(1) Umehluko omkhulu phakathi kwezinto zensimbi ezisetshenziselwa izingxenye zamaketanga ekhaya naphesheya usezicwecweni zamaketango angaphakathi nangaphandle.Ukusebenza kwe-chain plate kudinga amandla aphezulu okudonsa kanye nokuqina okuthile.E-China, i-40Mn kanye ne-45Mn imvamisa isetshenziselwa ukukhiqiza, kanti insimbi engama-35 ayivamisile ukusetshenziswa.Ukwakheka kwamakhemikhali kwamapuleti ensimbi angu-40Mn kanye ne-45Mn kubanzi kunaleyo yezinsimbi zangaphandle ze-S35C kanye ne-SAEl035, futhi kukhona u-1.5% kuya ku-2.5% wokuqothula ukuqina phezulu.Ngakho-ke, i-chain plate ivame ukuhlushwa yi-brittle fracture ngemva kokucisha kanye nokushisa okwanele.
Ngesikhathi sokuhlolwa kokuqina, ubulukhuni bobuso be-chain plate ngemva kokucisha buphansi (ngaphansi kwama-40HRC).Uma ugqinsi oluthile longqimba olungaphezulu lugugile, ubulukhuni bungafinyelela ngaphezu kuka-50HRC, okuzothinta kakhulu umthwalo omncane wokunyakaza weketango.
(2) Abakhiqizi bakwamanye amazwe ngokuvamile basebenzisa i-S35C ne-SAEl035, futhi basebenzisa iziko elithuthuke kakhulu elinenetha eliqhubekayo le-carburizing.Ngesikhathi sokwelashwa kokushisa, umoya ovikelayo usetshenziselwa ukwelashwa kwe-recarburization.Ngaphezu kwalokho, ukulawulwa kwenqubo okuqinile esizeni kuyasetshenziswa, ngakho-ke ama-chain plate awavamile ukwenzeka.Ngemuva kokucisha nokushisa, ukuphuka okuphukayo noma ubulukhuni obuphansi bendawo kwenzeka.
Ukubhekwa kwe-Metallographic kubonisa ukuthi kunenani elikhulu lesakhiwo esihle njengenaliti ye-martensite (cishe 15-30um) ebusweni bepuleti leketanga ngemva kokucisha, kuyilapho umgogodla ufana ne-strip-like martensite structure.Ngaphansi kwesimo sobukhulu obufanayo bepuleti leketango, ubuncane bomthwalo we-tensile ngemva kokushisa bukhulu kunalowo wemikhiqizo yasekhaya.Emazweni angaphandle, amapuleti awugqinsi angu-1.5mm asetshenziswa ngokujwayelekile kanti amandla adingekayo yi->18 kN, kuyilapho amaketango afuywayo evamise ukusebenzisa amapuleti awugqinsi angu-1.6-1.7mm kanti amandla adingekayo e-tensile angu->17.8 kN.
(3) Ngenxa yokuthuthukiswa okuqhubekayo kwezidingo zezingxenye zeketanga lezithuthuthu, abakhiqizi basekhaya nabangaphandle bayaqhubeka nokuthuthukisa insimbi esetshenziselwa izikhonkwane, imikhono namarola.Umthwalo omncane we-tensile futhi ikakhulukazi ukumelana nokugqoka kweketango kuhlobene nensimbi.Ngemuva kokuthi abakhiqizi basekhaya nabangaphandle basanda kukhethwa insimbi engu-20CrMnTiH njengephinikhodi esikhundleni se-20CrMnMo, umthwalo we-chain tensile ukhuphuke ngo-13% kuya ku-18%, futhi abakhiqizi bangaphandle basebenzisa insimbi ye-SAE8620 njengephini kanye nokokusebenza kwemikhono.Lokhu futhi kuhlobene nalokhu.Ukuzijwayeza kubonise ukuthi kuphela ngokwenza ngcono igebe elifanelekile phakathi kwephini kanye nomkhono, ukuthuthukisa inqubo yokwelapha ukushisa nokugcoba, ingabe ukumelana nokugqoka kanye nomthwalo oqinile weketango kungathuthukiswa kakhulu.
(4) Ezingxenyeni zeketango lesithuthuthu, ipuleti elingaphakathi lesixhumanisi kanye nomkhono, ipuleti lokuxhuma langaphandle kanye nephinikhodi konke kuhlanganiswe nokufaka okuthikamezayo, kuyilapho iphinikhodi nomkhono zilingana.Ukulingana phakathi kwezingxenye zamaketango kunethonya elikhulu ekuqineni kokugqoka kanye nomthwalo omncane wokudonsa weketango.Ngokusho kwezikhathi ezihlukene zokusetshenziswa kanye nemithwalo yokulimala kweketango, ihlukaniswe ngamazinga amathathu: A, B kanye no-C. I-Class A isetshenziselwa ukuhanjiswa okunzima, isivinini esikhulu kanye nokubalulekile;Ikilasi B lisetshenziselwa ukudluliselwa okuvamile;I-Class C isetshenziselwa ukuguqula amagiya ajwayelekile.Ngakho-ke, izidingo zokuxhumanisa phakathi kwezingxenye zeketanga Lesigaba A ziqinile.
Isikhathi sokuthumela: Sep-08-2023