The user should choose the corresponding abrasive belt roughness according to the actual needs, so we must pay attention when we wholesale the abrasive belt, so how should we adjust the parameter value of the roughness?
For the adjustment of the abrasive belt roughness, it should be noted that on the same part, the abrasive belt roughness parameter value of the working surface should be smaller than the roughness parameter value of the working surface, and the roughness value of the friction surface should be smaller than that of the non-friction surface.
In this case, the requirements for the matching properties of the abrasive belt will be more stable, and when the matching properties are the same, the smaller the size of the joint surface, the smaller the surface roughness value should be. For the same accuracy level, the smaller size is larger than the larger size, and the shaft ratio is smaller. The surface roughness value of the hole should be small.
The roughness of the abrasive belt is also related to the dimensional tolerance and shape tolerance, and the roughness parameters of the surface of the abrasive belt subjected to cyclic load and the parts that are prone to stress concentration are small.
Because the abrasive belt products of abrasive belt manufacturers have elastic contact characteristics, the cutting process of the abrasive cutting edge can be roughly divided into four stages: extrusion, sliding, ploughing, and cutting.
Initially, the abrasive grains are squeezed into the workpiece. Since the depth of cut is less than the radius of the arc of the abrasive belt abrasive grain tip, a large negative angle is formed, and the surface of the workpiece is only elastically deformed.
With the increase of the cutting depth, the pressure of the abrasive particles on the surface of the workpiece gradually increases, and begins to press into the workpiece, and the surface of the workpiece begins to transition from elastic deformation to plastic deformation.
The abrasive grains of the abrasive belt continue to be squeezed, the friction intensifies, the thermal stress increases sharply, and groove marks are formed on the surface of the workpiece, and the metal on both sides of the groove marks slips and protrudes.
When the cutting depth continues to increase, the pushed metal layer slips obviously, and after the pushing force exceeds the strength of the workpiece material, chips flow out from the rake face and cut away from the workpiece surface.
However, it should be noted that, with different processing materials, the proportion of the four stages of the abrasive belt abrasive cutting process in the entire grinding process is also different.
The superior grinding performance and flexible process characteristics of the abrasive belt make it have an extremely wide range of applications. The following abrasive belt manufacturers will introduce the relevant knowledge to us.
From daily life to industrial production, abrasive belt grinding is used in almost all fields, and the grinding of cloth sanding belts can grind almost all engineering materials.
In addition to the materials that can be processed by grinding wheel grinding, it can also process non-ferrous metals such as copper and aluminum and non-metallic soft materials such as wood, leather and plastic, especially the "cold" grinding effect of abrasive belt grinding, which makes It shows unique advantages when processing heat-resistant and difficult-to-grind materials.
In addition, the grinding of cloth sanding belts can also process workpieces of various shapes with high surface quality and high precision requirements.
Therefore, the application forms of abrasive belt grinding are various, and the application range is so wide that it is unmatched by any other processing method.