Thermite welding: technology. Kev xyaum ntawm thermite vuam nyob rau hauv lub neej txhua hnub thiab hauv kev lag luam hluav taws xob

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Kev tsim khoom ntawm kev ua haujlwm vuam, tsis hais txog kev siv tshuab, yog cuam tshuam nrog kev xav tau rau lub koom haum teeb meem ntawm kev ua haujlwm. Tus tswv yuav tsum npaj cov khoom siv, khoom siv, thiab saib xyuas kev nyab xeeb. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum coj mus rau hauv tus account tus nqi ntawm qhov kev tshwm sim, txij li kev txhawb nqa nyiaj txiag ntawm kev ua haujlwm tsis tu ncua tsis tas yuav ua rau qhov zoo ntawm cov txiaj ntsig tau txais. Hauv qhov no, ib qho txiaj ntsig zoo tshaj plaws yog thermite vuam, uas yooj yim rau kev ua, muaj cov ntaub ntawv thiab, qee zaum, tso cai rau koj ua tiav cov pob qij txha muaj zog.

Technology nta

Thermite welding txheej txheem yog tus cwj pwm los ntawm kev siv cov hmoov sib tov tshwj xeeb, uas tso tawm ntau cov cua sov thaum lub sij hawm combustion. Raws li txoj cai, cov no yog cov hlau sib tov, uas yog hu ua thermites. Kev sib xyaw ib txwm muaj xws li kev siv ob lub ntsiab lus - qhov hluav taws kub kub thiab qhov sib xyaw los ntawm cov cua sov tawm. Hlau nplai ua raws li oxide, thiab thermite muaj magnesium nrog txhuas yog lub ntsiab activator. Tsis tas li ntawd, technologyThermite welding tso cai rau siv cov oxides ntawm chromium, tungsten thiab npib tsib xee. Ua tsaug rau cov hmoov no, qhov nce hauv thermal cuam tshuam tau tiav. Yog li, yog tias sib xyaw ntawm txhuas thiab magnesium muab cua sov ntawm qhov kev txiav txim ntawm 2500 ° C, ces chrome tebchaw nce qhov kub ntawm 3500 ° C. Cov sib tov rau lub fuse kuj txawv. Feem ntau cov qauv tsim rau txoj haujlwm no yog kev sib xyaw ntawm magnesium, sodium, thiab barium peroxide. Lub peculiarities ntawm burning thermite muaj xws li kev saib xyuas ntawm active tshav kub tso tawm txawm nyob rau hauv kev sib cuag nrog dej. Hauv lwm lo lus, qhov sib tov yuav luag tsis tuaj yeem tua los ntawm kev raug xwm txheej.

Ntau yam ntawm thermite welding

Muaj plaub lub tswv yim tseem ceeb rau kev ua cov vuam zoo li no - los ntawm nruab nrab casting, ua ke, taub qab thiab duplex. Thaum lub sijhawm ua haujlwm ntawm qhov nruab nrab casting, cov hmoov sib tov dhau mus rau hauv lub xeev ntawm cov kua hlau, thiab qhov no tsis cuam tshuam rau thawj tus yam ntxwv ntawm cov khoom siv thermite. Feem ntau, cov txheej txheem no yog siv rau kev teeb tsa ntawm cov qauv hlau uas tau txuas ua ntej rau hauv txoj haujlwm xav tau. Tshwj xeeb tshaj yog rau kev ua hauj lwm nrog cov khoom lamellar, cathode thiab cov qhov hluav taws xob tso dej, pob tw thermite welding yog siv, cov sib tov uas yog pre-hluav taws xob nyob rau hauv lub cub tawg. Cov txheej txheem ua ke muaj kev sib xyaw ua ke ntawm txoj kev txhaj tshuaj thiab pob tw vuam. Ntawd yog, tus tswv tuaj yeem ua txoj haujlwm tseem ceeb uas siv cov kua welding, thiab kho cov npoo uas siv cov pob tw vuam. Raws li rau duplex, txoj kev nomuab rau kev taw qhia ntawm ib theem ntxiv, thaum lub sij hawm uas lub melted sib txawv ntawm cov qauv yog nias.

Khoom siv siv

Lub hauv paus ntawm cov khoom siv yog lub crucible, uas muaj peev xwm ua haujlwm nrog cov kab tsuag, suav nrog cov dej ntws thiab cov hlau molten. Cov khoom no tuaj yeem ua los ntawm ceramic lossis tungsten, nyob ntawm qhov yuav tsum tau ua rau qhov kub thiab txias. Casting pwm yog npaj nyias. Cov matrices tshwj xeeb tso cai rau koj ua haujlwm nrog ntau yam ntawm molten puag. Koj yuav tsum tau npaj cov cuab yeej rau thermite welding nyob rau hauv daim ntawv ntawm clamping thiab kho cov cuab yeej rau cov qauv loj, ib tug tshwj xeeb cutter thiab ib tug txawj mem hluav tsim tshwj xeeb rau hom kev ua haujlwm no. Lub teeb hluav taws xob tshwj xeeb thiab lub ntsuas kub yuav tsum tau nyob ntawm qhov ua haujlwm thiab cov txiaj ntsig xav tau.

Kev xyaum ua haujlwm hauv tsev

Hauv tsev, hom vuam no txuag cov neeg uas tsis tuaj yeem siv txoj kev siv hluav taws xob zoo lossis fusion gas txuas. Feem ntau, nyob rau hauv xws li mob, thermite yog siv nrog qhov tsawg kawg nkaus kub ntawm txog 1300 ° C. Hom no tso cai rau koj los muab cov txheej txheem aluminium yooj yim tshaj plaws, vim tias koj tuaj yeem kho cov kab nrib pleb me me hauv cov qauv hlau, ua haujlwm hauv tsheb los yog vuam lub tsev. Feem ntau, thermite weldingnyob rau hauv tsev yog ua tsis muaj tshwj xeeb inverters. Thermite mem hluav yuav ua raws li cov cuab yeej ua haujlwm, nrog kev ua haujlwm zoo uas koj tuaj yeem ua tiav kev sib txuas zoo.

Kev Ua Haujlwm Kev Lag Luam

Lub koom haum kev lag luam ntawm cov txheej txheem vuam siv cov thermite sib xyaw muaj ntau qhov sib txawv. Ua ntej ntawm tag nrho cov, ntau npaum hlau compositions nrog nce tshav kub tso yog siv. Cov no yog tib lub thermite nrog kev suav nrog chromium, tungsten thiab lwm yam khoom siv nrog kev ua haujlwm combustion. Rau lub koom haum kev lag luam ntawm cov txheej txheem, nws tseem yuav tsum tau siv cov cuab yeej muaj zog dua, uas yog, cov kws tshaj lij tsis txwv rau ib qho thermite mem hluav. Piv txwv li, thermite welding nyob rau hauv kev lag luam hluav taws xob yuav tsum tau siv cov inverters, thermostats thiab lwm yam khoom siv uas tso cai rau koj mus taug qab qhov tsis ua haujlwm ntawm cov txheej txheem ua haujlwm. Qhov thib peb txawv feature ntawm vuam nyob rau hauv industrial sectors yog kev npaj cov khoom tshwj xeeb tuav. Siv cov pwm refractory los sau qhov khoob, muaj zog crucibles, tuav thiab fixtures rau ntau yam designs.

Txoj kev xaim vuam

Thermite vuam tshuab yog qhov zoo rau kev ua haujlwm nrog cov xaim hluav taws xob. Ntxiv mus, txoj kev no tuaj yeem siv tau ob qho tib si hauv kev lag luam thiab hauv lub neej txhua hnub. Nyob rau hauv tus txheej txheem ntawm kev ua hauj lwm, ib tug tag nrho-hlau kev twb kev txuas ntawm cov hlau xaus yog tsim. Nws yog ib qho tseem ceeb kom nco ntsoov tias nyob rau hauv qhov chaw ntawm thickeningnyob ntawm qhov chaw vuam, qhov hluav taws xob tsis kam txo qis rau cov khoom seem. Rau vuam nws tus kheej, tshwj xeeb thermite cartridge yog siv. Tshwj xeeb, nws yog siv rau thermite welding ntawm cov xov hlau ua los ntawm txhuas thiab steel-aluminium. Kuj tseem muaj cov cartridges tshwj xeeb rau kev ua haujlwm nrog tooj liab thaiv - lawv yog ua los ntawm pwm.

Vuam Kev Nyab Xeeb

Nrog txhua qhov yooj yim ntawm txoj kev vuam no, nws yog qhov tseeb vim yog cov khoom siv tshwj xeeb ntawm cov thermite sib tov uas tau txiav txim siab txog kev nyab xeeb nruj heev. Ua ntej, muaj cov kev cai tshwj xeeb rau kev khaws cov hmoov hlau. Nws yuav tsum tau muab cia rau hauv chav qhuav thiab cua sov xwb. Ntxiv mus, thermite welding tsis tso cai siv cov hmoov ntub dej ncaj qha rau hauv cov txheej txheem ignition. Qhov thib ob, muaj cov kev cai tshwj xeeb rau cov xwm txheej ntawm vuam. Kev ua haujlwm tsuas yog ua tau ntawm qhov kub siab tshaj 10 ° C. Kev sib txuas yuav tsum tau ntxuav ua ntej thiab degreased.

Pros and cons of thermite welding

Qhov zoo muaj xws li muaj cov ntaub ntawv, qhov yooj yim ntawm kev ua haujlwm feem ntau thiab siv hluav taws xob tsawg thaum ua haujlwm. Nyob rau hauv lwm yam lus, qhov kev xaiv no yog tsim rau loj-scale vuam ntawm lub tsev loj, thiab rau me me kev ua hauj lwm hauv tsev. Raws li qhov tsis zoo, thermite welding coj ntau yam teeb meem hauv kev ua haujlwm nrog seamless pob qij txha. Ib lub lag luamnyob rau hauv qhov ncaj qha thaum lub sijhawm ua haujlwm, tus tswv tsis tuaj yeem saib xyuas qhov zoo ntawm qhov tsim ntawm qhov sib txawv thiab kev sib txuas. Raws li qhov tshwm sim, feem ntau nws tsis tas yuav suav nrog kev txo qis thiab huv ntawm qhov chaw ntawm cov qauv yam tsis muaj qhov tseem ceeb deformations. Tab sis nyob rau hauv cov nqe lus ntawm lub zog thiab durability, thermite tebchaw yog suav hais tias yog ib qho zoo tshaj plaws.

Zaj lus

Cov neeg tsim khoom ntawm cov khoom siv vuam feem ntau txhim kho cov cuab yeej txiav, muab kev ua haujlwm siab rau cov cuab yeej thermal. Qhov no mus kom ze rau txoj kev loj hlob ntawm cov cuab yeej justifies nws tus kheej, tab sis kev ua hauj lwm ntawm cov cuab yeej muaj zog muaj zog lawm yuav tsum tau loj kev nqis peev nyob rau hauv lub zog mov. Raws li kev xyaum ntawm thermite welding nyob rau hauv lub neej txhua hnub qhia tau hais tias, kev siv hlau hmoov sib tov raws li txhuas thiab magnesium nyob rau hauv cov nqe lus ntawm txiav quab yuam muab cov nyhuv tib yam li lwm txoj kev. Lwm qhov yog tias kev saib xyuas ntawm cov khoom sib tov tib yam kuj yuav tsum muaj teeb meem ntau thiab siv nyiaj. Tab sis cov inconveniences yog compensated los ntawm versatility ntawm lub tshuab. Lub xub ntiag nyob rau hauv kev lag luam ntawm ntau yam ntawm cov hmoov hlau hlau los ntawm txhuas mus rau tungsten yuav tso cai rau koj los tsim ntau yam kev sib xyaw tsim nyog rau kev koom nrog kev tsheb ciav hlau pw tsaug zog thiab ua haujlwm zoo nrog cov xov hlau.