Carburizing wakili, ana amfani da karfe da simintin gyaran kafa masana'antu, domin carburizing, desulfurization da sauran karin kayan. Abin da aka fi amfani da shi a masana'antar sarrafa ƙarfe da ƙarfe shine don daidaita abubuwan da ke cikin carbon da aka ƙone yayin aikin narkewar ƙarfe da ƙarfe da ƙari na abubuwan da ke ɗauke da carbon.
A cikin aikin narkar da ƙarfe da ƙarfe, galibi saboda lokacin narkewa, riƙe lokaci, lokacin zafi da sauran dalilai, asarar narkewar abubuwan carbon a cikin baƙin ƙarfe na ruwa yana ƙaruwa, yana haifar da raguwar abun cikin carbon na ƙarfe na ruwa, wanda ke haifar da lalacewa. da carbon abun ciki na ruwa baƙin ƙarfe ba zai iya kai sa ran ka'idar darajar refining. Sabili da haka, ya zama dole don ƙara samfuran carburizing don daidaita abubuwan da ke cikin carbon na ƙarfe, wanda shine mahimmancin ƙarin ƙari don samar da ƙarfe mai inganci.
Carburizing wakili bisa ga samar da albarkatun kasa za a iya raba: itace carbon, kwal carbon, coke carbon, graphite.
1. Carbon itace
2. Nau'in kwal
* General calcining coal carburizer: Yana da samfur na low ash kuma low sulfur lafiya wanka anthracite a calcination makera bayan game da 1250 ℃ high zafin jiki calcination, yafi samar a Ningxia, Inner Mongolia. Babban abun ciki na carbon shine 90-93%. An fi amfani da shi a masana'antar kera karafa, kuma ana amfani da wasu masana'antar simintin ƙarfe a cikin baƙin ƙarfe mai launin toka. Saboda ƙaƙƙarfan tsarin ƙwayoyin carbon ɗin sa, tsarin ɗaukar zafi yana jinkirin kuma lokaci yana da tsayi.
* Asphalt coking carburizer: wani samfurin kwal tar hydrogenation don samar da mai. Babban carbon ne, ƙarancin sulfur da ƙarancin nitrogen carburizer da aka fitar daga kwalta. A carbon abun ciki ne tsakanin 96-99.5%, maras tabbas abun ciki ne low, da tsarin ne m, da inji ƙarfi da sa juriya na barbashi ne in mun gwada da high, sauki graphitization.
* Metallurgical coke carburizing wakili: coking coal harbe-harbe, yawanci cupola da babban coke, ban da smelting, amma kuma amfani da karfe cajin carburizing.
3. Coke (petroleum coke) carbon
* Calcined coke carburizer: samfuri ne da aka yi da ƙaramin sulfur coke mai ɗanɗano a matsayin ɗanyen abu, wanda ake sarrafa shi a cikin tanderun ƙira a digiri 1300-1500 bayan cire danshi, rashin ƙarfi da ƙazanta. Matsakaicin abun cikin carbon ɗin sa gabaɗaya tsayayye kusan 98.5%, kuma abun cikin sulfur ɗin sa galibi bai wuce 0.5% ko 1%. Yawansa yana da ɗanɗano, ba sauƙin ruɓewa ba, kuma lokacin amfani yana da matsakaici. An fi mayar da hankali ne akan samarwa a Shandong, Liaoning, Tianjin. Saboda farashinsa da wadata a yawancin nau'ikan nau'ikan carburizing yana da fa'ida, ana amfani da kasuwa sosai.
* Graphitic petroleum coke carburizing wakili: man fetur coke a cikin graphitic smelting makera bayan 3000 digiri na high zafin jiki samar da graphitic kayayyakin, tare da azumi sha, high carbon da low sulfur abũbuwan amfãni. Abubuwan da ke cikin carbon ɗinsa sun kai kashi 98-99%, ma'aunin sulfur ya yi ƙasa da 0.05% ko 0.03%, wuraren da ake samarwa sun fi mayar da hankali a Mongoliya ta ciki, Jiangsu, Sichuan da sauransu. Wata hanya ta zo daga graphite lantarki yankan sharar gida, saboda graphite lantarki kanta bayan graphitization jiyya, da sharar kuma za a iya amfani da a matsayin carburizing wakili ga karfe niƙa.
* Semi-graphitic petroleum coke carburizer: graphitic zafin jiki bai kai matsayin graphitic carburizer ba, carbon abun ciki gabaɗaya ya fi 99.5, sulfur abun ciki ya fi graphitic carburizer, kasa 0.3%.
4. Nau'in zane
* Wakilin graphite mai kama da duniya: shine aikace-aikacen graphite mai kama da ƙasa a cikin ƙarfe da ƙarfe na narkewa ko simintin carburizing, babban yankin da yake samarwa a Hunan, shine aikace-aikacen kai tsaye na foda mai graphite, yawanci abun cikin carbon a cikin 75-80 %, ana iya tsarkakewa don ƙara abun ciki na carbon.
* Wakilin graphite na halitta: galibi don flake graphite, abun cikin carbon a cikin 65-99%, ƙarancin kwanciyar hankali, gabaɗaya ana amfani dashi a cikin injin ƙarfe.
* Wakilin carburizing mai hade: graphite foda, coke foda, man coke da sauran kayan ƙafa, ƙara ɗaure daban-daban tare da injin ana iya danna su cikin siffa, don granular sandar. Abubuwan da ke cikin carbon gabaɗaya yana tsakanin 93 da 97%, kuma abun cikin sulfur ba shi da kwanciyar hankali, gabaɗaya tsakanin 0.09 da 0.7.
Lokacin aikawa: Nuwamba-17-2022