In recent years, with the rapid development of the world economy, more and more steel is used in ports, marine engineering and municipal engineering. In order to effectively control pipe corrosion, extend the life of steel, to ensure the safe operation of the infrastructure, the need for steel pipe corrosion protection, the most common method is to pipe surface corrosion coating anti-corrosion coatings.
Solvent-free epoxy coating excellent corrosion resistance, durability, wear resistance, mechanical strength, etc. are obvious advantages to traditional solvent-based coatings compared with the edge of the coverage is good, not easy to crack, high construction efficiency, construction better safety features, so that more and more solvent-free epoxy coatings are widely used in large-scale anti-corrosion steel pipe. Currently, solvent-free coatings for coating large steel construction mostly artificial way of painting, coating quality can not be guaranteed, low efficiency, long time needed to cure the coating, takes up a lot of space.
Site should slope grinding out original coating lap, lap area should be sanded out fresh coating surface to increase adhesion between coating and repair the original coating. After the end of the patch position grass surface treatment, should be fully clean the surface, and then follow the original paint matching system dry film thickness of the coating repair and meet the design requirements. Small area of the coating can be applied by brush patch, large area repair methods can be used to ensure the appearance of the spray coating quality. Automatic painting production line is a production line to achieve dehumidification decontamination of steel, surface treatment, pre-heating, painting and other processes continuous automated operation, and combined steel preheat and airless spraying automatic heating technology, the large steel pipes Auto Painting continuous operation, greatly reducing the labor intensity and improve production efficiency. Paint spraying and curing paint production line are completed indoors in a heated condition, a small painting by the weather, can be all-weather paint job. Heating and curing the coating film of the thermal process, a film curing time shortened to improve the cure rate and a film thickness of the deposition of large steel coating, to improve the corrosion resistance of the coating. Significantly reduce the use of solvent-free coating volatile organic solvents and the adverse effects of environmental pollution on the quality of the film, the maximum to avoid the adverse effects of the environment on the coating quality painting the system uses automatic spraying and automatic control of travel speed steel technology, the film thickness is more uniform, more smooth steel surface film.
