Under the influence of negative factors, the compounds relax. This can lead to serious consequences. To repair such compounds today use a special composition. It is a thread reducer. Let's look at what it is and how to use it.
Repair Methods
You can restore a torn thread by drilling a hole for a larger diameter and cutting a new one. This is a fairly effective method. But not always design features allow you to drill a hole. Among the advantages of this method are accessibility and cheapness, as well as the absence of the need for any other details. But at the same time, the size and other characteristics of the thread will change. Also, by increasing the diameter of the hole, the structure may weaken.
Along with simple reaming, a special threaded sleeve can be installed. This technology is used when it is not possible to drill a repair hole. The method is quite simple, but it differs in that the characteristics of the thread do not change in any way. But a larger diameter hole can not always be made, and the repair sleeve in the hole must be securely fixed.
There is a third, more effective, repair method that does not have significant drawbacks. A thread reducing agent is used here. These are special kits consisting of threaded inserts or metal-filled chemical products. This recovery method is good because you can use it everywhere, even when repairing a car in the field. There are several modern products for repairing threaded joints.
Today, products of such brands as Helicoil, as well as Loctite, are especially popular among specialists. There are other manufacturers who make similar kits for thread repair. But their effectiveness is much lower.
Repair of threaded joints with kits from Helicoil
Damaged threads can be repaired using various technologies, most of which require a larger hole to be drilled. But if the thread of the spark plug hole on the car engine or on the hub under the wheel bolt is broken, then in this case nothing will work out.
What to do in the case of a candle hole? You can increase the outer diameter of the thread and then insert the sleeve with the finished external and internal threads. In the second embodiment, the use of the sleeve will lead to an imbalance in the parts that rotate.
Helicoil has developed special repair inserts in various designs and configurations for the fastest repair of torn or worn threads. These sets are widely used in almost all areas, including industrial production. In large enterprises, these inserts allow you to fix a defective product due to thread defects.
The insert is made of a shaped diamond-shaped profile. The result is a calibrated thread for bilateral use. Accuracy corresponds to class 6H.
Benefits of Helicoil
Hellicol thread reducer is easy to use. The manufacturer offers a wide range of sizes as well as diameters. The company produces sets with metric or inch threads. With these kits, you can repair the holes so that their diameter remains the same.
Repair thread is characterized by high wear resistance, as well as mechanical strength. The connection is reliably protected from corrosion, as well as from high temperature exposure. The fit is very durable, and the inserts do not require additional fixation. Also, a significant advantage is the minimum cost of repair and the ability to reconnect without having to remove the part.
Helicoil Product Types
This thread reducer is a set of a tap of the appropriate size, spindle, drill, breaker lead. The kit also has several threaded inserts. They can be purchased separately if necessary.
Using these kits, you can restore
metric threads with sizes from M2 to M16 with a thread pitch of 1.5, as well as from M18 to M36 with a pitch of 1.5. The kit also includes kits for repairing inch threads of various sizes, ranging from American thread to pipe.
Repair Technology
Consider how to use a thread reducing agent. The instructions are simple and straightforward, but you should still describe the technology in detail. Repair is carried out in several stages. Installing inserts is a simple and cost-effective process. To restore a torn thread, four steps are required.
Recovering torn threads
So, first of all, drill a damaged thread to a specific diameter. Next, a new one is cut into the hole with the help of a complete tap. Then, an insert is installed in the finished hole using a spindle. The main working part of it has a special slot. This is where the pivot pin of the repair insert is installed. This insert is screwed into the hole until its very last turn goes in at ¼ of its step. Then the spindle is turned out.
Then remove the pivot pin. The first turn behind the leash has a mark at which it breaks off. To do this, hit him. If the trunnion is longer than the bolt, then the leash is not removed.
In this way, any thread can be quickly and efficiently restored. Helicoil repair kits can even be used in the field.
Lokright Products
This company is also well known for its quality and efficient products. But unlike Helicoil, the Loktayt thread reducer is a completely chemical substance. Everyone knows the thread locks of this brand.
To solve any problems with threads, the company offers anaerobic compounds. These are one-component liquid materials with varying degrees of viscosity. They are able to remain in their original state for a long time, and also quickly harden in small gaps of the parts to be joined or in the thread. In order for the liquid thread to begin to polymerize, two conditions must be met. So, the presence of metal ions is required, as well as minimal contact with air. How to use a loctite thread reducer? It is enough to apply the composition to one of the joined surfaces in such an amount that is sufficient to completely fill the repair gaps of the damaged thread.
The thread reducing agent after polymerization is a solid thermosetting plastic that has special properties. So, it steadily withstands any vibration and shock loads, the connection has good sealing, steadily withstands corrosion and other aggressive influences.
These compounds are produced in the form of a stick, inside of which a thick paste is contained. It is enough to apply the mixture to the repaired unit and after polymerization the thread will be restored.
Reviews
Let's see what those who have already tested thread reducer write. Feedback on these products is positive. With them, you can even perform complex repairs in the field. Also, threads restored by anaerobic drugs are very strong and reliable. Buyers note ease of use. The composition effectively restores threaded connections in a short period of time.