The Vickers hardness tester imatenga diamondi indenter, yomwe imakanikizidwa pamwamba pa chitsanzo pansi pa mphamvu yoyesera. Tsitsani mphamvu yoyesera mutatha kusunga nthawi yodziwika ndikuyesa kutalika kwa diagonal ya indentation, ndiye Vickers hardness value (HV) imawerengedwa molingana ndi formula.
Zotsatira za mutu kukanikiza pansi
- Kugwiritsa ntchito mphamvu yoyesera: Kukanikiza mutu ndi sitepe yofunika kwambiri yosamutsira mphamvu yoyesera (monga 1kgf, 10kgf, etc.) pamwamba pa zinthu zoyesedwa kupyolera mu indenter.
- Kupanga indentation: Kupanikizika kumapangitsa kuti indentation ichoke pamalo owoneka bwino a diamondi pamtunda, ndipo kulimba kumawerengedwa poyesa kutalika kwa diagonal ya indentation.
Opaleshoniyi imagwiritsidwa ntchito kwambiri poyesa kuuma kwa zida zachitsulo, mapepala owonda, zokutira, ndi zina zambiri, chifukwa ili ndi kuchuluka kwa mphamvu zoyeserera komanso kulowera pang'ono, komwe kuli koyenera kuyeza molondola.
Monga kapangidwe kake ka Vickers hardness tester (yosiyana ndi mtundu wokwera wa benchi), ubwino wa "kukankhira pansi" ndi kulingalira kwa kayendetsedwe ka ntchito ndi kapangidwe ka makina, tsatanetsatane motere,
1. Kuchita bwino kwambiri, kumagwirizana ndi machitidwe a makina a anthu
Pamutu pokanikiza kapangidwe kake, wogwiritsa ntchito amatha kuyika chitsanzocho pa benchi yokhazikika, ndikumaliza kukhudzana ndi kutsitsa kwa inndenter ndi mutu kupita pansi, osasintha pafupipafupi kutalika kwa benchi. Mfundo yogwiritsira ntchito "pamwamba-pansi" ili yabwino kwambiri pazizolowezi zogwirira ntchito, makamaka zochezeka kwa oyambira, zimatha kuchepetsa masitepe otopetsa a kuyika zitsanzo ndi kuyanjanitsa, kuchepetsa zolakwika za anthu.
2. Kukhazikika kwapang'onopang'ono, kulondola kwapamwamba kwambiri
Kapangidwe ka mutu kamene kakanikizira pansi kaŵirikaŵiri kumatengera njira yokhotakhota kwambiri (monga zitsulo zomangira zomangira bwino ndi njanji). Mukamagwiritsa ntchito mphamvu yoyesera, kuyimirira komanso kuthamanga kwa inndenter ndikosavuta kuwongolera, komwe kumatha kuchepetsa kugwedezeka kwamakina kapena kutsitsa. Pazinthu zolondola monga mapepala owonda, zokutira, ndi tizigawo ting'onoting'ono, kukhazikika kumeneku kungathe kupewa kupotoza kwa indentation komwe kumachitika chifukwa chakutsitsa kosakhazikika ndikuwongolera kwambiri kuyeza kwake.
3. Kusinthasintha kwakukulu kwa zitsanzo
Kwa zitsanzo za kukula kwakukulu, mawonekedwe osagwirizana kapena kulemera kwakukulu, mapangidwe a mutu-pansi safuna kuti benchi yogwira ntchito ikhale yolemetsa kwambiri kapena zoletsa kutalika (zogwirira ntchito zingathe kukhazikitsidwa), ndipo zimangofunika kuonetsetsa kuti chitsanzocho chikhoza kuikidwa pa workbench, yomwe imakhala "yololera" ku chitsanzo. Kukwera kwa benchi yogwirira ntchito kumatha kuchepetsedwa ndi kunyamula katundu ndi kukweza sitiroko ya benchi, chifukwa chake zimakhala zovuta kuzolowera zitsanzo zazikulu kapena zolemetsa.
4. Bwino muyeso repeatability
Njira yotsitsa yokhazikika komanso njira yabwino yogwirira ntchito imatha kuchepetsa zolakwika zomwe zimachitika chifukwa cha kusiyana kwa magwiridwe antchito amunthu (monga kupotoza kwamalumikizidwe pamene kukweza kwa benchi). Poyesa chitsanzo chomwecho kangapo, kukhudzana pakati pa indenter ndi zitsanzo kumakhala kosasinthasintha, kubwereza deta kumakhala bwino, ndipo zotsatira zake zimakhala zodalirika.
Pomaliza, Vickers hardness tester ali ndi maubwino ochulukirapo, kukhazikika, komanso kusinthika mwa kukhathamiritsa malingaliro a opareshoni ndi kapangidwe ka makina, ndipo ndi oyenera kuyezetsa kulondola kwazinthu, kuyesa zitsanzo zamitundu yambiri kapena kuyesa kwanthawi yayitali.
Nthawi yotumiza: Jul-16-2025
