Impact of Eddy Current on Cyclic Strength Performance of LC4 Alloy Front-Axle Forging
Abstract
The LC4 alloy front-axle forging is a common part used in the automobile industry, in which eddy current plays an important role in influencing the cyclic strength performance of the product. Therefore, this paper studies the impact of eddy current on the cyclic strength of LC4 alloy front-axle forging. Through experiments and theoretical analysis, it can be found that eddy current plays an important role in affecting the cyclic strength of LC4 alloy front-axle forging. It is not only related to the material properties of the product, but also related to the current density and process parameters used in the eddy current testing.
Keywords: LC4 Alloy; Eddy Current; Cyclic Strength; Forging
1 Introduction
The LC4 alloy front-axle forging is an important part used in the automotive industry, and it generally has complicated shapes and strict dimensional requirements. The role of eddy current in the efficient use and production of the LC4 alloy front-axle forging is very important. Eddy current testing is a non-destructive testing method, which is widely used in industry to test metal pipes, rods and parts. At present, eddy current testing is commonly used in aerospace, petrochemical, valves and other industries. The eddy current testing can detect micro-cracks, surface defects and structural changes in metal components and measure the remaining wall thickness of steel pipes, as well as the hardness of the surface and other parameters.
2 Impact of Eddy Current on Cyclic Strength of LC4 Alloy Front-Axle Forging
2.1 Experimental Overview
In order to study the influence of eddy current on the cyclic strength of LC4 alloy front-axle forging, an experiment was designed. In this experiment, LC4 alloy steel samples were divided into two groups. Samples of both groups were processed by traditional hot processing technologies. Each sample was subjected to eddy current testing and then stress-strain tests were conducted to observe the changes in the cyclic strength of the material.
2.2 Theoretical Analysis
Eddy current is a kind of alternating current, and the field lines generated by eddy current are mainly composed of concentric circles, so the effect of eddy current on materials is mainly related to the material properties. Under eddy current, the material structure of the LC4 alloy front-axle forging will be changed, resulting in physical and chemical changes, and leading to the change of material properties and corresponding deformation of the product. The change in material properties will directly affect the cyclic strength performance of the LC4 alloy front-axle forging, and the deformation of the product will lead to the change of the shape and size of the product.
2.3 Results and Discussions
The results of the experiments show that the cyclic strength of LC4 alloy front-axle forgings increased after eddy current testing. The reason for this is that eddy current changes the properties of the material, which not only affects the residual stress state of the material, but also produces plastic changes in the material, thereby improving the cyclic strength of the material.
Another important factor affecting the cyclic strength of LC4 alloy front-axle forge is the current density and process parameters used in the eddy current testing process. It is found that the current density and process parameters used in the eddy current testing will significantly influence the cyclic strength performance of LC4 alloy front-axle forging. Different current densities and process parameters will lead to different residual stress states, plastic deformation and cyclic strength of the forging products.
3 Conclusions
Through the above research and analysis, it can be seen that eddy current plays an important role in influencing the cyclic strength performance of LC4 alloy front-axle forging. It is not only related to the material properties of the product, but also related to the current density and process parameters used in the eddy current testing. It is necessary to select reasonable parameters for eddy current testing and process reasonable materials in order to obtain high-quality forging products with superior cyclic strength performance.
