Welding repair of Babbit alloy bearing
Babbit alloy bearing is a common bearing material in the bearing industry, which is widely used in the automobile manufacturing industry and the mechanical manufacturing industry. Babbit alloy bearing has the advantages of strong bearing capacity, good compatibility, low wear and low friction surface, but due to its characteristics, it is easy to cause wear failure after long-term use, which may lead to instability of the bearing system, and even cause serious accidents. Therefore, welding repair of Babbit alloy bearing is necessary.
The welding repair of Babbit alloy bearing includes the cleaning of the wear surface, the selection of filler materials and the welding process.
First, the cleaning of the wear surface before repair. In the selection phase of Babbit alloy bearing, the geometry and surface of the bearing must be strictly checked. After a period of time, the wear and tear may occur in some parts, so the worn surface needs to be cleaned before welding. Generally, the surface of the wear-resistant parts of the bearing should be cleaned in the dustfree workshop of the bearing factory. If the surface has dust or debris beyond a certain limit, the welding is prohibited.
In the selection of filler materials, Babbit alloy bearing is a special alloy material. According to the bearing material and application environment, different filler materials should be selected to ensure the welding effect. In the automobile manufacturing industry, the substrate material selected should be austenitic chromium nickel bearing steel, and the selection of welding filler material should choose nickel-based welding material or cobalt-based welding material according to the load and heat treatment process of the bearing parts.
In the welding repair process of Babbit alloy bearing, the choice of welding equipment also needs to be considered. Generally, it is recommended to use laser welding. Laser welding is a very advanced technology. Compared with manual welding and arc welding, laser welding has the advantages of small heat affected area, narrow fusion area, low deformation, high welding speed and high welding quality, which can fully guarantee the welding quality of Babbit alloy bearing.
In addition, when welding the Babbit alloy bearing, in order to ensure the flatness of the bearing surface, the welding edges should be ground after welding, and the gap between the bearing rings should be filled with corrosion-resistant and wear-resistant materials.
The welding repair of Babbit alloy bearing is a very important measure to restore the service life of the bearing. Proper selection of materials and controlled welding should be strictly controlled in the process of welding repair, so as to ensure that the life and safety of Babbit alloy bearing can be maintained.
