A brief discussion on the rolling requirements and disassembly sequence of honing tubes
Before disassembling the hydraulic cylinder of the honing pipe, the hydraulic circuit should be depressurized. Otherwise, when the oil pipe joint connected to the cylinder is loosened, the high-pressure oil in the circuit will spray out quickly. When depressurizing the hydraulic circuit, you should first loosen the handwheel or pressure regulating screw on the relief valve, etc. to unload the pressure oil, and then cut off the power supply or power source to stop the hydraulic device.
Disassembly should be carried out in order. Since the structures and sizes of each hydraulic cylinder are different, the disassembly sequence is also slightly different. Generally, the oil in both chambers of the cylinder should be drained, then the cylinder head should be disassembled, and the piston and piston rod should be disassembled. When disassembling the cylinder head of a hydraulic cylinder, relevant tools must be used for the key or snap ring of the internal key-type connection. It is prohibited to use a flat shovel. The flange-type end cover must be ejected with screws. Hammering or hard prying is not allowed. When the piston and piston rod are difficult to pull out, do not force them out. The cause should be found out before disassembly.
Before and after disassembly, efforts should be made to prevent the parts of the hydraulic cylinder from being contaminated by surrounding dust and impurities. For example, disassembly should be carried out in a clean environment as much as possible. After disassembly, it should be covered with plastic cloth instead of cotton cloth or other work cloth.
When disassembling, it should prevent damage to the piston rod threads, oil port threads, piston rod surface, cylinder liner inner wall, etc. In order to prevent slender parts such as piston rods from bending or deforming, they should be supported and balanced by spacers when placed. After the cylinder is disassembled, it is necessary to carefully inspect it to determine which parts can continue to be used, which parts can be repaired and reused, and which parts need to be replaced.
The purpose of rolling the cylinder barrel made of honed tubes is to reduceHoning tubeMicro cracks on the surface can seal the cracks and improve its strength. It should be noted that it is best to use a floating boring tool for finishing before rolling to ensure the smoothness of the hole wall before rolling, the rolling allowance and the geometric accuracy of the hole.
Disassembly should be carried out in order. Since the structures and sizes of each hydraulic cylinder are different, the disassembly sequence is also slightly different. Generally, the oil in both chambers of the cylinder should be drained, then the cylinder head should be disassembled, and the piston and piston rod should be disassembled. When disassembling the cylinder head of a hydraulic cylinder, relevant tools must be used for the key or snap ring of the internal key-type connection. It is prohibited to use a flat shovel. The flange-type end cover must be ejected with screws. Hammering or hard prying is not allowed. When the piston and piston rod are difficult to pull out, do not force them out. The cause should be found out before disassembly.
Before and after disassembly, efforts should be made to prevent the parts of the hydraulic cylinder from being contaminated by surrounding dust and impurities. For example, disassembly should be carried out in a clean environment as much as possible. After disassembly, it should be covered with plastic cloth instead of cotton cloth or other work cloth.
When disassembling, it should prevent damage to the piston rod threads, oil port threads, piston rod surface, cylinder liner inner wall, etc. In order to prevent slender parts such as piston rods from bending or deforming, they should be supported and balanced by spacers when placed. After the cylinder is disassembled, it is necessary to carefully inspect it to determine which parts can continue to be used, which parts can be repaired and reused, and which parts need to be replaced.
The purpose of rolling the cylinder barrel made of honed tubes is to reduceHoning tubeMicro cracks on the surface can seal the cracks and improve its strength. It should be noted that it is best to use a floating boring tool for finishing before rolling to ensure the smoothness of the hole wall before rolling, the rolling allowance and the geometric accuracy of the hole.