Then why is the processed cylinder deformed?
The cylinder is cast, and the cylinder must go through aging treatment after leaving the factory, so that the internal stress generated by the cylinder during the casting process is completely eliminated. If the aging time is short, the processed cylinder will be deformed in the future operation. The force condition of the cylinder during operation is very complicated, except for the static load such as the pressure difference between the gas inside and outside the cylinder and the weight of the parts installed in it.
It is also necessary to accept the reaction force to the static part when the steam flows out of the static blade and the acting force to the cylinder under the cold and hot state of various connecting pipes. Under the interaction of these forces, the cylinder is prone to plastic deformation to form leakage, and the load of the cylinder increases or decreases too fast, especially when the temperature changes greatly during rapid start-up, shutdown and working condition changes, incorrect way of warming the cylinder, and premature opening of the insulation layer during shutdown and maintenance, large thermal stresses and deformations occur in the cylinder and on the flange.
The cylinder generates stress in the process of mechanical processing or after repair welding, but does not eliminate the stop tempering treatment of the cylinder, resulting in large residual stress of the cylinder and permanent deformation during operation. In the process of installation or maintenance, due to the reasons of maintenance process and maintenance technology, the shrinkage clearance of inner cylinder, cylinder diaphragm, diaphragm sleeve and steam envelope sleeve is not suitable, or the shrinkage gap of the ear-hanging pressure plate is not suitable, and the great shrinkage force is generated after operation to deform the cylinder.
The used cylinder sealant is of poor quality, too much impurities or the wrong model; If there are hard impurity particles in the cylinder sealant, the sealing surface will be difficult to separate tightly, and the tightening force of the cylinder bolt is lack or the material of the bolt is unqualified. The tightness of the cylinder separation surface is mainly completed by the tightening force of the bolt. The thermal stress and high temperature generated when the unit starts and stops or increases or decreases the load will form the stress relaxation of the bolt.
A double disc grinding machine for processing bicycle disc brakes exported to foreign countries will be sealed and customs declaration procedures will be opened today in accordance with the requirements of wooden case packaging for international trade.
In order to meet the requirements of customers for intelligent double disc grinding machines and highly automated double disc grinding machines, the company has been doing in-depth exploration and research in the automatic detection of CNC double disc grinding machines.
In order to meet the requirements of connecting rod processing technology, our company has successfully developed a special double-end grinder for connecting rod, which can grind both ends of connecting rod of diesel engine, gasoline engine, motorcycle, lawn mower and miniature connecting rod.
The carbon ceramic brake disc has stable braking performance, no noise, light weight and small friction loss, and the carbon ceramic brake disc has high mechanical strength, can bear great shearing force and pressure, and can dissipate heat quickly
In order to meet the needs of the mobile phone industry for mass production of mobile phone edge strips and mobile phone middle frames, our company provided Foxconn mobile phone frame processing enterprises with a total of 16 mobile phone titanium-aluminum edge strip double-end grinders to be shipped in batches today.
In order to provide supporting services for the connecting rod production line, our company has organized and developed a set of connecting rod conveying belt for connecting rod.
We decide the quality of the pros and cons · Quality determines the user's choice
The full-automatic double disc grinding machine is mainly used for the production line of engine connecting rods to meet the requirements of diesel engine connecting rod processing technology and gasoline engine connecting rod processing technology.
The CNC double disc grinding machine can be used for high-precision grinding of two end surfaces of large-size parts such as a connecting rod of a diesel engine, a carbon ceramic plate, a carbon ceramic brake disc, a cylinder cover, a valve block, a square cylinder cover and the like, adopts reciprocating motion and plunge grinding, and mainly comprises a four-axis numerical control system;
The precision double disc grinding machine is suitable for high-precision processing of two end faces of parts with various shapes and different materials, is especially suitable for workpieces such as air conditioning compressor cylinders, silicon blocks, monocrystalline silicon wafers, cross shafts, valve blocks and the like, and can grind workpieces with large allowance and high precision requirements to finish the products at one time;
The carbon ceramic brake disc is made of special materials to solve the characteristics of wear resistance and weight reduction, but it also brings the problem of difficult processing.
By switching different fixtures, this double disc grinding machine can grind motorcycle connecting rods, mobile phone edge strips, mobile phone frames, bearings, pistons, piston pins, wool scissors blades, crankshaft bush covers, cams, sliders and many other products.
The horizontal spindle double disc grinding machine is widely used because of its strong versatility, simple fixture, easy and fast to switch varieties, high grinding efficiency, strong rigidity, good stability, small power, low grinding cost and low price.
The double disc grinding machine is suitable for grinding parts of various shapes and different materials on the upper and lower surfaces, especially parts with high requirements for verticality, flatness and parallelism, such as bearings, pistons, stamping parts, cam pieces, piston pins, rollers, ceramic parts, etc.
The through-type double disc grinding machine can be used for powerful grinding, is an ideal double disc grinding machine for grinding multi-specification products by a single machine, and is mainly used for grinding round or square and rectangular large-specification parts such as bearings, bicycle disc brakes, gear rings, notebook aluminum plates, compressor valve plates, robot gears, blades, air compressor valve plates, aluminum plates and the like.