Sinter kuomesa muMIM

Chii chinonzi Sinter Hardening?

Kuomeswa kweSinter inzira inoburitsa martensite shanduko panguva yekutonhora kweiyo sintering cycle.

Ndiyo sintering uye kupisa kurapwa kweupfu metallurgy zvinhu zvinosanganiswa kuita imwe nzira, kuitira kuti maitiro ekugadzira zvinhu awedzere kushanda uye hupfumi hwehupfumi hunovandudzwa.

Hunhu hwekuomesa sinter:

1) Metal plasticity inovandudzwa zvikuru.Munguva yakapfuura, nickel-based alloys ayo aingogona kuumbwa nekukandira asi asingakwanise kuumbwa nekuforoma anogona zvakare kuumbwa ne sinter hardening die forging, nekudaro kuwedzera mhando dzesimbi dzinofefeka.

2) Iyo deformation kuramba kwesimbi idiki kwazvo.Kazhinji, dzvinyiriro yakazara ye sinter-hardening die forging inongova chidimbu chimwe chete kusvika pachikamu chimwe chete chegumi cheiyo yezvakajairwa kugadzira kufa.Naizvozvo, yakakura kufa forging inogona kugadzirwa pamidziyo ine diki tonnage.

3) Yakakwirira kugadzirisa kurongeka Sintering kuomesa kuumba kugadzirisa kunogona kuwana dzakatetepa-madziro mativi ane saizi chaiyo, chimiro chakaomarara, yunifomu yezviyo chimiro, yunifomu yemagetsi zvivakwa, diki machining mvumo, uye inogona kushandiswa kunyangwe isina kucheka.Naizvozvo, sinter-kuomesa kuumba inzira nyowani yekuwana kushoma kana kusave nekucheka uye kunyatso kuumba.

Izvo zvinokurudzira zvinhu zvekuomesa sinter zvinonyanya zvinosanganisira:Alloying elements, kutonhora rate, density, carbon content.

Mwero wekutonhodza wekuomesa sinter ndeye 2 ~ 5 ℃/s, uye mwero wekutonhora unokurumidza kukurumidza kukonzeresa shanduko yechikamu chemartensite mune izvo.Naizvozvo, kushandiswa kweiyo sinter kuomesa maitiro kunogona kuchengetedza inotevera carburizing maitiro.

Kusarudzwa kwezvinhu:
Sinter kuomesa kunoda hupfu hunokosha.Kazhinji, kune marudzi maviri e-iron-based powder metallurgy zvinhu, zvinoti:

1) Elemental poda yakasanganiswa poda, kureva, yakasanganiswa poda inoumbwa ne elemental poda yakasanganiswa nehupfu hwesimbi.Iyo inonyanya kushandiswa alloying element poda igraphite hupfu, copper hupfu uye nickel poda.Kusarudzika kwakasarudzika kana kurapwa kwekunamira kunogona kushandiswa kubatanidza hupfu hwemhangura uye nickel hupfu pane simbi hupfu.

2) Ndiyo inonyanya kushandiswa yakaderera alloy simbi poda mukuomesa sinter.Mukugadzirira kweiyi yakaderera-alloy simbi poda, iyo alloying zvinhu manganese, molybdenum, nickel uye chromium inowedzerwa.Tichifunga nezvekuti zvinhu zvinosanganiswa zvese zvakanyungudika musimbi, kuoma kwezvinhu kunowedzera, uye iyo microstructure yezvinhu mushure mekunyunguduka inofanana.