I. Ukuqina kweRockwell (HR)
Chofoza lapha ukuthola imininingwane mayelana nemikhiqizo yethu.
1. Isimiso

Usebenzisa ikhoni yedayimane (ene-engeli engu-120° engenhla) noma ibhola lensimbi (elinobubanzi obungu-1.59mm noma u-3.18mm) njenge-indenter, licindezele endaweni ebonakalayo ngaphansi kwesenzo somthwalo wokuqala kanye nomthwalo oyinhloko. Inani lobulukhuni libalwa ngokusekelwe ekujuleni kokufakwa kwe-indenter—lapho ukufakwa kwe-indenter kujula, inani lobulukhuni liyancipha.

2. Izici

- Isivinini sokuhlola esisheshayo kanye nokusebenza okulula, okufanele ukuhlolwa kweqembu.
- Iyakwazi ukuhlola izinto zokuqina okuphakathi kuya kokuphezulu.
- Izikali eziningi ziyatholakala ngokusekelwe ebulukhunini bezinto ezibonakalayo:
- I-HRA: Isebenzisa umthwalo ongu-60kg kanye ne-indenter yedayimane, efanelekile ezintweni eziqinile kakhulu njenge-carbide efakwe usimende.
- I-HRB: Isebenzisa umthwalo ongu-100kg kanye ne-indenter yebhola lensimbi, efanelekile insimbi ethambile, i-alloy yethusi, i-alloy ye-aluminium, njll.
- I-HRC: Isebenzisa umthwalo ongu-150kg kanye ne-indenter yedayimane, efanelekile ensimbini ecinyiwe, ama-alloy anobulukhuni obuphezulu, njll.

3. Izicelo Ezijwayelekile

Isetshenziswa kabanzi ekuhlolweni kokuqina okusheshayo kwemikhiqizo yensimbi njengamathuluzi okusika, amabheringi, amagiya, kanye nezingxenye zensimbi ezibunjiwe.

II. Ukuqina kweBrinell (HBW)

1. Isimiso

Ibhola eliqinile le-alloy elinobubanzi obuthile (ngokuvamile u-10mm) licindezelwa ebusweni bezinto ezibonakalayo ngaphansi komthwalo ocacisiwe, futhi inani lobulukhuni libalwa ngokusekelwe kububanzi bokugoba.
Izinhlobo ezivamile zoBulukhuni bukaBrinell:

- I-HBS: Isebenzisa i-indenter yebhola lensimbi, efanele izinto ezinobulukhuni obungu-≤ 450 HB, njengensimbi ethambile, insimbi empunga, kanye nezinsimbi ezingezona i-ferrous.
- I-HBW: Isebenzisa i-indenter yebhola eliqinile, efanelekile ezintweni ezinobunzima obungu-≤ 650 HB, futhi iyindlela ejwayelekile yezindinganiso zanamuhla.

2. Izici

- Imiphumela ezinzile kanye nokuphindaphindeka okuhle.
- Kufanelekela izinsimbi ezithambile neziqinile.
- Ukugoba kukhulu kakhulu, ngakho-ke akufaneleki ezingxenyeni ezinodonga oluncane noma ezincane.

3. Izicelo Ezijwayelekile

Ukuhlolwa kokuqina kwezinto zokusetshenziswa kanye nezingxenye ezicutshungulwe kahle, njengensimbi eqoshiwe, insimbi ephonswe ngensimbi, kanye nezinsimbi ezingezona i-ferrous kanye nezinsimbi zazo.

III. Ukuqina kwe-Vickers (HV)

1. Isimiso

I-indenter yedayimane yephiramidi yesikwele ene-angle engu-136° isetshenziswa ukucindezela endaweni yezinto ezibonakalayo ngaphansi komthwalo ocacisiwe, futhi inani lobulukhuni libalwa ngokusekelwe kubude obuqondile bokugoba.

2. Izici

- Ukunemba okuphezulu: Kuvumela ukulinganiswa kobulukhuni okunembile, ngisho nasezindaweni ezincane kakhulu (isb., izifunda ezincane zezinto).
- Uhla olubanzi lokusetshenziswa: Kufanelekela izinto zokuhlola kuzo zonke izinhlobo zobunzima, kusukela ezinsimbini ezithambile (njenge-aluminium alloys) kuya ezintweni eziqinile kakhulu (njenge-carbides eqinisiwe).
- Ukugoba okuncane: Ukugoba okuncane okushiywe ebusweni bezinto ezibonakalayo kugwema ukulimaza izingxenye zomsebenzi, okwenza kube kuhle kakhulu ezingxenyeni ezinodonga oluncane, ukumbozwa kobuso, kanye nokuhlolwa kobulukhuni bendawo encane.

3. Izicelo Ezijwayelekile

Isetshenziswa kabanzi ekuhlolweni kobulukhuni bezingxenye ezinembile, izembozo zobuso, kanye namashidi amancane—isibonelo, ukulinganisa ubulukhuni bezembozo zegobolondo lefoni ephathekayo ukuqinisekisa ukumelana nokuguguleka. Ngaphezu kwalokho, kubalulekile ocwaningweni lwesayensi ekuhlaziyweni kobulukhuni bezindawo ezincane kakhulu, njengokuhlolwa kobulukhuni bemingcele yokusanhlamvu kanye nemingcele yesigaba ezintweni zokufunda izakhiwo ezincane zezinto.

4. Ukuqhathanisa Izindlela Ezintathu Zokuhlola Ubulukhuni

5. Isifinyezo
Izindlela ezintathu zokuhlola ubulukhuni ngayinye inezinzuzo zayo. Indlela efanele kakhulu kufanele ikhethwe ngokuphelele ngokusekelwe ezicini zezinto ezibonakalayo, ukuma kwesampula, ububanzi bobulukhuni kanye nezidingo zokunemba ukuze kutholakale imiphumela yokuhlola enengqondo kakhulu.

Chofoza lapha ukuthola imininingwane mayelana nemikhiqizo yethu.