Stainless steel bearing diagnosis of acoustic emission technique

Sometimes, we in order to timely diagnose the faults of the stainless steel bearing, often using acoustic emission technology to diagnose. Acoustic emission testing technology is so what? A simple introduction for you here, stainless steel bearings manufacturers. First, we need to know what is the acoustic emission? Materials caused by fracture, plastic deformation and phase transformation strain energy release quickly and stress wave produced by the phenomenon known as the acoustic emission. Acoustic emission testing technology is refers to the acoustic emission source when the release of elastic wave propagation in the structure with a large number of structure or material defect in the information, use instrument testing, recording and analysis of acoustic emission signals and the use of acoustic emission signals that acoustic emission source of a kind of technology. Diagnosis principle of this technique is: when the material under a certain force, it will produce deformation or crack propagation. According to the data access, acoustic emission technology is in 1950 by the German Kaiser ( J。 Kaiser) Begin to study, in 1964 the United States is applied to test the quality of the products, to obtain rapid development from now on. Material of the plastic deformation, martensite phase transformation, crack extension, stress corrosion cracks and welding process and splash, etc. , all audio emission phenomenon, acoustic emission signal detected, can monitor the whole process of material internal changes continuously. Therefore, acoustic emission testing is a dynamic nondestructive test method. Thinks, according to this characteristic, we can use a variety of instruments to test the stainless steel bearings, or using the acoustic emission signal analysis of acoustic emission signal, noise source, determine the stainless steel bearing failure. Using acoustic emission technology, we can for stainless steel bearing inner material after move relative to release the strain energy in the form of elastic wave, so as to determine its internal state. At present, the acoustic emission signal includes two forms, one for the sudden type, the other is continuous. The primary difference between the two is whether the signal is too dense and difficult to distinguish. Emergency type of acoustic emission signal is different from the background noise pulse, can separate in time; Continuous acoustic emission signal can be thought of as consisting of a number of smaller type emergency signal, and the signal is too dense to distinguish. When the stainless steel bearing dysfunctional problem, the two signals may appear at the same time. In general, if there is a continuous stainless steel bearing acoustic emission signal, the main reason is the daily lubrication work not well, lead to produce stainless steel bearing surface oxidation wear, resulting in a series of fault response. Above is the acoustic emission technology application in stainless steel bearing detection aspects of simple introduction, hope can help to you, bearing more information, please pay attention to website, specializing in the production of the whole series stainless steel bearings, old factory process trustworthy! Welcome to inquire!