Yiziphi izinkomba zobuchwepheshe izingxenye ze-carburizing kanye nokucisha?

I-Carburizing kanye ne-quenching yakha isendlalelo se-martensite esinokuqukethwe okuphezulu kwekhabhoni ebusweni bengxenye, enobunzima obukhulu, okuqukethwe okuphezulu kwe-carbide nokumelana nokugqoka okuphezulu. Umnyombo uyisakhiwo se-low-carbon martensite, ngakho-ke ingcindezi yokucindezela phezulu inkulu. Ukuqina okuphelele kuphezulu. Lezi zici zenza i-carburizing kanye nokucisha kusetshenziswe kabanzi kumagiya nezinye izingxenye ezidinga ukumelana nokugqokwa okuphezulu, amandla aphezulu okukhathala, namandla okuxhumana aphezulu okukhathala. Ukuqina kwe-induction kunezici zokushisa okusheshayo nokupholisa ngokushesha, okwandisa kakhulu usayizi wokusanhlamvu wento. Ngenkathi ithola ubulukhuni obuphezulu kakhulu, ithola inkomba yokuqina okuphezulu, ngaleyo ndlela ithuthukise ukusebenza kwezingxenye.

1. Ukumelana nemihuzuko

Izingxenye ze-Carburized nezicishiwe zinokuphikiswa okuphezulu kokugqoka ngenxa yokuqina okuphezulu nama-carbides ebusweni. Ukuqina kwe-induction kungathola ubulukhuni obukhulu ngaphansi kokuqukethwe kwekhabhoni ephansi, futhi ukumelana nokugqoka kuhlobene ne-microstructure yayo.

20CrMnTiH3 carburizing quenching kanye 45 steel induction quenching kwenziwa amasampula okugqoka ajwayelekile, anobulukhuni obungu-62～62.5HRC, ahlolwe emshinini wokuhlola we-M-200, kanti izingxenye ezigqokile zicinywa i-T10. Ngemuva kwezikhathi eziyizigidi ezingu-1.6 zokuguga, isampula ye-carburized yalahlekelwa ngu-4.0 mg futhi isampula elicishiwe lokungeniswa lalahlekelwa ngu-2.1 mg. Iyiphi indlela eyenza izibonelo eziqinile zokungeniswa zibe nokungagugi okuphezulu? Kuyafaneleka ukutadisha.

2. Amandla

Ngokuvamile kunenkolelo yokuthi amandla ahlobene nobulukhuni, futhi ubunzima obufanayo bungathola amandla afanayo. Ngezingxenye ezithile, yimiphi eminye imingcele ehlobene nayo? Sihlole izibonelo eziqinile ezimise okwe-dumbbell ezenziwe nge-20CrMnTiH3 carburizing and quenching kanye nensimbi engu-45, 40CrH, 40MnBH induction quenching. Ububanzi bengxenye obusebenzayo besampula bebungu-20mm, kanti amandla okuqinile akaliwe bekuyi-819MPa, 1184MPa, 1364MPa, Ku-1369MPa, amandla amasampula ensimbi ekhabhoni ephakathi nendawo ngemva kokucishwa kokungeniswa aphakeme kakhulu kunalawo ezingxenye ezishisiwe.

Imiphumela yalezi zinqubo ezimbili iyaqhathaniswa. Ingaphezulu lesampula elishisiwe nelicishiwe liyi-high-carbon martensite, isendlalelo se-carburized yi-1.25mm, ubulukhuni bungu-62-63HRC, kanti umnyombo uyi-low-carbon martensite, futhi ubulukhuni buyi-32HRC. Ingaphezulu lesampula le-induction hardened liyi-medium-carbon martensite, ukujula kongqimba oluqinile ngu-3.6mm, ukuqina kungu-62HRC, kanti umnyombo uyi-sorbite ethambile, ubulukhuni buyi-26HRC. Kungatholakala ukuthi kunomehluko omkhulu ekujuleni kongqimba oluqinile olutholwe izindlela ezimbili zokwelapha, futhi ukuqina kokungeniswa kungathola ungqimba oluqinile olujulile, ngaleyo ndlela kutholwe ingxenye enkulu yamandla. Ngakho-ke, lapho sixoxa ngokuthi iyiphi inqubo yokuqinisa engcono, akumele siyihlaziye kuphela ngombono omncane, kodwa futhi siyicabangele ngombono omkhulu.

3. Amandla okukhathala

Ngemuva kokuqina kwe-carburizing kanye nokungeniswa kwe-induction, ingaphezulu lezingxenye liqiniswa ngokuphumelelayo, futhi kwakheka ingcindezi enkulu eyinsalela yokucindezela, futhi bobabili banamandla aphezulu okukhathala.

Izingxenye zamagiya ezine-modulus engu-2.5 zikhethelwe ucwaningo, futhi zashiswa futhi zacinywa ngo-20CrMnTiH3 ngokujula kwe-carburizing okungu-1.2mm; Insimbi engu-45 kanye ne-42CrMo yenziwe lukhuni ngokucisha impande yezinyo ukujula okungu-2.0mm. Ukuqina kungu-61～63HRC, futhi amazinyo aphansi ngemva kokwelashwa kokushisa. Ukuhlolwa emshinini wokuhlola ukukhathala ngokuhambisana nendlela yokulayisha eboniswe kuMfanekiso 1. Ukukhathala okumaphakathi okugobayo kwemithwalo yokugcina yokucindezela kwezinto ezintathu ezihlukene kanye namazinyo egiya aphethwe ukushisa kungu-18.50kN, 20.30kN no-28.88kN, ngokulandelana. Amandla okukhathala amagiya aqinile we-42CrMo induction aphakeme ngo-56% kunalawo e-20CrMnTiH3 carburizing and quenching, anezinzuzo ezibalulekile. Ukuze uhlaziye indlela yayo, kuyadingeka ukuqala ngesakhiwo sesendlalelo esiqinile, izinga lokucindezeleka elicindezelayo, ukwakheka kwenhliziyo nobulukhuni.

4. Xhumana namandla okukhathala

Ezingxenyeni zamagiya, ukwehluleka kokukhathala kokuxhumana kwendawo yezinyo nakho kuyimodi yokwehluleka eyinhloko. Amagiya asebenza ngokukhanya anezidingo eziphansi uma kuqhathaniswa zokukhathala othintana naye, futhi noma ngabe ukuqina kokungeniswa kungangena esikhundleni sokungcwatshwa kwezimoto kanye nokuqina kumagiya athile asindayo, le nkomba iwukuqukethwe okufanele kuhlolwe. Ucwaningo lwethu kule ndawo alujulile ngokwanele.

5. Ukucisha deformation

Inqubo ye-carburizing inokushisa okuphezulu, isikhathi eside kanye ne-deformation enkulu yokucisha. Inqubo yokugaya elandelayo izoba mncane indawo engaphezulu ngamandla amakhulu kanye nokucindezeleka okuphezulu kokucindezela, okuholela ekunciphiseni kwamandla engxenye. I-Carburizing kanye nokucisha amagiya kuya ngokuya kusetshenziswa ubuchwepheshe bokucisha umshini, inhloso ukwehlisa ukucisha ukucisha. Ukuguqulwa kokuqina kokungeniswa kuncane uma kuqhathaniswa, futhi ngenxa yokuqina kongqimba olucishiwe, umthelela wokugaya ekujuleni kokuqina mncane uma kuqhathaniswa.