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Changsha Langfeng metallic material CO.,Ltd technical topics
  • Long-term corrosion of steel structure quality inspection

    24 Nov 2017

    Now, for the design and construction of steel structures, the quality of life system is adopted. In recent years, the government has set forth a clear life expectancy for the design and manufacture of steel structures (such as bridges). Therefore, no matter what kind of anti-corrosion technology ste...

  • Comparison of Long - term Corrosion Protection Technology for Steel Structure

    23 Nov 2017

    Large steel structures, such as bridges, hydraulic structures, towers, chemical tanks, pressure vessels and other preservatives, especially long-term preservative treatment (15-20 years) can have a variety of options. Such as hot-dip galvanized or aluminum technology, heavy duty coating technology, ...

  • Necessity of long-term preservation of steel structure engineering application

    22 Nov 2017

    So far, the corrosion of steel structures is causing huge losses to the national economies of various countries in the world. According to statistics from some industrialized countries, the annual economic losses due to the corrosion of steel structures account for about 2% to 4% of the GNP. The U.S...

  • Application of arc spraying anticorrosive technology in steel structure

    21 Nov 2017

    Due to its advantages of good mechanical properties, strong bearing capacity, easy manufacture, easy to adopt industrialized production, short construction and installation cycle and good sealing performance, the steel structure has been widely used in the national economy construction such as large...

  • Spray and spray process distinction

    17 Nov 2017

    spray coating and spray coating layer and the combination of the formation of the base metal is different, nickel-coated aluminum flame spray through the radiation heating chemical reaction occurs in the sandblasting rust Sa3, RZ> 50μm carbon steel surface micro-metallurgical Combination of the bot...

  • Metal powder flame spraying process

    16 Nov 2017

    The surface is subject to static load or low-speed sliding load, wear-resistant but the tensile strength of the coating and the substrate bonding requirements of not more than 50N / mm2 of the workpiece, the spray coating hardness HV130-350, coating thickness from 0.3 to several millimeters, sprayi...

  • Metal powder flame spraying (welding) process points

    15 Nov 2017

    This article mainly according to the author engaged in thermal spraying more than twenty years of practical experience, on the different workpiece material, coating selection, coating quality control and process points play a "pioneering" role. First, the process of choice

  • Application of Powder Spraying in Surface Treatment of Aluminum Profiles(二)

    14 Nov 2017

    Powder coating is used in powder coating, the process is used in electrostatic spraying, the use of friction spray gun, under the influence of accelerating wind, so that when the powder particles are sprayed gun body carrying a positive charge, and negative charge profiles contact, resulting Electro...

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