1. Icyuma kizimye kandi gifite ubushyuhe
Ikizamini gikomeye cyo kuzimya no gutwarwa nicyuma gikoresha cyane cyane igipimo cya Rockwell igerageza igipimo cya HRC. Niba ibikoresho ari bito kandi igipimo cya HRC kidakwiriye, igipimo cya HRA kirashobora gukoreshwa aho. Niba ibikoresho ari bito, hejuru yubunini bwa Rockwell umunzani HR15N, HR30N, cyangwa HR45N urashobora gukoreshwa.
2. Ubuso bukomeye ibyuma
Mu musaruro w’inganda, rimwe na rimwe intandaro yakazi isabwa kugira ubukana bwiza, mugihe ubuso nabwo busabwa kugira ubukana bwinshi no kwambara birwanya. Muri iki gihe, kuzimya inshuro nyinshi, carburisiyasi yimiti, nitride, karubone ndetse nubundi buryo bikoreshwa mugukora imiti igoye hejuru yakazi. Ubunini bwubuso bukomera buri hagati ya milimetero nkeya na milimetero nkeya. Kubikoresho bifite ubuso bunini bukomeye, umunzani wa HRC urashobora gukoreshwa mugupima ubukana bwabo. Kuburebure buringaniye buringaniye ibyuma, umunzani HRD cyangwa HRA urashobora gukoreshwa. Kubutaka bworoshye gukomera, hejuru yubunini bwa Rockwell HR15N, HR30N, na HR45N bigomba gukoreshwa. Kubutaka bworoshye bwakomeye, hagomba gukoreshwa micro ya Vickers igerageza cyangwa ikizamini cya ultrasonic.
3. Ibyuma bifatanye, ibyuma bisanzwe, ibyuma byoroheje
Ibikoresho byinshi byibyuma bikozwe muburyo budasanzwe cyangwa busanzwe, kandi ibyuma bimwe bikonje bikonje nabyo bikurikiranwa hakurikijwe impamyabumenyi zitandukanye. Igeragezwa ryo gukomera ryibyuma bitandukanye bifatanye mubisanzwe bikoresha umunzani wa HRB, kandi rimwe na rimwe umunzani wa HRF nawo ukoreshwa kubisahani byoroshye kandi byoroshye. Kubisahani byoroshye, ibipimo bya Rockwell bikomeye HR15T, HR30T, na HR45T bigomba gukoreshwa.
4. Ibyuma
Ibyuma bidafite ingese mubisanzwe bitangwa muri leta nka annealing, kuzimya, ubushyuhe, nigisubizo gikomeye. Ibipimo byigihugu byerekana indangagaciro zikomeye zo hejuru nu munsi, kandi igeragezwa rikomeye rikoresha ibipimo bya Rockwell bipimisha HRC cyangwa HRB. Igipimo cya HRB kizakoreshwa mu byuma bya austenitike na ferritic, icyuma cya HRC cyo gupima ubukana bwa Rockwell kizakoreshwa kuri martensite n’imvura ikomera ibyuma bitagira umwanda, naho igipimo cya HRN cyangwa igipimo cya HRT cy’ibizamini bya Rockwell bizakoreshwa mu byuma bitagira umuyonga bitagira umuyonga hamwe n’ibipapuro bifite uburebure buri munsi ya 1 ~ 2mm.
5. Ibyuma byahimbwe
Ikizamini gikomeye cya Brinell gikunze gukoreshwa mubyuma byahimbwe, kubera ko microstructure yicyuma gihimbano idahwanye bihagije, kandi indorerezi ya Brinell ni nini. Kubwibyo, ikizamini cya Brinell gishobora kwerekana ibisubizo byuzuye bya microstructure hamwe nimiterere yibice byose byibikoresho.
6. Shira icyuma
Ibikoresho by'ibyuma bikunze kurangwa nuburyo butaringaniye hamwe nintete zoroshye, bityo ikizamini gikomeye cya Brinell gikoreshwa muri rusange. Ikizamini cya Rockwell gikomeye gishobora gukoreshwa mugupima ubukana bwibikoresho bimwe na bimwe bikozwe mucyuma. Iyo nta gace gahagije ku gice gito cyibiti byiza byo guteramo Brinell igoye, igipimo cya HRB cyangwa HRC gishobora gukoreshwa kenshi mugupima ubukana, ariko nibyiza gukoresha igipimo cya HRE cyangwa HRK, kuko umunzani wa HRE na HRK ukoresha imipira yicyuma ya diametero 3.175mm, ishobora kubona ibyasomwe neza kurenza imipira ya 1.588mm.
Ibikoresho byoroshye byoroshye byuma bikoresha ibyuma bya Rockwell bigerageza HRC. Niba ibikoresho bitaringaniye, amakuru menshi arashobora gupimwa hamwe nimpuzandengo yafashwe.
7. Carbide yacumuye (ikomeye cyane)
Ikigeragezo gikomeye cyibikoresho bivanze mubisanzwe bikoresha gusa igipimo cya Rockwell igerageza igipimo cya HRA.
Ifu
Igihe cyo kohereza: Jun-02-2023
