Okusetshenziswa kakhulu ekukhiqizweni kungubulukhuni bendlela ye-Press-in, njengobulukhuni be-brinell, ubulukhuni be-brinell, bulukhuni bama-rockill, ubulukhuni obuncane kanye nobulukhuni obuncane. Inani elitholakele le-Hardness Empeleni limelela ukumelana kwensimbi yensimbi kuya ekuguqukeni kwepulasitiki okubangelwa ukungenelela kwezinto zakwamanye amazwe.
Okulandelayo ukwethulwa okufushane kumayunithi ahlukahlukene anzima:
1. I-Brinell Hardness (HB)
Cindezela ibhola lensimbi elilukhuni ngosayizi othile (imvamisa ububanzi obungu-10mm) ebusweni bezinto ezibonakalayo ngomthwalo othile (ngokuvamile i-3000kg) bese uyigcina isikhathi esithile. Ngemuva kokuthi umthwalo ususiwe, isilinganiso somthwalo endaweni yokubhalisa yi-Brinell Harveness Value (HB), in Kilogram Force / MM2 (N / MM2).
2. Rockwell Hurdness (hr)
Lapho i-HB> 450 noma isampula incane kakhulu, ukuhlolwa kwe-Brinell Hustness akunakusetshenziswa futhi kusetshenziswe ukulinganiswa kobulukhuni. Isebenzisa isigaxa sedayimane nge-vertex angle ka-120 ° noma ibhola lensimbi elinohlobo lwe-1.59mm kanye ne-3.18mm ukucindezela ngaphansi komthwalo othile, futhi ubunzima bezinto ezibonakalayo butholakala ekujuleni kwe-induction. Ngokuya ngobulukhuni bezinto zokuhlola, kungavezwa ezikalini ezintathu ezihlukile:
I-HRA: Kunzima okutholwe ngokusebenzisa umthwalo we-60kg kanye ne-indenter ye-DEAMEME I-Indenter, futhi kusetshenziselwa izinto ezinobulukhuni obukhulu (njenge-carbide ebekiwe, njll.).
I-HRB: Kunzima okutholwe ngokusebenzisa umthwalo we-100kg kanye nebhola lensimbi elukhuni elinobubanzi obuyi-1.58mm. Isetshenziselwa izinto ezinobulukhuni obuphansi (njengensimbi evulekile, i-iron yensimbi, njll.).
I-HRC: Kunzima okutholwe ngokusebenzisa umthwalo we-150kg kanye ne-indenter ye-DOE yedayimane, futhi kusetshenziselwa izinto ezinobulukhuni obuphezulu (njengensimbi eqinile, njll.).
3 Ubulukhuni bamavikezi (HV)
Sebenzisa i-Indenter ye-Diamor Square Isikwele ngomthwalo ongaphansi kwama-120kg kanye ne-vertex angle ye-136 ° ukucindezela endaweni ebonakalayo, bese uhlukanisa indawo yomgodi we-Indentation ye-Intentation yinani lomthwalo, okuyi-VCF / MM2).
Uma kuqhathaniswa nokuhlolwa kobulukhuni be-Brinell no-Rocwell, ukuhlolwa kobulukhuni bama-vickers kunezinzuzo eziningi. Akunazo izingqinamba zemibandela ebekiwe ye-Load P kanye ne-Indenter Direyimu efana ne-Brinell, kanye nenkinga yokuguqulwa kwe-indenter; Futhi ayinayo inkinga ukuthi inani lobukhuni lalibumbene. Futhi ingavivinya noma yiziphi izinto ezithambile nezilukhuni njenge-rockwell, futhi ingavivinya ubulukhuni bezingxenye ezibuthakathaka kakhulu (noma izingqimba ezicinene) ezingcono kune-RocKwell, ezingenziwa kuphela ngobulukhuni be-Rockewll. Kepha noma ngaphansi kwezimo ezinjalo, kungaqhathaniswa kuphela ngaphakathi kwesilinganiso se-rockall, futhi akunakuhlanganiswa namanye amazinga alukhuni. Ngaphezu kwalokho, ngoba i-Roclell isebenzisa ukujula kokufakwa njengezinkomba zokulinganisa, futhi ukujula kokuhlobisa kuhlale kuncane kunobubanzi be-induction, ngakho-ke iphutha elihlobene nalo likhudlwana. Ngakho-ke, idatha ye-Rocwell Hardness ayizinzile njenge-brinell kanye nama-vickers, futhi ayizinzile njengokunemba kwama-vickers.
Kunobudlelwano obuthile bokuguqula phakathi kweBrinell, Roclell kanye nama-Vickers, futhi kunethebula lobudlelwano bokuguqula obungabuzwa.
Isikhathi sePosi: Mar-16-2023
