Generally, the invalid key of mechanical parts of aluminum profile extrusion press machine plant line includes the following categories:
1. Total rupture
When the parts are subjected to external loads such as tension, compression, bending, shear and torsion, the risk cross section will produce fatigue fracture, such as the fracture of locating pin, the fracture of anchor bolt, the fracture of transmission gear root, etc.
2. Excessive residual deformation
If the in-situ stress acting on the part exceeds the strength limit of the raw material, the part may cause residual deformation, such as the bending of the transmission shaft, the deformation of the screw cap, etc.
3. Surface damage of parts (the key reason for the invalidation of parts)
The surface damage of parts is mainly erosion, damage and touch fatigue, which are all ineffective ways slowly produced with the continuous working hours, such as the damage of slide rail, the erosion of shaft sleeve, etc.
4. Invalidity caused by destroying all normal working standards
For example, the rolling bearing with liquid friction can work normally only when there is a detailed lubricating grease film; If this essential standard is destroyed, it will produce different kinds of invalidity, such as overheating of rolling bearing, invalidity of plywood and damage, and invalidity of belt pulley deviation.
Common faults and maintenance methods of aluminum profile extrusion press machine plant line; Ask; Common problems and maintenance methods of oil pump of aluminum profile extrusion press machine plant line; Ask; What is the reason for the slow starting pressure of aluminum profile extrusion press machine plant line?; Check whether the proportion of the current when the push rod enters is large. If not, it can; Check whether the reaction rate of the filling valve is fast; Ask; Push the rod until the current is increased a little, and the double pump proportional solenoid valve is fully opened; After the transfer, the front is slow and the back is fast. It is more obvious to make thick materials. Two quick release cylinders are disassembled; Answer; 1. Before feeding, the purity of raw materials shall be checked, not allowed; 3. Aluminum alloy profile extrusion machine must be in
Common faults and maintenance methods of aluminum profile extrusion press machine plant line
Ask; Common problems and maintenance methods of oil pump of aluminum profile extrusion press machine plant line
Ask; What is the reason for the slow starting pressure of aluminum profile extrusion press machine plant line?
Check whether the proportion current of the push rod is large when it enters. If not, you can increase it and try it. See if the secondary transformer is too small. Raise it moderately and try to check whether it is too early to switch to work
Check whether the reaction rate of the filling valve is fast
Ask; Push the rod in until the current is adjusted a little higher, the double pump proportional solenoid valve is fully opened, and the starting pressure is 210mp, 110mp behind the exhaust pipe of the master cylinder
After the shift, the front is slow and the back is fast. It is more obvious to make thick materials. The two quick release cylinders are disassembled and checked to ensure that the glee ring is intact without leakage. The pressure reducing valve and the two profit flow valves are all new. The independent pressure rise of the profit flow valve reflects the rapid setting of 240mp. Do I want to ask whether there are other reasons? Answer; In that case, it is likely that the filling valve is not closed fast enough. Ask; aluminum profile extrusion press machine plant line is a super heavy machine equipment for extruding aluminum alloy profiles. All extruded aluminum and aluminum alloy profile round bars have a large load and a high level of damage. How to carry out maintenance and repair of machinery and equipment?
Answer; 1. Before feeding, the purity of raw materials shall be checked, and dirty things shall not be allowed to enter the equipment to prevent damage to the equipment. 2. Usually check the lubrication level of the transmission system to prevent damage caused by untimely lubrication. 3. The aluminum alloy profile extrusion machine must meet the required heating temperature in the forming die shell and barrel before carrying out the actual operation of condiment extrusion, so as to reduce the working intensity of the equipment when extruding aluminum profile. 4. The speed ratio of extruder screw shall be gradually increased from low to high, and the high speed time in the barrel shall be less than 2-3 minutes. 5. For the international idling time of the extruder screw in the barrel, pay more attention to the operation state of the extruder main motor. 6. The motor of the extruder should pay attention to its running state anytime and anywhere, and should be prevented from being overloaded for a long time, which will reduce its service life. 7. The connection condition of each component shall be checked. The fixed anchor bolts shall be operated according to the standard and checked for looseness. 8. Each shift at each moistening position needs to check whether sufficient moistening has been carried out. 9. The rolling bearing temperature of aluminum profile extrusion press machine plant line shall not exceed 50 ℃. 10. The finished products on the extruder screw should be cleaned immediately. 11. After the completion of daily work, the residues left after extrusion molding of aluminum profile extrusion press machine plant line, packaging die shell, extruder screw and barrel shall be removed immediately.
In order to avoid common faults of aluminum profile extrusion press machine plant line, the maintenance and repair of ordinary equipment, especially in the key
Common problems include frequent shutdown (especially when there is no power) and common faults of equipment (common faults are caused due to problems of equipment). Next, let’s learn how to maintain machinery and equipment
1. Daily medical care must follow closely, and mechanical equipment must be kept clean.
2. Clean the filter screen of the gasoline pump on time and maintain the scratch plate and pump shell of the gasoline pump. Appropriately check the difference between the temperature of the gasoline pump and the new gasoline pump with a thermometer, so as to understand the relative leakage of the gasoline pump. No matter how good the sealing standard of the suction and delivery pipe is, the gasoline pump has a certain suction condition, so it should pay attention to the oil in the automobile fuel tank.
3. Maintenance is to accumulate work experience. Mobile elevators usually go to the operation console and are good at the temperature of oil circuit board of magnetic induction machinery and equipment.
4. In case of any problem, record the maintenance immediately to prevent the same common fault from happening next time, and have a certain understanding of the speed of machinery and equipment, which can prevent the probability of maintenance.
5. Be sure to keep the gear oil clean. If there is a hole on the surface of the e-mail, it can’t be repaired very well. The special preparation is that the hole on the surface of the oil return pipe penetrating into the automobile oil tank must be sealed with rubber sleeve.
6. Always check the working pressure and natural pressure of the equipment table, measure the three current quantities of the motor with an ammeter, and maintain all normal operation of the motor to prevent sudden shutdown caused by burning the motor or overweight of the motor.
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