Hot Spraying Metal Ladder Coating Process
1 steel surface treatment: thermal spray metal ladder coating
anti-corrosion process of rust and rough spray and spray zinc, spray stainless steel coating, first by the air compressor to provide sandblasting power. In the role of compressed air, will be screened with the edges and corners of the quartz sand through the barrels, hose sand gas mixture, high-speed impact on the surface of the workpiece, remove the substrate surface rust and other oxides to achieve the purpose of the substrate surface uneven.
2 thermal spray zinc: the main equipment: compressed air systems, oxygen, acetylene system, metal gas spray gun and hose and other equipment. The principle is: the compressed air in the gun as the driving force, driven by the drive device, the zinc wire through the nozzle, in the oxygen - acetylene flame heating, become a melt, by compressed air to fog into particles and spray to the workpiece , Forming a thermal sprayed zinc protective layer. As the surface of the substrate after blasting uneven heat shrinkage after the metal coating can be firmly attached to the surface of the workpiece.
3 spray stainless steel: the main equipment with the spray zinc, but the metal gas spray gun should be used in the speed gun, generally based on the high-speed gun to improve, replace some parts can be used. Working principle Ibid, but zinc, stainless steel melting point is different, it should adjust the amount of aerobic - acetylene flame.
4 coated epoxy cloud iron, closed primer, painted AC-5 chlorinated rubber aluminum powder finish. Painting method: the use of manual brush coating with air spray method. Requirements brushless marks, no blistering, no sagging, no leakage spray, the appearance of silver-gray, clean, symmetrical.