Mbale yachitsulo ya S460N/Z35 yokhazikika, mbale yamphamvu kwambiri ya ku Europe, mbiri yachitsulo ya S460N, S460NL, S460N-Z35: S460N, S460NL, S460N-Z35 ndi chitsulo chosungunuka chotentha chomwe chimapindidwa bwino pansi pa mkhalidwe wabwinobwino/wabwinobwino, makulidwe a mbale yachitsulo ya S460 si opitilira 200mm.
S275 ya muyezo wogwiritsira ntchito chitsulo chosapanga dzimbiri: EN10025-3, nambala: 1.8901 Dzina la chitsulocho lili ndi zigawo izi: Chilembo cha chizindikiro S: makulidwe ofanana ndi chitsulo chosakwana 16mm mphamvu yokolola: phindu lochepa la zokolola Mikhalidwe yotumizira: N imafotokoza kuti kukhudza kutentha kosachepera madigiri -50 kumaimiridwa ndi chilembo chachikulu L.
S460N, S460NL, S460N-Z35 Miyeso, mawonekedwe, kulemera ndi kupotoka kololedwa.
Kukula, mawonekedwe ndi kupatuka kovomerezeka kwa mbale yachitsulo kuyenera kutsatira zomwe zili mu EN10025-1 mu 2004.
Mkhalidwe wotumizira wa S460N, S460NL, S460N-Z35 Mapepala achitsulo nthawi zambiri amatumizidwa ali bwino kapena kudzera mu kugwedezeka kwabwinobwino pansi pa mikhalidwe yomweyi.
S460N, S460NL, S460N-Z35 Kapangidwe ka mankhwala a zitsulo za S460N, S460NL, S460N-Z35 Kapangidwe ka mankhwala (kusanthula kusungunuka) kuyenera kutsatira tebulo lotsatira (%).
Zofunikira pa kapangidwe ka mankhwala a S460N, S460NL, S460N-Z35: Nb+Ti+V≤0.26; Cr+Mo≤0.38 S460N Kusanthula Kusungunuka kwa Carbon Equivalent (CEV).
S460N, S460NL, S460N-Z35 Katundu wa makina Katundu wa makina ndi kachitidwe kake ka S460N, S460NL, S460N-Z35 ziyenera kukwaniritsa zofunikira patebulo lotsatirali: Katundu wa makina wa S460N (woyenera kupingasa).
Mphamvu ya S460N, S460NL, S460N-Z35 ikagwira ntchito bwino.
Pambuyo poyanika ndi kukhazikika, chitsulo cha kaboni chimatha kukhala ndi kapangidwe koyenera kapena kofanana, ndipo pambuyo pozimitsa, chimatha kukhala ndi kapangidwe kosagwirizana. Chifukwa chake, pophunzira kapangidwe kake pambuyo pa kutentha, osati chithunzi cha gawo la kaboni lachitsulo chokha komanso curve yosinthira ya isothermal (C curve) yachitsulo iyenera kutchulidwa.
Chithunzi cha gawo la kaboni wachitsulo chingawonetse njira yopangira makristalo a alloy pakuzizira pang'onopang'ono, kapangidwe kake kutentha kwa chipinda ndi kuchuluka kwa magawo, ndipo C curve ingawonetse kapangidwe ka chitsulocho ndi kapangidwe kena pansi pa mikhalidwe yosiyanasiyana yozizira. C curve ndi yoyenera mikhalidwe yozizira ya isothermal; CCT curve (austenitic continuous cooling curve) imagwira ntchito pamikhalidwe yozizira kosalekeza. Pamlingo winawake, C curve ingagwiritsidwenso ntchito kuyerekeza kusintha kwa kapangidwe ka microstructure panthawi yozizira kosalekeza.
Pamene austenite yazizidwa pang'onopang'ono (yofanana ndi kuzizira kwa ng'anjo, monga momwe zasonyezedwera pa Chithunzi 2 V1), zinthu zosinthira zimakhala pafupi ndi kapangidwe kake, komwe ndi pearlite ndi ferrite. Pamene kuzizira kukuwonjezeka, ndiko kuti, pamene V3>V2>V1 ikuwonjezeka, kuzizira kwa austenite kumawonjezeka pang'onopang'ono, ndipo kuchuluka kwa ferrite yozimiririka kumachepa, pomwe kuchuluka kwa pearlite kumawonjezeka pang'onopang'ono, ndipo kapangidwe kake kamakhala kosalala. Panthawiyi, ferrite yochepa yozimiririka imagawidwa kwambiri pamalire a tirigu.
Chifukwa chake, kapangidwe ka v1 ndi ferrite + pearlite; Kapangidwe ka v2 ndi ferrite + sorbite; Kapangidwe kakang'ono ka v3 ndi ferrite + troostite.
Pamene liwiro lozizira ndi v4, kuchuluka kochepa kwa ferrite ndi troostite (nthawi zina kuchuluka kochepa kwa bainite kumatha kuoneka) kumapangika, ndipo austenite imasinthidwa kwambiri kukhala martensite ndi troostite; Pamene liwiro lozizira v5 limaposa liwiro lozizira lofunikira, chitsulocho chimasinthidwa kwathunthu kukhala martensite.
Kusintha kwa chitsulo cha hypereutectoid kumafanana ndi kwa chitsulo cha hypoeutectoid, kusiyana kwake ndikuti ferrite imayamba kugwa pang'onopang'ono mu chomalizacho ndipo cementite imayamba kugwa pang'onopang'ono mu choyambacho.
Nthawi yotumizira: Disembala 14-2022
