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Sulfuric acid corrosion resistance, Fe-Ni-Cr alloy and a method of manufacturing the same excellent in intergranular corrosion resistance and surface properties
Sulfuric acid corrosion resistance, Fe-Ni-Cr alloy and a method of manufacturing the same excellent in intergranular corrosion resistance and surface properties
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机译:耐硫酸腐蚀的Fe-Ni-Cr合金及其制造方法,其耐晶间腐蚀和表面性能优异
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摘要
PROBLEM TO BE SOLVED: To provide an Fe-Ni-Cr based alloy excellent both in corrosion resistance and surface properties and a method for producing the same.;SOLUTION: There is provided a method for producing an alloy having a component composition containing, in terms of mass%, C:0.001 to 0.07%, Si:0.1 to 1.0%, Mn:0.1 to 2.0%, Ni:30 to 40%, Cr:18 to 23%, Mo:1 to 5%, Cu:1 to 5%, Nb:0.2 to 1%, Al:0.01 to 0.5%, Mg:0.0001 to 0.01%, Ca:0.0001 to 0.01% and O:0.0001 to 0.01% in which the crude molten steel of an Fe-Ni-Cr based alloy is decarburize-refined and then subjected to Cr reduction and preliminary deoxidation by adding Si and subsequently a CaO-SiO2-Al2O3-MgO-F based slag is generated by adding lime and fluorite to perform deoxidation and desulfurization and followed by adding Nb, where the nonmetallic inclusion is composed of only one or two or more of CaO-MgO-Al2O3, MgO and MgO.Al2O3.;COPYRIGHT: (C)2014,JPO&INPIT
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机译:解决的问题:提供一种在耐腐蚀性和表面性能方面均优异的Fe-Ni-Cr基合金及其制造方法。解决方案:提供了一种制造合金的方法,该合金的成分组成包括质量%,C:0.001至0.07%,Si:0.1至1.0%,Mn:0.1至2.0%,Ni:30至40%,Cr:18至23%,Mo:1至5%,Cu:1其中,Fe-Ni- Cr基合金经过脱碳精炼,然后通过添加Si,然后添加CaO-SiO 2 Sub> -Al 2 Sub> O 3 sub>进行Cr还原和初步脱氧。 Sub> -MgO-F基炉渣是通过添加石灰和萤石进行脱氧和脱硫,然后添加Nb生成的,其中非金属夹杂物仅由CaO-MgO-Al 2 < / Sub> O 3 Sub>,MgO和MgO.Al 2 Sub> O 3 Sub> .;版权:(C)2014,JPO& INPIT
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