Chemical nickel-phosphorus alloy plating process of heat radiator
A technology of electroless nickel plating and alloy technology, which is applied in the direction of liquid chemical plating, metal material coating technology, coating, etc., can solve the problems of high cost and one-time investment increase, and achieve the improvement of weld quality and long service life , control the effect of stress corrosion
Inactive Publication Date: 2010-05-12
高远新
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Problems solved by technology
Using copper pipes as water-passing parts can greatly increase the service life of the radiator and avoid water leakage caused by irregular heating systems, but the cost is expensive, which greatly increases the one-time investment
Method used
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Embodiment
[0015] 1, radiator electroless nickel-phosphorus alloy plating process of the present invention, its processing step is:
[0016] ①Inspection of radiator products and accessories-mechanical derusting-pretreatment-activation-water flushing-electroless nickel plating-phosphorus-post-treatment-inspection-spraying-finishing-finished products;
[0017] ② Inspection and finishing: After the radiator tube is made into a radiator product, it is checked that the structure of the radiator tube matrix meets the qualified product standard, and the surface is cleaned by mechanical derusting;
[0018] ③ Degreasing: According to the oily state of the surface of the plated parts, gasoline, organic solvents, and metal detergents can be used respectively: the plated parts are degreased with gasoline and then dried, and other degreasing is performed after the gasoline is completely volatilized; degreasing must be treated Plating the workpiece as a whole; then rinse it with water and immerse it i...
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The invention discloses a chemical nickel-phosphorus alloy plating process of a heat radiator, which has basically consistent uniform corrosion resistance on corrosive media, such as SO2, H2S and the like, at lower temperature. The integral chemical nickel-phosphorus alloy plating of the heat radiator can eliminate the residual stress of welding and expanded joint by more than 80%, controls the generation of stress corrosion greatly and does not generate gap corrosion basically. The heat radiator with the integral chemical nickel-phosphorus alloy plating is welded before the chemical nickel-phosphorus alloy plating, a welding process does not need to be improved, and the quality of a welding seam is fully guaranteed and is also enhanced obviously after nickel plating. After the chemical nickel-phosphorus alloy plating, the unwelded component of the heat radiator is assembled and welded, TIG or MIG welding is adopted, a nickel-phosphorus alloy plating layer is not destroyed, the corrosion resistance of a welding position is ensured, and the use performance of the heat radiator is enhanced. By carrying out chemical nickel-phosphorus alloy plating on heat radiators manufactured by common carbon steel or alloy steel and aluminum, the invention can produce heat radiators with high temperature resistance, corrosion prevention, abrasion resistance and long service life, comprising steel, aluminum and even copper heat radiators.
Description
technical field [0001] The invention relates to radiator anticorrosion treatment, in particular to a radiator electroless nickel-phosphorus alloy plating process. Background technique [0002] Radiators are widely used in heating, heat dissipation, and heat exchange in buildings in various fields such as factories, institutions, and schools. Nearly one million tons of radiators are discarded due to corrosion every year in the whole country. The main objective factor that determines the service life of the radiator is the corrosion resistance of the metal; the media that provide heat sources for the radiator are mainly water and steam, and the corrosion of steel by the oxygen contained in them and the corrosive substances contained in water and steam is currently the most important factor. A major problem plaguing radiators. It requires that the oxygen content in the water is not greater than 0.05 g / m3. Although the hot water used by the radiator is treated with oxygen prev...
Claims
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Login to View More IPC IPC(8): C23C18/36C23C18/18B23P15/26
Inventor 高洁曾平高长敏蒲强高远新
Owner 高远新