Umkhiqizi Wensimbi

Umuzwa Wokukhiqiza Weminyaka eyi-15
Insimbi

Uyazi ukuthi yini ukuthungatha, ukucisha kanye nokuthulisa?

Uma kukhulunywa ngensimbi ekwazi ukumelana nokushisa, kufanele sikhulume ngemboni yokwelapha ukushisa; uma kuziwa ekwelashweni kokushisa, kufanele sikhulume ngemililo emithathu yezimboni, ukucisha, ukucisha, kanye nokushisa. Ngakho yimuphi umehluko phakathi kwalaba abathathu?

(Eyodwa). Izinhlobo ze-annealing
1. Qedela ukukhishwa kwe-anneal kanye ne-isothermal
I-annealing ephelele nayo ibizwa ngokuthi i-recrystallization annealing, ngokuvamile ebizwa ngokuthi i-annealing. Lokhu kufakwa kwe-annealing kusetshenziselwa ikakhulukazi ukulingisa, ukubumba kanye namaphrofayili agingqiwe ashisayo ezinhlobonhlobo ze-carbon steels kanye ne-alloy steels enezingoma ze-hypoeutectoid, futhi kwesinye isikhathi isetshenziselwa izakhiwo ezishiselwe. Ngokuvamile isetshenziswa njengokwelashwa kokushisa kokugcina kwezinye izinto zokusebenza ezingabalulekile, noma njengokwelashwa kwangaphambi kokushisa kwezinye izinto zokusebenza.
2. i-spheroidizing annealing
I-spheroidizing annealing isetshenziselwa kakhulu i-hypereutectoid carbon steel kanye ne-alloy tool steel (njengezinhlobo zensimbi ezisetshenziswa ekukhiqizeni amathuluzi okusika, amathuluzi okulinganisa, nezibungu). Inhloso yayo eyinhloko ukunciphisa ubulukhuni, ukuthuthukisa ukusebenza kahle, nokulungiselela ukucisha okulandelayo.
3.Ukunciphisa ingcindezi
Ukunciphisa izinga lokushisa lokucindezeleka kubizwa nangokuthi i-low-temperature annealing (noma izinga lokushisa eliphezulu). Lolu hlobo lwe-annealing lusetshenziselwa kakhulu ukuqeda ingcindezi eyinsalela ku-castings, forgings, izingxenye zokushisela, izingxenye ezigoqelwe ezishisayo, izingxenye ezidonswa ngokubanda, njll. isikhathi esithile noma phakathi nezinqubo zokusika ezalandela.

(Ababili). Ukucisha
Izindlela eziyinhloko ezisetshenziselwa ukuthuthukisa ubulukhuni ukushisa, ukugcinwa kokushisa, nokupholisa ngokushesha. Imithombo yokupholisa esetshenziswa kakhulu yi-brine, amanzi namafutha. I-workpiece ecinywe emanzini anosawoti kulula ukuthola ubulukhuni obuphezulu kanye nobuso obushelelezi, futhi ayijwayele izindawo ezithambile ezingacimeki, kodwa kulula ukubangela ukuguqulwa okukhulu kwe-workpiece ngisho nokuqhekeka. Ukusetshenziswa kwamafutha njengendlela yokucisha kufaneleka kuphela ukucisha ezinye izinsimbi ze-alloy noma izingcezu zensimbi ze-carbon steel ezinosayizi omncane lapho ukuzinza kwe-austenite epholile kukhulu kakhulu.

(Ezintathu). Ukuthukuthela
1. Yehlisa i-brittleness futhi uqede noma unciphise ukucindezeleka kwangaphakathi. Ngemva kokucisha, izingxenye zensimbi zizoba nokucindezeleka okukhulu kwangaphakathi kanye nokuqina. Uma zingacunuki ngesikhathi, izingxenye zensimbi zivame ukukhubazeka noma ukuqhekeka.
2. Thola izici ezidingekayo zemishini ye-workpiece. Ngemva kokucisha, i-workpiece inobunzima obuphezulu kanye ne-brittleness ephezulu. Ukuze kuhlangatshezwane nezidingo ezihlukene zokusebenza kwezingcezu zokusebenza ezihlukahlukene, ubulukhuni bungalungiswa ngokushisa okufanele, kuncishiswe ukuqina kanye nokuthola ukuqina okudingekayo. Ipulasitiki.
3. Usayizi we-workpiece ozinzile
4. Kwezinye izinsimbi ze-alloy okunzima ukuthambisa ngokufaka i-annealing, ukushisa okuphezulu kokushisa kuvame ukusetshenziswa ngemva kokucisha (noma ukujwayelekile) ukuqoqa kahle ama-carbides ensimbi futhi kunciphise ubulukhuni ukuze kube lula ukusika.


Isikhathi sokuthumela: Apr-10-2024