ERW casing heat treatment method

    General chemical heat treatment of erw casing, such as carburizing, carbonitriding, carbon and nitrogen boron infiltration, respectively, are additional single component, two components and three components of the multi-parameter heat treatment.

    In recent years, but also the development of a number of new technology using the erw casing chemical heat treatment, such as vacuum chemical heat treatment, fluid bed chemical heat treatment, ion osmosis metal, ion implantation, laser surface alloying, etc., can improve the erw casing wear Loss of corrosion resistance and other performance. Rare earth in the application of chemical heat treatment (ie, with rare earth infiltration), can significantly improve the rate of seepage, shorten the treatment cycle, and can improve the wear resistance and corrosion resistance of the layer, which is a major feature of our country.

    In addition, the erw casing solid solution chemical heat treatment is also a noteworthy trend, Inner Mongolia Agricultural Machinery Research Institute Huang Jianhong, who developed a nitrogen martensite treatment (N * M treatment) process, which has been successfully applied to the production of erw casing. ERW casing is used to support the oil, gas shaft wall of the pipe to ensure that the drilling process and after the completion of the normal operation of the entire well. Each well according to the different drilling depth and geological conditions, to use several layers of casing. After the casing to take cement cementing, it is with the tubing, drill pipe is different, can not be reused, are a one-time consumption of materials. Therefore, the consumption of casing accounted for more than 70% of all oil wells. Casing according to the use can be divided into: duct, surface casing, technical casing.

    Check www.tjxysteel.com for more info

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