Ukuqina kweSinter kwiMIM

Yintoni i-Sinter Hardening?

Ukuqina kwe-Sinter yinkqubo evelisa inguqu ye-martensite ngexesha lesigaba sokupholisa somjikelezo we-sintering.

Leyo yi-sintering kunye nobushushu bonyango lwezixhobo ze-metallurgy ezidityanisiweyo zibe yinkqubo enye, ukuze inkqubo yokuvelisa izinto isebenze ngakumbi kwaye izibonelelo zoqoqosho ziphuculwe.

Iimpawu zokuqina kwe-sinter:

1) Iplastiki yensimbi iphuculwe kakhulu.Ngaphambili, iialloyi ezisekelwe kwi-nickel ezinokuthi zenziwe kuphela ngokuphosa kodwa zingenako ukubunjwa ngokubunjwa zinokuthi zenziwe nge-sinter hardening die forging, ngaloo ndlela zandisa iintlobo zesinyithi ezikhubekisayo.

2) Ukuxhatshazwa kwe-deformation yensimbi kuncinci kakhulu.Ngokubanzi, uxinzelelo lulonke lwe-sinter-hardening die forging liqhezu elinye ukuya kwisinye eshumini sokwenziwa kwedayiti eqhelekileyo.Ke ngoko, i-forging enkulu yokufa inokwenziwa kwizixhobo ezinetoni encinci.

I-3) Ukuchaneka okuphezulu kokuchaneka kwe-Sintering hardening forming processing inokufumana iinxalenye ezinodonga oluncinci kunye nobukhulu obuchanekileyo, imilo enzima, ukwakheka kweenkozo ezifanayo, iipropati ezifanayo zomatshini, isibonelelo esincinci somatshini, kwaye sinokusetyenziswa ngaphandle kokusika.Ke ngoko, ukwenza ukuqina kwe-sinter yindlela entsha yokufezekisa ukusika okuncinci okanye kungabikho kunye nokwenza ngokuchanekileyo.

Izinto ezinempembelelo zokuqiniswa kwe-sinter ikakhulu ziquka:Izinto ezidibanisayo, izinga lokupholisa, ukuxinana, umxholo wekhabhoni.

Izinga lokupholisa lokuqina kwe-sinter yi-2 ~ 5 ℃/s, kwaye izinga lokupholisa likhawuleza ngokwaneleyo ukubangela ukuguqulwa kwesigaba se-martensite kwizinto eziphathekayo.Ke ngoko, ukusetyenziswa kwenkqubo yokuqina kwe-sinter kunokugcina inkqubo yokungcwatywa kwe-carburizing elandelayo.

Ukukhethwa kwezinto:
Ukuqina kweSinter kufuna umgubo okhethekileyo.Ngokubanzi, zimbini iindidi zentsimbi esekwe ngumgubo wesinyithi, ezizezi:

1) I-Elemental powder exutywe ngumgubo, oko kukuthi, umgubo odibeneyo owenziwe ngomgubo we-elemental oxutywe kunye nomgubo wentsimbi ecocekileyo.Ezona zinto zixhaphakileyo zisetyenziswa umgubo we-alloying ngumgubo wegraphite, umgubo wobhedu kunye nomgubo wenickel.Ukusasazwa okukodwa okanye unyango oluncamathelayo lungasetyenziselwa ukudibanisa umgubo wobhedu kunye nomgubo wenickel kumasuntswana omgubo wentsimbi.

I-2) Yeyona nto isetyenziswa kakhulu i-low alloy powder powder kwi-sinter hardening.Ekulungiseleleni le mibhobho yensimbi ephantsi, i-alloying elements i-manganese, i-molybdenum, i-nickel kunye ne-chromium yongezwa.Ngenxa yokuba i-alloying elements yonke inyibilika ngesinyithi, ukuqina kwezinto eziphathekayo kwanda, kwaye i-microstructure yezinto eziphathekayo emva kokuxutywa ifana.