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Ho thatafatsa bokaholimo ke eng?

ke eng ho thatafala hoa bokaholimo?

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 ba bokaholimo, boima ba lehae le botebo bo sebetsang bo thata bo thata. Teko ea boima bo ka sebelisoa Vickers hardness tester, Rockwell kapa surface Rockwell hardness tester le eona e ka sebelisoa. Khetho ea matla a teko (sekala) e amana le botebo bo tiileng ba lera le boima ba holim’a mosebetsi. Ho na le mefuta e meraro ea li-hardness testers tse amehang mona.

1. Vickers hardness tester ke mokhoa oa bohlokoa oa ho lekola boima ba bokaholimo ba li-workpieces tsa mocheso. E ka khetha matla a teko ea 0.5-100kg ho leka bokaholimo bo thatafalitsoeng bo le tšesaane joalo ka 0.05mm. Ho nepahala ha eona ke eona e phahameng ka ho fetisisa ‘me e ka khetholla bokaholimo ba mosebetsi o entsoeng ka mocheso. Phapano e nyane ka thatafala. Ntle le moo, botebo bo sebetsang ba lera le thata le bona bo lokela ho bonoa ke Vickers hardness tester. Ka hona, hoa hlokahala ho hlomella Vickers hardness tester bakeng sa li-unit tse etsang kalafo ea mocheso holim’a metsi kapa ho sebelisa lisebelisoa tse ngata tsa ho futhumatsa mocheso holim’a metsi.

2. The bokaholimo Rockwell boima tester e boetse ke haholo loketseng bakeng sa ho hlahloba thatathata holim’a quenched workpieces. Rockwell hardness tester e na le likala tse tharo tseo u ka khethang ho tsona. E ka leka lisebelisoa tse fapaneng tse thata tsa sefahleho tseo botebo ba tsona bo sebetsang bo fetang 0.1mm. Le hoja ho nepahala ha sefahleho sa Rockwell hardness tester ha se hodimo ho feta sa Vickers hardness tester, se khonne ho finyella ditlhoko e le mokhoa oa ho laola boleng le tlhahlobo ea litšoaneleho bakeng sa limela tsa phekolo ea mocheso. Ho feta 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 boleng ba boima. Rockwell hardness tester e ka leka kapele le ka mokhoa o sa senyeheng li-batch tsa li-workpieces tse tshelwang mocheso. Sena se bohlokoa haholo ho litsi tsa tšepe le lifemeng tsa ho etsa mechine.

3. Ha mocheso o holim’a mocheso o thata oa lera o teteaneng, Rockwell hardness tester e ka boela ea sebelisoa. Ha botenya ba lera le thatafalitsoeng ke mocheso le pakeng tsa 0.4 le 0.8mm, sekala sa HRA se ka sebelisoa, ‘me ha botenya ba lesela le thatafalitsoeng le feta 0.8mm, ho ka sebelisoa sekala sa HRC.

Litekanyetso tse tharo tsa boima ba Vickers, Rockwell le Surface Rockwell li ka fetoloa habonolo ho tse ling ‘me tsa fetoloa boleng ba boima bo hlokoang ke litekanyetso, litšoantšo kapa basebelisi. Tafole e tsamaellanang ea phetoho e fanoe ho standard standard ea ISO, American standard ASTM le Chinese standard GB/T.