Yuav ua li cas los xyuas seb lub hardness tester ua haujlwm li cas?
1.Lub hardness tester yuav tsum tau kuaj xyuas tag nrho ib hlis ib zaug.
2. Lub chaw teeb tsa ntawm lub hardness tester yuav tsum tau khaws cia rau hauv qhov chaw qhuav, tsis muaj kev vibration thiab tsis muaj corrosive, thiaj li ua kom qhov tseeb ntawm qhov ntsuas thaum ntsuas thiab kev ruaj ntseg thiab kev ntseeg siab ntawm tus nqi thaum lub sij hawm sim.
3. Thaum lub hardness tester ua hauj lwm, nws tsis tau tso cai rau ncaj qha mus kov lub saum npoo ntawm cov hlau yuav tsum tau ntsuas los tiv thaiv kev ntsuas tsis raug cai los yog puas lub pob zeb diamond cone indenter ntawm lub taub hau ntawm hardness tester.
4. Thaum lub sij hawm siv lub pob zeb diamond indenter, nws yog ib qho tsim nyog los tshuaj xyuas qhov chaw tiav ntawm lub indenter ib xyoos ib zaug.Tom qab txhua qhov ntsuas, lub indenter yuav tsum muab tso rau hauv lub thawv tshwj xeeb rau kev khaws cia.
Hardness tester ceev faj:
Ntxiv nrog rau kev ceev faj tshwj xeeb thaum siv ntau yam hardness testers, muaj qee qhov teeb meem uas yuav tsum tau them sai sai rau, uas tau teev tseg hauv qab no:
1. Lub hardness tester nws tus kheej yuav tsim tau ob hom kev ua yuam kev: ib qho yog qhov yuam kev los ntawm qhov deformation thiab txav ntawm nws qhov chaw;lwm qhov yog qhov yuam kev tshwm sim los ntawm hardness parameter tshaj li tus qauv teev.Rau qhov yuam kev thib ob, lub hardness tester yuav tsum tau calibrated nrog tus qauv thaiv ua ntej ntsuas.Rau qhov ntsuas ntsuas ntawm Rockwell hardness tester, qhov sib txawv yog tsim nyog nyob rau hauv ± 1.Kev kho tus nqi tuaj yeem muab rau tus nqi ruaj khov nrog qhov sib txawv hauv ± 2.Thaum qhov sib txawv ntawm qhov sib txawv ntawm ± 2, nws yog ib qho tsim nyog los ntsuas thiab kho cov hardness tester los yog hloov mus rau lwm txoj kev kuaj hardness.
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 lub hardness siab dua HRB100, HRC nplai yuav tsum tau siv rau kev xeem;Thaum lub hardness qis dua HRC20, HRB nplai yuav tsum tau siv rau kev sim.Vim hais tias qhov tseeb thiab rhiab heev ntawm hardness tester tsis zoo thaum qhov ntsuas ntau dhau, thiab tus nqi hardness tsis raug, nws tsis haum rau kev siv.Lwm txoj hauv kev sim hardness kuj muaj cov qauv calibration zoo.Cov txheej txheem thaiv siv los ntsuas qhov hardness tester tsis tuaj yeem siv rau ntawm ob sab, vim tias qhov tawv ntawm tus qauv sab thiab sab nraub qaum tsis tas yuav tsum zoo ib yam.Nws feem ntau tau teev tseg tias tus qauv thaiv yog siv tau nyob rau hauv ib xyoos txij li hnub calibration.
2. Thaum hloov lub indenter lossis anvil, ua tib zoo saib xyuas qhov chaw sib cuag.Tom qab hloov nws, sim nws ob peb zaug nrog ib tug qauv steel ntawm ib tug tej yam hardness kom txog rau thaum lub hardness tus nqi tau txais ob zaug ua ke yog tib yam.Lub hom phiaj yog ua kom lub indenter lossis anvil thiab qhov chaw sib cuag ntawm lub tshuab ntsuas kom nruj thiab sib cuag zoo, thiaj li tsis cuam tshuam rau qhov tseeb ntawm qhov kev xeem.
3. Tom qab lub hardness tester raug kho, thaum pib ntsuas qhov hardness, thawj qhov ntsuas tsis siv.Rau kev ntshai ntawm kev sib cuag tsis zoo ntawm tus qauv thiab lub dab teg, qhov ntsuas tus nqi tsis raug.Tom qab thawj lub ntsiab lus raug kuaj thiab lub hardness tester nyob rau hauv ib txwm ua hauj lwm mechanism lub xeev, tus qauv yog raug kuaj thiab ntsuas hardness tus nqi raug kaw.
4. Yog tias daim ntawv xeem tso cai, feem ntau xaiv qhov sib txawv los kuaj yam tsawg kawg peb qhov hardness qhov tseem ceeb, coj tus nqi nruab nrab, thiab coj tus nqi nruab nrab raws li tus nqi hardness ntawm daim ntawv xeem.
5. Rau cov ntawv xeem nrog cov duab nyuaj, cov ntaub qhwv ntawm cov duab sib thooj yuav tsum tau siv, thiab lawv tuaj yeem kuaj tau tom qab kho.Lub voj voog ntsuas feem ntau muab tso rau hauv V-shaped zawj rau kev sim.
6. Ua ntej thauj khoom, xyuas seb qhov chaw thau khoom puas tau muab tso rau hauv qhov chaw thau khoom.Thaum thauj khoom, qhov kev txiav txim yuav tsum yog lub teeb thiab ruaj khov, thiab tsis txhob siv lub zog ntau dhau.Tom qab kev thauj khoom, lub chaw thau khoom yuav tsum tau muab tso rau hauv qhov chaw thau khoom, txhawm rau tiv thaiv lub ntsuas ntsuas los ntawm kev thauj khoom ntev, ua rau cov yas deformation thiab cuam tshuam rau qhov ntsuas qhov tseeb.
Vickers, Rockwell hardness
Hardness: Nws yog lub peev xwm ntawm cov khoom siv los tiv thaiv cov yas deformation hauv zos, thiab feem ntau yog ntsuas los ntawm txoj kev indentation.
Lus Cim: Qhov tseem ceeb ntawm hardness tsis tuaj yeem sib piv ncaj qha nrog ib leeg, thiab tsuas yog hloov pauv 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 koom nrog kev tsim ntawm ob lub teb chaws tus qauv.
1. GB/T 230.2-2022: "Metallic Materials Rockwell Hardness Test Part 2: Kev Tshuaj Xyuas thiab Kev Ntsuas ntawm Hardness Testers thiab Indenters"
2. GB/T 231.2-2022: "Cov Khoom Siv Hlau Brinell Hardness Test Part 2: Kev Tshuaj Xyuas thiab Kev Ntsuas Cov Khoom Siv Hardness"
Hauv xyoo 2021, Shandong Shancai tau koom nrog kev tsim kho qhov tsis siv neeg hauv online hardness testing project ntawm aerospace cav kav, pab txhawb rau kev lag luam aerospace ntawm motherland.
Post lub sij hawm: Dec-29-2022
