Phoqelela ukuhlaziya izinyo lebhakede elisebenza ubuso kanye nokuthintana kwento embiwe, ohlelweni oluphelele lokumba ezigabeni ezahlukene zokusebenza zezimo zalo ezihlukene zokucindezeleka.Lapho ithiphu lezinyo lithinta kuqala indawo ebonakalayo, ithiphu lezinyo lebhakede lithinteka kakhulu ngenxa yesivinini salo. Izinyo lebhakede nezinto ezibonakalayo zenzeka ukunyakaza okuhlobene, kukhiqiza ingcindezi enkulu kakhulu ye-extrusion ebusweni, ngaleyo ndlela kukhiqiza amandla amakhulu okungqubuzana phakathi kwezinyo lebhakede elisebenzayo kanye nempahla. Uma impahla iyitshe eliqinile, ukhonkolo, njll., ukungqubuzana kuzoba kukhulu kakhulu. amazinyo, khetha amazinyo ebhakede Yebo kakhudlwana u-daddus uthengisa amazinyo ebhakede Ngasebenzisa namazinyo akhe ebhakede, umphumela muhle!Ingcindezi eyakhayo ebusweni obusebenzayo bangaphambili ngokusobala inkulu kunalokho okusemuva osebenzayo, futhi ubuso obusebenzayo bugugile kabi. Kungahlulelwa ukuthi ukucindezela okuhle namandla okuphikisana yizici eziyinhloko zangaphandle zemishini yokuhluleka kwamazinyo ebhakede, adlala indima enkulu enqubweni yokuhluleka.
Ukuhlaziywa kwenqubo: thatha amasampula amabili ebusweni obusebenzayo bangaphambili nangemuva ngokulandelana, futhi uwagaye aphansi ukuze ahlolwe ubulukhuni.Kutholakala ukuthi ubulukhuni besampula efanayo buhluke kakhulu, futhi ukwahlulela kokuqala ukuthi impahla ayifani.Amasampuli ayegayiwe, aphucuziwe futhi agqwalile, futhi kwatholakala ukuthi kunemingcele esobala kusampula ngayinye, kodwa imingcele yokubuka, ingxenye enkulu ye-gramu ezungezile ihlukile. kumnyama, okubonisa ukuthi ucezu cishe luyi-casting efakiwe. Ngaphezulu, ingxenye ebiyelwe kufanele futhi ibe ibhulokhi efakiwe.Ukuhlolwa kokuqina ezinhlangothini zombili zomngcele kwenziwe nge-hrs-150 digital display rockwell hardness tester kanye ne-mhv-2000 digital display microhardness tester, futhi kutholakale umehluko omkhulu. Ukwakheka kwe-alloy eyinhloko (ingxenyana yobuningi, %) ngu-0.38c, 0.91cr, 0.83mn kanye no-0.92si.Izici zemishini yezinto zensimbi zincike ekubunjweni kwazo kanye nenqubo yokwelapha ukushisa.Ukwakheka okufanayo kanye nomehluko wobulukhuni kubonisa ukuthi amazinyo ebhakede asetshenziswa ngaphandle kokwelashwa kokushisa ngemva kokuphonswa.Ukubhekwa kwezicubu ezilandelayo kuqinisekisa lokhu.
Ukuhlaziywa kwenhlangano kokubhekwa kwe-metallographic kubonise ukuthi i-substrate ngokuyinhloko iyisakhiwo esimnyama esihle se-lamellar, isethi yesicubu sinezingxenye ezimbili, i-fritter white block kanye ne-black block, ne-white block kude nenhlangano yendawo yesiphambano ngaphezulu (futhi ukuhlolwa kwe-microhardness okwengeziwe kufakazela ukuthi inhlangano yamapechisha amhlophe e-ferrite, uhlaka olumnyama lwe-lamellar olumnyama lwe-troostite noma i-troostite hybrid ferrilk enhlanganweni ye-troostite ye-perrilite ye-perrilite ye-perrilk kanye ne-pearrite ehlanganisiwe. ifana neyezinye izindawo zokushintsha kwesigaba endaweni ethintekile ekushiseni.Ngaphansi kwesenzo sokushisa kwe-metal liquid ngesikhathi sokuphonsa, lesi sifunda sisendaweni ye-austenite ne-ferrite yezigaba ezimbili, lapho i-ferrite ikhule ngokugcwele futhi i-microstructure yayo igcinwa ekamelweni lokushisa.Ngenxa yokuthi udonga lwezinyo lebhakede luncane kakhulu futhi umthamo we-block block ukhulu, ingxenye ephakathi ye-ferrite eyakhiwe yi-ferrite enkulu, ingxenye ephakathi ye-ferrite yakhiwe i-ferrite.
Ukuhlolwa kokugqoka emshinini wokuhlola wokugqoka we-mld-10 kubonisa ukuthi ukumelana nokugqokwa kwe-matrix nokufaka kungcono kunokwensimbi ecishiwe engu-45 ngaphansi kwesimo sokuhlolwa kokugqokwa komthelela omncane.Okwamanje, ukumelana nokugqokwa kwe-matrix nokufakwayo kuhlukile, futhi i-matrix imelana kakhulu nokufakwayo (bona ithebula 2) i-chiller.Enqubweni yokuphonsa, okusanhlamvu kwe-matrix kucwengisiswe ukuze kuthuthukiswe amandla ayo kanye nokumelana nokugqoka.Ngenxa yethonya lokushisa okukhiphayo, isakhiwo sokufaka sifana nendawo ethintekile yokushisa kwe-welding.Uma ukwelashwa okufanele kokushisa kwenziwa ngemva kokusakazwa ukuze kuthuthukiswe ukwakheka kwe-matrix nokufaka, ukumelana nokugqoka kanye nempilo yesevisi yamazinyo ebhakede kuzothuthukiswa ngokusobala.
Isikhathi sokuthumela: Apr-15-2019