Mechanical deformation of the cylinder

Cylinder in the process of using mainly the compressed gas pressure directly converted into mechanical energy, in the process of running equipment can directly do reciprocating swing or linear motion operation process, such as the inner diameter of the cylinder size can directly represent the device the size of the output force, to equipment can smoothly reciprocating sliding, the cylinder surface roughness should reach Ra. μm。 Cylinder is in use process will often fail, the cylinder is mainly used in the process of machining of the casting process, all products before leaving the factory is going through some aging treatment, so that we can make the equipment in the process of casting can produce certain elimination of internal stress, if aging time is shorter, the processing and molding of products in the later use deformation will occur in the process. Cylinder in the process of running the force situation is more complex, in addition to the need by the gas pressure difference inside and outside, but also by many other parts of the static load, to withstand the steam flow of static blades on the stationary part of the reaction force and a lot of kinds of connection pipe of cold and hot state force of product. Under the interaction of cylinder in these products can appear very plastic deformation, the deformation of it is very easy to cause leakage, products of load increase and decrease too fast, especially in the quick start and stop at the beginning of the working condition of the temperature change is too large to produce larger thermal deformation and thermal stress. Cylinder in the process of machining after its repair welding will produce some stress, but not to frontal tempering in the equipment effectively eliminated and this will directly lead to the product within larger residual stress, and then in the case of permanent deformation appeared in the process of running. Cylinder in the process of inspection or installation, because of its maintenance technology or process causes the equipment overhaul cylinder diaphragm and gland sleeve between expansion is not appropriate, this product will appear after running huge expansion force makes the cylinder deformation.