Sei usingakwanise kudzikisa izvo zveokisijeni kuvandudza hupenyu hwekuneta hwekubereka simbi? Mushure mekuongorora, zvinotendwa kuti chikonzero ndechekuti mushure mekunge huwandu hwe oxide inclusions hwaderedzwa, iyo yakawandisa sulfide inova chinhu chisina kunaka chinokanganisa kuneta hupenyu hwesimbi. Chete nekudzikisa zvinyorwa zveokisidhi uye sulfides panguva imwe chete, izvo zvingave zvinogona kushandiswa zvizere uye hupenyu hwekuneta hwekutakura simbi hunogona kuvandudzwa zvikuru.
Ndezvipi zvinhu zvichakanganisa hupenyu hwekuneta kwekutakura simbi? Matambudziko ari pamusoro anoongororwa sezvinotevera:
1. Mhedzisiro ye nitrides pahupenyu hwekuneta
Dzimwe nyanzvi dzakaratidza kuti kana nitrogen yawedzerwa kusimbi, chikamu chevhoriyamu che nitrides chinodzikira. Izvi zvinokonzerwa nekuderedzwa kwehuwandu hwehuwandu hwekubatanidzwa musimbi. Zvishoma ne tekinoroji, pachine nhamba yakati wandei yezvikamu zvidiki pane 0.2 mukati. Ndiko chaizvo kuvepo kweaya madiki nitride particles ane tarisiro yakananga pahupenyu hwekuneta kwekutakura simbi. Ti ndechimwe chezvinhu zvakasimba kuumba nitrides. Iine giravhiti diki chaiyo uye iri nyore kukuyangarara. Chimwe chikamu cheTi chinoramba chiri musimbi kuti iite multi-angular inclusions. Kubatanidzwa kwakadaro kungangokonzera kushushikana kwenzvimbo uye kupera simba kutsemuka, saka zvakakosha kudzora kuitika kweiyo inclusions.
Mhedzisiro yekuedza inoratidza kuti okisijeni mukati mesimbi inoderedzwa kusvika pasi pe20ppm, iyo nitrogen inowedzerwa, ukuru, rudzi uye kugoverwa kweasina-metallic inclusions inovandudzwa, uye yakagadzikana inclusions yakaderera zvikuru. Kunyange zvazvo nitride particles musimbi inowedzera, zvimedu zviduku zvikuru uye zvakagoverwa munzvimbo yakapararira pamuganhu wezviyo kana mukati mezviyo, izvo zvinova chinhu chakanaka, kuitira kuti simba uye kuoma kwesimbi inotakura zvakanyatsoenderana, uye kuoma uye simba resimbi zvinowedzerwa zvikuru. , kunyanya kuvandudza mhedzisiro yekuonana kuneta hupenyu chinangwa.
2. Mhedzisiro yeokisi pane hupenyu hwekuneta
Iyo oksijeni yemukati musimbi chinhu chakakosha chinokanganisa zvinhu. Kudzikira kweokisijeni, ndiko kunowedzera kuchena uye kurebesa hupenyu hwakayerwa. Pane hukama hwepedyo pakati pehuwandu hweokisijeni musimbi nemaokisi. Munguva yekuomeswa kwesimbi yakanyungudutswa, iyo yakanyungudika okisijeni yealuminium, calcium, silicon uye zvimwe zvinhu zvinogadzira okisijeni. Iyo oxide inclusion content ibasa reokisijeni. Sezvo huwandu hweokisijeni hunoderera, iyo oxide inclusions ichaderera; iyo nitrogen yemukati yakafanana neiyo okisijeni yemukati, uye inewo hukama hunoshanda neiyo nitride, asi nekuti iyo oxide inonyanya kupararira musimbi, inoita basa rakafanana neiyo fulcrum yecarbide. , saka haina kukanganisa kunoparadza hupenyu hwekuneta kwesimbi.
Nekuda kwekuvapo kwemaokisi, simbi inoparadza kuenderera kwesimbi matrix, uye nekuti iyo yekuwedzera coefficient yeokisi idiki pane yekuwedzera coefficient yeinotakura simbi matrix, kana ichiiswa kune alternating kushushikana, zviri nyore kuburitsa kushushikana kwepfungwa uye kuve. kwakabva simbi kuneta. Yakawanda yekushushikana kwekushushikana kunoitika pakati peokisi, point inclusions uye matrix. Apo kushushikana kunosvika kune yakakura zvakakwana kukosha, kuputika kuchaitika, izvo zvichakurumidza kuwedzera uye kuparadza. Iyo yakaderera yepurasitiki ye inclusions uye inopinza chimiro, iyo yakanyanya kushushikana yekushushikana.
3. Mhedzisiro ye sulfide pane kuneta hupenyu
Zvinenge zvese zvesarufa zviri musimbi zviripo muchimiro chesarufa. Iyo yakakwirira yesarufa yemukati musimbi, iyo yakakwirira sulfide musimbi. Zvisinei, nokuti sulfide inogona zvakanaka kukomberedzwa oxide, pesvedzero okisidhi pamusoro kuneta upenyu kunoderedzwa, saka pesvedzero nhamba inclusions pamusoro kuneta upenyu hakusi zvachose, chokuita hunhu, ukuru uye kuparadzirwa kwe the inclusions. Kunyanya kusanganisirwa kuripo, kuderera kwehupenyu hwekuneta hunofanirwa kuve, uye zvimwe zvinofurira zvinofanirwa kutariswa zvizere. Mukubereka simbi, sulfides inoparadzirwa uye inoparadzirwa muchimiro chakanaka, uye inosanganiswa ne oxide inclusions, iyo yakaoma kuziva kunyange ne metallographic nzira. Ongororo dzakasimbisa kuti pamusana pemaitiro ekutanga, kuwedzera kuwanda kweAl kune simba rakanaka pakuderedza oxides uye sulfides. Izvi zvinodaro nekuti Ca ine yakanyatsosimba yakasimba desulfurization kugona. Inclusions ine zvishoma zvishoma pane simba, asi zvakanyanya kukuvadza kune kuoma kwesimbi, uye chiyero chekukuvadza chinoenderana nesimba resimbi.
Xiao Jimei, nyanzvi inozivikanwa, yakaratidza kuti inclusions musimbi chikamu chinoputika, iyo yakakwirira chikamu chevhoriyamu, yakaderera kuoma; iyo yakakura saizi ye inclusions, iyo inokurumidza kusimba kunoderera. Nokuda kwekuoma kwekutsemuka kwekucheka, zviduku zviduku zvakasanganiswa uye zviduku zvakaparadzana zvemukati, iyo yakaoma haisi kungoderera, asi inowedzera. Kutyoka kwe cleavage kashoma kuti kuitike, zvichibva zvawedzera simba rekutsemuka kwe cleavage. Mumwe munhu akaita bvunzo yakakosha: mabheji maviri esimbi A uye B ndeemhando yesimbi imwe chete, asi zvinosanganisirwa zviri mune imwe neimwe zvakasiyana.
Mushure mekupisa kupisa, zvikwata zviviri zvesimbi A uye B zvakasvika pakusimba kwakafanana kwe95 kg / mm', uye simba regoho resimbi A uye B rakanga rakafanana. Panyaya yekurebesa uye kuderedza nzvimbo, B simbi yakadzikira zvishoma pane A simbi ichiri kugona. Mushure mekuedza kuneta (kutenderera kwekukotama), kunowanikwa kuti: Simbi ihwo hurefu hwehupenyu hune muganhu wekuneta; B chinhu chipfupi-hupenyu chine muganho wakaderera wekuneta. Kana iyo cyclic stress yesimbi sampuli yakakwira zvishoma pane yekuneta muganho weA simbi, hupenyu hweB simbi ingori 1/10 yeA simbi. Izvo zvinosanganisirwa musimbi A uye B maokisi. Maererano nehuwandu hwehuwandu hwekubatanidzwa, kuchena kwesimbi A kwakaipa kudarika kwesimbi B, asi oxide particles yesimbi A ndeyekukura kwakafanana uye yakagoverwa zvakafanana; simbi B ine mamwe makuru-particle inclusions, uye kugovera hakuna kufanana. . Izvi zvinoratidza zvizere kuti maonero aVaXiao Jimei akarurama.
Nguva yekutumira: Jul-25-2022