Crankshaft ke e 'ngoe ea likarolo tsa bohlokoa ka ho fetisisa mochineng o tukang ka hare,' me bophelo ba ts'ebeletso ea eona hangata bo laola bophelo ba ts'ebeletso ea enjene ea mollo e ka hare. Ka 1920, American Clark Company e ile ea sebelisa thekenoloji e thatafatsang ea induction e ileng ea qaptjoa haufinyane bakeng sa ho thatafatsa koranta ea crankshaft, e ileng ea ntlafatsa haholo ho hanyetsa ha crankshaft, ka hona ho ntlafatsa bophelo ba ts'ebetso ea enjene e tukang e ka hare.

Lilemong tse mashome tsa morao tjena, ho robeha ha mokhathala ha crankshaft ho atile haholo, 'me mehloli ea mokhathala hangata e hlaha likhutlong tse chitja tsa crankshaft ea koranta e kopanyang. Ka lebaka lena, bahlahisi ba bangata ba hlahisitse litlhoko tsa ho ntlafatsa matla a mokhathala oa crankshaft. Senotlolo sa ho ntlafatsa matla a mokhathala oa crankshaft ke ho eketsa khatello ea kelello e setseng ea fillet ea crankshaft. Ho thatafatsoa ha li-fillet tsa crankshaft (ho kenyeletsoa le limakasine) ke mokhoa o ratoang oa ho fumana likhatello tse kholo tse setseng tsa> 600MPa bakeng sa li-fillets. Khampani e 'ngoe ea Japane e ile ea etsa liteko tse ngata tsa mokhathala mochining o tukang o ka hare oa crankshaft. Teko e bonts'itse hore crankshaft e thata ka ho fetesisa e na le matla a phahameng ka ho fetisisa a mokhathala (996MPa), matla a mokhathala o pota-potiloeng ke mokhathala ke oa bobeli (890MPa), 'me crankshaft ea nitrided ke ea boraro (720MPa). Likhamphani tsa Amerika le tsona li na le data e tšoanang. Crankshaft fillet quenching hangata e sebelisa "half-turn inductor" quenching, e tsejoang hape e le mokhoa oa ho tima oa Elotherm (Elotherm). Ke hore sensor e koaletsoe ka har'a koranta, 'me crankshaft e futhumala' me metsi a tima nakong ea ho potoloha (ho boetse ho na le nyeoe eo koranta ea crankshaft e futhumatsang mocheso o timang ebe e fetoloa ka letamong bakeng sa ho pholisa le ho tima). Mokhoa ona ha o nolofalletse feela ho kena le ho tsoa ha sensor ea crankshaft, o nolofatsa ketso ea sesebelisoa sa mochini o timang, empa hape o rarolla mapetsong a lesoba la oli, bophara bo sa lekaneng ba sebaka se thata, botenya bo sa lekanang ba lera le thata Mathata a kang a maholo. deformation.

Batho ba indasteri ka kakaretso ba lumela hore mokhoa oa ho tima Eluosen ke tsoelo-pele e kholo ho theknoloji ea ho tima crankshaft. Lintlha li bonts'a hore ho thatafatsoa ha likoranta tsa crankshaft ho ka eketsa bophelo ba enjine ho isa ho lihora tse 8000, athe ho tima likoranta le li-fillets ho ka eketsa bophelo ba enjine ho fihla ho lihora tse 10,000. Theknoloji ea bohlokoa e lokelang ho rarolloa ho fihlela ho tima fillet ke theknoloji ea kabo ea matla. Crankshaft "half-turn inductor" quenching e kenyelletsa mahlale a mangata, joalo ka phepelo ea phepelo ea motlakase khafetsa, sesebelisoa sa mochini oa ho tima le inductor, joalo-joalo. Litheknoloji tsena le tsona li bohlokoa haholo, empa mahlale ana a rarollotsoe qalong naheng ea heso mathoasong a lilemo tsa bo-1980.

Ho hlakile hore ho futhumatsa ho tima ha fillet ea crankshaft ho lokela ho etsoa ka mokhoa o tsitsitseng. Matla a ho futhumatsa a ka hare ho crank le bokantle ba crank a lokela ho fetoloa, ke hore, matla a ka hare ho crank a lokela ho ba maholo, 'me matla a ka ntle a crank a lokela ho ba nyenyane. Theknoloji ena e bitsoa theknoloji ea kabo ea matla. Likhutlo tse chitja tsa li-crankshaft tse kholo le tse nyane lia tima. Theknoloji ke ho fana ka matla a 100% ha ho futhumatsa bokahare ba crank, le matla a 60% (kapa 70%) ha ho futhumatsa bokantle ba crank, 'me ha crankshaft e ntse e potoloha, angle ea eketseha (kapa ea fokotseha) ka tekanyo e itseng. mong le e mong 15 ° Matla.