Warranty muag ntawm 30CrMo alloy steel yeeb nkab chaw tsim tshuaj paus
16Mn yog cov hlau tsis tshua muaj siab-lub zog steel: cov ntsiab lus carbon yog 0.1% - 0.25%, thiab cov ntsiab lus tseem ceeb ntawm manganese, silicon, vanadium, niobium thiab titanium ntxiv; Nws tag nrho cov ntsiab lus alloy yog tsawg dua 3%. Raws li lub zog, nws muab faib ua plaub theem: 300, 350, 400 thiab 450MPa. Muaj feem ntau yog q295, Q345, Q390, Q420 thiab Q460 "Q" yog Suav Pinyin peev ua ntej ntawm lo lus "Qu" uas yields, thiab tus lej tom ntej yog qhov tsawg kawg nkaus taw tes ntawm hom (σ s) Cov cim tom ntej yog muab faib ua a, B, C thiab d raws li cov ntsiab lus ntawm impurity ntsiab (sulfur thiab phosphorus) nyob rau hauv cov hlau los ntawm siab mus rau qis thiab nrog kev hloov ntawm carbon thiab manganese. Ntawm lawv, Qib A thiab B steels feem ntau hu ua 16Mn.
Raws li lub zog, nws muab faib ua plaub theem: 300, 350, 400 thiab 450MPa.
Muaj feem ntau yog q295, Q345, Q390, Q420 thiab Q460.
16Mn seamless steel yeeb nkab
16Mn seamless steel yeeb nkab
16Mn seamless steel yeeb nkab yog ib yam khoom. Seamless steel yeeb siv los hu ua seamless steel yeeb nkab.
Txoj kev tam sim no yog: Q345B seamless steel yeeb nkab. Cov ntaub ntawv zoo sib xws yog Q345C, Q345D thiab Q345E. Cov cim qib zoo a, B, C, de qhia cov kev xav tau sib txawv rau kev xeem. Qhov ntsuas qhov ntsuas kub yog + 20 ° 0 ° txog 20 ° 40 ° raws. 16Mn yog cov khoom siv seamless steel yeeb nkab.
ABCD qhia txog qib Q235. Cov qib zoo tau muab faib ua plaub qib A, B, C thiab D. los ntawm a mus rau D qhia qhov zoo ntawm qis mus rau siab.
Cov kev xav tau rau cov qib zoo sib txawv yog raws li hauv qab no:
A - muab s, P, C, Mn, Si tshuaj muaj pes tsawg leeg thiab Fu, FY δ 5 (δ 10), 1800 txias dabtsi yog khoov kuaj tuaj yeem muab raws li tus neeg yuav khoom xav tau, tab sis tsis muaj kev cuam tshuam lub zog, thiab cov ntsiab lus carbon thiab cov ntsiab lus manganese tsis raug coj los ua cov khoom xa tuaj.
B - muab s, P, C, Mn, Si chemical muaj pes tsawg leeg thiab Fu, FY δ 5 (δ 10), txias khoov 180 'test. Nws kuj tseem muab kev cuam tshuam lub zog AK ≥ 27j ntawm + 200C - ntxiv rau qhov yuav tsum tau muaj ntawm chav kawm B, nws kuj muab kev cuam tshuam lub zog AK ≥ 27j ntawm 00C.
C - ntxiv rau qhov yuav tsum tau ntawm qib B, qhov cuam tshuam lub zog AK ≥ 27j ntawm - 200C kuj tau muab. E - ntxiv rau qhov yuav tsum tau ua ntawm qib B, qhov cuam tshuam lub zog AK ≥ 27j ntawm - 400C kuj tau muab.
