Kuzimitsa ndi njira yofunikira pakuchiza kutentha kwachitsulo, komwe kumasintha mawonekedwe akuthupi ndi makina azinthu kudzera mukuzizira kofulumira. Panthawi yozimitsa, chogwirira ntchito chimakhala ndi magawo monga kutentha kwapamwamba, kusungunula, ndi kuzizira mofulumira. Pamene workpiece mofulumira utakhazikika kutentha kutentha, chifukwa cha malire a olimba gawo kusintha, ndi microstructure wa workpiece amasintha, kupanga nyumba mbewu zatsopano ndi kugawa nkhawa mkati.
Pambuyo kuzimitsa, workpiece nthawi zambiri imakhala yotentha kwambiri ndipo sichinakhazikike bwino mpaka kutentha. Panthawiyi, chifukwa cha kusiyana kwakukulu kwa kutentha pakati pa pamwamba pa workpiece ndi chilengedwe, workpiece idzapitirizabe kusamutsa kutentha kuchokera pamwamba kupita mkati. Njira yotumizira kutenthayi imatha kubweretsa kutentha kwapakati pagawo la workpiece, kutanthauza kuti kutentha kumalo osiyanasiyana mkati mwa workpiece sikufanana.
Chifukwa cha kupsinjika kotsalira ndi kusintha kwapangidwe komwe kumapangidwa panthawi yozimitsa, mphamvu ndi kuuma kwa workpiece zidzakhala bwino kwambiri. Komabe, kusintha kumeneku kungapangitsenso kuwonongeka kwa workpiece ndipo kungayambitse zolakwika zina zamkati monga ming'alu kapena kupunduka. Choncho, m'pofunika kuchita tempering mankhwala pa workpiece kuthetsa nkhawa yotsalira ndi kukwaniritsa chofunika ntchito.
Tempering ndi ndondomeko Kuwotcha workpiece ndi kutentha kwina ndiyeno kuzirala, ndi cholinga kuwongolera microstructure ndi katundu opangidwa pambuyo quenching. Kutentha kotentha nthawi zambiri kumakhala kocheperako kuposa kutentha kozimitsa, ndipo kutentha koyenera kumatha kusankhidwa potengera mawonekedwe ndi zofunikira za zinthuzo. Kawirikawiri, kutentha kwapamwamba kwambiri, kumachepetsa kuuma ndi mphamvu ya workpiece, pamene kulimba ndi pulasitiki kumawonjezeka.
Komabe, ngati workpiece alibe utakhazikika kwa firiji, mwachitsanzo akadali pa kutentha, tempering mankhwala si zotheka. Izi ndichifukwa choti kutenthetsa kumafuna kutenthetsa chogwirira ntchito ku kutentha kwina ndikuchisunga kwakanthawi kuti chikwaniritse zomwe mukufuna. Ngati workpiece ili kale kutentha kwambiri, kutentha ndi kutsekemera sikungatheke, zomwe zidzachititsa kuti kutentha zisagwirizane ndi ziyembekezo.
Choncho, musanayambe chithandizo cha kutentha, m'pofunika kuonetsetsa kuti workpiece yakhazikika bwino kutentha kwa chipinda kapena pafupi ndi kutentha. Ndi njira iyi yokhayo yomwe ingathe kuchititsa chithandizo cha tempering kuti chiwongolere ntchito ya workpiece ndikuchotsa zolakwika ndi zovuta zomwe zimapangidwira panthawi yozimitsa.
Mwachidule, ngati workpiece kuzimitsidwa si utakhazikika kwa firiji, sangathe kukumana tempering mankhwala. Kutentha kumafuna kutentha kwa workpiece ku kutentha kwina ndikuisunga kwa nthawi ndithu, ndipo ngati chogwiritsira ntchito chiri kale pa kutentha kwakukulu, kutenthetsa sikungathe kukhazikitsidwa bwino. Choncho, n'kofunika kwambiri kuonetsetsa kuti workpiece mokwanira utakhazikika kutentha firiji pamaso tempering pa ndondomeko kutentha kutentha kuonetsetsa kuti workpiece akhoza kukwaniritsa chofunika ntchito ndi khalidwe.
Nthawi yotumiza: Dec-29-2023
