Muaj ntau ntau hom ntaub ntawv steel, nrog rau cov ntaub ntawv fitter, pom cov ntaub ntawv, cov ntaub ntawv shaping, cov ntaub ntawv tshwj xeeb zoo li, cov ntaub ntawv watchmaker, tshwj xeeb watchmaker cov ntaub ntawv, thiab cov ntaub ntawv ntoo. Lawv txoj kev sim hardness feem ntau ua raws li tus txheej txheem thoob ntiaj teb ISO 234-2: 1982 Steel Files thiab Rasps - Ntu 2: Cov yam ntxwv ntawm Kev Txiav.
Tus txheej txheem thoob ntiaj teb qhia txog ob txoj kev sim: Rockwell hardness method thiab Vickers hardness method.
1. Rau Rockwell hardness method, Rockwell C nplai (HRC) feem ntau yog siv, thiab qhov yuav tsum tau hardness feem ntau yog siab tshaj 62HRC. Thaum lub hardness kuj siab, Rockwell A nplai (HRA) kuj tuaj yeem siv rau kev sim, thiab tus nqi hardness yog tau los ntawm kev hloov dua siab tshiab. Lub hardness ntawm cov ntaub ntawv tuav ( cheeb tsam accounting rau peb-tsib tsib ntawm tag nrho ntev pib los ntawm lub kov kov) yuav tsum tsis txhob siab tshaj 38HRC, thiab hardness ntawm cov ntaub ntawv ntoo yuav tsum tsis txhob qis dua 20HRC.
2.Lub Vickers hardness tester kuj tseem siv tau rau kev sim, thiab tus nqi sib thooj hardness yuav tsum tau los ntawm kev hloov dua siab tshiab tom qab kev sim. Vickers hardness yog tsim rau kev kuaj cov ntaub ntawv steel nrog nyias txheej los yog tom qab kho deg. Rau cov ntaub ntawv steel kho nrog kev kho cua sov saum npoo los yog kev kho cua sov, lawv cov hardness yuav tsum raug kuaj ntawm qhov khoob khoob 5 hli mus rau 10 hli ntawm qhov kawg ntawm cov ntaub ntawv txiav.
Lub hardness ntawm cov hniav yuav tsum nyob nruab nrab ntawm 55 HRC thiab 58 HRC, uas yog haum rau kev ntsuam xyuas los ntawm Vickers hardness txoj kev. Yog tias muaj txoj haujlwm tsim nyog, lub workpiece tuaj yeem muab tso ncaj qha rau ntawm qhov chaw ua haujlwm ntawm Vickers hardness tester rau qhov kev xeem. Txawm li cas los xij, feem ntau workpieces tsis tuaj yeem ntsuas ncaj qha; Nyob rau hauv xws li mob, peb yuav tsum tau npaj cov qauv ntawm cov workpieces ua ntej. Cov txheej txheem kev npaj muaj xws li metallographic txiav tshuab, metallographic sib tsoo & polishing tshuab, thiab metallographic mounting xovxwm. Tom qab ntawd, muab cov qauv npaj rau ntawm Vickers hardness tester workbench rau kev sim.
Nws yuav tsum raug sau tseg tias qhov kev sim hardness ntawm cov ntaub ntawv kov tuaj yeem tsuas yog nqa tawm thaum lub npoo tau ua tiav kom tau raws li qhov kev xeem; tshwj tsis yog rau cov kev cai ntawm tus qauv no, qhov kev sim hardness ntawm cov ntaub ntawv hlau yuav tsum ua raws li cov kev cai ntawm ISO 6508 thiab ISO 6507-1.
Post lub sij hawm: Sep-24-2025
