Rockwell Knoop thiab Vickers hardness test txoj kev rau txhuas nitride ceramics thiab kev sim rau hlau dov bearings

1.Rockwell Knoop Vickers hardness test method rau txhuas nitride ceramics
Txij li cov ntaub ntawv ceramic muaj cov qauv nyuaj, yog qhov nyuaj thiab nkig, thiab muaj cov yas me me deformation, feem ntau siv cov txheej txheem hardness qhia suav nrog Vickers hardness, Knoop hardness thiab Rockwell hardness. Shancai tuam txhab muaj ntau yam hardness testers, nrog rau sib txawv hardness testers thiab ntau yam hardness testers.
Cov qauv hauv qab no tuaj yeem siv tau raws li kev siv:
GB / T 230.2 Hlau Cov Khoom Siv Rockwell Hardness Test:
Muaj ntau Rockwell hardness nplai, thiab cov ntaub ntawv ceramic feem ntau siv HRA lossis HRC nplai.
GB/T 4340.1-1999 Hlau Vickers hardness test thiab GB/T 18449.1-2001 Hlau Knoop hardness test.
Txoj kev ntsuas Knoop thiab Micro-Vickers yog qhov zoo ib yam, qhov sib txawv yog qhov sib txawv indenters siv.
Nws yog tsim nyog sau cia tias vim qhov tshwj xeeb ntawm cov khoom, peb tuaj yeem tshem tawm Vickers indentations tsis raug raws li lub xeev ntawm indentation thaum ntsuas kom tau txais cov ntaub ntawv raug ntau dua.
2.Testing txoj kev rau hlau dov bearings
Raws li txoj kev sim hardness rau steel thiab nonferrous hlau bearing qhov chaw teev nyob rau hauv JB / T7361-2007, muaj ntau ntau txoj kev xeem raws li cov txheej txheem workpiece, tag nrho cov uas yuav raug kuaj nrog ib tug Shancai hardness tester:
1) Vickers hardness test method
Feem ntau, nto hardened bearing qhov chaw raug kuaj los ntawm Vickers hardness kuaj txoj kev. Kev saib xyuas yuav tsum tau them rau qhov ua tiav ntawm qhov chaw ua haujlwm thiab xaiv qhov kev xeem quab yuam.
2) Rockwell hardness test method
Rockwell hardness test feem ntau yog ua los ntawm HRC nplai. Shancai Rockwell hardness tester tau sau 15 xyoo ntawm kev paub thiab tuaj yeem ua tau raws li txhua qhov kev xav tau.
3) Leeb hardness test method
Leeb hardness test yuav siv tau rau cov bearings uas ntsia los yog nyuaj rau disassemble. Nws qhov ntsuas qhov tseeb tsis zoo li qhov ntawm lub rooj zaum hardness tester.
Cov qauv no tsuas yog siv tau rau kev sim hardness ntawm steel bearing qhov chaw, annealed thiab tempered bearing qhov chaw thiab tiav bearing qhov chaw nrog rau cov uas tsis yog-ferrous hlau bearing qhov chaw.