Kev xaiv cov cuab yeej ntsuas tshuab rau cam khwb cia hlau nres khau yuav tsum ua raws li tus qauv: ICS 45.060.20. Cov txheej txheem no qhia tau hais tias kev ntsuam xyuas cov cuab yeej cuab tam tau muab faib ua ob ntu:
1.Tensile Test
Nws yuav tsum tau ua raws li cov kev cai ntawm ISO 6892-1: 2019. Qhov ntev thiab kev ua tau zoo ntawm cov qauv tensile yuav tsum ua tau raws li ISO 185: 2005.
2.Hardness Test Method
Nws yuav tsum tau ua raws li ISO 6506-1: 2014. Hardness specimens yuav tsum tau txiav los ntawm lub qis ib nrab ntawm lub cais cam khwb cia kuaj bar; Yog tias tsis muaj qhov ntsuas ntsuas, ib qho khau yuav tsum tau muab, 6mm - 10mm yuav tsum tau npaj tawm ntawm nws sab, thiab qhov hardness yuav tsum ntsuas ntawm 4 cov ntsiab lus ntsuas, nrog rau qhov nruab nrab tus nqi yog qhov ntsuas tau.
Lub hauv paus rau Hardness Test Method
TS EN ISO 6506-1: 2014 "Cov Khoom Siv Hlau - Brinell Hardness Test - Ntu 1: Txoj Kev Xeem" qhia txog lub hauv paus ntsiab lus, cov cim thiab cov lus piav qhia, cov khoom siv ntsuas, cov qauv, cov txheej txheem kuaj, tsis paub meej ntawm cov txiaj ntsig thiab cov ntawv xeem rau Brinell hardness test ntawm cov khoom siv hlau.
2.1 Kev Xaiv Cov Khoom Siv Xeem: Brinell Hardness Tester (pom zoo ua ntej)
Qhov zoo: Qhov chaw indentation yog qhov loj, uas tuaj yeem cuam tshuam tag nrho hardness ntawm cov khoom siv hlau cam khwb cia (cov hlau cam khwb cia yuav muaj cov qauv tsis sib xws), thiab cov txiaj ntsig tau muaj ntau tus neeg sawv cev.
Nws yog tsim rau nruab nrab thiab qis hardness cam khwb cia hlau (HB 80 - 450), uas tag nrho npog cov hardness ntau yam ntawm cam khwb cia hlau nres khau.
Kev ua haujlwm yog qhov yooj yim, thiab qhov yuav tsum tau ua kom tiav ntawm cov qauv yog qhov tsawg (feem ntau Ra 1.6 - 6.3μm txaus).
2.2 Txoj Cai ntawm Brinell Hardness Test
Lub hauv paus ntsiab lus tuaj yeem ua tiav raws li hauv qab no: Lub pob tawv tawv (lossis quenched steel pob) nrog txoj kab uas hla ntawm 10mm yog nias rau saum npoo ntawm cov qauv hauv qab qee qhov kev sim quab yuam (xws li 3000kgf). Tom qab ntsuas txoj kab uas hla indentation, tus nqi hardness (HBW) yog xam los ua tus yam ntxwv ntawm cov khoom muaj peev xwm tiv thaiv cov yas deformation. Nws cov txiaj ntsig tseem ceeb yog nyob rau hauv qhov muaj zog sawv cev ntawm cov txiaj ntsig, uas tuaj yeem cuam tshuam cov yam ntxwv macroscopic hardness ntawm cov khoom. Nws yog ib tug classic txoj kev dav siv nyob rau hauv kev ua tau zoo ntawm cov khoom siv hlau.
2.3 Cov cim thiab cov lus piav qhia ntawm Brinell Hardness tus nqi
Cov ntsiab lus tseem ceeb ntawm Brinell hardness tus nqi (HBW) yog: qhov sib piv ntawm qhov ntsuas quab yuam (F) rau qhov chaw indentation deg (A), nrog rau chav tsev ntawm MPa (tab sis feem ntau chav tsev tsis raug cim, thiab tsuas yog tus lej siv xwb). Cov mis laij lej yog raws li nram no: HBW = πD(D−D2−d2)2 × 0.102 × F
Qhov twg:
F yog qhov kev xeem quab yuam (unit: N);
D yog indenter txoj kab uas hla (unit: mm);
d yog qhov nruab nrab txoj kab uas hla ntawm indentation (unit: mm);
Qhov coefficient "0.102" yog qhov hloov pauv tau siv los hloov qhov ntsuas qhov ntsuas ntawm kgf mus rau N (yog tias xam ncaj qha hauv N, cov qauv tuaj yeem yooj yim).
Nws tuaj yeem pom los ntawm cov qauv uas nyob rau hauv tib lub zog ntsuas thiab indenter txoj kab uas hla, qhov me me ntawm indentation txoj kab uas hla, lub zog ntawm cov khoom muaj peev xwm tiv taus cov yas deformation, thiab qhov siab dua Brinell hardness tus nqi; conversely, qhov qis dua tus nqi hardness.
Raws li cov khoom yam ntxwv ntawm cam khwb cia hlau nres khau (grey cam khwb cia hlau), qhov tsis muaj Brinell hardness test feem ntau yog raws li nram no:
Test quab yuam (F): Feem ntau, 3000kgf (29.42kN) yog siv, thiab cov cim hardness yog "HBW 10/3000".
Lus Cim: Yog tias cov qauv nyias nyias lossis cov khoom muag muag, lub zog ntsuas tuaj yeem hloov kho (xws li 1500kgf lossis 500kgf) raws li ISO 6506-1: 2014, tab sis qhov no yuav tsum tau qhia hauv daim ntawv xeem.
Post lub sij hawm: Aug-26-2025
