Daawaynta kulaylka ee foornada, sababtoo ah awoodda weyn ee foornada kuleylka iyo wakhtiga dheer ee daboolka, isticmaalka tamarta ayaa aad u weyn habka oo dhan, muddo dheer, sida loo badbaadiyo tamarta daaweynta kulaylka ee foornada ayaa la sameeyay. dhibaato adag.

Waxa loogu yeero "insulation eber" deminta, waa in la tilmaamo kuleyliyaha been abuurka ah, oogada iyo xudunta u ah si ay u gaaraan heerkulka kululaynta deminaya, dahaarka lahayn, isla markiiba demin habka qaboojinta. Sida laga soo xigtay aragtida austenitic dhaqameed, been abuurku waa inuu lahaadaa dheer wakhtiga dahaarka ee geeddi-socodka kuleylka, si ay u dhamaystiraan nukleation iyo kobaca hadhuudhka austenitic, kala diri ee cementite haraaga ah iyo homogenization of austenitic.The hadda demin iyo kuleylinta technology ee foornada waxaa la soo saaray iyada oo la raacayo hagidda aragtida this.Compared habka deminta hadda, "ilaalinta kulaylka eber" deminta badbaadinta waqtiga ilaalinta kulaylka loo baahan yahay by homogenization ee qaab-dhismeedka austenitic, ma aha oo kaliya badbaadin kara 20% -30% tamarta, hagaajinta waxtarka wax soo saarka 20% -30%, laakiin sidoo kale waa la dhimi karaa. ama baabi'iyo cilladaha oksaydhka, decarbonization, deformation iyo wixii la mid ah, taas oo ku habboon hagaajinta tayada alaabta.

Marka birta kaarboonka iyo birta aluminiumka ah ee hooseeya ayaa lagu kululeeyaa Ac1 ama Ac2, habka homogenization ee austenite iyo kala dirida carbides ee pearlite waa dhakhso.Marka cabbirka birta ay iska leedahay qaybta khafiifka ah, xisaabinta wakhtiga kuleylka uma baahna in la tixgeliyo. dahaarka kulaylka, in uu yahay, si loo gaaro eber dahaarka quenching.Tusaale ahaan, marka dhexroor ama dhumucdiisuna 45 workpiece steel waa wax aan ka badnayn 100mm, kuleylinta foornada hawada, heerkulka dusha iyo xudunta ayaa ku dhawaad ​​gaaray at at Isla mar ahaantaana, sidaas darteed wakhtigeeda labbiska ah waa la iska indho tiri karaa, marka la barbar dhigo habka wax soo saarka ee soo jireenka ah (r=aD) ee leh isugeynta kuleylka weyn, waxaa lagu yarayn karaa ku dhawaad ​​20% -25% deminta wakhtiga kuleylka.

Falanqaynta aragtida iyo natiijooyinka tijaabada ah waxay muujinayaan in ay suurtagal tahay in la qaato "dahaarka eber" ee deminta iyo caadiga ah kuleylinta birta qaab dhismeedka geeddi-socodku wuxuu hubin karaa sifooyinka farsamada ee shuruudaha; 45, 35CrMo, GCrl5 iyo workpiece kale ee birta qaab dhismeedka, isticmaalka "dahaadhka eber" kuleylinta ka badan kulaylka dhaqameed wuxuu badbaadin karaa wakhtiga kuleylka ee ku saabsan 50%, wadarta kaydka tamarta ee 10% - 15%.

(laga bilaabo: 168 been abuur net)