Feem ntau siv cov khoom siv hlau qib qhia txoj kev

Alloy structural steel thiab alloy caij nplooj ntoos hlav steel qib qhia txoj kev
--Alloy structural steel qib siv cov lej Arabic thiab cov qauv tshuaj lom neeg cov cim qhia
Qhov nruab nrab carbon cov ntsiab lus (nyob rau hauv ib feem ntawm ib lab) yog qhia nyob rau hauv ob Arabic tus lej thiab muab tso rau ntawm lub taub hau ntawm qib. Cov ntsiab lus alloying tau qhia raws li hauv qab no: thaum qhov nruab nrab cov ntsiab lus tsawg dua 1.50%, tsuas yog cov ntsiab lus raug cim hauv qib, thiab cov ntsiab lus feem ntau tsis cim; Qhov nruab nrab alloying ntsiab lus ntawm 1.5{{40}}% ~ 2.49%, 2.50% ~ 3.49%, 3.5{{50}}% ~ 4.49%, 4.5{ {56}}% ~ 5.49%, ......, thaum lub caij alloying sau li 2, 3, 3, 3, 3, 4, 5.49%, 5.49%, 4.50% ~ 5.49% thiab 5.49% raws li tom qab qib. Thaum ......, nyob rau hauv cov ntsiab lus alloying sau tom qab sib xws 2, 3, 4, 5 ....... Piv txwv li: carbon, chromium, manganese, silicon, cov ntsiab lus nruab nrab ntawm 0.30%, 0.95% , 0.85%, 1.05% ntawm cov qauv hlau alloy, thaum S, P cov ntsiab lus tsawg dua los yog sib npaug rau 0.035%, nws qib tau qhia tias "30CrMnSi". Advanced high-zoo alloy structural steel (S, P cov ntsiab lus tsawg dua los yog sib npaug rau 0.025%), nyob rau hauv qhov kawg ntawm cov kos npe rau ntxiv rau lub cim "A" hais. Piv txwv li: "30 CrMnSiA". Tshwj xeeb zoo alloy structural steel (S Tsawg dua los yog sib npaug rau 0.015%, P Tsawg dua los yog sib npaug rau 0.025%), ntxiv cov cim "E" tom kawg ntawm qib, piv txwv li: "30CrM nSiE".
Tshwj xeeb alloy structural steel qib yuav tsum tseem nyob rau hauv qib taub hau (los yog tus Tsov tus tw) ntxiv rau ib lub cim sawv cev ntawm kev siv cov khoom.
--Alloy caij nplooj ntoos hlav steel qib tau qhia tib yam li cov qauv hlau alloy.
Piv txwv li: carbon, silicon, manganese, nruab nrab cov ntsiab lus ntawm {{0}}.60%, 1.75%, 0.75% ntawm lub caij nplooj ntoos hlav steel, qib yog qhia raws li "60Si2Mn". High-zoo caij nplooj ntoos hlav steel, ntxiv cov cim "A" nyob rau hauv lub kawg ntawm lub kos npe rau, lub kos npe rau yog qhia raws li "60Si2MnA".

Dawb-txiav steel qib qhia
Dawb txiav steel siv cov qauv tshuaj lom neeg cov cim, cov cim thiab cov lej Arabic teev nyob rau hauv Table 1. Cov lej Arabic qhia qhov nruab nrab cov ntsiab lus carbon (hauv seem ib lab).
a, ntxiv rau sulfur dawb txiav hlau thiab leej faj, phosphorus dawb txiav hlau, hauv cov cim "Y" thiab cov lej Arabic tsis ntxiv tom qab cov cim dawb txiav. Piv txwv li: dawb txiav hlau nrog qhov nruab nrab carbon cov ntsiab lus ntawm 0.15%, qib yog qhia raws li "Y15".
b, siab dua manganese cov ntsiab lus ntawm leej faj los yog leej faj, phosphorus dawb txiav hlau hauv lub cim "Y" thiab cov lej Arabic tom qab ntxiv cov cim manganese. Piv txwv li: qhov nruab nrab carbon cov ntsiab lus ntawm 0.40%, manganese cov ntsiab lus ntawm 1.20% ~ 1.55% ntawm dawb txiav hlau, nws qib yog qhia raws li "Y40Mn".
c, muaj calcium, txhuas thiab lwm yam dawb-txiav cov khoom ntawm cov hlau txiav dawb, hauv cov cim "Y" thiab cov lej Arabic tom qab ntxiv cov cim dawb-txiav. Piv txwv li: "Y15Pb", "Y45Ca".
-- Tsis yog-tempered mechanical structural steel qib sawv cev ntawm non-tempered mechanical structural steel, nyob rau hauv lub taub hau ntawm qib tau ntxiv cov cim "YF" thiab "F" rau dawb-txiav non-tempered mechanical structural steel thiab kub forging non-tempered mechanical structural steel. Non-tempered mechanical structural steel rau kub forging, lwm cov ntsiab lus ntawm cov lej lej yog tib yam li cov hlau hlau alloy. Piv txwv li: "YF35V", "F45V".