Thaum kuaj qhov nyuaj ntawm cov hlau carbon uas muaj qhov nyuaj qis dua, peb yuav tsum xaiv lub tshuab ntsuas qhov nyuaj kom tsim nyog kom ntseeg tau tias cov txiaj ntsig ntawm kev xeem yog qhov tseeb thiab ua tau zoo. Peb tuaj yeem xav txog kev siv HRB nplai ntawm Rockwell hardness tester.
Qhov ntsuas HRB ntawm Rockwell hardness tester siv lub pob hlau indenter nrog lub cheeb ntawm 1.588 hli thiab lub zog xeem sib phim ntawm 100KG. Qhov ntsuas ntau ntawm HRB nplai yog teeb tsa ntawm 20-100HRB, uas yog qhov tsim nyog rau kev sim qhov nyuaj ntawm feem ntau cov khoom siv carbon steel puag ncig nrog qhov nyuaj qis dua.
1. Yog tias cov hlau carbon puag ncig tau raug quenched thiab muaj qhov nyuaj siab txog li HRC40 - HRC65, koj yuav tsum xaiv lub Rockwell hardness tester. Lub Rockwell hardness tester yooj yim thiab ceev rau kev khiav lag luam, thiab tuaj yeem nyeem qhov nyuaj ncaj qha, uas yog qhov tsim nyog rau kev ntsuas cov khoom siv hardness siab.
2. Rau qee cov hlau carbon uas tau kho nrog carburizing, nitriding, thiab lwm yam, qhov nyuaj ntawm qhov chaw siab thiab qhov nyuaj ntawm lub hauv paus qis. Thaum nws tsim nyog los ntsuas qhov nyuaj ntawm qhov chaw kom raug, Vickers hardness tester lossis microhardness tester tuaj yeem xaiv tau. Qhov indentation ntawm Vickers hardness test yog square, thiab tus nqi hardness yog xam los ntawm kev ntsuas qhov ntev ntawm kab pheeb ces kaum. Qhov tseeb ntawm kev ntsuas yog siab thiab tuaj yeem cuam tshuam qhov kev hloov pauv ntawm qhov nyuaj ntawm cov khoom siv.
3. Ntxiv rau qhov ntsuas HRB ntawm lub Rockwell hardness tester, lub Brinell hardness tester kuj tseem siv tau los sim cov khoom siv carbon steel puag ncig uas tsis muaj zog. Thaum sim cov hlau puag ncig carbon, nws lub indenter yuav tawm hauv qhov chaw loj ntawm qhov indentation ntawm qhov chaw ntawm cov khoom, uas tuaj yeem qhia meej dua thiab ua kom pom tseeb qhov nruab nrab ntawm cov khoom. Thaum lub sijhawm ua haujlwm ntawm lub hardness tester, lub Brinell hardness tester tsis ceev thiab yooj yim npaum li lub Rockwell hardness tester. Lub Brinell hardness tester yog HBW scale, thiab cov indenters sib txawv phim lub zog sim. Rau cov hlau puag ncig carbon steel uas feem ntau tsis muaj zog, xws li cov uas nyob hauv lub xeev annealed, qhov nyuaj feem ntau yog nyob ib puag ncig HB100 - HB200, thiab lub Brinell hardness tester tuaj yeem xaiv tau.
4. Rau cov hlau carbon puag ncig uas muaj txoj kab uas hla loj thiab cov duab zoo li qub, feem ntau siv tau ntau yam kev ntsuas qhov nyuaj. Txawm li cas los xij, yog tias txoj kab uas hla ntawm cov hlau puag ncig me me, xws li tsawg dua 10 hli, Brinell hardness tester yuav cuam tshuam rau qhov tseeb ntawm kev ntsuas vim yog qhov indentation loj. Lub sijhawm no, Rockwell hardness tester lossis Vickers hardness tester tuaj yeem xaiv tau. Lawv qhov loj me me dua thiab tuaj yeem ntsuas qhov nyuaj ntawm cov qauv me me kom raug dua.
5. Rau cov hlau puag ncig uas tsis sib xws uas nyuaj rau tso rau ntawm lub rooj ua haujlwm ntawm lub tshuab ntsuas qhov nyuaj ib txwm muaj rau kev ntsuas, lub tshuab ntsuas qhov nyuaj uas nqa tau, xws li lub tshuab ntsuas qhov nyuaj Leeb, tuaj yeem xaiv tau. Nws siv lub cuab yeej cuam tshuam los xa lub cev cuam tshuam mus rau qhov chaw ntawm cov khoom uas raug ntsuas, thiab xam tus nqi nyuaj raws li qhov ceev uas lub cev cuam tshuam rov qab los. Nws yooj yim rau kev khiav lag luam thiab tuaj yeem ua qhov ntsuas ntawm qhov chaw ua haujlwm ntawm ntau yam duab thiab qhov ntau thiab tsawg.
Lub sijhawm tshaj tawm: Plaub Hlis-14-2025
