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It is processed in the main anti-rail embedded parts

Country/Region china
Company Laiwu (Shandong Province) Tianming Metallurgical Equipment Co., Ltd.
Categories Sea Fishing Nets
ICP License Issued by the Chinese Ministry
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    It is processed in the main anti-rail embedded parts

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    • product name: It is processed in the main anti-rail embedded parts
    • Added time: 2015-11-30
    • Views 9
    • Product details
    • Detailed parameters

    Corrosion-resistant alloy cast iron
    Resistant to seawater corrosion and marine atmospheric corrosion casting machining parts, representative material for STNi2CrCuRe, mainly used for coastal engineering, the Haihe gates, seaside power engineering, sewage treatment works and other needs of seawater and marine atmospheric corrosion resistance, casting workpiece urban sewage treatment as an alternative to expensive stainless steel. Seawater resistant cast metal parts, compared with stainless steel or stainless steel clad structure structure, with structural design flexibility and low-cost advantages, in recent years has been successfully applied to a large number of coastal projects.
    Brief introduction to the performance of STNi2CrCuRe corrosion resistant castings
    For seawater hydraulic project, the amount of corrosion resistant metal materials, dosage of a project may reach tens of thousands of tons, the use of advanced alloys is not realistic, but also the resource waste. Use ordinary carbon steel and cast iron is difficult to meet the actual use and design requirements; adopts the stainless steel welding steel structure matrix composite materials, because of the different materials of the electronic potential difference, often as a result of the welding part of the accelerated corrosion caused by composite buried premature failure, consider consider all material principle, balance various factors condition after, selection of low alloy seawater corrosion resistant cast iron is the best choice. In addition to reduce resistance in the direction of movement of the anode is in the development and use of low alloy cast iron cast iron with addition of Ni, Cr, Si, Cu, RE elements such as formation of low alloy corrosion resistant cast iron with Ni, Cr, Si and other elements to reduce iron phase is matrix activity towards positive potentials, so as to reduce the material corrosion rate. The addition of Cr, Si in cast iron surface to form a protective film, equivalent to increase the corrosion micro batteries. Current and reduce the corrosion. The addition of rare earth elements on the cast iron gas, removal of impurities and improve the organization, especially the grain boundary impurities, thereby improving cast iron corrosion resistance, especially resistance to intergranular corrosion. In recent years, gradually formed in STNi2CrCuRE as representative of corrosion resistant cast iron, corrosion rate of about 0.05 to 0.2mm/a, corrosion resistant level for 4 ~ 6 level, is currently the most widely used corrosion resistant cast iron materials, the corrosion resistance of the cast iron in recent years in the seawater hydraulic engineering won the a large number of, use effect is good. STNi2Cr alloy cast iron material for its excellent price by the user's consistent high praise, in recent years in coastal engineering and coastal water conservancy project has been more and more applications. In the application of up to forty projects, the follow-up found no corrosion phenomenon more than the design requirements.
    STNi2Cr alloy cast iron material has the following problems:
    1, the surface corrosion of alloy cast iron materials for a long time exposure in the air, floating a layer of rust, but does not affect the resistance to seawater corrosion of alloy cast iron material.
    2, the material is brittle material of gray cast iron matrix, in the operation of hoisting transport process such as improper embedded parts broken.
    Table 1 chemical composition of seawater corrosion resistant castings








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