Ubulukhuni Inani Lethuluzi Lensimbi Ye-Tungsten Noma Ithuluzi Lokugaya Ingxubevange

Ukuqina yikhono lempahla yokumelana nezinto eziqinile ezicindezela endaweni yayo. Ingenye yezinkomba zokusebenza ezibalulekile zezinto zensimbi.

Ngokuvamile, ukuphakama kokuqina, kungcono ukumelana nokugqoka. Izinkomba zokuqina ezivame ukusetshenziswa yiBrinell hardness, Rockwell hardness kanye neVickers hardness.

Ukuqina kwe-Brinell (HB)

Cindezela ibhola lensimbi eliqinile losayizi othile (ngokuvamile u-10 mm ububanzi) endaweni ebonakalayo enomthwalo othile (ngokuvamile u-3000 kg), futhi uyigcine isikhathi esithile. Ngemva kokuthulula, isilinganiso somthwalo endaweni yokuhlohla yinombolo yobulukhuni be-Brinell (HB), kanti iyunithi ingamandla ekhilogremu / mm2 (n / mm2).

2. Ukuqina kwe-Rockwell (HR)

Uma i-HB > 450 noma isampula lincane kakhulu, ukukalwa kokuqina kwe-Rockwell ngeke kusetshenziswe esikhundleni sokuhlolwa kokuqina kwe-Brinell. Kuyi-cone yedayimane ene-engeli ephezulu engu-120 degrees noma ibhola lensimbi elinobubanzi obungu-1.59 no-3.18 mm. Icindezelwa ebusweni bezinto ezingaphansi komthwalo othile, futhi ukuqina kwento kubalwa kusukela ekujuleni kwe-indent. Ngokusho kobunzima obuhlukene bezinto zokuhlola, zingavezwa ngezikali ezintathu ezihlukene:

450 noma isampula lincane kakhulu, ukukalwa kokuqina kwe-Rockwell ngeke kusetshenziswe esikhundleni sokuhlolwa kokuqina kwe-Brinell. Kuyi-cone yedayimane ene-engeli ephezulu engu-120 degrees noma ibhola lensimbi elinobubanzi obungu-1.59 no-3.18 mm. Icindezelwa ebusweni bezinto ezingaphansi komthwalo othile, futhi ukuqina kwento kubalwa kusukela ekujuleni kwe-indent. Ngokusho kobunzima obuhlukene bezinto zokuhlola, zingavezwa ngezikali ezintathu ezihlukene:

I-HRA: Ukuqina okutholwe ngomthwalo we-60 kg kanye ne-diamond cone indenter isetshenziselwa izinto ezinobunzima obuphakeme kakhulu (njenge-carbide enosimende).

I-HRB: Ukuqina okutholakala ngokuqinisa ibhola lensimbi elinobubanzi obungu-1.58 mm nomthwalo ongu-100 kg. Isetshenziselwa izinto ezinobulukhuni obuphansi.(njengensimbi exutshwe, insimbi ecijile, njll.).

I-HRC: Ukuqina okutholwe ngomthwalo we-150 kg kanye ne-diamond cone indenter isetshenziselwa izinto ezinokuqina okuphezulu (njengensimbi ecishiwe).

3. Ukuqina kwe-Vickers (HV)