phekolo ea mocheso e ka holimo e arotsoe ka mekhahlelo e 'meli: e' ngoe ke ho tima mocheso o ka holimo le ho futhumatsa mocheso, 'me e' ngoe ke phekolo ea mocheso oa lik'hemik'hale.Mokhoa oa ho lekola boima ba 'mele ke o latelang:
1. ka holimo quenching le tempering mocheso kalafo
Phekolo ea ho tima le ho futhumatsa mocheso hangata e etsoa ka ho futhumatsa ka induction kapa ho futhumatsa lelakabe.Mekhahlelo ea mantlha ea tekheniki ke boima bo kaholimo, boima ba lehae le botebo bo sebetsang bo thata bo thata.Vickers hardness tester kapa Rockwell hardness tester e ka sebelisoa bakeng sa tlhahlobo ea boima ba 'mele.Matla a teko Khetho e amana le botebo ba lera le thata le sebetsang hantle le boima bo ka holimo ba mosebetsi.Ho na le metjhini e meraro e thata e amehang mona.
(1) Vickers hardness tester ke mokhoa oa bohlokoa oa ho lekola boima bo kaholimo ba li-workpieces tse phekotsoeng mocheso.E ka sebelisa matla a liteko a 0.5-100KG ho leka lera le thatafatsang ka holimo le le tšesaane joalo ka 0.05mm botenya.Ho nepahala ha eona ho phahame 'me e ka khetholla li-workpieces tse sebelisoang mocheso.Phapang e nyane ea boima bo kaholimo, ho feta moo, botebo ba lera le thata le thata le bonoa ke Vickers hardness tester, ka hona hoa hlokahala ho hlomella Vickers hardness tester bakeng sa diyuniti tse etsang ts'ebetso ea kalafo ea mocheso kapa ho sebelisa palo e kholo. ea lisebelisuoa tse ka holimo tsa phekolo ea mocheso.
(2) The superficial Rockwell hardness tester e boetse e loketse haholo bakeng sa ho leka ho thatafala ha sesebediswa se ka holimo se tingoeng.Ho na le litekanyo tse tharo tsa "Rockwell hardness tester" tseo u ka khethang ho tsona.E ka leka lisebelisoa tse fapaneng tse thata tse kaholimo tseo botebo ba tsona bo sebetsang bo thata bo fetang 0.1mm.Le hoja ho nepahala ha "Rockwell hardness tester" e ka holimo-limo e se holimo ho feta ea Vickers hardness tester, e ka se e ntse e finyella litlhoko e le mokhoa oa ho lemoha bakeng sa tsamaiso ea boleng le tlhahlobo ea litšoaneleho tsa limela tsa phekolo ea mocheso..Ka ntle ho moo, e boetse e na le litšobotsi tsa ts'ebetso e bonolo, tšebeliso e bonolo, theko e tlaase, tekanyo e potlakileng, le ho bala ka ho toba litekanyetso tsa boima.Teko e kaholimo ea Rockwell hardness e ka sebelisoa ho bona kapele le ka mokhoa o sa senyeheng li-batch tsa li-workpieces tse tshelwang mocheso ka bonngoe.E bohlokoa haholo ho lifeme tsa tšepe le lifeme tsa ho etsa mechine.Ha mocheso o kaholimo oa mocheso o thata o le motenya, ho ka sebelisoa tester ea thata ea Rockwell.Ha mocheso o thata oa lera botenya ke 0.4-0.8mm, sekala sa HRA se ka sebelisoa.Ha botebo bo thatafalitsoeng ba lera Ha bo feta 0.8mm, sekala sa HRC se ka sebelisoa.Vickers, Rockwell le maemo a holimo a Rockwell a mararo a thatafalloang a ka fetoloa habonolo ho e mong, a fetoloa litekanyetso, litšoantšo kapa boleng ba boima bo hlokoang ke basebelisi, 'me tafole e tsamaisanang le eona e maemong a machaba a ISO.Ho fanoe ka ASTM e tloaelehileng ea Amerika le ea China GB/T.
(3) Ha botenya ba lesela le thata la mocheso o ka holimo ho 0.2mm, ho ka sebelisoa teko ea boima ba Leeb, empa mochine oa mofuta oa C o lokela ho khethoa.Ha ho lekanya, tlhokomelo e lokela ho lefshoa ho fihlela qetellong le boholo ba kakaretso ea workpiece.Mokhoa ona oa ho lekanya ha o na Vickers le Rockwell The hardness tester e nepahetse, empa e loketse ho lekanya sebakeng sa fektheri.
2 phekolo ea mocheso oa lik'hemik'hale
Phekolo ea mocheso oa lik'hemik'hale ke ho kenella ka holim'a setsi sa mosebetsi ka liathomo tsa ntho e le 'ngoe kapa tse' maloa tsa lik'hemik'hale, ka hona ho fetola sebopeho sa lik'hemik'hale, sebopeho le ts'ebetso ea bokaholimo ba mosebetsi.Ka mor'a ho tima le mocheso o tlase oa mocheso, karolo e ka holimo ea workpiece e na le boima bo phahameng le ho hanyetsa ho apara.le ho kopana le matla a mokhathala, 'me motheo oa workpiece o na le matla a phahameng le ho tiea.Mekhahlelo e ka sehloohong ea tekheniki ea mosebetsi oa ho phekola mocheso oa lik'hemik'hale ke botebo ba lera le thata le boima bo ka holimo.Sebaka seo ho thata ho theohelang ho 50HRC ke botebo bo sebetsang bo thata.Teko e kaholimo ea boima ba lik'hemik'hale tse tšoaroang ke mocheso e ts'oana le teko ea boima ba li-workpieces tse phekotsoeng ka mocheso o sa timang.Ho ka sebelisoa litlhahlobo tsa hardness tsa Vickers, lihlahlobi tsa thata tsa Rockwell kapa tsa Rockwell hardness li ka sebelisoa.Teko ea boima ho bona, ke botenya feela ba nitriding botenya bo tšesaane, hangata ha bo fete 0.7mm, ebe Rockwell hardness tester e ke ke ea sebelisoa.
3. phekolo ea mocheso sebakeng seo
Haeba likarolo tsa phekolo ea mocheso sebakeng seo li hloka boima bo phahameng ba sebaka, phekolo ea mocheso ea ho tima mocheso e ka etsoa ka ho futhumala ha induction, joalo-joalo likarolo tse joalo hangata li hloka ho tšoaea boemo ba phekolo ea mocheso oa sebaka sa quenching le boleng ba boima ba sebaka ka setšoantšo, le ho thatafala. teko ea likarolo e lokela ho etsoa sebakeng se khethiloeng, sesebelisoa sa ho hlahloba boima ba 'mele se ka sebelisa Rockwell hardness tester ho hlahloba boleng ba boima ba HRC.Haeba mocheso o thata oa mocheso o sa teba, ho ka sebelisoa teko ea thata ea Rockwell ho leka boleng ba boima ba HRN.
Nako ea poso: Aug-16-2023
