Steel Q195, Q235, qhov sib txawv ntawm cov khoom siv?

Dab tsi yog qhov txawv ntawm Q195, Q215, Q235, Q255 thiab Q275 ntawm cov khoom siv?

Carbon structural steel yog feem ntau siv hlau, feem ntau ntawm cov feem ntau dov mus rau hauv steel, profiles thiab profiles, feem ntau tsis tas yuav tsum tau kub-kho ncaj qha siv, feem ntau yog rau cov qauv thiab engineering.

Q195, Q215, Q235, Q255 thiab Q275, thiab lwm yam, ntsig txog, qhia cov qib steel, qib steel los ntawm tus neeg sawv cev ntawm cov ntsiab lus ntawm tsab ntawv (Q), cov txiaj ntsig taw tes tus nqi, zoo, zoo thiab lwm yam cim (A , B, C, D) deoxygenation txoj kev ntawm cov cim thiab thiaj li nyob rau hauv plaub qhov chaw ntawm lub sequential muaj pes tsawg leeg. Los ntawm cov tshuaj muaj pes tsawg leeg, qib steel me me Q195, Q215, Q235, Q255 thiab Q275 qib loj, qhov siab dua cov ntsiab lus carbon, cov ntsiab lus manganese, qhov ruaj khov nws cov yas. Mechanical zog los ntawm cov ntsiab lus, cov qib saum toj no qhia tau hais tias lub thickness ≤ 16 hli ntawm cov yield point ntawm steel. Nws lub zog tensile yog: 315-430, 335-450, 375-500, 410-550, 490-630 (obN / mm2); qi nws elongation yog: 33, 31, 26, 24, 20 (0.5%). Yog li ntawd, thaum qhia steel 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 tsim nyog, thiaj li tsis cuam tshuam rau cov khoom zoo.

 

Dab tsi yog qhov txawv ntawm Q235A thiab Q235B cov ntaub ntawv?

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

 

Japanese steel qib yog SPHC, SPHD, thiab lwm yam. Lawv txhais li cas?

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

 

SPHD----- txhais tau tias kub dov steel ntawv thiab sawb rau stamping.

SPHE------ qhia txog cov ntawv kub dov steel thiab strips rau kev sib sib zog nqus nqus.

SPCC------ txhais tau tias txias dov carbon steel ntawv thiab sawb rau kev siv, sib npaug rau Tuam Tshoj Q195-215A qib. Tsab ntawv thib peb C yog cov ntawv luv rau Cold, uas yuav tsum tau ua kom qhov kev xeem tensile thaum kawg ntawm qib ntxiv rau T rau SPCT.

SPCD----- qhia tau hais tias txias dov carbon steel thiab steel sawb rau xuas nrig ntaus, sib npaug rau Tuam Tshoj 08AL (13237) zoo carbon structural steel.

SPCE------ txhais tau tias txias dov carbon steel ntawv thiab sawb rau sib sib zog nqus nqus, sib npaug rau Tuam Tshoj 08AL (5213) xuas nrig ntaus hlau. Txhawm rau kom tsis txhob ua haujlwm, ntxiv N rau SPCEN thaum kawg ntawm qib.

Cold rolled carbon steel ntawv thiab strip designation, annealed mob rau A, txheem tempered rau S, 1/8 nyuaj rau 8, 1/4 nyuaj rau 4, 1/2 nyuaj rau 2.

Nto tiav code: tsis muaj gloss tiav rau D, gloss tiav rau B. Xws li SPCCT-SD qhia tus qauv tempered, tsis muaj gloss tiav txias dov carbon ntawv rau kev siv. Tom qab ntawd SPCCT-SB qhia cov txheej txheem tempered, ci ntsa iab tiav, txias dov carbon ntawv nrog lav cov khoom siv kho tshuab.