Ukulungiswa kwenxalenye yokubumba

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 le-normalizing, 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. ezinye iipleyiti zentsimbi ezisezantsi ezishushu eziqengqelekayo, iintsimbi eziphantsi kwe-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 ulungelelanisa, akuyimfuneko ukupholisa i-workpiece kwisithando somlilo njenge-annealing, ethatha ixesha elifutshane lesithando somlilo kunye nokusebenza kakuhle kwemveliso.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 kokuqhawula.Ukulinganisa ngokuqhelekileyo kusetyenziselwa ukusika kunye nokulungiswa komsebenzi.Kwintsimbi yekhabhoni ephakathi kunye nomxholo wekhabhoni we-0.25-0.5%, i-normalizing inokuphinda ihlangabezane neemfuno zokusika ukucutshungulwa.Kwiindawo ezikhaphukhaphu ezenziwe ngolu hlobo lwentsimbi, i-normalization ingasetyenziselwa njengonyango lokugqibela lokushisa.I-normalizing high carbon tool steel kunye nentsimbi yokuthwala kukuphelisa i-carbides yenethiwekhi kwisakhiwo kunye nokulungiselela isakhiwo se-periodization annealing.

Ubushushu bokugqibela bonyango lwamacandelo aqhelekileyo olwakhiwo, ngenxa yeempawu ezingcono zoomatshini ezibanzi zesixhobo sokusebenza emva kokuqheleka xa kuthelekiswa ne-annealed state, ingasetyenziswa njengonyango lokugqibela lobushushu kwezinye iindawo eziqhelekileyo zolwakhiwo 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.

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