Water-assisted laser is a manifestation of physical phenomena: light can be absorbed by the spread of water, vaporized by heat and form a plasma, which then expands and extinguishes. Followed by shock wave propagation, resulting in bubble growth and collapse. With the continuous improvement of laser technology and the continuous development of new laser technology, both stimulate the research and development of water-assist laser. We can compare the advantages and disadvantages of water-assist laser to see the feasibility and advantages of this technology Which.
Water-assisted laser processing advantages:
1, light can be transmitted through the water jet.
2, due to water restrictions, can produce more powerful plasma.
3, water convection and evaporation can take away the residue generated in the cut.
4, to be able to more effectively cool the workpiece and the residue and the discharge.
5, can use some of the material and water chemical reaction.
6, reducing the waste and some suspended particles on the pollution of the environment.
7, a higher optical breakdown than the air.
Disadvantages of water to help cut:
1, the light will be absorbed by the water and some residues in the cutting process.
2, the light will be suspended by the water surface and bubbles scattered.
3, the energy will be due to the gradual cooling of water damage.
4, the chemical reaction of materials and water may have a reaction.
5, water photolysis may lead to explosion risk.
6, need more auxiliary equipment to assist.
Pre-insulated Pipe Fabrication
Pre-insulated, pre-fabricated jacketed piping system is used for industrial and commercial applications. Pre-Insulated, pre-jacketed thermal pipe has a definite advantage over field installed insulation and jacketing. All straight sections of the factory preinsulated piping system shall be jacketed with a High Density Polyethylene (HDPE) jacket conforming to ASTM D1248,PVC jackets shall not be allowed.
All field butt joints shall be made in straight sections of pipe.here for welding polyethylene, it can use field hdpe pipe Butt Fusion Machines according to pipe range. For PE Pre-insulated pipe fabrication, It will use workshop fitting machines for bend fabrication of plastics. How it works? Firstly you need to prepare pe pipe Angle Cutting Saw and fix thin pipe on sepcial clamp, and then cut hdpe pre-insulated pipe in required angle. Then move this pipe and fix them on elbow clamps of pre-insulated fitting welding equipment. Special half heating plates positioned on top of the welding zone are used to ensure the required welding temperature, The appication of uniform welding pressure which is controlled hydraulically, ensures the quality of the weld between the sleeve and the pipe casing. The welding phases of pipe fabrication are below: 1. Approaching and preheating 2: Heating 3.Removing the heating element 4. Reaching the welding pressure 5.Welding 6. Cooling
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