High Tensile Alloy Steel Bars

lHigh Tensile Strength Steels

Rau cov ntawv thov uas yuav tsum tau muaj zog tensile thiab toughness ntau dua li cov carbon steels muaj ntau yam ntawm cov hlau tsis tshua muaj hlau.Cov no yog categorized li high tensile los yog steels thiab rooj hardening steels.Lub siab tensile lub zog steels muaj txaus alloying ntxiv enabling los ntawm hardening (los ntawm quench thiab temper kev kho mob) raws li lawv alloying ntxiv.

lCase Hardening (carburising) Steels

Case hardening steels yog ib pab pawg ntawm cov pa roj carbon tsawg nyob rau hauv qhov chaw siab hardness nto (li no lub sij hawm cov ntaub ntawv hardened) yog tsim thaum lub sij hawm kho cua sov los ntawm kev nqus thiab diffusion ntawm carbon.Qhov siab hardness tsam yog txhawb los ntawm qhov tsis muaj kev cuam tshuam hauv cov tub ntxhais hauv cheeb tsam, uas yog qis dua hardness thiab ntau dua toughness.

Cov pa roj carbon monoxide dawb uas tuaj yeem siv rau rooj plaub tawv yog txwv.Qhov twg siv cov pa roj carbon monoxide, qhov ceev ceev quenching tsim nyog los tsim kom txaus siab hardness nyob rau hauv rooj plaub yuav ua rau distortion thiab lub zog uas yuav tsim nyob rau hauv lub tub ntxhais yog heev txwv.Alloy case hardening steels tso cai rau qhov yooj yim ntawm cov txheej txheem quenching qeeb kom txo qis kev sib txawv thiab cov tub ntxhais muaj zog tuaj yeem tsim tau.

lNitriding hlau

Nitriding steels tuaj yeem muaj qhov tawv tawv dua uas tsim los ntawm kev nqus ntawm nitrogen, thaum raug nitriding cua ntawm qhov kub ntawm 510-530 ° C, tom qab hardening thiab tempering.

High tensile steels haum rau nitriding yog: 4130, 4140, 4150 & 4340.