I-Tempering yinkqubo yonyango yokushisa apho i-workpiece ivaliwe kwaye ishushu kwiqondo lokushisa elingaphantsi kwe-Ac1 (iqondo lokushisa lokuqala kwi-pearlite ukuya kwi-austenite ukuguqulwa ngexesha lokufudumeza), ibanjwe ixesha elithile, kwaye ipholile kwiqondo lokushisa.
Ukuthoba ngokuqhelekileyo kulandelwa kukucima, ngenjongo yoku:
(a) Ukuphelisa uxinzelelo olushiyekileyo olwenziwe ngexesha lokucinywa kwe-workpiece ukukhusela ukuguqulwa kunye nokuqhekeka;
(b) Ukulungelelanisa ukuqina, amandla, iplastiki, kunye nokuqina kwendawo yokusebenza ukuhlangabezana neemfuno zokusebenza zokusetyenziswa;
(c) Ulungelelwaniso oluzinzileyo nobukhulu, ukuqinisekisa ukuchaneka;
(d) Phucula kwaye uphucule inkqubo yokusebenza. Ke ngoko, ukuthambisa yinkqubo yokugqibela ebalulekileyo yokufumana umsebenzi ofunekayo womsebenzi. Ngokudibanisa ukucima kunye nokufudumala, iipropati ezifunekayo zomatshini zingafumaneka. [2]
Ngokoluhlu lobushushu bobushushu, ukufudumeza kunokohlulwa kubushushu obuphantsi, ukuthoba ubushushu obuphakathi, kunye nobushushu obuphezulu.
Ulwahlulo oluthomalalisayo
Ubushushu obuphantsi
Ukufudumala kwe-workpiece kwi-150-250 °
Injongo kukugcina ubulukhuni obuphezulu kunye nokunxiba ukuxhathisa kwezixhobo zokusebenza ezicinyiweyo, ukunciphisa uxinzelelo olushiyekileyo kunye nokuqina ngexesha lokucima.
I-martensite enobushushu efunyenwe emva kobushushu ibhekisa kwi-microstructure efunyenwe ngexesha lobushushu obuphantsi be-martensite ecinyiweyo. Iimpawu zeMechanical: 58-64HRC, ubunzima obuphezulu kunye nokuxhatshazwa kokugqoka.
Umda wesicelo: Isetyenziswa kakhulu kwiindidi ezahlukeneyo zezixhobo eziphezulu zekhabhoni, izixhobo zokusika, izixhobo zokulinganisa, iimolds, iibheringi eziqengqelekayo, i-carburized kunye neendawo ezicinywe umphezulu, njl.
Ubushushu obuphakathi
Ukufudumeza i-workpiece phakathi kwe-350 kunye ne-500 ℃.
Injongo kukufezekisa ukuqina okuphezulu kunye nenqanaba lesivuno, ngokuqina okufanelekileyo. Emva kokufudumala, i-troostite enomsindo ifunyenwe, ebhekiselele kulwakhiwo oluphindwe kabini lwe-ferrite matrix eyenziwe ngexesha lobushushu be-martensite, apho i-carbides encinci kakhulu engqukuva (okanye yee-cementite) isasazwa ngaphakathi kwe-matrix.
Iimpawu zeMechanical: 35-50HRC, umda ophezulu we-elastic, indawo yesivuno, kunye nokuqina okuthile.
Umda wesicelo: ubukhulu becala isetyenziselwa imithombo, imithombo, ukufa kwe-forging, izixhobo zempembelelo, njl.
Ubushushu obuphezulu bobushushu
Ukufudumeza ii-workpieces ngaphezulu kwe-500 ~ 650 ℃.
Injongo kukufumana iipropathi ezibanzi zoomatshini kunye namandla amahle, iplastiki kunye nokuqina.
Emva kokufudumala, i-sorbite epholileyo ifunyenwe, ebhekiselele kwisakhiwo se-duplex se-ferrite matrix eyenziwe ngexesha lokufudumala kwe-martensite, apho i-carbides encinci ye-spherical (kubandakanywa ne-cementite) isasazwa ngaphakathi kwe-matrix.
Iimpawu zoomatshini: 25-35HRC, kunye neempawu ezilungileyo ezibanzi zoomatshini.
Umda wesicelo: Usetyenziswa kakhulu kwizinto ezahlukeneyo ezibalulekileyo ezithwele umthwalo, ezifana neentonga zokudibanisa, iibholithi, iigiya, kunye neenxalenye zeshaft.
Inkqubo yokulungiswa kobushushu obudibeneyo bokucima i-workpiece kunye nobushushu obuphezulu bubizwa ngokuba ngukucima kunye nokuvutha. Ukucima kunye nokutshisa akunakusetyenziswa kuphela kunyango lokugqibela lobushushu, kodwa kunye nonyango lwangaphambili lobushushu kwezinye iindawo ezichanekileyo okanye iindawo ezicinyiweyo.
I-imeyile:oiltools14@welongpost.com
UGrace Ma
Ixesha lokuposa: Nov-03-2023
