Oil extraction
Nickel and nickel alloys are ideal metal materials used in various harsh corrosive environments such as chemical, petroleum, non-ferrous metal smelting, high temperature, high pressure, high concentration or mixed with impurities.
Oil extraction
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Nickel and nickel alloys are ideal metal materials used in various harsh corrosive environments such as chemical, petroleum, non-ferrous metal smelting, high temperature, high pressure, high concentration or mixed with impurities. Since the standard potential of nickel is greater than that of iron, nickel-based corrosion-resistant alloys with excellent corrosion resistance can be obtained. Nickel has good mechanical properties, especially good plasticity and flexibility, and can adapt to a variety of corrosive environments. Mostly used in food processing equipment, chemical shipping containers, electrical and electronic components, caustic processing equipment, seawater corrosion resistant equipment and heat exchangers, such as valves, pumps, shafts, clamps and fasteners in chemical equipment, also commonly used in Manufacture of refrigerator parts contacting concentrated CaCl2 solutions, and pipes for power plant feedwater heaters, etc.
Nickel-based superalloys not only have good high temperature mechanical properties, but also have good corrosion resistance, and are widely used in petroleum, petrochemical, chemical and aerospace engineering. As an improvement of nickel-based material 25Cr-32Ni, MANgoo has better creep resistance, higher thermal shock resistance, and good elongation after aging. It has also been popularized in the first-stage reformer of fertilizer plant in recent years.
The wet air high pressure oxidation system is the first domestic environmental protection device used to treat waste lye. After the system was put into use for four months, its nickel-based alloy Inconel600 pipeline was severely thinned and led to rupture and leakage. Mainly due to corrosion. After taking measures such as adding waste alkali raw material filters and cleaning them regularly, expanding the diameter of the reactor outlet pipe and replacing elbows with elbows, the service life of the above nickel-based alloy pipes has been extended several times. The dominant corrosivity of Ni-based alloy 600 is illustrated.
The composition gives this alloy better corrosion resistance in oxidizing conditions than Nickel 99.2 (Alloy 200) and Nickel 99.2 (Alloy 201, low carbon). At the same time, the higher nickel content makes the alloy have good corrosion resistance in reducing conditions and alkaline solutions, and can effectively prevent chloride-iron stress corrosion cracking. Alloy 600 has good corrosion resistance in acetic acid, acetic acid, formic acid, stearic acid and other organic acids, and moderate corrosion resistance in inorganic acids. Excellent corrosion resistance in high-purity water used in primary and secondary cycles in nuclear reactors. Particularly outstanding performance is the ability to resist the corrosion of dry chlorine and hydrogen chloride, and the application temperature is up to 650 ℃. At high temperature, the alloys in the annealed and solution-treated states have good oxidation spalling resistance and high strength in air.
Shandong Titanium Nickel Special Steel Co., Ltd
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Liaocheng Hi tech Zone, Shandong Province, Liaoniu Road and the North of the Road 300 meters east of the New East Ring Road
