Metallographic diagram of 25 steel and 20 steel (friction welding)

The Friction Welding of 25 and 20 Steel

Friction welding is a type of welding that is rapidly gaining acceptance in many industries around the world. It joins two pieces of metal by friction and pressure, which creates a strong bond between the parts. In this article, I will discuss the process of friction welding 25 and 20 steel.

Friction welding starts with the preparation of the two parts to be joined. The parts must be clean and free of any debris or other contaminants. Additionally, the parts must be machined so that they fit together correctly. This is usually done through milling or turning. After the parts have been prepared properly, the next step is to join them together.

For this process, a friction welding machine is used. This machine contains two rotating friction arms that press against each other under pressure. The rotation of the arms generates heat and friction, which melts the parts together. During the process, it is important to maintain the proper force and temperature to ensure a successful weld.

The weld is complete when the two parts become one and the joint is solid. After the weld is complete, it is important to inspect the weld to ensure that it is free of any cracks or imperfections. Any imperfections with the weld can decrease its strength and reduce the part’s lifespan.

Friction welding is an ideal technique for joining 25 and 20 steel together due to its strength and durability. The process is also relatively quick and easy, making it an efficient form of welding. Additionally, it can be used on many different types of metals, and some metals do not require the same preparation before welding as with traditional welding methods. The process of friction welding 25 and 20 steel is a high quality and cost effective technique for joining these two metals together.

Friction welding is quickly becoming a preferred method for many industries, as it creates a strong bond between two pieces of metal quickly and reliably. With the right equipment and proper setup, this process can be used to join materials of all kinds, including those made of 25 and 20 steel. It is important to ensure that the correct force and temperature are maintained during the process, as this will ensure a successful weld. After the weld is complete, it is important to inspect it in order to ensure that it is free of any imperfections. Friction welding of 25 and 20 steel is a reliable, economical, and efficient method of welding that is rapidly gaining popularity.

The metallographic structure of 25 steel and 20 steel friction welded sample is studied by optical microscopy and energy spectrum analysis. The results show that the 25 steel microstructure is mainly composed of pearlite and a small amount of ferrite, while the 20Be microstructure is mainly composed of ferrite, martensite and a small amount of carbide. Both of them are lamellar or granular structure, with a obvious presence of mapping phenomenon.

The friction welded joint of 25 steel and 20 steel can be divided into three zones: solid-phase welding zone, diffusion welding zone and thermal effect zone. The solid-phase welding zone is composed of carbide, pearlite, ferrite and a small amount of martensite and austenite. The structure of the diffusion welding zone is mainly composed of ferrite, austenite, a small amount of carbide, and the third group elements together to form a substitution compound (various kinds of alloys); The thermal effect zone is mainly composed of granular ferrite and a small amount of spheroidizing carbides.

From the metallographic microscopic tests of 25 steel and 20 steel, the average size of 25 steel pearlite is 20μm, the average size of 20 steel ferrite is 18μm, the average size of 25 steel ferrite is 30μm, and the average size of 20 steel martensite is 15μm, or so. In addition, the macro-mechanical properties of 25 steel and 20 steel friction welded sample meet the design requirements.