Introduction
The transition coefficients of welded alloy elements refer to the degree of change of the properties of the welded alloy elements between the welded zone and the base material. It is an important physical parameter in the welding surgery. It is one of the main indicators to evaluate the quality of welding. This paper discusses the transition coefficient of welded alloy elements and its influence on welding process.
Definition and Factor Influencing the Transition Coefficients
The transition coefficients of welded alloy element refers to the degree of change of the alloy element in the welding zone and the base material, which is the effect of temperature, time, welding parameters and other factors on weldment.Generally speaking, with the increase of welding time,the transition coefficients of welded alloy element increase. This is because the rising temperature and welding time will cause the melting and flowing of the filler metal and the base metal of the weldment, making the properties of the weldment close to that of the filler metal, so the transition coefficients will increase with the increase of the welding time and temperature.
When the welding time is longer than a certain time, the transition coefficient will tend to stability. In the case of insufficient welding time,the transition coefficient of welded alloy element will be small,and the weldment’s properties may be diverse from that of the base material and the filler metal.At the same time, if the welding current or welding power is too low, then the transition coefficient of the welded alloy element is also lower. Therefore, when welding process, the welding current and welding power should be adjusted on the basis of the welding time in order to ensure the stability and appropriateness of the properties of the weldment and the transition coefficients of the welded alloy elements.
Application
The transition coefficients of welded alloy element is an important indicator to evaluate the quality of welding. It is also a key element in welding process design, especially when multiple welding processes are used.The transition coefficients of welded alloy element can indicate the microstructure and properties of the weldment, and provide important technical data for welding process design and welding procedure qualification. It can also be used to analyze the weldment’s beads, weld defects, heat affected zone and metallurgical phases, which will help to improve the welding process system design and welding process preparation.Finally, the transition coefficients can be used to compare the weldment’s performance with the base material’s performance, such as the strength and toughness of weld seam.
Conclusion
In conclusion, the transition coefficients of welded alloy elements are a very important physical parameter in the welding operation. The influence of the Welding time, current or power on the transition coefficients are discussed and summarized in this paper. The application of transition coefficients in welding process design, weldment’s microstructure and property analysis, and weldment’s performance comparison with the base material is also described. All these analysis provide a basic reference for the development of modern welding technology.
