Phekolo ea mocheso e thatafatsang ka induction ke eng?

1. Melao-motheo ea motheo

Ho ferekanya ho thatafatsa ke ho sebelisa molao-motheo oa induction ea electromagnetic ho beha sesebelisoa ka har’a khoele ea induction e entsoeng ka tube ea koporo. Ha motlakase o mong o sebelisoa ho coil ea induction, matla a khoheli a fapanyetsanang a nang le maqhubu a ka hare a ka hare a tla hlahisoa ka hare le ho potoloha. Haeba workpiece e behoa Tšimong ea khoheli, motlakase o hlahisoang o hlahisoa ka hare ho workpiece (conductor), ‘me workpiece e futhumetse ka lebaka la ho hanyetsa. Ka lebaka la “phello ea letlalo” ea ho fetoha ha hona joale, sekhahla sa hona joale se haufi le holim’a sebaka sa mosebetsi ke sona se seholo ka ho fetisisa, ha se ntse se le teng ka har’a setsi sa mosebetsi se batla se le zero. Mocheso o ka holimo oa workpiece o ka fihla likhato tse 800-1000 tsa Celsius ka metsotsoana e seng mekae, ha motheo o ntse o le haufi le mocheso oa kamore. Ha mocheso oa holim’a metsi o nyolohela mocheso o timang, fafatsa ho pholile hang-hang ho tima bokaholimo ba workpiece.

2. Likarolo tsa ho futhumatsa ha induction

A. Hobane mocheso oa ho futhumatsa o potlakile ka ho fetisisa ‘me tekanyo ea ho chesa haholo e kholo, ntlha ea bohlokoa ea tšepe ea eketseha, kahoo mocheso oa ho tima mocheso (mocheso oa mocheso oa workpiece) o phahametse mocheso o tloaelehileng oa ho tima.

B. Ka lebaka la ho futhumala ha induction ka potlako, likristale tsa austenite ha li bonolo ho hōla. Ka mor’a ho tima, ho fumanoa mohaho o motle haholo oa cryptocrystalline martensite, o etsang hore ho thatafala ha holim’a mosebetsi oa 2-3HRC ho feta ho tima ho tloaelehileng, ‘me ho hanyetsa ho apara ho boetse ho ntlafatsoa.

C. Ka mor’a ho tima holim’a metsi, molumo oa martensite ka har’a lera le thata le leholo ho feta mohaho oa pele, kahoo ho na le khatello e kholo ea masala holim’a lera, e ka ntlafatsang haholo ho hanyetsa ho khumama le matla a mokhathala a likarolo. Likarolo tse nyane li ka eketsoa ka makhetlo a 2-3, likarolo tse kholo li ka eketsoa ka 20% -30%.

D. Hobane lebelo la ho futhumatsa ha induction le potlakile ‘me nako e khutšoanyane, ha ho na oxidation kapa decarburization ka mor’a ho tima,’ me deformation ea workpiece e boetse e nyenyane haholo. Kamora ho thatafala ha induction, ho fokotsa khatello ea maikutlo le ho fokotsa brittleness, mocheso o tlase oa mocheso oa likhato tse 170-200 oa hlokahala. Li-workpieces tse kholoanyane le tsona li ka itšebetsa ka ho sebelisa mocheso o setseng oa sesebelisoa se tingoeng.