Laser Cleaning Machine FAQs(2)
Feb 26, 2025
Laser cleaning technology is an advanced and efficient solution. However, people often have some problems when purchasing laser cleaning machines. This FAQs collects the questions that customers often ask when purchasing Laser cleaning machines, aiming to help customers better solve their questions.
5) About Surface Finish
Stainless steel containers must meet specific roughness requirements, known as "RA readings". The maximum reading allowed is RA 1.2, and the roughness must remain below a minimum. The reason for this is to ensure that food and/or liquids cannot leave residue on the rough edges before it is classified as a container being contaminated. It is also very difficult to clean these containers after use, especially if residue is found inside. I think if the beam was adjustable it would solve the problem as the customer could adjust at their discretion. The question that should usually be asked is what is the 300W. What would the finish be for the 500W and 1000W?
According to the principle of laser cleaning, the surface of the workpiece, dirt, rust or coating absorbs the laser to evaporate or peel off instantly, while the substrate hardly absorbs the laser. Therefore, when cleaning with 300W, 500W and 1000W, the overall finish of the substrate will not be much different.
The figure below is the hardness and roughness data obtained by the company's 200w laser cleaning machine for cleaning aluminum alloy
Surface hardness changes before and after cleaning
Using a micro Vickers hardness tester, the surface hardness values of the A7050FD-T74 aluminum alloy substrate before and after cleaning are measured as shown in following Table:
|
1 |
2 |
3 |
4 |
5 |
Average |
|
|
Before cleaning |
166.1HV |
163.7HV |
156.6HV |
157.8HV |
164.9HV |
161.8HV |
|
After cleaning |
160.2HV |
168.7HV |
166.2HV |
166.9HV |
161.3HV |
164.7HV |
Judging from the test results, the surface hardness of the workpieces before cleaning was 161.8HV on average, and the surface hardness increased slightly after 5 cleanings, reaching an average of 164.7HV.
Surface roughness changes before and after cleaning
Use a surface roughness measuring instrument to measure the surface roughness values of the aluminum alloy before and after cleaning. The results are as follows
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
Average |
|
|
Before cleaning |
4.61 |
4.83 |
4.96 |
5.40 |
5.01 |
4.84 |
4.92 |
5.14 |
4.99 |
4.88 |
4.96 |
|
After cleaning |
4.86 |
5.26 |
5.17 |
5.09 |
4.86 |
4.95 |
5.04 |
4.84 |
5.22 |
4.79 |
5.01 |
From the test results, the rusted surface roughness value (Ra) of the workpiece before cleaning is 4.96 on average, and the surface roughness value (Ra) after cleaning for 10 times is on average 5.01, with almost no change.
6) About Power consumption
Can you please provide the power requirements of the machine you quoted?
| Laser Source Type | Laser Wavelength | Weight | Size | Cooling Methord | Laser Power | Voltage/Frequency |
| RFL-P100M | 1064nm | 140kg | 850mm X 700mm X 880mm | Air cooling | <=800W | Single-phase 220V±10%, 50/60Hz AC |
| RFL-P200 | 1064nm | 230kg | <=1200mm X 700mm X 1200mm | Water cooling | <=2500W | Single-phase 220V±10%, 50/60Hz AC |
| RFL-P300 | 1064nm | 230kg | <=1200mm X 700mm X 1200mm | Water cooling | <=3300W | Single-phase 220V±10%, 50/60Hz AC |
| RFL-P500 | 1064nm | 300kg | <=1200mm X 900mm X 1200mm | Water cooling | <=5500W | Single-phase 220V±10%, 50/60Hz AC |
| RFL-P1000 | 1064nm | / | / | Water cooling | / | Single-phase 380V±10%, 50/60Hz AC |
7)About Cleaning of used containers
Customers need to improve the cleaning of used containers because this situation is increasing. After the product is delivered to the container, the used container is repaired and cleaned. The container is washed and cleaned vigorously, but the residue of the transported product may remain on the surface and welded joints. It must be cleaned, which is also a problem that smoke may accumulate inside the container. Can we provide a portable fume exhaust device to help solve this problem?
The laser cleaning machine provided by our company has an integrated fume exhaust device function, which can be provided according to the actual needs of customers. The cleaning exhaust assembly can adjust and fix the position, and there is a roller structure at the front end. The roller can be supported on the surface of the workpiece. The use of it during the cleaning process can effectively increase the cleaning stability; connecting the exhaust filter device can effectively provide the treatment of smoke and exhaust gas during the cleaning process, and enhance the protection of the operator. The cleaning exhaust assembly can be removed or installed at any time.
