Kev kub siab stainless hlau raj manufacturers
316L yog hom stainless hlau, AISI 316L yog cov khoom lag luam Asmeskas sib xws thiab Sus 316L yog cov khoom lag luam Nyij Pooj. Tuam Tshoj txoj kev sib koom ua ke digital code yog s31603, tus qauv hom yog 022cr17ni12mo2 (tus qauv tshiab), thiab lub npe qub yog 00Cr17Ni14Mo2, uas qhia tau hais tias nws feem ntau muaj Cr, Ni thiab Mo, thiab tus lej qhia txog qhov kwv yees feem pua. Lub teb chaws tus qauv yog GB / T 20878-2007 (tam sim no tsab). 316L yog dav siv hauv kev lag luam tshuaj vim nws zoo heev corrosion kuj. 316L kuj yog ib qho derivative hlau ntawm 18-8 austenitic stainless hlau, nrog 2 ~ 3% Mo ntxiv. Raws li 316L, ntau qib steel kuj tau muab los. Piv txwv li, 316Ti yog muab los tom qab ntxiv me me ntawm Ti, 316N yog muab los tom qab ntxiv me me ntawm N, thiab 317L yog muab los ntawm kev nce cov ntsiab lus ntawm Ni thiab mo.
Feem ntau ntawm 316L uas twb muaj lawm nyob rau hauv kev ua lag luam yog tsim raws li Asmeskas cov qauv. Nyob rau hauv kev txiav txim siab ntawm tus nqi, steel mills feem ntau txwv cov Ni cov ntsiab lus ntawm cov khoom mus rau qhov tsawg kawg nkaus kom deb li deb tau. Cov txheej txheem Asmeskas tau teev tseg tias Ni cov ntsiab lus ntawm 316L yog 10 ~ 14%, thiab cov txheej txheem Nyij Pooj tau hais tias Ni cov ntsiab lus ntawm 316L yog 12 ~ 15%. Raws li tus txheej txheem yam tsawg kawg nkaus, muaj qhov sib txawv ntawm 2% hauv Ni cov ntsiab lus ntawm American Standard thiab Japanese tus qauv, uas yog xav txog tus nqi. Yog li ntawd, cov neeg siv khoom tseem yuav tsum tau saib seb cov khoom puas xa mus rau ASTM lossis JIS tus qauv thaum yuav khoom 316L.
Cov ntsiab lus Mo ntawm 316L ua rau cov hlau muaj qhov zoo heev pitting corrosion kuj thiab tuaj yeem siv tau zoo rau ib puag ncig uas muaj halogen ions xws li Cl -. Txij li thaum 316L feem ntau yog siv rau nws cov khoom siv tshuaj, steel mills muaj qhov yuav tsum tau qis dua rau kev tshuaj xyuas saum npoo ntawm 316L (piv nrog 304), thiab cov neeg siv khoom uas xav tau ntau dua saum npoo yuav tsum ntxiv dag zog rau kev tshuaj xyuas saum npoo.
Qhov ob feem ntau siv stainless hlau 304316 (los yog 1.4308,1.4408 sib haum rau German / European qauv), qhov sib txawv tseem ceeb ntawm 316 thiab 304 hauv tshuaj muaj pes tsawg leeg yog 316 muaj Mo, thiab nws feem ntau lees paub tias 316 muaj kev tiv thaiv corrosion zoo dua thiab yog corrosion resistant ntau tshaj 304 nyob rau hauv kub kub ib puag ncig. Yog li ntawd, nyob rau hauv qhov kub thiab txias ib puag ncig, engineers feem ntau xaiv 316 qhov chaw. Tab sis qhov hu ua yam tsis yog kiag li. Nyob rau hauv ib puag ncig sulfuric acid, tsis txhob siv 316 ntawm qhov kub thiab txias. Txwv tsis pub, nws yuav loj. Cov neeg uas kawm mechanics tau kawm tag nrho cov xov. Kuv tseem nco ntsoov cov roj nplaum dub uas yuav tsum tau siv los tiv thaiv cov xov los ntawm kev kub siab: molybdenum disulfide (MoS2), los ntawm ob qhov kev txiav txim siab tuaj yeem kos: ua ntej, Mo yog qhov tseeb cov khoom siv kub-resistant (koj puas paub. Dab tsi crucible kub yog melted nyob rau hauv? Molybdenum crucible!). 2: Molybdenum yooj yim reacts nrog siab valence sulfur ions los ua sulfide. Yog li ntawd, tsis muaj stainless hlau yog super invincible thiab corrosion resistant. Hauv kev ntsuam xyuas zaum kawg, stainless hlau yog cov hlau uas muaj impurities ntau dua (tab sis cov impurities no ntau dua corrosion-resistant dua hlau). Yog tias nws yog hlau, nws tuaj yeem hnov mob nrog lwm yam tshuaj.
