Uvavanyo oluqhelekileyo lwe-Vickers hardness tester

 

1. Sebenzisa indlela yokuvavanya ubunzima beVickers kwiindawo ezidityanisiweyo (uvavanyo lobunzima beWeld Vickers):

Ekubeni isakhiwo senxalenye edibeneyo ye-weldment (i-weld seam) ngexesha le-welding iya kutshintsha ngexesha lenkqubo yokwakheka, inokwenza ikhonkco elibuthathaka kwisakhiwo esidibeneyo. Ubulukhuni be-welding bungabonisa ngokuthe ngqo ukuba inkqubo ye-welding ifanelekile na. Emva koko indlela yokuhlola ubulukhuni be-Vickers yindlela enceda ukuvavanya umgangatho we-welds. Umvavanyi wobulukhuni be-Vickers we-Laizhou Laihua Hardness Tester Factory unokwenza uvavanyo lobulukhuni kwiindawo ezidibeneyo okanye kwiindawo ze-welding. Xa usebenzisa umvavanyi wobulukhuni be-Vickers ukuvavanya iindawo ezidibeneyo, kufuneka kuqatshelwe le miqathango ilandelayo yovavanyo:

Ukuthamba kwesampulu: Ngaphambi kokuvavanya, siyayigaya i-weld eza kuvavanywa ukuze senze umphezulu wayo ube mpuluswa, ungabi namanqatha e-oxide, imifantu kunye nezinye iziphene.

Kumgca osembindini we-weld, thatha inqaku kumphezulu ogobileyo rhoqo kwi-100 mm ukuze kuvavanywe.

Ukukhetha amandla ovavanyo ahlukeneyo kuya kuphumela kwiziphumo ezahlukeneyo, ngoko ke kufuneka sikhethe amandla ovavanyo afanelekileyo ngaphambi kokuvavanya.

2. Ungayisebenzisa njani iVickers hardness tester (micro Vickers hardness tester) ukuze ubone ubunzulu beleya eqinileyo?

Ungabubona njani ubunzulu bomaleko oqinileyo weendawo zentsimbi ngonyango lomphezulu olufana ne-carburizing, i-nitriding, i-decarburization, i-carbonitriding, njl.njl., kunye neendawo zentsimbi ezicinyiweyo?

Ubunzulu bomaleko oqinisiweyo obusebenzayo busetyenziswa kakhulu ukufudumeza umphezulu wendawo ukuze kubangele utshintsho kwisakhiwo kunye nokusebenza kumphezulu wentsimbi ukuze kufezekiswe isiphumo sokwanda kobunzima kunye namandla kunye nokuqina. Kubhekisa ekulinganisweni ukusuka kwicala elithe nkqo lomphezulu wenxalenye ukuya kumda wesakhiwo esichaziweyo. Okanye umgama womaleko oqinisiweyo wobunzima obuncinci obuchaziweyo. Ngokwesiqhelo sisebenzisa indlela yobunzima be-gradient ye-Vickers hardness tester ukufumanisa ubunzulu bomaleko oqinisiweyo obusebenzayo be-workpiece. Umgaqo kukufumanisa ubunzulu bomaleko oqinisiweyo obusebenzayo ngokusekelwe kutshintsho lobunzima be-micro-Vickers ukusuka kumphezulu ukuya embindini wenxalenye.

Ukuze ufumane iindlela ezithile zokusebenza, nceda ujonge ividiyo yenkampani yethu yokuvavanya ubunzima beVickers. Le ilandelayo yintshayelelo elula yokusebenza:

Lungisa isampuli njengoko kufuneka, kwaye umphezulu wovavanyo kufuneka upholishwe ube ngumphezulu wesipili.

Khetha amandla ovavanyo lovavanyo lobunzima beVickers. Ubungakanani bobunzima bulinganiswa kwiindawo ezimbini nangaphezulu. Ubunzima beVickers bulinganiswa kumgca omnye okanye ngaphezulu ohambelanayo othe nkqo kumphezulu.

Ukuzoba igophe lobunzima ngokusekelwe kwidatha elinganisiweyo, kuyaziwa ukuba umgama othe nkqo ukusuka kumphezulu wenxalenye ukuya kwi-550HV (ngokubanzi) bubunzulu obusebenzayo bomaleko oqinileyo.

3. Ungayisebenzisa njani iVickers hardness tester xa uvavanya ubulukhuni bokwaphuka (indlela yokuvavanya ubulukhuni bokwaphuka kweVickers)?

Ukuqina kokwaphuka lixabiso lokumelana elibonakaliswa zizinto xa isampuli okanye inxalenye iqhekeka phantsi kweemeko ezingazinzanga ezifana nokuqhekeka okanye iziphene ezifana nokuqhekeka.

Ukuqina kokwaphuka kubonisa amandla ezinto zokuthintela ukwanda kweentanda kwaye luphawu lobungakanani bokuqina kwezinto.

Xa usenza uvavanyo lokuqina kwee-fracture, qala ngokupolisha umphezulu wesampulu yovavanyo uye kumphezulu wesipili. Kwi-Vickers hardness tester, sebenzisa i-conical diamond indenter ye-Vickers hardness tester ukwenza i-indentation kumphezulu ocoliweyo onomthwalo we-10Kg. Ii-cracks ezenziwe kwangaphambili zenziwa kwii-vertices ezine zophawu. Ngokuqhelekileyo sisebenzisa i-Vickers hardness tester ukufumana idatha yokuqina kwee-fracture.