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Technical features:

1. Use high-voltage pulse power supply to prepare the corrosion-resistant and wear-resistant DLC film on the inner wall of the pipeline

2. The diameter of 50-300mm and the length of 1-20m pipes can be processed

3. The DLC film layer can withstand 96h salt spray corrosion, the friction coefficient is less than 0.15, and the HSS bonding force is HF1

1. The film layer marks on the inner wall of the pipeline reach the film layer HF1 level, as shown in the following figure:

The film layer marks on the inner wall of the pipeline reach the film layer HF1 grade

2. The contact angle of the film layer on the inner wall of the pipeline reaches 98.772°, which meets the requirements of the hydrophobic film layer, as shown in the following figure:

The contact angle of the film layer on the inner wall of the pipe reaches 98.772°

3. The thickness of the ultra-thick film layer on the inner wall of the pipeline is as high as 41 μm, as shown in the following figure:

4. The inner wall of the pipeline is made of stainless steel grinding balls, with a load of 1000Kg, friction and wear for 18 hours, and a wear length of 6100m. Observed through a high-magnification three-dimensional microscope, the film is not damaged or fallen off. As shown below:

Pipe inner wall film friction test

5. The DLC film is deposited on the inner wall of the copper tube. After 1440h of neutral salt spray corrosion, the film does not appear any anti-corrosion phenomenon. The film layer achieves ultra-high corrosion resistance

The film layer achieves ultra-high corrosion resistance

6. The TiN film is deposited by magnetron sputtering in the tube, and the brightness Lab value is as high as more than 80

In-tube magnetron sputtering deposition of TiN film, the brightness Lab value is as high as more than 80

The thickness of the ultra-thick film layer on the inner wall of the pipeline is as high as 41μm

Characteristics 

1. Wear and erosion resistance (high hardness and low friction coefficient)

2. Corrosion resistance (corrosion resistant to seawater and petroleum)

3. Antibacterial and anti-scaling (sterilization and anti-scaling)

4. Hydrophobic and oleophobic

Oil pipeline inner wall project parameters:

  Pipe sizeCorrosion resistance

Example 2: DLC film plating on the inner wall of stainless steel pipe

Coating DLC film on the inner wall of stainless steel pipe：