What is Minimum Quantity Lubrication (MQL) and Low Temperature Minimum Quantity Lubrication (CAMQL)

Minimal quantity lubrication, also called minimum quantity lubrication (MQL) in English, is a lubrication method for metal processing, that is, semi-dry cutting, which refers to combining compressed gas (air, nitrogen, carbon dioxide, etc.) with a very small amount of lubricating oil After mixing and vaporizing, micron-sized droplets are formed and sprayed into the processing area for effective lubrication. The dosage of cutting fluid is generally only 0.03 ~ 0.4L/h (the dosage of traditional wet cutting is 20 ~ 100L/min), which can effectively reduce the friction between the tool and the workpiece, the tool and the chips, prevent adhesion, and extend the tool life. life and improve the quality of the machined surface. The so-called low-temperature CA-MQL refers to mixing cold air below 0 degrees with oil and then spraying it out. The cold air can cool down more effectively, and the oil mist increases the lubrication effect, thereby achieving the purpose of cooling, cooling and lubrication, which can effectively reduce the cost of machining tools. temperature, and produce lubrication effect, improve the service life of the tool, increase the surface quality of the workpiece, and dry cutting can be truly realized.

1. Precautions before use:

1. Use clean, dry, oil-free compressed air, and install an oil and water removal filter device on the air inlet pipeline.

2. The compressed air pressure is 0.4-0.6Mpa, which is the best working pressure range of the air knife.

3. Pneumatic components used in the entire air supply pipeline, such as solenoid valves, air filters, pressure regulating valves, etc., the maximum flow rate that these pneumatic components can pass must be greater than the system's air consumption.

2. Description of double-adjustable time relay:

1- Use the double-adjustable time relay with the three-port solenoid valve to adjust the oil pumping frequency of the pneumatic pump, and the adjustment range (1 second to 30 minutes)

2- Upper oil pumping time, fixed at 0.3 seconds

3- Adjust the oil pump frequency below according to actual needs, but not less than 1 second

For example:

To set the pumping time to 0.5 seconds

Set the adjustment knob to 0.5

The time unit is set to S seconds

Dial the multiplier to X1

To set the oil pump frequency to 3 minutes

Set the adjustment knob to 0.3

The time unit is set to M minutes

Dial the multiplier to X10

3. Instructions for use of micro pneumatic pump:

1. The pneumatic pump can pump out a small amount of lubricating oil. After the pumped oil is injected into the oil and gas pipe, it is mixed with the compressed air adjusted by the air flow regulating valve, and flows continuously and stably to the lubricated area in the form of an oil film on the inner wall of the oil and gas pipe. Inside the cavity .

2. Pneumatic pumps can be used in combination according to needs. The oil volume of each pneumatic pump and the air flow of the oil and gas pipe can be adjusted independently.

3. The adjustment range of the pump oil volume is 0~0.035 ml / stroke. When the pump oil volume regulator is turned clockwise to the end, the oil volume is 0. When it is turned counterclockwise, every 10 grids of rotation is one circle, and 10 grids of oil are The amount is 0.007 ml / stroke, adjust the oil amount according to actual needs.