Analysis about machinery working surface quality!!!

In most cases, the damage of mechanical equipment parts starts from the surface of parts.The purpose of studying the surface quality of machined surface is to grasp the influence of various processes on the surface quality of machined surface.In order to control the processing process, and ultimately achieve the goal of improving product quality and enhancing product performance.

Meaning of machined surface quality

Machining quality of machine parts not only refers to the machining accuracy, but also includes the quality of the machined surface. It is the representation of the surface and layer state integrity of the machined parts. After machined surface, there are always some deviations of micro-geometric shape, and the physical and mechanical properties of the surface layer also change. Therefore, the machined surface quality includes the geometric characteristics and physical and mechanical properties of the machined surface.

The micro-geometric structure of the surface layer and the properties of metal materials change after machining.

The surface of machined parts is not an ideal smooth surface. It has some surface defects such as rough ripple, cold hardness, cracks and so on.

Although there is only a very thin layer, it has a great impact on the performance of machine parts.The wear, corrosion and fatigue damage of parts start from the surface of parts. Especially the modern industrial production makes the machine develop towards the direction of precision, high speed and multi-function. Under the condition of high temperature, high pressure, high speed and high stress, any defect of the surface layer will accelerate the failure of parts.

Machining surface has a great influence on the performance of machine parts such as wear resistance, contact stiffness, fatigue strength, matching property, corrosion resistance and accuracy stability. Therefore, we must pay attention to the quality of machined surface.