Maintenance Instructions For Plastic Extrusion Machinery And Equipment
Lab Scale TPE Thermoplastic Elastomers
Twin-screw machine failure and treatment method
by：TENGDA
2023-01-22
1. Temperature control system
1. The temperature of a section of the host is too high
(1) Cooling system failure: 1) Check whether the solenoid valve is normal. Under normal circumstances, disassemble the solenoid valve core and blow it with an air pump;
2) Whether the water pipe or cylinder is blocked
(2) The temperature control meter fails: 1) Whether the OUT2 light of the high temperature section is on;
2) The stop valve is opened too small
(3) The solid-state relay or triac is damaged: 1) Replace the solid-state or thyristor
(4) Screw shearing is too strong: appropriately weaken
2. The temperature in a certain area of the host is too low
(1) The temperature control meter is out of order: Is the OUT1 light in the low temperature section on?
(2) The power of the heater is too small or half of the heater is damaged or short-circuited
(3) The cut-off valve is too open, disassemble the solenoid valve core and blow it with an air pump
2. Host system
1. Automatic parking
(1) Oil pump failure: check whether the motor protection switch has tripped
(2) Melt pressure alarm: check whether the melt pressure alarm value is correct; change the screen of the machine head; the temperature of the machine head is low
(3) The ammeter exceeds the limit: increase the speed of the main engine; reduce the feeding amount;
(4) Reduced speed governor failure: check the cause and reset after treatment
(5) Whether other interlocking auxiliary machines alarm
3. Feeding system
1. Automatic shutdown: Whether the governor is faulty; the speed of the feeder is too low; the material is too large; whether the feeding screw is suitable for the material
4. Lubrication system
1. The oil pump does not work: check the circuit; check the motor switch
5. Cooling system
1. The water pump does not work: check the circuit; check the motor switch
2. The cooling water is not flowing: the water pump is not working; the water volume is insufficient; whether the water pressure is between 0.2-0.4MPa.
6. Vacuum system
1. The vacuum pump does not work: check the circuit; check the motor switch
2. There is no indication on the vacuum gauge: 1) The valve is not open; 2) There is leakage; 3) The water intake of the vacuum pump is too small; 4) The vacuum chamber is blocked;
7. Hydraulic station system
1. No pressure: 1) The overflow valve core is blocked; 2) The hydraulic oil is too little; 3) The seal is damaged; 4) The oil filter is damaged;
8. Problems that may arise during machine operation
1. The gearbox produces oil foam: 1) Too much oil is added; 2) The gearbox is not ventilated
2. The plasticizing effect of the screw is not good: 1) The screw combination is too weak; 2) The screw is seriously worn; 3) The temperature is not suitable
3. Material leaking in the vacuum chamber: 1) The speed of the main engine is too fast; 2) The screw combination is unreasonable; 3) The plasticization of the material is not good;
4. Frequent broken strips: 1) The plasticization of the material is not good; 2) The material has too many impurities; 3) The vacuum degree is not enough, and there are too many pores;
5. The material is too wet: 1) Water out early; 2) The position of the blow dryer and pelletizer is moved backward; 3) Reduce the speed of the host machine and the pelletizer;
6. The material is too biased: 1) The temperature of the material is too high; 2) The air pressure of the granulator is too high;
7. Particles are of different lengths: 1) The die is blocked; 2) The temperature of the die is uneven;
8. Pipelines that are eager to be blocked: 1) The temperature of the material is too high; 2) Add a section before the tee; 3) Only one meter, and the angle of the elbow should not be too large;
9. The granulator cannot press the bar: check whether there is air pressure
10. Particles with burrs: 1) Check whether the cutting knife is flat on the die; 2) The gap between the fixed knife and the moving knife;
11. The temperature of the water tank is too high: 1) Check whether the external circulating water is flowing; 2) The position of the water tank is too low
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The trend toward using extruder machine manufacturers Application to ease plastic extruder machine manufacturers, once established, soon extended into such additional fields as extruder machine manufacturers and plastic extruder machine manufacturers.
Nanjing Tengda Machinery Co., Ltd. usees sentiment analysis to understand what their customers care about and leverage that information to reposition their products, create new content or even provide new products and services.
Application are raising the stakes of social marketing, but they also ease the sales process by providing ways for extruder machine manufacturers to effectively interact with customers.
1. The temperature of a section of the host is too high
(1) Cooling system failure: 1) Check whether the solenoid valve is normal. Under normal circumstances, disassemble the solenoid valve core and blow it with an air pump;
2) Whether the water pipe or cylinder is blocked
(2) The temperature control meter fails: 1) Whether the OUT2 light of the high temperature section is on;
2) The stop valve is opened too small
(3) The solid-state relay or triac is damaged: 1) Replace the solid-state or thyristor
(4) Screw shearing is too strong: appropriately weaken
2. The temperature in a certain area of the host is too low
(1) The temperature control meter is out of order: Is the OUT1 light in the low temperature section on?
(2) The power of the heater is too small or half of the heater is damaged or short-circuited
(3) The cut-off valve is too open, disassemble the solenoid valve core and blow it with an air pump
2. Host system
1. Automatic parking
(1) Oil pump failure: check whether the motor protection switch has tripped
(2) Melt pressure alarm: check whether the melt pressure alarm value is correct; change the screen of the machine head; the temperature of the machine head is low
(3) The ammeter exceeds the limit: increase the speed of the main engine; reduce the feeding amount;
(4) Reduced speed governor failure: check the cause and reset after treatment
(5) Whether other interlocking auxiliary machines alarm
3. Feeding system
1. Automatic shutdown: Whether the governor is faulty; the speed of the feeder is too low; the material is too large; whether the feeding screw is suitable for the material
4. Lubrication system
1. The oil pump does not work: check the circuit; check the motor switch
5. Cooling system
1. The water pump does not work: check the circuit; check the motor switch
2. The cooling water is not flowing: the water pump is not working; the water volume is insufficient; whether the water pressure is between 0.2-0.4MPa.
6. Vacuum system
1. The vacuum pump does not work: check the circuit; check the motor switch
2. There is no indication on the vacuum gauge: 1) The valve is not open; 2) There is leakage; 3) The water intake of the vacuum pump is too small; 4) The vacuum chamber is blocked;
7. Hydraulic station system
1. No pressure: 1) The overflow valve core is blocked; 2) The hydraulic oil is too little; 3) The seal is damaged; 4) The oil filter is damaged;
8. Problems that may arise during machine operation
1. The gearbox produces oil foam: 1) Too much oil is added; 2) The gearbox is not ventilated
2. The plasticizing effect of the screw is not good: 1) The screw combination is too weak; 2) The screw is seriously worn; 3) The temperature is not suitable
3. Material leaking in the vacuum chamber: 1) The speed of the main engine is too fast; 2) The screw combination is unreasonable; 3) The plasticization of the material is not good;
4. Frequent broken strips: 1) The plasticization of the material is not good; 2) The material has too many impurities; 3) The vacuum degree is not enough, and there are too many pores;
5. The material is too wet: 1) Water out early; 2) The position of the blow dryer and pelletizer is moved backward; 3) Reduce the speed of the host machine and the pelletizer;
6. The material is too biased: 1) The temperature of the material is too high; 2) The air pressure of the granulator is too high;
7. Particles are of different lengths: 1) The die is blocked; 2) The temperature of the die is uneven;
8. Pipelines that are eager to be blocked: 1) The temperature of the material is too high; 2) Add a section before the tee; 3) Only one meter, and the angle of the elbow should not be too large;
9. The granulator cannot press the bar: check whether there is air pressure
10. Particles with burrs: 1) Check whether the cutting knife is flat on the die; 2) The gap between the fixed knife and the moving knife;
11. The temperature of the water tank is too high: 1) Check whether the external circulating water is flowing; 2) The position of the water tank is too low
The use and installation of Application is compared with most other systems for managing the plastic extruder machine manufacturers effectively and no doubt Application have won the race so many times.
We believe our capacity can give you an impressive experience by using Application.
The trend toward using extruder machine manufacturers Application to ease plastic extruder machine manufacturers, once established, soon extended into such additional fields as extruder machine manufacturers and plastic extruder machine manufacturers.
Nanjing Tengda Machinery Co., Ltd. usees sentiment analysis to understand what their customers care about and leverage that information to reposition their products, create new content or even provide new products and services.
Application are raising the stakes of social marketing, but they also ease the sales process by providing ways for extruder machine manufacturers to effectively interact with customers.
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