Hauv peb cov kev sib cuag nrog cov neeg siv khoom, peb pom tias qee zaum cov neeg siv khoom muaj cov kev cai tshwj xeeb rau cov ntaub ntawv steel rau cranes. Ntawm no peb qhia luv luv txog ob hom hlau siv hauv peb cov cranes.
Q235 thiab Q355, cov no yog cov khoom siv hlau dav siv los tsim peb cov cranes.
Qhov sib txawv ntawm ob yam khoom.
1. Yield zog.
Tawm lub zog ntawm Q235: 235MPa
Tawm lub zog ntawm Q355: 355MPa
2. Cov ntsiab lus alloy sib txawv
Q235: Carbon qauv hlau
Q355: Tsawg alloy qauv hlau
Q235--cov khoom siv hlau, carburized lossis cyanide qhov chaw uas tsis tshua muaj lub zog xav tau, khi rods, txuas rods, hooks, couplings, bolts thiab ceev, lub tes tsho, shafts thiab welded qhov chaw.
Q345--Cov khoom siv kho tshuab zoo, kev ua haujlwm kub tsis zoo, zoo plasticity thiab weldability, raws li cov khoom siv hlau uas muaj cov khoom hnyav hauv nruab nrab thiab tsis tshua muaj siab ntim, roj tank, tsheb, cranes, mining machinery, fais fab mov, txuas hniav thiab lwm cov qauv, cov khoom siv kho tshuab, cov qauv hauv tsev, thiab lwm yam, kub dov los yog normalized rau kev siv, tuaj yeem siv rau ntau yam qauv hauv qhov chaw txias hauv qab -40 degree .
Cov neeg siv khoom tuaj yeem xaiv cov khoom siv hlau uas lawv xav tau raws li lawv txoj haujlwm xav tau.
Yog hais tias lub crane ua hauj lwm nyob rau hauv ib tug tsawg kub cheeb tsam, los yog qib ua hauj lwm ntawm lub crane yog siab heev (xws li A6 los yog A7, A8 nyob rau hauv ISO tus qauv), los yog cov qauv ntawm lub crane yog nruj tswj, ces Q355 steel phaj yuav tsum. qhov kev xaiv zoo tshaj plaws rau cov neeg siv khoom.
Yog tias cov neeg siv khoom tsis muaj qhov tshwj xeeb, lawv tuaj yeem xaiv Q235 steel phaj, uas kuj zoo heev hauv daim ntawv thov, thiab nws cov nqi pheej yig dua Q355.
