Thaum koj hais tias '410 stainless hlau', ntau tus neeg, txawm tias qee tus neeg yuav khoom, tam sim ntawd xav tias 'stainless, zoo rau txhua yam'. Qhov ntawd yog thawj ntxiab. Nws yog martensitic, uas txhais tau hais tias nws hardens nrog kev kho cua sov, tsis zoo li qhov ntau 304. Nws yog hlau nplaum, nws tuaj yeem xeb yog tias koj thawb nws, thiab nws cov weldability yog ib qho kev sib tham tag nrho. Kuv tau pom ntau cov duab kos qhov twg nws yog spec'd vim tias nws yog qhov kev xaiv pheej yig dua, tsis xav txog qhov kev pabcuam ib puag ncig lossis kev ua haujlwm tom qab xav tau. Nws tsis yog qhov poob rau hauv kev hloov pauv rau 304 lossis 316. Kev ua tsis ncaj ncees ua rau cov khoom tsis ua haujlwm hauv cov huab cua corrosive lossis tawg thaum tsim khoom. Qhov kev paub tiag tiag tsis yog nyob rau hauv daim ntawv teev cov ntaub ntawv muaj pes tsawg leeg (11.5-13.5% Cr, puas yog?), tab sis nyob rau hauv kev paub thaum twg yuav siv nws, yuav ua li cas tshuab nws, thiab qhov tseem ceeb, yuav ua li cas kom sov kho nws rau txoj hauj lwm.
Cov yam ntxwv ntawm cov khoom siv thiab kev siv tsis raug
Qhov tseem ceeb thov ntawm 410 stainless hlau yog nws ua ke ntawm nruab nrab corrosion kuj, dlej mechanical zog tom qab hardening, thiab kuj tsis tshua muaj nqi. Qhov 'nruab nrab' yog tus yuam sij. Hauv qhov chaw me me lossis qhov chaw dej tshiab, nws zoo. Tab sis pov rau hauv cov tshuaj chlorides, acids, los yog txawm tias tsis tu ncua ya raws nrog cov kab mob, thiab koj yuav pom qhov xeb. Nws tsis yog qib marine. Kuv nco qab ib pawg ntawm cov fasteners rau cov qauv siv dej hiav txwv uas tau teev tseg 410 kom txuag tau tus nqi. Lawv pom cov xim av tseem ceeb hauv rau lub hlis. Tus neeg siv tau chim siab, tab sis qhov spec tsis yog rau ib puag ncig. Peb yuav tsum hloov mus rau 316 rau kev hloov.
Qhov twg nws ci yog nyob rau hauv daim ntawv thov xav tau hardness thiab hnav tsis kam. Xav txog cov twj tso kua mis, cov khoom siv valve, cutlery, lossis turbine hniav. Tab sis ntawm no yog qhov ntes: qhov hardness los ntawm kev kho cua sov. Nyob rau hauv lub annealed mob, nws yog heev machinable. Thaum koj harden nws, hais, HRC 40-45, machining dhau los ua haujlwm tshwj xeeb. Koj xav tau cov cuab yeej zoo, nrawm, thiab pub. Yog tias koj tab tom nrhiav ib feem, koj yuav tsum ua kom pom tseeb nrog koj tus neeg muag khoom txog qhov kawg yuav tsum tau ua. Koj puas xav kom nws muab annealed rau koj tshuab thiab kho? Los yog koj puas xav tau nws tag nrho hardened thiab av? Qhov sib txawv ntawm kev sib txuas lus no ua rau ncua sij hawm ntau dua li txhua yam.
Qhov no yog qhov chaw tsim khoom thiab lub khw muag khoom nrog cov khoom siv sib sib zog nqus yog qhov tseem ceeb. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog rau lawv 30 xyoo nyob rau hauv casting thiab machining, feem ntau yuav lis no seamlessly. Lawv yuav cam khwb cia ib feem siv lawv lub plhaub los yog peev txheej txheem, ces mus rau qhov tsim nyog annealing, ntxhib machining, kev kho cua sov (quenching thiab tempering rau lub hardness) thiab zaum kawg precision. CNC machining los yog sib tsoo. Sim faib cov theem no ntawm ntau tus neeg muag khoom uas tsis ua raws li cov khoom siv tus cwj pwm yog thov kom muaj teeb meem nrog kev ruaj ntseg los yog tawg.
The Heat Treatment Dance: Tau Txais Nws Txoj Cai thiab Nws mus qhov twg
Kev kho cua sov 410 yog nws tus kheej kos duab. Lub voj voog txheej txheem suav nrog austenitizing ib puag ncig 980-1010 ° C, roj quenching, thiab tom qab ntawd tempering. Lub tempering kub dictates qhov kawg hardness thiab toughness sib npaug. Lower tempering (nyob ib ncig ntawm 200-400 ° C) muab cov hardness ntau dua tab sis muaj kev cuam tshuam qis dua. Mus siab dua (600-700 ° C), thiab koj tau zoo dua toughness tab sis qis hardness. Koj yuav tsum phim qhov no rau qhov ua haujlwm.
Ib qho kev mob taub hau yog distortion. Tshwj xeeb tshaj yog nrog complex cam khwb cia los yog machined qhov chaw, quenching qhia kev nyuaj siab thiab warpage. Rau ib tug precision tivthaiv zoo li ib tug ncej lossis lub rooj zaum valve, qhov no tuaj yeem ua rau muaj kev puas tsuaj. Peb ib zaug muaj kev khiav ntawm peev cam khwb cia valve discs uas tawm los ntawm tshav kub kho nrog runout tshaj li salvageable txwv. Txoj kev daws teeb meem? Qee lub sij hawm nws yog hais txog fixturing thaum lub sij hawm quench, qee zaum nws yog hais txog kev ntxhov siab nyob rau theem nrab thaum lub sij hawm machining ntxhib, thiab qee zaum koj yuav tsum tau siv nyiaj rau kev sib tsoo nyuaj tom qab kev kho cua sov kom rov qab tau cov duab geometry. Nws yeej tsis cia li 'xa nws rau hardening'.
Lwm qhov hloov maj mam yog qhov txias txias thaum lub sij hawm casting nws tus kheej. Rau peev cast Cheebtsam, cov qauv li-cam khwb cia tuaj yeem cuam tshuam qhov sib npaug nws teb li cas rau kev kho cua sov tom ntej. Lub foundry uas nkag siab txog qhov no yuav tswj lawv cov txheej txheem tsis ua haujlwm los tsim cov qauv zoo dua qub, muab cov txiaj ntsig xav tau ntau hauv qab. Qhov no tsis yog cov ntaub ntawv kawm; nws tau sau cov txheej txheem kev paub los ntawm kev khiav ntau txhiab cua sov thiab casts.
Machining thiab Fabrication Notes los ntawm Lub Khw Pem Teb
Machining annealed 410 yog qhov ncaj ncaj-nws coj zoo li cov hlau tsis tshua muaj hlau. Siv cov cuab yeej zoo rake, zoo coolant, thiab koj zoo. Qhov kev sib tw yog nrog cov khoom siv tawv tawv lossis txawm tias 'ib nrab tawv' mob. Cov cuab yeej carbide yog ib qho yuav tsum tau ua, thiab cov khoom siv ceramic lossis CBN tuaj yeem xav tau rau cov khoom ntim siab ntawm cov khoom tawv. Cov ntaub ntawv nyhav ua hauj lwm-harden, yog li koj xav tau aggressive txaus txiav kom tau nyob rau hauv lub hardened txheej tsim los ntawm yav dhau los lub cuab tam pass. Lub teeb, skimming txiav yuav cia li hlawv koj lub cuab yeej.
Vuam yog ib qho kev mob tsis zoo nrog 410 stainless hlau. Nws suav hais tias yog weldable, tab sis nrog cov caveats loj. Ua ntej cua sov (nyob ib ncig ntawm 200 ° C) thiab Kev Kho Mob Tom Qab Kub Kub (PWHT) yuav luag txhua qhov yuav tsum tau ua kom tsis txhob muaj qhov kub hnyiab hauv thaj chaw muaj kev kub ntxhov (HAZ). HAZ yuav nyuaj thiab nkig yog tias koj tsuas yog welded thiab tawm nws. Kuv tau pom welded cov rooj sib txoos tawg audibly thaum txias rau hauv pem teb khw. Rau kev kho welds lossis fabrications, siv 309L muab tub lim hlau yog ib qho ua kom paub ntau dua austenite thiab txhim kho kev tawg. Tab sis ua siab ncaj, yog tias tus qauv tsim muaj qhov tseem ceeb ntawm vuam ntawm 410, nws tsim nyog rov ntsuas cov khoom xaiv.
Daim ntawv thov tiag tiag thiab kev xav txog kev muag khoom
Yog li qhov twg 410 tiag tiag ua rau kev nkag siab? Nws yog zoo meej rau qhuav-khiav mechanical Cheebtsam. Bushings, gears, thiab fasteners nyob rau hauv cov khoom siv roj & roj (qhov chaw ib puag ncig yog tswj, tsis yog lub taub hau), daim ntawv zeb machinery qhov chaw raug puas tsuaj, thiab cov khoom siv ua zaub mov qhov twg corrosion mob me tab sis yuav tsum tau huv si. Nws qhov siab zog-rau-qhov hnyav piv tom qab kev kho mob kuj yog ib qho txiaj ntsig.
Thaum muab khoom, koj tsis yog yuav khoom xwb, koj tab tom yuav cov txheej txheem muaj peev xwm. Koj xav tau ib tus neeg muag khoom uas tau txais tag nrho cov saw hlau. Saib QSY's Scope-plhaub molding, peev casting, CNC machining, thiab kev paub nrog cov alloys tshwj xeeb - nws qhia tias lawv tau teeb tsa rau hom kev sib xyaw ua ke no. Rau qhov tseem ceeb rotating ib feem ua los ntawm 410, koj xav kom lawv nrum nws, tshav kub kho nws nyob rau hauv kev tswj tej yam kev mob, thiab ces tiav tshuab nws, tag nrho nyob rau hauv ib lub ru tsev. Qhov no tswj cov variables. Xa cov cam khwb cia dawb paug tawm mus rau lub tshuab kho cua sov generic thiab tom qab ntawd mus rau lub khw muag khoom sib cais qhia ntau qhov kev sib tw uas cov lus qhia tshwj xeeb tuaj yeem tau diluted.
Tus nqi yeej ib txwm muaj. 410 zaum hauv qhov chaw qab zib ntawm carbon steels thiab ntau dua nickel austenitic stainless hlau. Tab sis tag nrho cov nqi yuav tsum suav nrog kev ua haujlwm. Ib feem uas yuav tsum tau intricate machining tom qab hardening yuav kim dua ib tug tsim rau kev sib tsoo. Ib tus khub zoo engineering yuav qhia txog cov kev lag luam tawm thaum ntxov.
Kev xav zaum kawg: Nws yog tus kws tshaj lij, tsis yog tus kws tshaj lij
Txhawm rau qhwv qhov no, 410 stainless hlau yog ib qho khoom siv zoo heev, tab sis nws xav tau kev hwm. Nws tsis yog 'stainless steel' hauv kev sib tham, teeb-nws-thiab-tsis nco qab-nws qhov kev nkag siab. Nws tus cwj pwm yog qhov tseem ceeb khi rau nws cov keeb kwm thermal. Kev vam meej nrog nws los ntawm kev kho nws raws li ib qho system: tsim rau manufacturability, qhia meej qhov yuav tsum tau tus mob precisely, xaiv ib tug fabricator nrog proven metallurgical thiab ua chops, thiab yeej tsis xav tias nws corrosion kuj.
Qhov kev ua tsis tiav kuv tau pom yuav luag ib txwm taug qab mus rau ib qho ntawm cov kev sib txuas tsis muaj zog - tus tsim qauv kho nws zoo li 304, tus neeg yuav khoom tsuas yog cov nqi ib feem, lossis lub khw muag khoom tsis muaj cov txheej txheem kho cua sov. Thaum cov saw hlau muaj zog, 410 tsim cov khoom siv ruaj khov, cov nqi siv tau zoo uas kav ntev. Nws yog ib tug workhorse, tab sis ib tug uas xav tau ib tug txawj handler.
