RQM series laser cleaning equipment is specially designed for the products with dense oxide layer produced by high-temperature heat treatment or welding of metal in industrial production. It is difficult to remove this difficulty in the normal cleaning process. All the metal products such as copper, steel and stainless steel produced in high-temperature operation environment have a dense oxide layer.

The laser cleaning equipment developed and produced by Shanghai runqia company has a good and efficient cleaning effect on high-temperature oxide scale, copper and rust, and uses laser shock wave to make the dirt on its surface evaporate.The use process is smoke-free and tasteless, which is an ideal environmental protection product. It can improve the production efficiency, simplify the production process, and greatly reduce the cost.

一、Process area：

Pulsed TEA-CO2 laser 10,6 μ M

Pulse laser 1,06 μ M

Principle of laser surface cleaning：

The process of pulse laser cleaning depends on the characteristics of the light pulse generated by the laser, which is based on the photophysical reaction caused by the interaction between high-intensity beam, short pulse laser and pollution layer.Its physical principle can be summarized as follows:

a)The laser beam is absorbed by the pollution layer on the surface to be treated.

b)The absorption of large energy forms a rapidly expanding plasma (highly ionized unstable gas), which produces shock wave.

c)Shock waves fragment and remove pollutants.

d)The optical pulse width must be short enough to avoid the heat accumulation which will damage the treated surface.

e)Experiments show that when there are oxides on the metal surface, the plasma is produced on the metal surface.

Plasma is produced only when the energy density is higher than the threshold value.This threshold depends on the contamination or oxide layer removed.This threshold effect is very important for effective cleaning under the condition of ensuring the safety of substrate materials.There is a second threshold for the appearance of plasma. If the energy density exceeds this threshold, the substrate material will be destroyed.In order to ensure the safety of the substrate materials, the laser parameters must be adjusted according to the situation, so that the energy density of the light pulse is strictly between two thresholds.

二、 processing method：

1. Small workpieces can be cleaned automatically. The specific cleaning time is related to the thickness of oxide skin. Please test the specific value in production.

2. Large workpieces can be designed as sliding platform for cleaning.

3. The complex parts of the workpiece can be cleaned by hand-held operation.

三、 Management and maintenance of equipment：

1. The equipment shall be operated in a closed space with certain requirements for the environment.

2. When cleaning the workpieces of different sizes, the focal length should be adjusted in time.

3. The laser parameter setting shall be in accordance with the equipment manual and shall not exceed the maximum value to prevent accidents.

4. The stability of power supply shall be ensured during the operation of the equipment.

四、labor protection：

Please wear labor protection articles, such as protective glasses and gloves, to ensure the safety of personnel.