Puas yog Cov Hlau Casting haum rau cov ntoo hlawv? Qib thiab Kev Ua Haujlwm
Jan 11, 2024
Tso lus
Cam khwb cia hlau yog dab tsi thiab nws ua li cas
Cam khwb cia hlau yog tsim los ntawm melting hlau thiab pouring nws mus rau hauv lub pwm, yog li lub qhov cub nkhaus qhov rooj, ib tug articulated grate los yog ib tug - thooj flue dab tshos tuaj yeem tsim yam tsis muaj vuam. General carbon steel castings feem ntau tau teev tseg rau ASTM A27 lossis ASTM A216 qib WCB, thaum qis- cov qib alloy raug xaiv rau siab dua - kub lub zog thiab qib austenitic xws li ASTM A351 CF8 yog siv qhov kev tiv thaiv corrosion yog qhov tseem ceeb. Casting muab kev ywj pheej tsim ntau dua li cov phaj, tab sis thickness kam rau ua, shrinkage thiab sab hauv soundness yog ntau variable, yog li tsis yog -kev kuaj kev puas tsuaj feem ntau yuav tsum tau rau siab- khaws cia lossis kev nyab xeeb- qhov tseem ceeb.
Yuav Ua Li Cas Ntoo Hlawv Cub Ua Haujlwm
Lub qhov cub hluav taws kub hloov hluav taws xob hluav taws xob ntawm cov ntoo mus rau hauv qhov hluav taws xob thiab hluav taws xob. Cov huab cua tseem ceeb nkag mus rau hauv qab lossis los ntawm lub txaj roj, cov cua thib ob yog txhaj rau saum qhov hluav taws kub kom hlawv cov pa roj carbon monoxide tso tawm los ntawm cov ntoo, thiab lub chimney tswj qhov sib txawv me me uas ua rau cov pa tawm ntawm lub tsev. Lub cev, firebox, baffle, grate, qhov rooj thav duab thiab lub dab tshos flue ua rau cov cua sov-cov qauv tiv thaiv uas muaj cov txheej txheem no, thiab txhua feem pom qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias, mechanical load thiab thermal shock.
Qhov twg Cast Steel ua tau zoo
Qhov rooj, qhov rooj thav duab, hinges, tes tuav, grate, ob txhais ceg thiab baffle kev txhawb nqa yog cov khoom feem ntau tsim hauv cov hlau cam. Cov khoom no yuav tsum tuav lawv cov duab los ntawm kev rov ua cua sov mus rau 400 mus rau 600 C thiab txias rov qab rau hauv chav tsev kub yam tsis muaj kev tawg lossis deforming, thiab lawv yuav tsum tiv taus cov hmoov tshauv thiab roj uas tau ntim rau saum lawv.
| Cheebtsam | Kev pabcuam | Yog vim li cas cam khwb cia hlau yog haum |
|---|---|---|
| Qhov rooj thiab qhov rooj ncej | Cyclic radiant tshav kub, twisting load los ntawm latch | High yield zog thiab ruaj khov zoo nyob rau hauv tuab seem |
| Grate thiab roj txaj txhawb nqa | Direct nplaim taws, tshauv abrasion, thermal shock | Toughness thiab dimension stability ntawm dull liab kub |
| Baffle txhawb nqa thiab brackets | Kub flue gas txoj kev, tsis tshua muaj neeg kho tshuab load | Lub zog khaws cia ntawm qhov kub thiab txias |
| Ob txhais ceg, puag ncej thiab flue dab tshos | Compression load, qeeb oxidation | Load muaj peev xwm thiab corrosion kuj |
Thermal conductivity thiab nws qhov tshwm sim
Cov pa roj carbon steel ua cua sov ntawm kwv yees li 45 txog 50 W / (mK), qis dua aluminium ntawm li 205 W / (mK) thiab piv rau cov hlau cam khwb cia siv hauv cov qhov cub tsoos. Lub cev cam khwb cia tuab yog li sov li maj mam thiab muab cov cua sov rov qab maj mam, uas yog qhov zoo rau kev kub hnyiab thaum hmo ntuj thiab qhov tsis zoo rau chav sov sai -up. Cov neeg tsim qauv tau them nyiaj rau ob txoj hauv kev: lawv khaws cov phab ntsa kom nyias nyias raws li cov txheej txheem suav tau tso cai, thiab lawv ntxiv thaj chaw los ntawm cov tav, fins lossis lub cev pom loj dua kom tib lub tshav kub ntws mus txog chav tsev los ntawm thaj chaw ntau dua. Ntxiv rwb thaiv tsev tom qab lub firebox kuj txo qhov sib faib ntawm cov cua sov poob rau lub chimney.
Cam khwb cia hlau piv nrog cam khwb cia hlau thiab Weathering hlau
Kev xaiv cov khoom siv yog qhov sib npaug ntawm tus nqi, kev coj tus cwj pwm thermal thiab kev pabcuam lub neej es tsis yog qhov qeb duas yooj yim.
| Khoom siv | Lub zog ntawm qhov kub thiab txias | Thermal conductivity | Thermal shock resistance | Daim ntawv thov qhov cub |
|---|---|---|---|---|
| Cam khwb cia hlau, ASTM A216 WCB | Siab | Txog 45-50 W / (mK) | Zoo nyob rau hauv nyias seem | Qhov rooj, thav duab, grate, cov khoom siv |
| Cam khwb cia hlau | Nruab nrab, nkig | Txog 50 W / (mK) | Lower, nquag tawg | Kho kom zoo nkauj qhov rooj thiab daim hlau |
| Weathering hlau rau ASTM A588 | Siab | Txog 45 W / (mK) | Zoo | Sab nrauv cladding, log khw muag khoom, sab nraum zoov hluav taws lub thawv |
| Me me steel phaj | Nruab nrab, softens saum 500 C | Txog 50 W / (mK) | Zoo | Firebox shells, baffles, welded lub cev |
Casting kuj yog tus nqi nplua. Cov qauv, pwm thiab ua tiav ntxiv rau chav tsev tus nqi, thiab cov txheej txheem ua kev lag luam tsuas yog thaum lub geometry nyuaj lossis cov ntim ntau lawm txaus rau amortise tooling. Tshaj li 500 C qhov tso cai rau kev ntxhov siab ntawm carbon steel poob sai, yog li cov khoom siv tsis haum rau cov baffles los yog nplaim hluav taws mus tas li -fab cov khoom tshwj tsis yog tias tus qauv tsim ua kom cov ntu txias lossis cov kev ua haujlwm tsis zoo. Kev pabcuam lub neej nyob rau hauv lub qhov cub hauv tsev yog ib txwm tsim los ntawm oxidation ntawm qhov kub tshaj plaws es tsis yog los ntawm kev ua haujlwm tsis ua haujlwm, thiab phab ntsa tuab ntawm 2 mus rau 3 hli siab tshaj qhov ntsuas qhov tsawg kawg nkaus yog ib qho kev ceev faj tiv thaiv ntev - scaling.
Cov lus nug nquag
Q: Puas yog cam khwb cia hlau haum rau cov qhov cub kub?
Yog, rau qhov rooj sib dhos, thav duab, grate, ob txhais ceg thiab baffle txhawb nqa. Nws lub zog thiab qhov ruaj khov ntawm qhov kub thiab txias ua tau raws li qhov yuav tsum tau ua ntawm cov khoom no, txawm hais tias lub cev tuab dua tuaj yeem ua rau qeeb qeeb thiab cov txheej txheem casting nce nqi tsev.
Q: Yuav ua li cas cam khwb cia hlau txawv ntawm cam khwb cia hlau nyob rau hauv lub qhov cub?
Cam khwb cia hlau yog tougher thiab tsawg nkig, yog li nws zam thermal shock thiab mechanical cuam tshuam zoo dua li cam khwb cia hlau. cam khwb cia hlau yog yooj yim dua rau cam khwb cia hauv kev nthuav dav thiab feem ntau yog siv rau cov phaj zoo nkauj thiab cov qhov rooj tsoos.
Q: Dab tsi qib ntawm cam khwb cia hlau feem ntau teev?
ASTM A216 qib WCB yog cov pa roj carbon ntau rau cov khoom siv hauv qhov cub, nrog ASTM A27 siv rau cov txheej txheem castings thiab ASTM A351 CF8 rau corrosion-cov khoom tiv taus.
Q: Vim li cas cov thermal conductivity ntawm cam khwb cia hlau hu ua qis?
Vim nws yog piv nrog txhuas thiab tooj liab. Ntawm kwv yees li 45 mus rau 50 W / (mK) nws yog ze rau cov hlau cam, yog li cov cua sov kis tau maj mam los ntawm cov ntu tuab thiab lub cev tso tawm cov cua sov maj mam tom qab hluav taws tuag.
Q: Lub qhov cub hluav taws xob puas tuaj yeem ua tau raws li cov kev txwv tam sim no?
Kev xaiv khoom tsis txiav txim siab emissions; combustion design ua. Tsis yog- cov qhov cub catalytic tau ntawv pov thawj rau 2.0 g / h raws li US EPA 2020 Tshiab Cov Qauv Kev Ua Haujlwm Zoo, thiab European chav tso cua sov tau sim rau EN 13240.
Q: Puas yog lub qhov cub cam khwb cia hlau xav tau kev saib xyuas sib txawv?
Tsis tas yuav muaj kev kho mob tshwj xeeb. Tshawb xyuas lub qhov rooj gaskets thiab grate tuav rau scaling txhua lub caij, khaws cov tshauv kom deb ntawm qhov chaw ntub dej, thiab kov cov hlau sab nraud uas muaj qhov kub siab - txheej txheej.