Koj pom 316 thiab 316L stainless hlau tau teev tseg txhua lub sijhawm, tab sis qhov sib txawv tiag tiag tsis yog ib tsab ntawv ntawm cov ntaub ntawv. Nws yog nyob rau hauv cov welds, lub qhov corrosion, thiab cov khoom uas rov qab los ntawm lub tshav pob. Ntau dhau lawm xav tias lawv hloov pauv tau. Lawv tsis yog, thiab kuv tau pom qhov kev xav tias kim heev.
Cov ntsiab lus carbon: Nws tsis yog tus lej xwb
Lub ntsiab sib txawv yog carbon. 316 muaj qhov siab tshaj plaws ntawm 0.08%, thaum 316L stainless hlau cap nws ntawm 0.03%. Suab tsis tseem ceeb, txoj cai? Hauv kev xav, tej zaum. Tab sis nyob rau hauv kev xyaum, cov pa roj carbon xav ua ke nrog chromium thaum lub sij hawm vuam, tsim chromium carbides txoj cai nyob rau hauv lub grain ciam teb. Qhov no rhiab heev nyiag cov chromium uas muab cov hlau nws corrosion kuj, tawm hauv ib txoj kev yooj yim raws li weld tshav kub-cuam tshuam cheeb tsam. Rau ib feem uas cia li zaum ntawd, tej zaum nws zoo. Rau txhua yam uas ntsib chlorides los yog acids, nws yog ib qho kev teeb tsa ua ntej.
Kuv nco qab ib pawg ntawm lub cev valve rau cov neeg siv tshuaj lom neeg. Cov ntawv luam tsuas yog hais tias 316 stainless. Lub khw, sim txuag ob peb bucks ib kilo, siv tus qauv 316 bar Tshuag. Cov khoom tau zoo nkauj machined, dhau thawj zaug tshuaj xyuas. Tab sis rau lub hlis tom qab, peb tau txais cov duab: zoo, kab laug sab-web-zoo li cov kab nrib pleb emanating los ntawm txhua qhov weld seam. Intergranular corrosion kuj. Tus neeg siv khoom yog, nkag siab, npau taws. Yog thaum koj kawm nug, tam sim ntawd: Puas yog qhov no yuav raug welded? Qhov kev pabcuam ib puag ncig yog dab tsi? Yog tias cov lus teb yog muaj rau vuam, koj thawb rau qib L. Tsis muaj kev sib cav.
Qhov no yog vim li cas tus neeg muag khoom cov khoom siv traceability tseem ceeb. Ib lub tuam txhab zoo li QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. (QSY), nrog lawv peb lub xyoo caum hauv casting thiab machining, yuav tau txais qhov no. Thaum koj ua peev casting los yog CNC machining cov khoom uas yuav yog ib feem ntawm lub rooj sib txoos loj dua, pib nrog cov qib qis carbon tsis yog ib qho kev xaiv - nws yog qhov kev xaiv zoo xwb. Lawv cov kev paub nrog tshwj xeeb alloys yuav txhais tau tias lawv tau pom qhov tshwm sim ntawm cov khoom siv missteps ua ntej.
Machinability thiab Formability: Lub Khw Pem Teb Qhov Tseeb
Wb tham txog kev txiav thiab shaping. Tsis yog 316 lossis 316L yog tus kws kho tshuab npau suav-lawv gummy, lawv ua haujlwm hnyav zoo li vwm yog tias koj tsis ceev faj. Tab sis ntawm ob, kuv yuav muab ib tug me ntsis ntug rau 316L rau machining stability nyob rau hauv complex qhov chaw. Cov pa roj carbon qis zoo li ua rau muaj qhov sib txawv me ntsis ntawm cov nti tawg, tsis tshua muaj kev nyiam ua rau ntawm lub cuab yeej, tshwj xeeb tshaj yog nyob rau hauv kev ua haujlwm tas li xws li tig cov profiles rau lub twj tso kua mis impellers.
Rau kev tsim los yog forging, 316L feem ntau yog kev zam txim ntau dua. Nws lub zog qis zog thiab siab dua ductility thaum pib ua rau nws yooj yim rau thawb mus rau hauv qhov sib txawv plhaub molding qauv tsis muaj springback teeb meem. Peb ib zaug yuav tsum sib sib zog nqus-kos ib co nyias-walled khob los ntawm 316 daim ntawv. Thawj qhov kev khiav nrog tus qauv 316 tau ua rau 30% seem ntawm micro-cracks ntawm lub vojvoog kos. Hloov mus rau 316L, thiab qhov teeb meem zoo li ploj mus. Cov khoom cia li ntws zoo dua.
Qhov no yog lub ntsiab lus tseem ceeb rau fabricators. Yog hais tias koj tab tom nrhiav pre-formed castings los yog machined blanks, qhia qhov tseeb qib rau cov txheej txheem tsim yog ib nrab ntawm kev sib ntaus sib tua. Tus khub uas nkag siab txog cov txheej txheem, zoo li qhov koj yuav pom ntawm tsi.com, tsis yog muag koj cov hlau xwb; lawv siv lawv CNC machining thiab nrum kev paub los xaiv cov qib uas yuav coj tau kwv yees nyob rau hauv lawv cov cuab yeej thiab pwm, txuag txhua tus neeg mob taub hau hauv kab.
Corrosion Myth thiab Molybdenum Tseeb
Ib qho lus dab neeg hais tias 316L yog corrosion resistant ntau tshaj 316. Tsis raws nraim. Lawv lub hauv paus tsis kam, muab los ntawm 2-3% molybdenum thiab chromium-nickel matrix, yog zoo tib yam hauv lub xeev annealed, tsis-welded. Lub molybdenum yog tus yuam sij-nws yog dab tsi ua rau qhov tsis zoo rau pitting thiab crevice corrosion nyob rau hauv chloride ib puag ncig tshaj 304. Qhov zoo ntawm qib L yog tsuas yog khaws cia qhov kev tiv thaiv tom qab thermal cycles xws li vuam.
Tab sis ntawm no yog ib tug nuance: nyob rau hauv heev oxidizing acids (zoo li nitric), zaj dab neeg yuav tig. Muaj qee cov ntaub ntawv thiab cov ntaub ntawv pov thawj los ntawm cov txhais tes qub uas tus qauv 316 tuaj yeem ua tau zoo dua qub hauv cov cheeb tsam tshwj xeeb, tsis yog chloride. Ib yam dab tsi hais txog cov yeeb yaj kiab passive stability. Kuv tsis tau twv qhov project rau nws, tab sis nws yog ib qho kev ceeb toom tias cov ntaub ntawv tshawb fawb tsis tshua muaj tseeb. Koj yuav tsum paub tus yeeb ncuab tiag tiag ntawm qhov tab tom ntsib.
Rau cov txheej txheem marine, tshuaj, los yog zaub mov ua daim ntawv thov - qhov twg chlorides, organic acids, los yog sterilizing tov - lub welded superiority ntawm 316L stainless hlau ua nws lub neej ntawd. Nws yog qhov kev nyab xeeb, ntau yam kev xaiv rau cov khoom siv fabricated. Thaum kuv saib cov ntaub ntawv ntawm tus kws tshaj lij xws li QSY, uas suav nrog cov hlau thiab npib tsib xee-raws li alloys rau cov haujlwm hnyav dua, nws qhia tau tias lawv tau siv los cuam tshuam nrog cov nuanced, daim ntawv thov-tsav specifications, tsis yog tsuas yog txav cov khoom siv hlau.
Nqi thiab Sourcing: Cov Tswv Yim Calculus
Yog lawm, 316L feem ntau nqa tus nqi me me. Tab sis qhov kev txheeb xyuas tus nqi no tsis muaj tseeb yog tias nws nres ntawm daim ntawv them nqi raw khoom. Koj yuav tsum suav nrog tag nrho cov nqi ntawm fabrication thiab lifecycle. Yog tias siv tus qauv 316 txhais tau hais tias koj yuav tsum tau muab cov welds kom yaj cov carbides (ib qho ntxiv, kim, thiab feem ntau cuam tshuam cov kauj ruam), lossis koj yuav muaj kev pheej hmoo ntawm kev ua tsis tiav, lej hloov tam sim ntawd. Qib L feem ntau tshem tawm qhov kev kho cua sov tom qab vuam xav tau.
Kev muag khoom yog lwm qhov. Nrog lub ntiaj teb no thawb rau standardized, weldable structural stainless, 316L yog feem ntau yooj yim nyob rau hauv ib tug ntau yam ntawm cov ntaub ntawv - phaj, yeeb nkab, fittings, castings - dua tus qauv 316. Sim nrhiav ib tug tshwj xeeb loj nyob rau hauv qhov tseeb 316 bar Tshuag rau ib tug machining txoj hauj lwm tej zaum yuav siv sij hawm ntau lub lis piam ntev tshaj li nrhiav nws 316L counterpart.
Qhov kev muaj no pub rau cov khoom lag luam txhim khu kev qha rau cov tuam ntxhab. Kev ua haujlwm ntev, xws li Qingdao Qiangsenyuan Technology Co., Ltd., uas hais txog cov ntaub ntawv zoo li stainless hlau thiab tshwj xeeb alloys, tej zaum yuav tau tsim raws rau cov qib zoo. Lawv cov keeb kwm 30 xyoo qhia tias lawv tau tsim kev sib raug zoo rau qhov chaw tsis yog hlau, tab sis cov hlau raug rau txoj haujlwm, uas feem ntau yog txoj haujlwm nyuaj.
Daim Ntawv Thov Kev Txiav Txim: Thaum Yuav Siv Qhov twg
Yog li, txoj cai yooj yim ntawm tus ntiv tes xoo: yog tias nws yuav raug welded thiab fim kev pabcuam corrosive, siv 316L stainless hlau. Tag nrho nres. Qhov no suav nrog 90% ntawm cov ntawv thov kev lag luam - cov kav dej, cov hlab ntsha siab, cov khoom noj khoom haus, cov khoom siv hauv hiav txwv, cov chaw muag tshuaj. Qhov kev ntseeg siab ntxiv yog tsim nyog rau tus nqi me me sib txawv.
Thaum twg koj tuaj yeem xav txog tus qauv 316? Rau cov khoom uas tsis yog-welded, los yog daim ntawv thov qhov kub-kub lub zog (siab tshaj li 800 ° F) yog ib qho kev txhawj xeeb tseem ceeb, vim tias cov pa roj carbon ntau dua me ntsis tuaj yeem muab lub zog zoo dua. Xav txog qee qhov chaw rauv taws, tsis yog vuam shafts, lossis qee qhov fasteners. Tab sis txawm li ntawd los, koj tab tom ua lag luam muaj peev xwm kub-kub tau txais txiaj ntsig rau kev nplua weldability. Nws yog kev xaiv niche.
Thaum kawg, nws los rau cov lus qhia tshwj xeeb. Nws tsis yog hais txog ib qib zoo dua, tab sis hais txog ib qho uas tsim nyog dua. Lub hom phiaj yog kom phim cov khoom siv hauv lub cev rau cov txheej txheem tsim khoom thiab kev tsim txom thaum kawg. Qhov ntawd yog hom kev txiav txim siab zoo uas cais cov khoom lag luam los ntawm tus khub tsim khoom tiag. Nws yog qhov sib txawv ntawm tsuas yog ua ib qho duab thiab xa cov khoom uas ua tau, thiab kav ntev, hauv lub ntiaj teb tiag.
