Hot chamber die casting machine maintenance knowledge details

As an important equipment in the field of modern metal processing, the stability and reliability of the performance of the hot chamber die casting machine are directly related to production efficiency and product quality. In order to ensure the long-term stable operation of the hot chamber die casting machine, the following is a set of detailed maintenance knowledge details:

1. Daily maintenance

1. Daily maintenance is the basis for ensuring the normal operation of the hot chamber die casting machine, and should be performed by the staff on duty once per shift.

2. Check the oil level in the oil tank: ensure that the oil level in the oil tank is more than 80%, the highest shall not be higher than the black upper limit of the oil temperature gauge, and the lowest shall not be lower than the red warning line of the oil temperature gauge.

3. Lubrication system inspection: Check whether the oil distributor of the lubrication system is intact, whether the delivery pipeline is unobstructed, and whether the amount of lubricant (usually 30# mechanical lubricant) is sufficient. For systems with automatic lubrication, ensure that the time interval of the automatic lubrication times is correctly set by the computer program, and lubricate once after the machine is powered on.
4. Pressure gauge inspection: Check whether the working pressure displayed on the pressure gauge meets the requirements of the product after starting the machine. The pressure is not allowed to exceed the maximum working pressure of the machine.
5. Cleaning work: Remove oil and dust on the surface of the oil tank, hydraulic components and moving parts, and pay special attention to the cleaning of the slide and guide column. At the same time, check whether there is oil leakage in the oil tank, various valves, oil cylinders, pipe joints, and pressure gauge connection parts of the oil pump. If there is leakage, it needs to be handled in time.
6. Temperature monitoring: Check the hydraulic oil temperature and cooling water temperature from time to time after starting the machine for a period of time. The normal oil temperature is preferably 40℃-50℃. During production, check whether the temperature display of the furnace, gooseneck, and nozzle is consistent with the set temperature. If it does not match, it needs to be checked and handled.

2. Regular maintenance
Regular maintenance is the key to extending the service life of the hot chamber die-casting machine. A reasonable maintenance cycle should be formulated according to the frequency of use and operating conditions of the equipment.
1. First-level maintenance (every three months)
Perform all the contents of daily maintenance.
Disassemble and clean the oil inlet filter in the oil tank to ensure that there are no impurities and damage on the oil screen.
Check all cylinder piston rods for scratches and bruises. If so, they need to be treated.
Tighten all the fasteners of the high-voltage terminals and kinematic pairs on the machine, especially the hinges.
Grease all the grease nozzles on the entire machine once, and pay attention to the use of high-temperature grease for the middle plate and the sliding foot.

2. Secondary maintenance (every six months)
Perform all the contents of the first-level maintenance.
Check the connection between the motor and the oil pump to ensure that there is no abnormal sound and the rotation is flexible when starting the machine.
Check whether the nitrogen pressure in the nitrogen bottle meets the requirements.
Re-adjust the steel belt tensioner on the slide to tighten the steel belt.

3. Third-level maintenance (yearly)
Perform all the contents of the second-level maintenance.
Disassemble the cylinder, clean, inspect and replace the worn parts and seals.
Clean the oil tank, filter, pipes and replace the hydraulic oil.
Disassemble and repair the overflow valve and safety valve.
Thoroughly clean the cooling water circuit and keep the cooling water unobstructed to extend the service life of the seal.
Disassemble and clean the motor bearings and refill with lubricating oil that meets the requirements.
Replace wearing parts such as safety door latch, nozzle latch, and injection latch.

3. Special maintenance
In special circumstances, such as long-term equipment downtime, harsh operating environment, or equipment failure, additional maintenance work is required.
Long-term downtime maintenance: If the equipment needs to be stopped for a long time, the pump should be shut down and the power supply of the electrical box should be cut off to prevent the electrical components from getting damp and aging. At the same time, the equipment should be started regularly to check its operating condition.
Harsh environment maintenance: When used in a humid, high-temperature or highly corrosive environment, the equipment's anti-corrosion, anti-rust and moisture-proof work should be strengthened. Regularly check whether the electrical circuit is damaged, aged or loose, and replace or tighten it in time.
Fault handling: When the equipment fails, it should be shut down immediately and the power supply should be cut off. Troubleshoot and repair work should be carried out according to the fault phenomenon and fault code. After the repair, a trial run should be carried out to check whether the equipment's operating condition has returned to normal.

4. Maintenance records and file management
In order to ensure the continuity and traceability of the maintenance work of the hot chamber die casting machine, a maintenance file should be established to record the time, content and problems found in each maintenance. At the same time, the maintenance work should be summarized and analyzed regularly to timely discover potential problems in equipment operation and improve maintenance strategies.

In summary, the maintenance work of the hot chamber die casting machine is a systematic project that requires a combination of daily maintenance, regular maintenance and special maintenance. Through scientific and reasonable maintenance work, the long-term stable operation of the equipment can be ensured and its service life can be extended.