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在渗碳炉中由于渗碳气氛对电热元件的影响,导致加热元件渗碳,使元件不能正常工作,尤其在高碳势时,这种现象更为严重。因此,长期以来如何保证电热元件在渗碳气氛中既能长期可靠地进行工作,又能高效地发挥热效作用是渗碳炉长期以来寻求解决的一个关键性问题。在普通热处理的电加热炉中,历来采用镍铬基及铁铬铝基高电阻合金作为加热元件,由于它们在氧化性气氛中工作,在初次加热过程
In the carburizing furnace carburizing atmosphere due to the impact on the heating element, heating elements carburizing, the components can not work, especially in the high-carbon potential, this phenomenon is more serious. Therefore, for a long time how to ensure that the heating element in the carburizing atmosphere can both long-term and reliable work, but also play an effective role in thermal efficiency carburizing furnace is a long time to seek a solution to a key issue. In conventional heat treatment furnaces, nickel-chromium-based and iron-chromium-aluminum-based high-resistance alloys have traditionally been used as heating elements. Because of their work in an oxidizing atmosphere, during the primary heating process