Cov lus dab neeg hais txog Titanium Cartridge Heaters Debunked

Nyob rau hauv lub siab -stakes ntiaj teb no ntawm industrial cua sov, cov ntaub ntawv tsis tseeb kis tau sai dua li cov tshuaj tiv thaiv nyob rau hauv lub tank uas tsis zoo tswj. Cov neeg hauv kev ua tshuaj lom neeg, electroplating, kev tsim tshuaj, thiab cov chaw kho dej khib nyiab tseem ntseeg cov ntaub ntawv tsis tseeb txog titanium cartridge rhaub, uas paub tias yog qhov zoo tshaj plaws rau cov kua dej corrosive. Qee tus neeg saib xyuas kev yuav khoom xav tias lawv tsuas yog cov khoom kim kim xwb, thaum lwm tus xav tias lawv yog ib qho - loj- haum-txhua qhov kev daws teeb meem uas tuaj yeem hloov txhua lwm lub rhaub hauv pem teb. Cov tswv yim faulty no tsis yog ua rau kev xaiv tsis zoo; lawv kuj ua rau muaj kev cuam tshuam ntawm kev ua tsis tiav, xws li cov khoom siv khib nyiab, kev kaw thaum muaj xwm txheej ceev, nce nqi txij nkawm, thiab cov xwm txheej kev nyab xeeb uas yuav tsum tau tiv thaiv. Nws yog lub sijhawm los txiav cov suab nrov thiab siv qhov tseeb, tiag - cov ntaub ntawv ntiaj teb, thiab cov lus qhia muaj txiaj ntsig los tawm tsam cov kev ntseeg nrov tshaj plaws uas yuav pab koj txiav txim siab zoo dua.

Cia peb pib nrog cov hauv paus. Lub tshuab hluav taws xob cartridge yog ib qho me me, tubular cua sov caij ua rau kev siv meej thaum qhov chaw txwv. Nws muaj cov tub ntxhais ceramic nrog cov hlau tsis kam (feem ntau nichrome) qhwv ib ncig ntawm nws. Cov tub ntxhais yog muaj siab - purity magnesium oxide (MgO) rwb thaiv tsev thiab npog los ntawm cov hlau sheath. Tag nrho cov khoom haum rau hauv lub qhov drilled, lub tes tsho, los yog immersion zoo, thiab nws sai sai heats pwm, tuag, platens, los yog kua da dej nyob rau hauv ib tug me me cheeb tsam. Lub titanium cartridge rhaub yog tib yam tsim uas tau siv ntau xyoo, tab sis lub sheath yog tsim los ntawm TA2 titanium, uas yog 99.7% ntshiab thiab yog tib qib raws li ASTM Qib 2. Qhov no tsis yog ib qho tshiab lossis "premium upgrade" rau txhua txoj haujlwm; nws yog ib qho cuab yeej tshwj xeeb uas tsim rau qhov chaw corrosive tshaj plaws, qhov twg stainless hlau tawg nyob rau hauv ib lub hlis.


Tswvyim 1: Titanium cartridge heaters raug nqi ntau dhau. Qhov no yog qhov kev tsis txaus siab tshaj plaws uas peb tau txais los ntawm cov kws tsim khoom cog thiab pab pawg yuav khoom. Yog lawm, chav tsev titanium tuaj yeem raug nqi ob mus rau peb zaug ntau npaum li 316L stainless hlau cartridge rhaub rau pem hauv ntej. Cia peb tham txog kev rov qab los ntawm kev nqis peev (ROI), tsis yog tus nqi tag. Stainless hlau cua sov feem ntau ua rau 4 mus rau 8 lub hlis nyob rau hauv cov xwm txheej corrosive, xws li chromic acid electroplating da dej, nitric acid pickling kab, los yog alkaline ntxuav tank, ua ntej lawv pib pit, tawg, los yog leak. Titanium versions feem ntau kav ntev li 3 txog 5 xyoos ntawm kev siv tas li, thiab qee zaum ntev dua.

Nyob rau hauv Midwest, qhov nruab nrab - lub khw electroplating loj yuav tsum tau hloov 48 stainless hlau tso cua sov txhua peb lub hlis ntawm tus nqi ntawm $ 180 ib thooj, ntxiv rau $ 2,400 hauv kev ua haujlwm thiab $ 18,000 hauv kev ua haujlwm poob rau txhua qhov hluav taws xob. Lawv tsis muaj ib qho kev puas tsuaj rau 42 lub hlis tom qab hloov kho rau titanium cartridge rhaub. Hauv thawj peb lub xyoos, tag nrho cov nyiaj khaws cia tau ntau dua $ 140,000. Kev ua lej yog qhov nyuaj: lub "khoom kim" titanium rhaub tau them rau nws tus kheej hauv tsawg dua xya lub hlis. Thaum koj ntxiv nyob rau hauv tsawg downtime, tsawg dua thaum muaj xwm ceev hu, thiab ruaj khov da dej kub uas ua rau cov khoom zoo, titanium dhau los ua tus yeej meej.

Tswvyim 2: Titanium cartridge warmers ua haujlwm hauv txhua qhov xwm txheej. Qhov kev xav no muaj kev phom sij vim nws tuaj yeem tsim kev tsis sib haum xeeb txaus ntshai. Cov neeg hais tias titanium yog heev resistant rau corrosion, tab sis nws tsis yog indestructible. Nws cov titanium dioxide txheej tiv thaiv nws zoo heev los ntawm feem ntau cov kua qaub (sulfuric, hydrochloric, phosphoric), bases, chlorides, thiab ntsev tov uas tsawg mus rau nruab nrab hauv concentration. Tab sis nws muaj qee qhov tsis muaj zog: hydrofluoric acid (txawm tias me me), fluorosilicic acid, fuming nitric acid ntawm ntau tshaj 50%, thiab ntshiab, siab -concentration hydrochloric acid ntawm qhov kub thiab txias. Hauv cov xov xwm no, txheej oxide tawg sai sai, thiab lub tshuab cua sov tuaj yeem yaj hauv lub lis piam.

Peb tau pom cov nroj tsuag poob tag nrho cov titanium installation vim ib tug neeg xav tias "titanium=mos txwv." Kev sib piv los ntawm hom xov xwm yog ib txwm yog txoj hauv kev mus. PTFE (Teflon) sheathed heaters lossis Hastelloy sib npaug yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov tshaj plaws. Cov neeg siv khoom ntse qhia rau cov chaw tsim tshuaj pleev ib ce, concentration, kub, thiab ntws tus nqi ntawm cov kua kom lub rhaub yuav ua tau raws li cov specifications. Hauv qee kis, qhov no tseem suav nrog kev siv palladium-qib qib 7 titanium ruaj khov rau daim ntawv thov ciam teb.

Tswvyim 3: Txhua lub tshuab cua sov ua los ntawm titanium yog tib yam. Yog tias koj saib los ntawm ib qho khoom lag luam catalog, koj yuav pom ntau "titanium cartridge heaters" nrog tus nqi uas nyob thoob plaws qhov chaw. Feem ntau ntawm lawv yog ua rau tus nqi, tsis yog tus qauv. Tsawg- cov neeg muag khoom kawg ntiav nyias- cov raj phab ntsa, rov ua dua lossis qis- purity titanium (qee zaum qis li 95% Ti), thiab pheej yig MgO hmoov uas muaj impurities hauv nws. Dab tsi tshwm sim? Kev xa hluav taws xob tsis zoo, thaj chaw kub kub uas ua rau lub plhaub tawg, thiab hluav taws xob xau hauv ob peb lub hlis xwb.

Hwm titanium cartridge rhaub yuav tsum tau ua raws li cov qauv siab:

TA2 titanium sheath nrog tag nrho cov ntaub ntawv pov thawj (mill test reports)

99.5% los yog ntau dua ntshiab MgO rwb thaiv tsev compressed mus rau ib tug ceev ntawm 2.7 g / cm³

Swaged qauv rau qhov zoo tshaj plaws tshav kub kis tau tus mob thiab resilience rau kev co

Grounded sheath thiab siab -dielectric leads uas tuaj yeem siv rau hauv qhov chaw ntub dej

Rau corrosive lub luag hauj lwm, qhov nto watt ceev yog txwv rau 5.6-7 W / cm².

Koj tuaj yeem pom qhov hloov pauv hauv thaj teb. Ib chav tsev zoo ua kom nws qhov kev tiv thaiv zoo ib yam rau xyoo, thaum pheej yig ib qho drifts, kub dhau, thiab tawg sai dhau. Nco ntsoov nug txog kev taug qab thiab kev txheeb xyuas los ntawm tus neeg thib peb. Koj lub sijhawm ntau lawm nyob ntawm nws.

Tswvyim 4: Koj tuaj yeem siv titanium cartridge tso cua sov uas muaj tib lub watt ntom li stainless hlau. Txawm tias cov engineers muaj caij nyoog tuaj yeem raug ntes los ntawm qhov no. Titanium ua cov cua kub txawv dua li cov hlau tsis muaj steel, thiab nws tsim tau tus kheej - kho oxide txheej uas tuaj yeem raug mob los ntawm qhov kub thiab txias heev. Txoj hauv kev zoo tshaj plaws los tswj cov kua dej corrosive hauv kev lag luam yog khaws qhov txwv ntawm 5.6 W / cm² (36 W / in²). Yog tias koj thawb nws mus rau 12-15 W / cm², zoo li koj xav nrog cov hlau tsis muaj steel hauv dej, koj yuav ua kom kub kub uas ua rau cov oxide zaj duab xis thiab txiav lub neej ntawm cov khoom hauv ib nrab. Yuav kom tsim tau zoo, nws yuav tsum tau ua kom tag nrho submerged. Kev tua hluav taws qhuav yog txoj kev ceev tshaj plaws los tua txawm tias qhov zoo tshaj plaws titanium rhaub.

Cov kab hauv qab tiag tiag: Cov kab hauv qab tiag tiag Titanium cartridge tso cua sov tsis yog khoom kim heev; lawv yog cov peev txheej ntse rau txhua lub lag luam uas ua kom sov cov kua corrosive txhua hnub. Lawv tsis yog tus pheej yig tshaj, lawv tsis ua haujlwm rau txhua tus, thiab lawv tsis yog tib yam. Tab sis yog tias koj tau txais cov khoom siv, kev tsim, thiab daim ntawv thov raug, lawv muaj kev ntseeg siab dua, txuag koj cov nyiaj ntau, thiab muab rau koj lub siab tias tsis muaj lub tshuab cua sov stainless hlau tuaj yeem sib piv.

Yog tias koj xav yuav cov cua sov rau ib puag ncig corrosive, tsis txhob ntseeg cov lus dab neeg. Hloov chaw, nug cov lus nug kom raug:

Dab tsi yog qhov tseeb concentration thiab chemistry?

Lub voj voog ua haujlwm thiab qhov kub thiab txias ntawm nws ua haujlwm yog dab tsi?

Tus neeg muag khoom puas tuaj yeem muab cov ntawv pov thawj rau koj rau cov ntaub ntawv thiab kev suav ntawm watt ntom?

Raws li kev teeb tsa zoo sib xws, koj yuav kwv yees lub neej ua haujlwm ntev npaum li cas?

Yog tias koj ua li ntawd, koj yuav tsis tas hloov koj lub tshuab cua sov txhua ob peb lub hlis. Hloov chaw, koj yuav ntsuas seb lawv ua haujlwm tau zoo npaum li cas hauv lub xyoo. Nyob rau hauv ib qho kev lag luam uas txhua txhua teev ntawm downtime nqi ntau txhiab daus las, titanium cartridge rhaub tsis yog qhov kev xaiv ntse; lawv tsuas yog qhov kev xaiv uas ua rau muaj kev nkag siab los ntawm kev lag luam kev pom.