Imibhobho yentsimbi eshinyeneyo enodonga oluqinileyo ineengenelo ezininzi, ezinje ngobushushu obuphezulu be-oxidation ukumelana, ukuxhathisa okuqinileyo kwe-corrosion, iplastiki elungileyo, ukusebenza kakuhle kwe-welding, njl. Nangona kunjalo, ngenxa yobunzima obuphantsi kunye nokumelana nokunxiba okuphantsi kwensimbi engenasici, ukusetyenziswa kwayo kwiimeko ezininzi kuya kuthintelwa, ngakumbi kwindawo apho izinto ezininzi ezinjengomhlwa, ukunxiba, kunye nomthwalo onzima zikhona kwaye zichaphazela omnye nomnye, ubomi benkonzo. izinto zensimbi ezingenasici ziya kufinyezwa kakhulu. Ke, indlela yokunyusa ukuqina komphezulu wemibhobho yentsimbi engenasici?

Ngoku kukho indlela yokwandisa ubulukhuni bomphezulu wemibhobho enodonga olungqingqwa nge-ion nitriding ukuphucula ukuxhathisa ukunxiba kwaye ngaloo ndlela yandise ubomi bayo benkonzo. Nangona kunjalo, imibhobho ye-austenitic stainless steel ayinakuqiniswa ngokutshintshwa kwesigaba, kwaye i-ion nitriding eqhelekileyo inobushushu obuphezulu be-nitriding, obungaphezulu kwama-500 ° C. I-Chromium nitrides iya kudlula kumaleko we-nitriding, yenze i-matrix yensimbi engenasici i-chromium-imbi. Ngelixa ukuqina komphezulu kwanda kakhulu, ukuchasana kokubola komphezulu wombhobho kuya kuba buthathaka kakhulu, ngaloo ndlela kuphulukene neempawu zemibhobho yentsimbi engenasici.

Ukusetyenziswa kwezixhobo ze-nitriding ze-DC pulse ion nitriding ukunyanga imibhobho yentsimbi ye-austenitic enobushushu obuphantsi be-ion nitriding inokuphucula ubulukhuni bomphezulu wemibhobho yentsimbi enodonga olungqingqwa ngelixa igcina ukuxhathisa kokudleka kungatshintshanga, ngaloo ndlela inyusa ukuxhathisa kwayo. Xa kuthelekiswa neesampulu eziphathwe nge-ion nitriding kubushushu obuqhelekileyo be-nitriding, uthelekiso lwedatha lukwabonakala kakhulu.

Uvavanyo lwenziwe kwi-30kW DC pulse ion nitriding furnace. Iiparameters ze-DC pulse power supply are voltage adjustable 0-1000V, adjustable duty cycle 15% -85%, kunye ne-frequency 1kHz. Inkqubo yokulinganisa ubushushu ilinganiswa nge-thermometer ye-infrared IT-8. Izinto zesampulu yi-austenitic ye-316 engqingqwa yombhobho wensimbi engenasici, kunye nokwakheka kweekhemikhali yi-0.06 carbon, 19.23 chromium, 11.26 nickel, 2.67 molybdenum, 1.86 manganese, kunye nezinye ziyintsimbi. Ubungakanani besampulu yi-Φ24mm×10mm. Phambi kovavanyo, iisampulu zagutyungelwa ngesanti yamanzi ukuze zisuse amabala e-oyile, emva koko zicocwe kwaye zomiswe ngotywala, emva koko zibekwe embindini wediski yecathode kwaye zitshintshwe zibe ngaphantsi kwe-50Pa.

Ubulukhuni obuncinci bomaleko we-nitrided bunokude bufikelele ngaphezu kwe-1150HV xa i-ion nitriding yenziwa kwi-austenitic 316 yensimbi engenasici kwimibhobho edityanisiweyo kumaqondo obushushu aphantsi kunye namaqondo aqhelekileyo e-nitriding. Umaleko we-nitrided ofunyenwe yi-ion nitriding yobushushu obuphantsi buncinci kwaye unobunzima obuphezulu begradient. Emva kokushisa kwe-ion nitriding ephantsi, ukuxhatshazwa kwentsimbi ye-austenitic kunokunyuswa ngamaxesha angama-4-5, kwaye ukuxhathisa kwe-corrosion kuhlala kungatshintshi. Nangona ukuxhathisa ukunxitywa kunokongezwa ngamaxesha angama-4-5 nge-ion nitriding kwiqondo lobushushu eliqhelekileyo le-nitriding, ukuxhathisa kokubola kwemibhobho yentsimbi eshinyeneyo enodonga olungqingqwa kuya kuncitshiswa ukuya kuthi ga kwinqanaba elithile kuba i-chromium nitrides iya kudlula ngaphezulu.