Starting lever forging is a key component widely used in construction machinery, automobiles and other heavy equipment. The evaluation of wear and friction characteristics is an important aspect of the comprehensive evaluation of its performance. In this paper, the wear and friction characteristics of starting rod forgings are discussed from three aspects: wear evaluation, friction characteristics evaluation and surface topography evaluation.
First of all, wear evaluation is one of the key indicators to measure the life and durability of starter bar forging. Through laboratory tests or field tests, we can determine the wear of the starting rod forgings and analyze the wear mechanism. The commonly used wear evaluation methods include mass loss method, friction and wear test and microscope observation. The results of wear evaluation can provide reference for optimizing material selection, lubricant formulation and process parameters.
Secondly, the friction characteristic evaluation is an important means to evaluate the interaction between the starting rod forging and its friction pair. The evaluation of friction characteristics mainly includes the measurement of friction coefficient, friction pair temperature and stability. In order to accurately evaluate the friction characteristics, the common method is to use the sliding friction testing machine or the ball and disc friction testing machine to conduct experiments, to explore the friction coefficient and its change rule under different loading conditions. In addition, the temperature of the friction pair is monitored by infrared thermometer and other equipment to analyze the thermal effect in the friction process. The stability evaluation can be carried out by means of continuous test and periodic loading test.
Finally, the surface topography evaluation is one of the important indexes to analyze the wear and friction characteristics of starting rod forgings. By using scanning electron microscope (SEM) and other equipment to observe the surface morphology of starting rod forgings, parameters such as surface roughness, peak and valley height, surface hardness and so on can be obtained. These parameters are closely related to wear and friction characteristics, as surface morphology has a significant impact on wear mechanisms and lubrication states.
In summary, the evaluation of wear and friction characteristics of starting rod forgings is a complex process considering many factors. Wear evaluation, friction characteristics evaluation and surface topography evaluation are essential steps, which can provide strong support for optimizing design and improving process. Through scientific and reliable evaluation, we can improve the performance and life of starting rod forgings and ensure their reliable operation under various working conditions.
