Yuav ua li cas los xyuas seb lub hardness tester ua haujlwm li qub?
1. Lub tshuab ntsuas qhov nyuaj yuav tsum tau txheeb xyuas tag nrho ib hlis ib zaug.
2. Qhov chaw teeb tsa ntawm lub tshuab ntsuas qhov nyuaj yuav tsum khaws cia rau hauv qhov chaw qhuav, tsis muaj kev co thiab tsis xeb, kom ntseeg tau tias qhov tseeb ntawm cov cuab yeej thaum lub sijhawm ntsuas thiab kev ruaj khov thiab kev ntseeg siab ntawm tus nqi thaum lub sijhawm sim.
3. Thaum lub tshuab ntsuas qhov nyuaj ua haujlwm, nws tsis raug tso cai kov qhov chaw ntawm cov hlau kom ntsuas kom tiv thaiv kev ntsuas tsis raug lossis ua puas rau lub pob zeb diamond cone indenter ntawm lub taub hau ntawm lub tshuab ntsuas qhov nyuaj.
4. Thaum siv lub tshuab txiav pob zeb diamond, yuav tsum tau kuaj xyuas qhov chaw tiav ntawm lub tshuab txiav pob zeb diamond ib xyoos ib zaug. Tom qab txhua qhov ntsuas, yuav tsum muab lub tshuab txiav pob zeb diamond tso rov qab rau hauv lub thawv tshwj xeeb kom khaws cia.
Cov kev ceev faj ntawm cov khoom siv hardness tester:
Ntxiv rau cov kev ceev faj tshwj xeeb thaum siv ntau yam kev sim tawv, muaj qee qhov teeb meem uas yuav tsum tau them sai sai rau, uas tau teev hauv qab no:
1. Lub tshuab ntsuas qhov nyuaj nws tus kheej yuav tsim ob hom kev ua yuam kev: ib qho yog qhov yuam kev los ntawm kev hloov pauv thiab kev txav ntawm nws cov khoom; qhov thib ob yog qhov yuam kev los ntawm qhov ntsuas qhov nyuaj tshaj qhov tus qauv teev tseg. Rau qhov yuam kev thib ob, lub tshuab ntsuas qhov nyuaj yuav tsum tau calibrated nrog lub thaiv txheem ua ntej ntsuas. Rau cov txiaj ntsig calibration ntawm Rockwell hardness tester, qhov sib txawv yog tsim nyog hauv ± 1. Tus nqi kho tuaj yeem muab rau tus nqi ruaj khov nrog qhov sib txawv hauv ± 2. Thaum qhov sib txawv nyob sab nraum qhov ntau ntawm ± 2, nws yog qhov tsim nyog los calibrate thiab kho lub tshuab ntsuas qhov nyuaj lossis hloov mus rau lwm txoj kev ntsuas qhov nyuaj.
Txhua qhov ntsuas ntawm Rockwell hardness muaj qhov tseeb ntawm daim ntawv thov, uas yuav tsum tau xaiv kom raug raws li cov cai. Piv txwv li, thaum qhov nyuaj siab dua HRB100, qhov ntsuas HRC yuav tsum tau siv rau kev sim; thaum qhov nyuaj qis dua HRC20, qhov ntsuas HRB yuav tsum tau siv rau kev sim. Vim tias qhov tseeb thiab qhov rhiab heev ntawm lub tshuab ntsuas qhov nyuaj tsis zoo thaum qhov ntau ntawm kev sim dhau, thiab tus nqi nyuaj tsis raug, nws tsis haum rau kev siv. Lwm txoj kev ntsuas qhov nyuaj kuj muaj cov qauv calibration sib xws. Lub thaiv txheem siv los calibrate lub tshuab ntsuas qhov nyuaj tsis tuaj yeem siv rau ob sab, vim tias qhov nyuaj ntawm sab txheem thiab sab nraub qaum tsis tas yuav zoo ib yam. Feem ntau nws tau teev tseg tias lub thaiv txheem siv tau hauv ib xyoos txij li hnub calibration.
2. Thaum hloov lub indenter lossis anvil, xyuam xim ntxuav cov khoom sib cuag. Tom qab hloov nws, sim nws ntau zaus nrog cov qauv hlau ntawm qee qhov hardness kom txog thaum tus nqi hardness tau txais ob zaug sib law liag yog tib yam. Lub hom phiaj yog ua kom lub indenter lossis anvil thiab qhov sib cuag ntawm lub tshuab kuaj nruj nreem thiab sib cuag zoo, kom tsis txhob cuam tshuam rau qhov tseeb ntawm cov txiaj ntsig xeem.
3. Tom qab kho lub tshuab ntsuas qhov nyuaj, thaum pib ntsuas qhov nyuaj, thawj qhov ntsuas tsis siv. Vim ntshai kev sib cuag tsis zoo ntawm cov qauv thiab lub anvil, tus nqi ntsuas tsis raug. Tom qab thawj qhov ntsuas tau sim thiab lub tshuab ntsuas qhov nyuaj nyob rau hauv lub xeev ua haujlwm ib txwm, cov qauv raug kuaj xyuas thiab tus nqi ntsuas qhov nyuaj tau sau tseg.
4. Yog tias daim ntawv xeem tso cai, feem ntau xaiv cov khoom sib txawv los sim tsawg kawg peb qhov ntsuas qhov nyuaj, coj tus nqi nruab nrab, thiab coj tus nqi nruab nrab ua tus nqi nyuaj ntawm daim ntawv xeem.
5. Rau cov khoom sim uas muaj cov duab sib txawv, yuav tsum siv cov ntaub qhwv uas muaj cov duab sib xws, thiab lawv tuaj yeem kuaj tau tom qab kho tiav. Feem ntau, daim khoom sim puag ncig raug muab tso rau hauv qhov V-zoo li tus qauv rau kev kuaj.
6. Ua ntej thauj khoom, xyuas seb lub tes tuav thauj khoom puas tau muab tso rau hauv qhov chaw thau khoom. Thaum thauj khoom, qhov kev nqis tes ua yuav tsum sib dua thiab ruaj khov, thiab tsis txhob siv zog ntau dhau. Tom qab thauj khoom, lub tes tuav thauj khoom yuav tsum muab tso rau hauv qhov chaw thau khoom, kom tiv thaiv cov cuab yeej kom tsis txhob raug thauj khoom ntev, ua rau cov yas deformation thiab cuam tshuam rau qhov tseeb ntawm kev ntsuas.
Vickers, Rockwell hardness
Qhov nyuaj: Nws yog lub peev xwm ntawm cov khoom siv los tiv taus cov yas deformation hauv zos, thiab nws feem ntau ntsuas los ntawm txoj kev indentation.
Lus Cim: Cov nqi hardness tsis tuaj yeem sib piv ncaj qha rau ib leeg, thiab tsuas yog hloov pauv tau los ntawm lub rooj sib piv hardness.
Xyoo 2019, Shandong Shancai Testing Instrument Co., Ltd. tau koom nrog National Testing Machine Standardization Technical Committee thiab tau koom nrog kev tsim ob lub teb chaws tus qauv.
1. GB/T 230.2-2022: "Cov Khoom Siv Hlau Rockwell Hardness Test Tshooj 2: Kev Tshuaj Xyuas thiab Kev Ntsuas Cov Khoom Siv Hardness thiab Indenters"
2. GB/T 231.2-2022: "Cov Khoom Siv Hlau Brinell Hardness Test Tshooj 2: Kev Tshuaj Xyuas thiab Calibration ntawm Hardness Testers"
Xyoo 2021, Shandong Shancai tau koom nrog kev tsim kho qhov project kuaj qhov nyuaj online ntawm cov kav dej cav aerospace, pab txhawb rau kev lag luam aerospace ntawm lub tebchaws.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-29-2022
