Bakin karfe mai kauri mai kauri yana da fa'idodi da yawa, irin su juriya mai zafi mai ƙarfi, juriya mai ƙarfi, filastik mai kyau, kyakkyawan aikin walda, da sauransu, kuma ana amfani da su sosai a fannonin masana'antu na farar hula daban-daban. Koyaya, saboda ƙarancin ƙarfi da ƙarancin juriya na bakin karfe, aikace-aikacen sa a lokuta da yawa za a iyakance shi, musamman a cikin yanayin da abubuwa masu yawa kamar lalata, lalacewa, da nauyi mai nauyi ya wanzu kuma suna shafar juna, rayuwar sabis Bakin karfe kayan za a rage muhimmanci. Don haka, yadda za a ƙara taurin saman bututun bakin karfe mai kauri mai kauri?

Yanzu akwai hanyar da za a ƙara taurin saman bututu masu kauri ta hanyar ion nitriding don inganta juriya don haka tsawaita rayuwar sabis. Duk da haka, bututun bakin karfe na austenitic ba za a iya ƙarfafa ta ta hanyar canjin lokaci ba, kuma ion nitriding na al'ada yana da yawan zafin jiki na nitriding, wanda ya fi 500 ° C. Chromium nitrides za su yi hazo a cikin nitriding Layer, yin bakin karfe matrix chromium-talauci. Yayin da taurin saman yana ƙaruwa sosai, juriyar lalata bututun kuma za ta yi rauni sosai, ta yadda za a rasa halayen bututun bakin karfe mai kauri.

Amfani da DC bugun jini ion nitriding kayan aiki don bi da austenitic karfe bututu tare da low-zazzabi ion nitriding iya inganta surface taurin na lokacin farin ciki-bangayen bututun karfe yayin da kiyaye lalata juriya canzawa, game da shi yana kara su lalacewa juriya. Idan aka kwatanta da samfuran nitriding ion nitriding da aka kula da su a yanayin zafin nitriding na al'ada, kwatancen bayanan shima a bayyane yake.

Anyi gwajin ne a cikin tanderun nitriding mai karfin 30kW DC. Ma'aunin wutar lantarki na bugun jini na DC shine daidaitacce irin ƙarfin lantarki 0-1000V, daidaitacce sake zagayowar aiki 15% -85%, da mitar 1kHz. Ana auna tsarin auna zafin jiki ta infrared thermometer IT-8. Kayan samfurin shine austenitic 316 mai kauri mai kauri mai kauri, bututun sinadarai shine 0.06 carbon, 19.23 chromium, 11.26 nickel, 2.67 molybdenum, 1.86 manganese, sauran kuma baƙin ƙarfe ne. Girman samfurin shine Φ24mm × 10mm. Kafin gwajin, samfuran an goge su da takarda yashi na ruwa a bi da bi don cire tabon mai, sannan a tsabtace su kuma a bushe da barasa, sannan a sanya su a tsakiyar diski na cathode kuma a kwashe su zuwa ƙasa da 50Pa.

Microhardness na nitrided Layer na iya kaiwa sama da 1150HV lokacin da ion nitriding da aka yi a kan austenitic 316 bakin karfe welded bututu a low yanayin zafi da na al'ada nitriding yanayin. Layer na nitrided da aka samu ta hanyar ƙarancin zafin jiki ion nitriding ya fi sirara kuma yana da babban taurin gradient. Bayan low-zazzabi ion nitriding, juriya na austenitic karfe za a iya ƙara da sau 4-5, kuma lalata juriya ya kasance ba canzawa. Ko da yake ana iya haɓaka juriya ta lalacewa ta sau 4-5 ta ion nitriding a yanayin zafin nitriding na al'ada, juriyar lalatawar bututun bakin karfe mai kauri na austenitic za a rage zuwa wani ɗan lokaci saboda chromium nitrides zai yi hazo a saman.