Ibyuma bizunguruka ni ibice by'ingenzi bikoreshwa cyane mu buhanga bwa mekanike, kandi imikorere yabyo igira ingaruka zitaziguye ku buryo mashini yose yizewe. Gupima ubukana bw'ibice bizunguruka ni kimwe mu bipimo bigamije kwemeza imikorere n'umutekano. Amabwiriza Mpuzamahanga ISO 6508-1" Uburyo bwo Gupima Ubukana bw'Ibice bizunguruka" agaragaza ibisabwa mu gupima ubukana bw'ibice, harimo ibi bikurikira:
1. Ibisabwa ku bukomere bw'ibice by'imodoka nyuma yo gushyushya;
1）Icyuma gikoresha kromiyumu nyinshi (uruhererekane rwa GCr15):
Ubukana nyuma yo gushyushya ubusanzwe busabwa kuba buri hagati ya 60 ~ 65 HRC (igipimo cya Rockwell hardness C) ；
Ubukana buke ntibugomba kuba munsi ya HRC 60; bitabaye ibyo, ubushobozi bwo kwangirika ntibuzaba budahagije, bigatuma umuntu yangirika vuba;
Ubukana ntarengwa ntibugomba kurenza 65 HRC kugira ngo hirindwe ko ibikoresho bicika intege cyane, bishobora gutuma bicika bitewe n'umuvuduko w'ibikomere.
2）Ibikoresho byo gukoresha mu buryo bwihariye (nk'icyuma gikozwe muri kaburimbo, icyuma gikozwe mu bushyuhe bwinshi):
Icyuma gikozwe muri kaburimbo (nk'ibice 20CrNiMo): Ubukana bw'urwego rwa kaburimbo nyuma yo gukonjesha muri rusange ni 58 ~ 63 HRC, kandi ubukana bw'ibanze ni buke cyane (25 ~ 40 HRC), buhuza ubushobozi bwo kwangirika kw'ubuso n'ubukomere bw'imbere;
Icyuma gishyushya cyane (nka Cr4Mo4V): Nyuma yo gushyushya ahantu hari ubushyuhe bwinshi, ubukana bukunze kuguma kuri 58 ~ 63 HRC kugira ngo buhuze n'ibisabwa kugira ngo budashira mu bushyuhe bwinshi.
2. Ibisabwa ku bukomere bw'ibice by'imodoka nyuma yo gushyushya ubushyuhe bwinshi ；
200°C Umupira w'icyuma 60 – 63HRC 62 – 66HRC Roller61 – 65 HRC
225°C Umupira w'icyuma 59 – 62HRC 62 – 66HRC Roller61 – 65 HRC
250°C Umupira w'icyuma wa 58 – 62HRC 58 – 62HRC Roller58 – 62 HRC
300°C Umupira w'icyuma 55 – 59HRC 56 – 59HRC Roller 55 – 59 HRC
3. Ibisabwa by'ibanze ku bipimo byapimwe mu gupima ubukana, ndetse n'ibipimo bitandukanye byo gupima nko guhitamo uburyo bwo gupima ubukana, imbaraga zo gupima, n'aho ikizamini giherereye.
1）Ingufu zo gupima Rockwell hard tester: 60kg, 100kg, 150kg (588.4N, 980.7N, 1471N)
Ingano y'imbaraga zo gupima ya Vickers hardness tester ni nini cyane: 10g ~ 100kg (0.098N ~ 980.7N)
Imbaraga zo gupima Leeb hard tester: Ubwoko bwa D ni bwo buryo bukoreshwa cyane mu gupima imbaraga (ingufu z'ingaruka), bukwiriye ibice byinshi by'icyuma bisanzwe
2）Reba ishusho iri hepfo kugira ngo ubone uburyo bwo gupima
| Nimero y'uruhererekane | Ibisobanuro by'igice | Uburyo bwo gupima | Ibitekerezo |
| 1 | D< 200 | HRA, HRC | HRC ihabwa umwanya w'ibanze |
| bₑ≥1.5 | |||
| Dw≥4.7625~60 | |||
| 2 | bₑ<1.5 | HV | Ishobora kugeragezwa ako kanya cyangwa nyuma yo kuyishyiraho |
| Dw<4.7625 | |||
| 3 | D ≥ 200 | HLD | Ibice byose by'umuvuduko bidashobora gupimwa ubukana ku gikoresho gipima ubukana cya benchtop bishobora gupimwa hakoreshejwe uburyo bwa Leeb |
| bₑ ≥ 10 | |||
| Dw≥ 60 | |||
| Icyitonderwa: Niba umukoresha afite ibisabwa byihariye byo gupima ubukana, ubundi buryo bushobora gutoranywa kugira ngo apime ubukana. | |||
| Nimero y'uruhererekane | Uburyo bwo gupima | Ibipimo by'igice/mm | Imbaraga z'igerageza/N |
| 1 | HRC | bₑ ≥ 2.0, Dw≥ 4.7625 | 1471.0 |
| 2 | HRA | bₑ > 1.5 ~ 2.0 | 588.4 |
| 3 | HV | bₑ > 1.2 ~ 1.5, Dw≥ 2.0 ~ 4.7625 | 294.2 |
| 4 | HV | bₑ > 0.8 ~ 1.2, Dw≥ 1 ~ 2 | 98.07 |
| 5 | HV | bₑ > 0.6 ~ 0.8, Dw≥ 0.6 ~ 0.8 | 49.03 |
| 6 | HV | bₑ < 0.6, Dw< 0.6 | 9.8 |
| 7 | HLD | bₑ ≥ 10, Dw≥ 60 | 0.011 J (Joule) |
Kuva byashyirwa mu bikorwa mu 2007, uburyo bwo gupima bwavuzwe muri iri hame bwakoreshejwe cyane mu kugenzura ubuziranenge bw'ibikorwa byo gukora mu bigo bitanga umusaruro.
Igihe cyo kohereza: Kanama-20-2025
