Ikoreshwa cyane mubikorwa ni ubukana bwuburyo bwo gukanda, nko gukomera kwa Brinell, gukomera kwa Rockwell, gukomera kwa Vickers no gukomera kwa micro.Agaciro gakomeye kabonetse kagaragaza cyane cyane kurwanya ubuso bwicyuma kumiterere ya plastike iterwa no kwinjira mubintu byamahanga.
Ibikurikira nintangiriro ngufi kubice bitandukanye bigoye:
1. Gukomera kwa Brinell (HB)
Kanda umupira wicyuma ufite ubunini bunini (mubusanzwe 10mm ya diametre) hejuru yibikoresho bifite umutwaro runaka (muri rusange 3000 kg) hanyuma ubigumane mugihe runaka.Nyuma yumutwaro umaze gukurwaho, igipimo cyumutwaro mukarere ka indentation nigiciro gikomeye cya Brinell (HB), mumbaraga za kilo / mm2 (N / mm2).
2. Gukomera kwa Rockwell (HR)
Iyo HB> 450 cyangwa icyitegererezo ari gito cyane, ikizamini cya Brinell ntigishobora gukoreshwa kandi gupima ubukana bwa Rockwell bigomba gukoreshwa aho.Ikoresha cone ya diyama ifite inguni ya vertex ya 120 ° cyangwa umupira wicyuma ufite diameter ya 1.59mm na 3.18mm kugirango ukande hejuru yibikoresho bizageragezwa munsi yumutwaro runaka, kandi ubukana bwibintu biva muri ubujyakuzimu bwa indentation.Ukurikije ubukana bwibikoresho byikizamini, birashobora kugaragazwa mubipimo bitatu bitandukanye:
HRA: Nubukomezi bwabonetse ukoresheje umutwaro wa 60 kg hamwe na diyama ya cone indenter, kandi ikoreshwa mubikoresho bifite ubukana bukabije cyane (nka karbide ya sima, nibindi).
HRB: Nubukomezi bwabonetse ukoresheje umutwaro wa 100 kg hamwe numupira wicyuma ukomeye ufite diameter ya 1.58mm.Ikoreshwa mubikoresho bifite ubukana buke (nk'ibyuma bifatanye, ibyuma, nibindi).
HRC: Nubukomezi bwabonetse ukoresheje umutwaro wa 150 kg hamwe na diamant cone indenter, kandi bikoreshwa mubikoresho bifite ubukana bwinshi (nk'ibyuma bikomeye, nibindi).
3 Vickers gukomera (HV)
Koresha indangantego ya diyama ifite umutwaro uri munsi ya 120kg hamwe na vertex inguni ya 136 ° kugirango ukande hejuru yibintu, hanyuma ugabanye ubuso bwubuso bwibintu byerekanwa nigiciro cyumutwaro, aribwo Vickers gukomera HV agaciro ( kgf / mm2).
Ugereranije na Brinell na Rockwell ibizamini bikomeye, Ikizamini cya Vickers gifite ibyiza byinshi.Ntabwo ifite imbogamizi zuburyo bwihariye bwumutwaro P na diameter ya indenter D nka Brinell, nikibazo cyo guhindura indenter;nta nubwo ifite ikibazo cyuko agaciro gakomeye ka Rockwell kadashobora guhuzwa.Kandi irashobora kugerageza ibikoresho byose byoroshye kandi bikomeye nka Rockwell, kandi irashobora kugerageza ubukana bwibice bito cyane (cyangwa ibice byoroheje) kurusha Rockwell, bishobora gukorwa gusa nuburemere bwa Rockwell.Ariko nubwo bimeze bityo, birashobora kugereranywa gusa murwego rwa Rockwell, kandi ntibishobora guhuzwa nizindi nzego zikomeye.Mubyongeyeho, kubera ko Rockwell ikoresha ubujyakuzimu bwa indentation nkigipimo cyo gupima, kandi ubujyakuzimu bwa indentation buri gihe ni buto kuruta ubugari bwa indentation, bityo ikosa ryacyo naryo rikaba rinini.Kubwibyo, amakuru akomeye ya Rockwell ntabwo ahamye nka Brinell na Vickers, kandi birumvikana ko adahagaze neza nka Vickers neza.
Hariho isano runaka yo guhinduka hagati ya Brinell, Rockwell na Vickers, kandi hariho imbonerahamwe yimibanire ihinduka ishobora kubazwa.
Igihe cyo kohereza: Werurwe-16-2023
