Bimetal yog dab tsi thiab nws siv qhov twg?

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

Ntawm thev naus laus zis tau dhau los ua qhov zoo tshaj plaws. Raws li, manufacturers yuav tsum tau siv cov ntaub ntawv zoo tshaj plaws rau nws, feem ntau sib txawv ntawm cov khoom tshwj xeeb. Piv txwv li, txheej hlau sib xyaw tau pom dav siv niaj hnub no. Tag nrho cov ntawm lawv yog txawv los ntawm siab zog, corrosion kuj, ntev kev pab cuam lub neej. Ntxiv rau hauv tsab xov xwm, peb yuav tham txog dab tsi bimetal yog dab tsi thiab qhov twg nws siv.

Definition

Dab tsi yog bimetals? Ib qho ntawm cov khaubncaws sab nraud povtseg hauv cov ntaub ntawv zoo li no feem ntau pheej yig steel. Qhov thib ob txheej yog ua los ntawm cov khoom kim heev uas tsis yog-ferrous lossis txawm tias muaj nuj nqis hlau. Composites ntawm no ntau yam yog feem ntau yog siv thaum nws yog tsim nyog los muab cov khoom tshwj xeeb cov khoom. Tsis tas li ntawd, kev siv cov ntaub ntawv zoo li no hauv ntau qhov chaw yuav pab txuag tau ntawm txhuas, tooj liab, tooj liab, nyiaj, thiab lwm yam.

Yog li, dab tsi yog bimetal yog nkag siab. Qhov no yog ib qho kev sib xyaw, feem ntau muaj ob txheej. Cov ntaub ntawv zoo li no txawv ntawm cov khoom tshwj xeeb li niaj zaus. Ib txheej ntawm pheej yig hlau nyob rau hauv bimetals yog ib txwm hu ualub ntsiab. Ib txheej ntawm cov khoom kim yog cladding.

Ntawm nplooj ntawv piv txwv, muaj cov duab ntawm ntau hom bimetals thiab cov khoom tsim los ntawm lawv. Cov ntaub ntawv ntawm no ntau yam yog siv nyob rau hauv lub teb chaws kev khwv nyiaj txiag qhov tseeb heev dav.

yam tseem ceeb

Cov khoom sib xyaw no tuaj yeem ua rau ntau lub hom phiaj. Nyob rau tib lub sij hawm, cov txheej txheem ntawm lawv cov ntau lawm kuj txawv. Tam sim no, cov hlau sib xyaw ob txheej tuaj yeem siv rau hauv kev lag luam hauv tebchaws:

• corrosion resistant;
• tiv thaiv kev sib txhuam;
• Nkauj ntseeg vaj tswv instrumental;
• kev ua;
• thermal.

Corrosion-resistant bimetals

Cov txheej txheem tseem ceeb ntawm cov khoom no muaj cov hlau tsis tshua muaj hlau lossis cov hlau tsis muaj carbon. Lub cladding yog ua los ntawm stainless hlau. Tsis tas li ntawd, txheej no tuaj yeem yog tooj liab, npib tsib xee, txhuas. Cov hlau zoo li no yog siv los ua cov ntawv nyias thiab tuab-walled, piv txwv li, hauv kev lag luam xws li:

• roj refinery;
• tshuaj;
• food;
• shipbuilding.

Dab tsi yog kev sib txhuam bimetal

Cov khoom ntawm pab pawg no feem ntau yog siv los tsim cov kabmob dawb. Bronze los yog txhuas feem ntau yog siv los ua ib txheej cladding hauv antifriction bimetals. Cov ntaub ntawv zoo li no muaj qhov zawv zawg du. Tab sis tib lub sijhawm, lawv tsis muaj zog heev.

Yog li ntawd, cov hlau tsis muaj roj carbon tsawg yog siv los ua cov txheej txheem tseem ceeb hauv cov bimetals. Composites ntawm no ntau yam yog tsim nyob rau hauv daim ntawv ntawm tapes. Yav tom ntej, bearing shells yog tsim los ntawm cov khoom no.

Tool Bimetals

Cov khoom ntawm ntau yam no tuaj yeem siv los ua, piv txwv li, saws, riam thiab lwm yam cuab yeej txiav. Xws li bimetals yog qhov txawv, ntawm lwm yam, los ntawm kev muaj zog thiab hnav tsis kam. Lawv siv cov hlau tsis tshua muaj carbon steel ua lub hauv paus txheej. Nyob rau hauv rooj plaub no, lub cladding yog ua los ntawm hard alloys. Nws kuj yog qee zaum ua los ntawm chromium-alloyed steel.

Cov Khoom Siv Hluav Taws Xob

Bimetals ntawm pab pawg no feem ntau siv nyob rau hauv high-voltage kis kab mob nyob rau sab qaum teb cheeb tsam. Lawv lub ntsiab txheej yog ua los ntawm hlau. Lub cladding yog tsim los ntawm cov hlau nrog zoo hluav taws xob conductivity. Feem ntau nws yog tooj liab. Tsis tas li ntawd, txheej cladding ntawm cov khoom siv hluav taws xob tuaj yeem ua los ntawm txhuas.

Thermal Bimetals: Cov yam ntxwv thiab kev siv

Cov khoom ntawm hom no feem ntau yog cov strips uas tuaj yeem khoov nrog kev hloov pauv ntawm qhov kub thiab txias. Ib txheej ntawm xws li composites muaj ib tug hlau nrog ib tug siab coefficient ntawm linear expansion. Nws tuaj yeem yog, piv txwv li, qee cov alloys. Tsis tas li ntawd, cov hlau uas tsis yog-ferrous feem ntau yog siv los ua ib txheej hauv thermal composites. Cov txheej thib ob ntawm cov khoom siv no feem ntau yog ua los ntawm cov nickel-hlau alloy uas xyaum tsis muaj peev xwm nthuav dav.

Bimetals ntawm ntau yam no yog siv feem ntau rau kev tsim khoom ntawm ntau yam khoom siv. Cov no tuaj yeem yog, piv txwv li, ntsuas kub, tiv thaiv relays, ntsuas kub.

Txoj Kev Ua Haujlwm

Cov neeg tsim khoom ntawm bimetals yog, ntawm chav kawm, feem ntau ntau yam kev lag luam metallurgical. Piv txwv li, kev tsim cov khoom sib xyaw ntawm hom no hauv peb lub teb chaws yog ua los ntawm:

• JSC Magnitogorsk Hardware thiab Metallurgical Plant.
• OJSC Ural Foil.
• JSC Txhua-Lavxias Lub Tsev Haujlwm ntawm Lub Teeb Alloys, thiab lwm yam.

Txoj kev sib txawv tuaj yeem siv rau kev tsim cov bimetals. Feem ntau, cov khoom sib xyaw no yog tsim los ntawm:

• simultaneous dov;
• kos los yog nias;
• pua melts;
• kev sib koom ua ke;
• tawg cladding;
• surfacing;

Kev tshuaj xyuas txog bimetals tsim los ntawm kev lag luam niaj hnub hauv tsev, cov neeg siv khoom feem ntau tsuas yog cov khoom zoo xwb. Cov ntaub ntawv zoo li no yog qhov zoo tshaj plaws vim tias cov chaw tsim khoom ua tib zoo saib xyuas lawv cov thev naus laus zis ntawm txhua theem ntawm kev tsim khoom.

thaj chaw thov

Dab tsi yog bimetal, peb thiaj li pom. Hauv kev lag luam petrochemical, cov khoom sib xyaw no feem ntau siv los ua cov khoom siv tiv thaiv corrosion. Tsis tas li ntawd nyob rau hauv cheeb tsam no, xws li composites yog siv rau zus tau tej cov khoom nrog ib tug hardened ua hauj lwm nto.

Hauv kev lag luam nuclear, cov ntawv bimetallic raj feem ntau siv. Kuj los ntawm cov khoom sib xyaw no tau ua:

• condenser ntug dej ntawm turbine units;
• kho dej cia tank;
• muaj peev xwm rau tshuaj.

Nyob hauv kev lag luam electrochemical, cov hlau no feem ntau siv hauv electrolysis ntawm cov tshuaj chlorine rau kev lim dej. Hauv kev tsim nkoj, kev sib xyaw ntawm hom no tuaj yeem siv tau:

• hauv kev sib txuas lus engineering;
• deck superstructures;
• thaum ua cov kab nkoj sib cuag nrog dej khov thiab daus.

siv tsev

Hauv kev lag luam, bimetals yog li siv dav. Hauv lub neej txhua hnub, cov ntaub ntawv ntawm hom no, ntxiv rau ntau yam ntawm cov cuab yeej txiav, tuaj yeem siv tau, piv txwv li, hauv cov khoom siv cua sov. Tam sim no, bimetallic radiators tau dhau los ua neeg nyiam heev.

Cov roj teeb li no yog ua los ntawm ob hom hlau. Lub ntsiab txheej ntawm cov qauv no yog hlau. Lub cladding yog ua los ntawm aluminium. Qhov zoo ntawm hom radiators muaj xws li, ua ntej ntawm tag nrho cov, lub neej ntev kev pab cuam, lub zog thiab kev ntseeg tau. Lub ntsiabQhov zoo ntawm cov roj teeb zoo li no yog tias lawv tuaj yeem siv tau rau hauv cov tes hauj lwm nrog lub siab txaus hauv lub hauv paus thiab lub coolant tsis zoo heev.

Cov txheej txhuas hauv bimetallic radiators nyob rau sab nraud. Cov khoom no muaj qhov siab ntawm thermal conductivity thiab tuaj yeem ua kom sov hauv lub sijhawm luv tshaj plaws. Tsis tas li ntawd, aluminium zoo li niaj hnub thiab ntxim nyiam. Bimetal radiators feem ntau haum rau sab hauv ntawm tsev thiab chav tsev.

Cov txheej txheem tseem ceeb ntawm cov khoom sib xyaw siv los ua cov roj teeb no feem ntau muaj cov hlau tiv thaiv corrosion. Cov khoom no yog ruaj thiab tsis xeb vim muaj huab cua thiab ntau yam impurities nyob rau hauv lub coolant.

Radiators ntawm hom "tag nrho bimetal" tshwj xeeb tshaj yog nrov nrog cov tswv cuab. Rau cov roj teeb ntawm hom no, kev sau npe sab hauv yog qhov tseem ceeb. Ntawd yog, nws yog welded steel qauv ntawm cov neeg sau thiab cov kab ntsug.