Hlau Q195, Q235, qhov txawv ntawm cov khoom siv?

Qhov txawv ntawm Q195, Q215, Q235, Q255 thiab Q275 yog dab tsi hais txog cov khoom siv?

Cov hlau carbon yog cov hlau siv ntau tshaj plaws, feem ntau yog dov ua hlau, cov profile thiab cov profile, feem ntau tsis tas yuav siv ncaj qha los kho cua sov, feem ntau yog rau kev tsim kho dav dav thiab kev tsim kho.

Q195, Q215, Q235, Q255 thiab Q275, thiab lwm yam, feem, qhia txog qib hlau, qib hlau los ntawm tus sawv cev ntawm qhov taw tes ntawm tsab ntawv (Q), qhov taw tes ntawm qhov taw tes, qhov zoo, qhov zoo thiab lwm yam cim (A, B, C, D) deoxygenation txoj kev cim thiab lwm yam rau plaub ntu ntawm cov khoom sib law liag. Los ntawm cov tshuaj lom neeg sib xyaw, cov hlau tsis muaj zog qib Q195, Q215, Q235, Q255 thiab Q275 qib loj, qhov siab dua cov pa roj carbon, cov ntsiab lus manganese, qhov ruaj khov dua nws cov yas. Cov khoom siv kho tshuab los ntawm cov ntsiab lus, cov qib saum toj no qhia tias qhov tuab ≤ 16 hli ntawm qhov taw tes ntawm hlau. Nws lub zog tensile yog: 315-430, 335-450, 375-500, 410-550, 490-630 (obN / mm2); qi nws qhov ntev yog: 33, 31, 26, 24, 20 (0.5%). Yog li ntawd, thaum qhia cov hlau rau cov neeg siv khoom, cov neeg siv khoom yuav tsum tau ceeb toom kom yuav cov khoom sib txawv ntawm cov hlau raws li cov khoom xav tau, kom tsis txhob cuam tshuam rau qhov zoo ntawm cov khoom.

 

Qhov txawv ntawm cov ntaub ntawv Q235A thiab Q235B yog dab tsi?

Q235A thiab Q235B yog ob qho tib si carbon hlau. Hauv lub teb chaws tus qauv GB700-88, Q235A thiab Q235B cov khoom sib txawv yog feem ntau yog cov pa roj carbon ntawm cov hlau, cov khoom siv rau cov khoom siv Q235A cov pa roj carbon yog 0.14-0.22% ntawm; Q235B cov khoom siv tsis ua qhov kev sim cuam tshuam, tab sis feem ntau ua qhov kev sim kub cuam tshuam, V-notch. Piv txwv li, cov khoom siv kho tshuab ntawm cov khoom siv Q235B hlau zoo dua li cov khoom siv Q235A hlau. Feem ntau, cov hlau ua tiav ua ntej tawm hauv Hoobkas tau cim rau ntawm daim ntawv qhia tus kheej. Cov neeg siv tuaj yeem qhia seb cov khoom siv yog Q235A, Q235B, lossis lwm yam khoom siv ntawm daim ntawv cim.

 

Cov qib hlau Nyiv yog SPHC, SPHD, thiab lwm yam. Lawv txhais li cas?

Cov hlau Nyiv (JIS series) qib ntawm cov hlau qauv feem ntau muaj peb ntu: thawj ntu qhia txog cov khoom siv, xws li: S (Hlau) txhais tau tias hlau, F (Ferrum) txhais tau tias hlau. Qhov thib ob ntawm cov duab sib txawv, hom, siv, xws li P (phaj) ntawd phaj, T (raj), K (kogu) ntawd cuab yeej. Qhov thib peb ntawm lub rooj cov yam ntxwv ntawm tus lej, feem ntau yog qhov tsawg kawg nkaus tensile zog. Xws li: ss400 - thawj s uas yog hlau (Ssteel), qhov thib ob s uas yog "qauv" (Structuree), 400 rau kab qis zog ntawm 400Mpa cov hlau qauv. Ntawm lawv: sphc ---- thawj Ssteel Steel luv, P rau phaj Pate luv, H rau cua sov luv, Lag luam luv, tag nrho qhia tias dav dav kub-dov thiab hlau strip.

 

SPHD----- txhais tau tias yog daim hlau kub dov thiab daim kab xev rau kev luam ntawv.

SPHE ------ txhais tau tias cov ntawv hlau kub thiab cov kab txaij rau kev kos duab tob.

SPCC ------ txhais tau tias cov hlau carbon txias dov thiab daim kab xev rau kev siv dav dav, sib npaug rau Suav teb Q195-215A qib. Tsab ntawv thib peb C yog lub npe luv rau Txias, uas yog qhov yuav tsum tau ua kom ntseeg tau tias qhov kev xeem tensile thaum kawg ntawm qib ntxiv rau T rau SPCCT.

SPCD ------ qhia txog cov hlau carbon txias thiab cov hlau strip rau kev xuas nrig, sib npaug rau Tuam Tshoj 08AL (13237) cov hlau zoo carbon.

SPCE ------ txhais tau tias cov hlau carbon txias dov thiab daim kab xev rau kev kos duab tob, sib npaug rau Tuam Tshoj 08AL (5213) xuas nrig ntaus hlau. Txhawm rau kom tsis muaj kev ua haujlwm, ntxiv N rau SPCEN thaum kawg ntawm qib.

Cov ntawv hlau carbon txias dov thiab cov ntawv strip, annealed mob rau A, tus qauv tempered rau S, 1/8 tawv rau 8, 1/4 tawv rau 4, 1/2 tawv rau 2.

Cov lej tiav ntawm qhov chaw: tsis muaj qhov ci ntsa iab rau D, qhov ci ntsa iab rau B. Xws li SPCCT-SD qhia txog tus qauv tempered, tsis muaj qhov ci ntsa iab tiav cov ntawv carbon txias dov rau kev siv dav dav. Tom qab ntawd SPCCT-SB qhia txog tus qauv tempered, ci ntsa iab tiav, cov ntawv carbon txias dov nrog cov khoom siv kho tshuab lav.