Cov ncauj lus kom ntxaws qhia txog cov kav hlau stainless

tawv
Stainless hlau kav feem ntau siv Brinell, Rockwell, thiab Vickers hardness indicators, As ntsuas lawv hardness.
Brinell hardness
Ntawm cov qauv rau cov kav hlau tsis muaj steel, Brinell hardness yog siv dav tshaj plaws, thiab qhov nyuaj ntawm cov khoom feem ntau sawv cev los ntawm txoj kab uas hla ntawm indentation, uas yog ob qho tib si intuitive thiab yooj yim. Txawm li cas los xij, nws tsis haum rau cov kav hlau uas ua los ntawm cov tawv tawv los yog nyias nyias.
Rockwell hardness
Lub Rockwell nplai ntawm stainless hlau yeeb nkab yog tib yam li Brinell nplai, uas yog ib qho kev ntsuas indentation. Qhov txawv yog tias nws ntsuas qhov tob ntawm qhov indentation. Rockwell scale yog ib txoj kev siv dav nyob rau tam sim no, uas HRC tsuas yog thib ob rau Brinell hardness HB hauv cov qauv steel yeeb nkab. Rockwell hardness yog tsim los ntsuas cov ntaub ntawv hlau los ntawm mos heev mus rau qhov nyuaj heev. Nws them nyiaj rau qhov tsis txaus ntawm Brinell txoj kev thiab yooj yim dua li Brinell txoj kev. Nws tuaj yeem ncaj qha nyeem tus nqi hardness ntawm lub dial ntawm lub tshuab hardness. Txawm li cas los xij, vim nws qhov me me indentation, tus nqi hardness tsis yog raws li txoj kev Brinell.
Vickers hardness
Vickers hardness test ntawm stainless hlau yeeb nkab kuj yog ib qho kev ntsuas indentation, uas tuaj yeem siv los ntsuas qhov nyuaj ntawm cov ntaub ntawv hlau nyias thiab cov txheej txheem saum npoo. Nws muaj qhov zoo ntawm Brinell thiab Rockwell txoj hauv kev thiab kov yeej lawv qhov tsis zoo, tab sis nws tsis yooj yim li Rockwell txoj kev, thiab Vickers txoj kev tsis tshua muaj siv nyob rau hauv steel yeeb nkab qauv.
Kev sim hardness
Annealed stainless hlau kav nrog ib txoj kab uas hla ntawm ntau tshaj 6. non-destructive qualification soj ntsuam ntawm stainless hlau kav. Cov kav hlau tsis muaj steel nrog lub taub sab hauv siab dua 30mm thiab phab ntsa thickness ntau dua 1.2 hli raug kuaj rau HRB thiab HRC hardness siv Rockwell hardness tester. Stainless hlau kav nrog ib txoj kab uas hla loj dua 30 hli thiab phab ntsa thickness tsawg dua 1.2 hli yog kuaj rau HRT los yog HRN hardness siv lub nto Rockwell hardness tester. Stainless hlau kav nrog ib txoj kab uas hla sab hauv tsawg dua 0mm thiab ntau dua 4.8mm yog kuaj rau HR15T hardness siv lub siab Rockwell hardness tester rau cov kav dej. Thaum txoj kab uas hla ntawm cov yeeb nkab steel hlau tsis ntau tshaj 26 hli, lub Rockwell lossis nto Rockwell hardness tester kuj tuaj yeem siv los ntsuas qhov tawv ntawm phab ntsa ntawm cov yeeb nkab.