With the development of China's CNC machine tools, threaded inserts are increasingly recognized by more and more people, it has very good processing properties, reduce the thread processing costs, improve efficiency and solve the problem of thread processing and it has become a powerful processing tool in machinery and electrical processing. Because the threaded inserts manufacturing materials are mainly cemented carbide, its processing line speeds can be up to 80 ~ 200m/min, and the speed of high-speed steel cone threaded inserts is only 10 ~ 30m/min. So the threading insert are suitable for high-speed cutting, the surface of the processing thread is also greatly improved. High hardness materials and high-temperature alloy materials, such as titanium alloys, nickel-based alloys thread processing has always been a difficult problem, mainly because of the high-speed wire cone processing the material thread, shorter tool life, while the use of carbide thread milling knife thread machining of hard materials, the effect is the ideal solution.
Advantages of Thread Inserts
As for the threaded holes with the same pitch and different diameters, if use the tap processing method, it is required to uses several tools to complete the processing, but if use the steel threaded inserts processing, it just need to use one tool then you can complete the processing. Wear tap processing thread size is less than the tolerance, you cannot continue to use, but can only be scrapped; threaded inserts wear the processing thread hole size is less than tolerance, necessary tool radius compensation adjustment by the CNC system can continue processing the size qualified threaded. Similarly, in order to obtain high-precision threaded holes, use the threaded inserts to adjust the tool radius than the production of high-precision tap much easier. For small diameter threaded processing, especially in the thread processing of high hardness materials and high-temperature materials, taps sometimes broken plug threaded holes, even the parts obsolescence; threaded inserts, tool diameter is smaller than machined hole, even if the break is not plug screw holes, very easy to remove, and will not lead to parts obsolescence. Threaded inserts, as a CNC machining thread tool, have become a widely used practical tool in many industries.
Material of Steel Thread Insert
The main material of steel threaded inserts is high-speed steel. High-speed steel is a kind of high-alloy tool steel which adds more of tungsten, molybdenum, chromium, vanadium, and other alloying elements. Having a high thermal stability, high strength (bending strength was 2 to 3 times, carbide ceramics 5 to 6 times) and toughness (compared to carbide and ceramic ten times), and certain hardness and wear resistance. Since it is easy to manufacture molded and easy to grind the sharp blade, it is commonly used to produce the complex shape of the tool. According to different uses or processes, high-speed steel can be divided into: general-purpose high-speed steel. It is widely used in the manufacture of a variety of complex tool, can be used to cut the structural steel and cast iron materials with the cutting hardness less than 250 ~ 280HBS.
The article is come from:http://machine.chillermanufacturer.net/threading-insert/threaded-inserts-introduction.htm