Compressor Overheating Fault

When the temperature exceeds the specified value at the friction points between the crankshaft and bearings, crosshead and sliding plate, packing and piston rod, it is called overheating. The consequences of overheating: one is to accelerate the wear between the friction pairs, and the other is that the excessive heat energy continuously accumulates, leading to the burning of the friction surface and causing major accidents of the machine. The main reasons for bearing overheating are: uneven fit between the bearing and the journal or small contact area; The bearing is skewed and the crankshaft is bent, the viscosity of the lubricating oil is too low, the oil circuit is blocked, and the oil pump is malfunctioning, resulting in oil cut-off, etc; During installation, there was no leveling or clearance, the main shaft and motor shaft were not aligned, and the two shafts were tilted.
Wear of bearing parts
The wear and tear of compressor transmission parts is a common problem, including bearing positions, bearing seats, bearing chambers, keyways, and threads. Traditional methods mainly rely on repair welding and brush plating spraying, but both have certain drawbacks: the thermal stress generated by repair welding at high temperatures cannot be completely eliminated, which can easily cause material damage, leading to component bending or fracture; However, brush plating is limited by the thickness of the coating and is prone to peeling, and both methods use metal to repair the metal, which cannot change the "hard to hard" relationship. Under the combined action of various forces, it will still cause re wear. Contemporary Western countries often use polymer composite materials to repair the wear and tear of compressor transmission parts. Currently, the most mature application is the American Meijiahua technology system, which has super strong adhesion, excellent compressive strength, and other comprehensive properties. It can be disassembled without machining, without the influence of welding thermal stress, and the repair thickness is not limited. At the same time, the material has the flexibility that metals do not possess, which can absorb the impact and vibration of the equipment and avoid the possibility of further wear and tear.