Why are there no chamfers at the inner and outer diameters of the machine seal end face?
Thread Content
Why is no chamfering provided at the inner and outer diameters of the machine seal end face during design? Waiting for experts who know the answer to provide clarification
1； Precisely control the width of the friction pair, thereby achieving an accurate value for the end-face specific pressure of 2 ； Avoid generating axial forces that push against the sealing surface. The manufacturing process requires that the edges be sharpened during grinding, but it is not possible to sharpen them after the grinding process is completed. When installing the split-type mechanical seal for tungsten carbide and silicon carbide friction pairs, be careful not to hurt your hands
Doesn’t having chamfers make it easier to form a liquid film?
During operation, there should be no contact between the friction pairs, with a layer of liquid film in place
During operation, there should be no contact between the friction pairs, with a layer of liquid film in place
In fact, a “seal” is a component that controls leakage paths, and the way in which this control is achieved is a technique that involves various factors. For the end face that bears loads, the inner diameter and outer diameter dimensions affect the magnitude of those loads – such as the loads exerted by fluids or springs – which in turn influences the contact pressure on the end face and affects the way the load is carried. These values are key parameters for controlling leakage; if the inner and outer diameters are chamfered, it means that their values change, and this change has a series of subsequent effects.