4140 thiab 4130 yog dab tsi?
4140- Nrog rau cov ntsiab lus siab tshaj plaws ntawm 0.38% mus rau 0.43% thiab lwm yam khoom xws li silicon, manganese, phosphorus, sulfur, chromium thiab molybdenum, 4140 steel yog ib hom chromium hlau. Tsawg alloy steel yog siv. Tab sis nws yog robust, robust thiab siv tau.
4130- Nrog rau qhov siab tshaj plaws carbon feem pua ntawm 0.28% mus rau 0.33%, 4130 steel yog cov hlau alloy uas muaj xws li manganese, phosphorus, sulfur, silicon, chromium thiab molybdenum. Nws tseem yog cov hlau tsis tshua muaj hlau. Txawm li cas los xij, nws yog resistant, weldable thiab machinable.
Kev siv ntawm 4140 thiab 4130
4140- Qhov zoo ntawm AISI 4140 round bars ua rau lawv muaj txiaj ntsig hauv ntau qhov chaw. Qee qhov nws siv suav nrog kev tsim cov crankshafts, zog, sprockets, thiab lwm yam khoom.
4130- Thaum 4130 steel siv rau hauv kev tsim khoom xws li milling thiab vuam, ntau yam khoom sib txawv tuaj yeem tsim. Tam sim no, nws ua lub luag haujlwm tseem ceeb hauv kev lag luam tsheb thiab siv los ua cov cuab yeej xws li cov cuab yeej txiav, cov cuab yeej laum thiab lub zog.
Qhov sib txawv ntawm 4140 thiab 4130
Qhov sib txawv ntawm 4140 thiab 4130 kev sib piv yog feem ntau yog nyob ntawm seb ob qhov sib txawv tau muab tso ua ke li cas. Lub elemental muaj pes tsawg leeg yog tib yam rau ob variations. Thaum 4130 muaj 0-28%-0.33% carbon, thaum 4140 muaj 0.38%-0.43%, cov pa roj carbon ntau txawv. Qhov kev sib txawv no yog lub luag haujlwm rau cov yam ntxwv sib txawv uas tsim los ntawm cov variants.
4140 steel yog hardenable thiab muaj zog dua 4130 steel vim nws cov ntsiab lus carbon ntau dua . 4140 thiab feem ntau yog cov khoom siv zoo tshaj plaws los siv rau cov khoom siv hluav taws xob uas tsis sib xws thiab kev hloov pauv hauv ntu, nrog rau cov seem tuab, yog tam sim no vim nws cov yam ntxwv sib sib zog nqus. Vim li no, 4140 feem ntau yooj yim dua kom tau txais thiab pheej yig dua hauv cov ntawv bar thiab phaj, thaum 4130 yooj yim dua los nrhiav hauv AISI 4130 round bars thiab daim ntawv foos.
Lub Tshuag machined 4140 steel raug tsim cov khoom uas feem ntau muaj muaj txoj hauv kev zoo dua ntawm hardening (mus rau qib normalized) yog tias tsis muaj kev kho cua sov tom qab tshaj li thaum siv 4130 steel. Yog tias sib xyaw nrog lwm cov chromium alloys nrog cov pa roj carbon zoo sib xws, xws li lwm yam 4140 qhov chaw, lossis cov khoom tsim los ntawm 4340, thiab lwm yam, 4140 muaj peev xwm tsim tau qhov muaj zog ntau dua. Tsuas yog kev txo qis hauv weldability, kev siv 4140 hauv kev sib xyaw ua ke tsis raug txwv lossis txo qis. Txawm li cas los xij, feem ntau cov tuam txhab lag luam yuav tsis muaj teeb meem nrog cov txheej txheem vuam zoo, kev ua haujlwm ua ntej thiab tom qab cua sov, thiab kev xaiv vuam zoo.
Nyob ntawm seb hom hlau siv, 4130 N yuav muaj lub zog tawm los ntawm 60 txog 75 ksi; Cold drawn seamless tubes yuav nyob ze rau ntawm 75 ksi cim, thaum kub dov tuav thiab daim hlau yuav nyob ze rau 60 ksi cim. 4140 N tuav thiab daim hlau, ntawm qhov tod tes, yuav nyob ze rau 100ksi. Tsis tas li ntawd, 4140 N muaj me ntsis machinability zoo dua li 4130 N. Tsis yog mos li 4130 yog qhov tougher 4140.
