Kuchiza kwa Kutentha Kwambiri Pamwamba pa Zida Zachitsulo

Pamwamba kutentha mankhwala amatanthauza ndondomeko kutentha-kuchiza kokha pamwamba wosanjikiza castings zitsulo. Pamwamba kutentha mankhwala angathenso kupeza chofunika metallographic dongosolo ndi makina katundu.

Nthawi zambiri ntchito pamwamba kutentha mankhwala njira ndi: induction Kutentha quenching, lawi kutentha quenching, laser kutentha mankhwala, kukhudzana kukaniza Kutentha quenching, electrolyte quenching, zimachitika kutentha kutentha mankhwala, etc. Kudzera pamwamba kutentha mankhwala, castings ndi mbali zina zitsulo angapeze pamwamba wosanjikiza. zomwe zimakwaniritsa zofunikira zogwirira ntchito.

Pambuyo pakuwumitsa pamwamba kumapezedwa ndi kutentha ndi kuzimitsa pamwamba, pachimake cha kuponyerako kumatha kukhalabe ndi mawonekedwe oyambira ndi magwiridwe antchito, kuti akwaniritse bwino kwambiri pakuwongolera mphamvu za kutopa, kuwongolera kukana komanso kusunga kulimba. Panthawi imodzimodziyo, chithandizo cha kutentha kwapamwamba chikhoza kuchepetsa mphamvu yogwiritsira ntchito mphamvu komanso nthawi yomweyo kuchepetsa kuzimitsa deformation.

Induction kuumitsa ndi njira yochizira kutentha yomwe imagwiritsa ntchito kutentha komwe kumapangidwa ndi induction current kudzera pa workpiece kutenthetsa pamwamba pa kuponyera, kwanuko kapena konsekonse, ndiyeno kuziziritsa mwachangu. Mfundo zazikuluzikulu za kutentha kwa induction ndi: electromagnetic induction, skin effect and heat conduction.

 

 

Makhalidwe a Kutentha kwa Induction Heating:
1) Kuzimitsa kwa induction kumakhala ndi superplasticity. Kuuma kwa pamwamba kwa workpiece ndi 2-3 HRC kuposa kuzima wamba. Pambuyo pakuwotcha ndi kuzimitsa, martensite ya kuponyera ndi yaying'ono ndipo ma carbides amabalalika.
2) Kukaniza kovala kwa kuponyera pambuyo pozimitsa kutentha kwa induction ndikokwera kuposa kuzimitsa wamba.
3) Chifukwa pamwamba pa workpiece ndi bwino cryptocrystalline martensite ndipo pali compressive kupsyinjika, kutopa mphamvu workpiece bwino kwambiri.
4) Ubwino wa workpiece ndi wokhazikika ndipo mapindikidwe ndi ochepa.
5) Kutentha kwachangu komanso kuthamanga kwambiri kwamafuta
6) Kupanga kwakukulu, kosavuta kuzindikira kupanga kwamakina