Peb hom hardness ntawm stainless hlau yeeb fittings:
1. Rockwell hardness
Rockwell hardness test ntawm stainless hlau yeeb nkab fittings yog tib yam li Brinell hardness test, uas yog ib qho indentation test method. Qhov txawv yog tias nws ntsuas qhov tob ntawm qhov indentation. Rockwell hardness test tam sim no yog ib txoj kev siv dav. Ntawm lawv, HRC tsuas yog thib ob rau Brinell hardness HB hauv cov qauv steel yeeb nkab. Cov khoom siv hlau hnyav heev, nws ua rau qhov tsis txaus ntawm Brinell txoj kev, uas yooj yim dua li Brinell txoj kev, thiab tus nqi hardness tuaj yeem nyeem ncaj qha los ntawm lub xov tooj 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.
2. Brinell hardness
Nyob rau hauv cov qauv ntawm stainless hlau yeeb fittings, Brinell hardness yog feem ntau lug siv. Lub indentation txoj kab uas hla feem ntau yog siv los qhia cov hardness ntawm cov khoom, uas yog intuitive thiab yooj yim, tab sis nws tsis haum rau ib tug nyuaj los yog thinner steel kav.
3. Vickers hardness
Vickers hardness test ntawm stainless hlau yeeb nkab fittings kuj yog ib txoj kev kuaj indentation, uas yuav siv tau los txiav txim siab hardness ntawm nyias hlau cov ntaub ntawv thiab nto txheej. Nws muaj qhov zoo ntawm Brinell thiab Rockwell txoj hauv kev, thiab kov yeej lawv cov kev tsis txaus ntseeg, tab sis tsis zoo li Txoj Kev Rockwell yog qhov yooj yim, thiab Vickers txoj kev tsis tshua siv nyob rau hauv steel yeeb nkab qauv.
4. Kev sim hardness
Rau annealed stainless hlau kav nrog ib txoj kab uas hla ntawm 6. Nws yog qhov ceev heev thiab yooj yim rau kev sim, thiab yog qhov tsim nyog rau kev soj ntsuam ceev thiab tsis muaj kev puas tsuaj ntawm cov kav hlau stainless. Rau cov kav hlau tsis muaj steel nrog lub taub sab hauv siab dua 30mm thiab phab ntsa tuab dua 1.2mm, siv Rockwell hardness tester los ntsuas qhov hardness ntawm HRB thiab HRC. Rau cov kav hlau tsis muaj steel nrog ib txoj kab uas hla ntau dua 30mm thiab phab ntsa thickness tsawg dua 1.2mm, siv lub ntsej muag Rockwell hardness tester los ntsuas qhov hardness ntawm HRT lossis HRN. Rau cov kav dej stainless hlau nrog lub taub sab hauv tsawg dua 0mm thiab ntau dua 4.8mm, siv lub Rockwell hardness tester tshwj xeeb rau cov kav dej los ntsuas qhov hardness ntawm HR15T, Thaum lub puab txoj kab uas hla ntawm stainless hlau yeeb nkab yog ntau tshaj 26mm, hardness ntawm lub Sab hauv phab ntsa ntawm cov yeeb nkab kuj tuaj yeem kuaj nrog Rockwell lossis Rockwell hardness tester.