Kunyango lobushushu lokubumba, ngenxa yamandla amakhulu eziko lokufudumeza kunye nexesha elide lokugquma, ukusetyenziswa kwamandla kukhulu kuyo yonke inkqubo, kwixesha elide, indlela yokugcina amandla kunyango lobushushu lokubumba kube yingxaki enzima.

Okubizwa ngokuba yi "zero insulation" ukucima, kukwalatha ukufudumeza forging, umphezulu wayo kunye core ukufikelela ubushushu ukucima ukufudumeza, akukho ukugquma, ngoko nangoko ukucima inkqubo yokupholisa.Ngokutsho theory yemveli austenitic, lo forging kufuneka ibe nexesha elide yokugquma kwinkqubo zokufudumeza, ukuze ukugqiba nucleation kunye nokukhula kweenkozo ze-austenisoal kunye nokukhula kweenkozo ze-austenisotal of austenitic.Iteknoloji ekhoyo yokucima kunye nokufudumeza iteknoloji ye-forgings iveliswa phantsi kokhokelo lwale nkcazo.Xa kuthelekiswa nenkqubo yangoku yokucima, "ukugcinwa kobushushu be-zero" ukucima usindisa ixesha lokugcinwa kobushushu obufunwa yi-homogenization yesakhiwo se-austenitic, kungekuphela nje kunokonga i-20% -30% yamandla, iphucula imveliso ye-302% okanye i-302% yokunciphisa imveliso. i-oxidation, i-decarbonization, i-deformation kunye nokunye, okulungele ukuphuculwa komgangatho wemveliso.

Xa i-carbon steel kunye nentsimbi ephantsi ye-alloy ifudunyezwa kwi-Ac1 okanye i-Ac2, inkqubo ye-homogenization ye-austenite kunye nokuchithwa kwe-carbides kwi-pearlite ikhawuleza.Xa ubukhulu bentsimbi buyingxenye yoluhlu oluncinci, ukubalwa kwexesha lokufudumala akufuneki ukuba kuqwalaselwe ukufudumala kwe-thermal, oko kukuthi, ukuphumeza i-zero ye-thermal insulation xa ukucima i-4 okanye ubukhulu bomsebenzi, umzekelo, i-4 ubukhulu be-thermal quenching. I-100mm, ukufudumeza kwisithando somoya, ukushisa kwendawo kunye nengundoqo kufikeleleke ngexesha elifanayo, ngoko ixesha layo elifanayo linokungahoywa, xa kuthelekiswa nenkqubo yemveli yokuvelisa (r = aD) kunye ne-coefficient enkulu yokufudumala, inokunciphisa malunga ne-20% -25% yokucima ixesha lokufudumala.

Uhlalutyo lwethiyori kunye neziphumo zovavanyo lubonisa ukuba kunokwenzeka ukwamkela "ukufakelwa kwe-zero" ekucimeni kunye nokufudumeza okuqhelekileyo kwensimbi yesakhiwo. Ngokukodwa, i-45, 45, 45 mn2 yentsimbi ye-carbon structural okanye i-alloy element eyodwa yentsimbi yesakhiwo, ukusetyenziswa kwenkqubo ye-"zero insulation" inokuqinisekisa iimpawu zomatshini zeemfuno; "i-zero insulation" ukufudumeza kunokufudumala kwendabuko kunokugcina ixesha lokufudumeza malunga ne-50%, ukonga amandla e-10% -15%, ukuphucula ukusebenza kakuhle kwe-20% -30%, kwangaxeshanye "i-zero insulation" inkqubo yokucima inceda ukucokisa okuziinkozo, ukuphucula amandla.

(Ukusuka kwi: 168 forgings net)