1. Chitsulo chozimitsidwa ndi chotenthedwa
Mayeso a kuuma kwachitsulo chozimitsidwa ndi chotenthedwa makamaka amagwiritsa ntchito Rockwell hardness tester HRC sikelo.Ngati zinthuzo ndi zoonda ndipo sikelo ya HRC siyoyenera, sikelo ya HRA ingagwiritsidwe ntchito m'malo mwake.Ngati zinthuzo ndi zoonda, masikelo olimba a Rockwell angagwiritsidwe ntchito HR15N, HR30N, kapena HR45N.
2. Pamwamba chitsulo cholimba
Pakupanga mafakitale, nthawi zina pachimake cha workpiece chimayenera kukhala cholimba bwino, pomwe pamwamba pafunikanso kukhala ndi kuuma kwakukulu komanso kukana kuvala.Pakadali pano, kuzimitsa pafupipafupi kwambiri, carburization yamankhwala, nitriding, carbonitriding ndi njira zina zimagwiritsidwa ntchito popangira mankhwala owumitsa pamtunda.Kukhuthala kwa wosanjikiza wowumitsa pamwamba nthawi zambiri kumakhala pakati pa mamilimita angapo ndi mamilimita angapo.Pazinthu zomwe zili ndi zigawo zowuma pamwamba, masikelo a HRC angagwiritsidwe ntchito kuyesa kuuma kwawo.Pazitsulo zowumitsa zapakatikati, mamba a HRD kapena HRA angagwiritsidwe ntchito.Pazigawo zopyapyala zowumitsa pamwamba, masikelo olimba a Rockwell HR15N, HR30N, ndi HR45N akuyenera kugwiritsidwa ntchito.Pazigawo zowonda kwambiri, muyenera kugwiritsa ntchito micro Vickers hardness tester kapena ultrasonic hardness tester.
3. Chitsulo chachitsulo, chitsulo chokhazikika, chitsulo chochepa
Zida zambiri zachitsulo zimapangidwa mokhazikika kapena mokhazikika, ndipo mbale zina zoziziritsa zozizira zimayikidwanso molingana ndi magawo osiyanasiyana a annealing.Kuyesa kuuma kwa zitsulo zosiyanasiyana zomangira nthawi zambiri kumagwiritsa ntchito masikelo a HRB, ndipo nthawi zina masikelo a HRF amagwiritsidwanso ntchito ngati mbale zofewa komanso zoonda.Pa mbale zoonda, zoyesera zolimba za Rockwell HR15T, HR30T, ndi HR45T ziyenera kugwiritsidwa ntchito.
4. Chitsulo chosapanga dzimbiri
Zida zachitsulo zosapanga dzimbiri nthawi zambiri zimaperekedwa m'maboma monga annealing, quenching, tempering, ndi njira yolimba.Miyezo yapadziko lonse imafotokoza za kuuma kwapamwamba ndi kutsika kofananira, ndipo kuyesa kuuma nthawi zambiri kumagwiritsa ntchito masikelo a Rockwell hardness tester HRC kapena HRB.Sikelo ya HRB idzagwiritsidwa ntchito ngati chitsulo chosapanga dzimbiri komanso chitsulo chosapanga dzimbiri, sikelo ya HRC ya Rockwell hardness tester idzagwiritsidwa ntchito ngati chitsulo chosapanga dzimbiri komanso mvula yowumitsa chitsulo chosapanga dzimbiri, ndipo sikelo ya HRN kapena HRT ya Rockwell hardness tester idzagwiritsidwa ntchito ngati zitsulo zosapanga dzimbiri zoonda- machubu okhala ndi mipanda ndi mapepala okhala ndi makulidwe osakwana 1 ~ 2mm.
5. Chitsulo chopanga
Mayeso a Brinell hardness test nthawi zambiri amagwiritsidwa ntchito ngati zitsulo zopangidwa ndi chitsulo, chifukwa microstructure yachitsulo chosakanizidwa sichikhala yunifolomu mokwanira, ndipo kuyesa kwa Brinell hardness indentation ndi kwakukulu.Chifukwa chake, kuyesa kwa kuuma kwa Brinell kumatha kuwonetsa zotsatira zonse za microstructure ndi katundu wa magawo onse azinthu.
6. Chitsulo choponyera
Zida zachitsulo zotayira nthawi zambiri zimadziwika ndi mawonekedwe osagwirizana komanso njere zolimba, kotero Brinell hardness test nthawi zambiri amatengera.Rockwell hardness tester itha kugwiritsidwa ntchito poyesa kuuma kwa zida zina zachitsulo.Kumene kulibe malo okwanira pagawo laling'ono la tirigu wabwino wa Brinell hardness test test, HRB kapena HRC sikelo nthawi zambiri ingagwiritsidwe ntchito kuyesa kuuma, koma ndi bwino kugwiritsa ntchito sikelo ya HRE kapena HRK, chifukwa HRE ndi masikelo a HRK amagwiritsa ntchito mipira yachitsulo ya 3.175mm m'mimba mwake, yomwe imatha kuwerengera bwino kuposa mipira yachitsulo ya 1.588mm m'mimba mwake.
Zida zachitsulo zolimba zosungunuka nthawi zambiri zimagwiritsa ntchito Rockwell hardness tester HRC.Ngati zinthuzo sizili zofanana, deta ingayesedwe ndipo mtengo wapakati umatengedwa.
7. Sintered carbide (hard alloy)
Kuyesa kuuma kwa zida zolimba za alloy nthawi zambiri kumangogwiritsa ntchito sikelo ya Rockwell hardness tester HRA.
8. Ufa
Nthawi yotumiza: Jun-02-2023
