Common Japanese Qib Rau Ordinary Thiab Mechanical Structural Steel Phaj Ntawm Cov Ntawv Hlau

1. Ordinary structural steel nyob rau hauv cov qib ntawm Japanese steel (JIS series) feem ntau muaj peb seem: thawj feem qhia cov khoom, xws li: S (Steel) rau steel, F (Ferrum) rau hlau; Qhov thib ob qhia txog cov duab sib txawv, hom, thiab kev siv, xws li P (Plate) rau phaj, T (Tube) rau raj, K (Kogu) rau cov cuab yeej; qhov thib peb qhia tus yam ntxwv tus lej, uas feem ntau yog qhov tsawg kawg nkaus tensile lub zog. Piv txwv li: SS 400 - thawj S sawv cev rau steel (Steel), qhov thib ob S sawv cev rau "Structure" (Structure), 400 yog qhov qis qis tensile zog ntawm 400MPa, thiab tag nrho qhia cov qauv zoo tib yam steel nrog ib tensile zog ntawm 400MPa.
2. SPHC - thawj S yog cov ntawv luv ntawm Steel, P yog cov ntawv luv ntawm Plate, H yog cov ntawv luv ntawm tshav kub, thiab C yog cov ntawv luv ntawm Kev Lag Luam. Tag nrho cov qhia dav dav dav hlau kub dov steel phaj thiab strips.
3. SPHD - qhia tias kub-kuav los tiag steel daim hlau thiab strips rau stamping.
4. SPHE-xws li kub-kuav los tiag steel ntawv thiab strips rau kev sib sib zog nqus nqus.
5. SPCC-xws li cov ntawv txias-kuav los tiag carbon steel ntawv thiab strips rau kev siv dav dav. Qhov thib peb tsab ntawv C yog lub ntsiab lus ntawm Txias. Thaum qhov kev xeem tensile yuav tsum tau lav, ntxiv T thaum kawg ntawm qib rau SPCT.
6. SPCD-qhia cov ntawv txias-kuav los tiag carbon steel ntawv thiab strips rau stamping, sib npaug rau Tuam Tshoj tus 08AL (13237) high-quality carbon structural steel.
7. SPCE-qhia cov ntawv txias-kuav los tiag carbon steel ntawv thiab strips rau kev sib sib zog nqus nqus, sib npaug rau Tuam Tshoj tus 08AL (5213) sib sib zog nqus nqus hlau. Thaum tsis raws sijhawm yuav tsum tau lav, ntxiv N thaum kawg ntawm qib rau SPCEN.
Tempering code rau txias-dov carbon steel nplooj ntawv thiab strips: annealing xeev yog A, tus qauv tempering yog S, 1/8 nyuaj yog 8, 1/4 nyuaj yog 4, 1/2 nyuaj yog 2, thiab nyuaj yog 1.
Cov txheej txheem deg: matte tiav yog D, ci tiav yog B. Piv txwv li, SPCC-SD qhia txog cov ntawv txias txias-kuav los tiag nrog cov txheej txheem quenching thiab tempering thiab matte tiav. Lwm qhov piv txwv yog SPCCT-SB, uas qhia txog cov ntawv txias-dov cov pa roj carbon monoxide nrog cov txheej txheem quenching thiab tempering thiab ci ua haujlwm, thiab yuav tsum tau lav cov khoom siv kho tshuab.
8. JIS mechanical qauv steel qib yog sawv cev los ntawm: S + carbon ntsiab lus + tsab ntawv code (C, CK), qhov twg cov ntsiab lus carbon yog sawv cev los ntawm tus nqi nruab nrab × 100, thiab tsab ntawv C qhia carbon K qhia carburizing steel. Piv txwv li, cov pa roj carbon ntsiab lus ntawm cov ntawv yob S20C yog 0.18-0.23%.