I-normalizing yonyango lobushushu oluphucula ukuqina kwentsimbi. Emva kokufudumeza izinto zentsimbi kwiqondo lobushushu le-30-50 ℃ ngaphezu kobushushu be-Ac3, zibambe ixesha elithile kwaye umoya uzipholise ngaphandle kweziko. Olona phawu luphambili kukuba izinga lokupholisa liyakhawuleza kunokucima kodwa lisezantsi kunokucima. Ngexesha lokulinganisa, i-crystalline grains yentsimbi inokucocwa kwinkqubo yokupholisa ngokukhawuleza, engaphumeleli nje kuphela amandla anelisayo, kodwa iphucula kakhulu ubunzima (ixabiso le-AKV) kunye nokunciphisa ukuthambekela kwamacandelo ekuqhekekeni Emva kokuqhelekileyo, iipropati ezibanzi zomatshini. kwezinye iipleyiti zentsimbi ezisezantsi ezishushu eziqengqelekayo, intsimbi ephantsi ye-alloy forgings, kunye ne-castings inokuphuculwa kakhulu, kunye nokusebenza kokusika kunokuphuculwa.
I-normalizing isetyenziswa ikakhulu kwi-workpieces zentsimbi. Ukwenziwa kwesiqhelo kunye nokufakwa kwentsimbi ngokubanzi kuyafana, kodwa izinga lokupholisa liphezulu kancinci kwaye i-microstructure icolekile. Ezinye iintsimbi ezinomlinganiselo ophantsi kakhulu wokupholisa obaluleke kakhulu unokuguqula i-austenite ibe yi-martensite ngokupholisa emoyeni. Olu nyango aluqhelekanga kwaye lubizwa ngokuba yi-air cooling quenching. Ngokuchasene noko, ezinye iindawo zokusebenza ezinkulu ezinqamlezileyo ezenziwe ngetsimbi ezinezinga eliphezulu lokupholisa elibalulekileyo azikwazi ukufumana i-martensite nasemva kokucima emanzini, kwaye umphumo wokucima usondele kwisiqhelo. Ukuqina kwentsimbi emva kokuqhelekileyo kuphezulu kunoko emva kokufakwa. Xa uqhelekile, akuyimfuneko ukupholisa i-workpiece kwisithando somlilo njenge-annealing, ethatha ixesha elifutshane lesithando somlilo kwaye inomsebenzi ophezulu wokuvelisa. Ke ngoko, kwimveliso, i-normalization isetyenziswa ngokuqhelekileyo endaweni ye-annealing kangangoko kunokwenzeka. Kwintsimbi ye-carbon ephantsi kunye nomxholo wekhabhoni ongaphantsi kwe-0.25%, ubunzima obufunyenweyo emva kokuqhelekileyo buphakathi kwaye bulungele ukusika ngaphezu kwe-annealing. Ukulinganisa ngokuqhelekileyo kusetyenziselwa ukusika kunye nokulungiswa komsebenzi. Kwintsimbi yekhabhoni ephakathi kunye nomxholo wekhabhoni we-0.25-0.5%, i-normalizing inokuphinda ihlangabezane neemfuno zokusika ukusika. Kwiindawo ezikhaphukhaphu ezenziwe ngolu hlobo lwentsimbi, i-normalization ingasetyenziselwa njengonyango lokugqibela lokushisa. I-normalizing high carbon tool steel kunye nentsimbi yokuthwala kukuphelisa i-network carbides kwisakhiwo kunye nokulungiselela isakhiwo se-periodization annealing.
Ubushushu bokugqibela bonyango lwamalungu aqhelekileyo olwakhiwo, ngenxa yeempawu ezingcono ezibanzi zoomatshini besixhobo sokusebenza emva kokuqheleka xa kuthelekiswa ne-annealed state, ingasetyenziswa njengonyango lokugqibela lobushushu kwezinye iindawo eziqhelekileyo zesakhiwo ezinoxinzelelo oluphantsi kunye neemfuno zokusebenza, ukunciphisa iinkqubo. , gcina amandla, kunye nokuphucula ukusebenza kakuhle kwemveliso. Ukongeza, kwiindawo ezithile ezinkulu okanye ezintsonkothileyo ezimile, xa kukho umngcipheko wokuqhekeka ngexesha lokucima, i-normalization inokuthi ithathe indawo yokucima kunye nonyango lobushushu njengonyango lokugqibela lobushushu.
I-imeyile:oiltools14@welongpost.com
UGrace Ma
Ixesha lokuposa: Oct-23-2023
