Iyo inonyanya kushandiswa mukugadzirwa ndiko kuomarara kwekudzvinyirira-nenzira, senge kuomarara kwebrinell, kuomarara kwehombodo, kuomarara uye kuomesa musoro. Iyo yakawana kuomesa kukosha kwakanyatsoomiririra kuramba kwesimbi pamusoro peiyo plastmation deformation inokonzerwa nekupindira kwezvinhu zvekunze.
Izvi zvinotevera chiratidzo chepfupi kune dzakasiyana siyana zvikamu:
1. Kuomarara kweBrinell (HB)
Dzvanya bhora rakaomeswa simbi yeimwe saizi (kazhinji 10mm mune diameter) mumusoro wezvinhu zvine mumwe mutoro (kazhinji 3000kg) uye chengetedza kwenguva yakati rebei. Mushure mekunge mutoro wabviswa, iyo chiyero chemutoro kune iyo induction nzvimbo ndeye brinell hardness kukosha (HB), mumutemo weKilogy / mm2 (N / MM2).
2. Rockwell Hardness (HR)
Kana hb> 450 kana sampuli idiki, brinell hardness bvunzo haigone kushandiswa uye kuomarara kuomarara kwechiyero kunofanirwa kushandiswa pachinzvimbo. Inoshandisa madhaimani cone ine vertex angle ye120 ° kana bhora resimbi neyakagadzirwa neyakaedzwa pasi peimwe mutoro, uye kuomarara kwezvinhu zvinowanikwa kubva pakadzika kwekudzika. Zvinoenderana nekuomesa kwezvinhu zvekuyedza, zvinogona kuratidzwa muzviyero zvitatu zvakasiyana:
Hra: Iyo kuomarara kunowanikwa nekushandisa 60kg mutoro wedare uye madhaimondi cone indender, uye inoshandiswa kune zvigadzirwa zvine hupfu hwakanyanya kuomesesa (senge carmide, nezvimwewo).
HRB: Iko kuomarara kunowanikwa nekushandisa iyo 100kg mutoro weGoogle uye bhora rakaomeswa nedhiri re1.58mm. Iyo inoshandiswa kune zvigadzirwa zvine kuomarara kuomesa (senge simbi yakavanzika, yakakanda iron, nezvimwewo).
HRC: Iko kuomarara kunowanikwa nekushandisa iyo 150kg mutoro wezana uye diamondi cone indender, uye inoshandiswa kune zvigadzirwa zvine hupfumi hwakanyanya (hwakadai seSimbi yakaoma, nezvimwewo).
3 Vickers kuomesa (HV)
Shandisa Diamond Square Cone
Kuenzaniswa neBlinell uye Rockwell Hardness bvunzo, Vickers kuomesa bvunzo kune zvakawanda zvakanakira. Iyo haina mafungiro emamiriro ezvinhu akafungidzirwa ekutakura P uye indenter diameter d sebroll, uye dambudziko rekusvibiswa kweanonyora; uyezve hazvina dambudziko kuti kukosha kwekuomarara kweanodzora hakugone kubatanidzwa. Uye inogona kuyedza chero zvinhu zvakapfava kunge Rockwell, uye inogona kuyedza kuomarara kwezvinhu zvakanyanyisa zvikamu (kana matete akaonda) zviri nani pane rockwell, iyo inogona kungoitwa neDombowell mamiriro. Asi kunyangwe mumamiriro ezvinhu akadaro, inogona kungoenzaniswa mukati meiyo rockwell chiyero, uye haigone kuverengerwa pamwe nedzimwe nhanho dzakaomarara. Mukuwedzera, nekuti rockwell inoshandisa kudzika kwenyama seyendex indekisi, uye kudzika kwenyama nguva dzose kuri kushoma pane kuenzana kwehupamhi, saka kukanganisa kwaro kwakakurawo. Naizvozvo, dombo redhiwedhi rakaomarara harina kugadzikana sebrinell uye vickers, uye zvechokwadi kwete seyakagadzikana seyakagadziriswa.
Pane imwezve hukama hwekushandura pakati pebrinell, Rockwell uye vickers, uye pane iyo tashanduko yeukama tafura inogona kubvunzwa.
Kutumira Nguva: Mar-16-2023
