針對(duì)氣體滲碳零件質(zhì)量不穩(wěn)定問(wèn)題,使用測(cè)氧傳感器對(duì)滲碳過(guò)程進(jìn)行碳勢(shì)控制。結(jié)果
表明:單參數(shù)控制碳勢(shì)波動(dòng)大的主要原因是爐氣中的CO 含量不恒定。根據(jù)滲碳設(shè)備、工藝等具體情況,可采用單一滲劑,配制混合滲劑,稀釋劑和富化劑按比例同步增減,以及用甲醇作稀釋劑,醋酸乙脂作富化劑等4 種處理。
關(guān)鍵詞:碳勢(shì);測(cè)氧傳感器;滲碳;氧電勢(shì);控制
Abstract :Carbon tendency cont rolled by single2factor method was unstable in theory because the amount of CO was unconstant . According to carburizing devices and technologies of factories , authors solved these problems by using single penet rant ,fixing different penet rant s ,increasing or decreasing the amount s of dilu2 ent s and enrich agent s in proportion and synchronization ,and using alcohol as diluent and acetic ether as en2
rich agent s. After these measures had been taken ,the qualities of accessories had been greatly improved.
Key words :Carbon tendency ;Oxygen sensor ; Gas carburizing ;Oxygen potential ;Cont rol