Tungsten-rhenium Alloy Thaum tshav kub kub dab dej

Product Description

Tungsten Rhenium alloy

Ib qho kev daws teeb meem ntxiv dag zog rau alloy muaj li ntawm tungsten keeb thiab rhenium keeb.

Tungsten-rhenium alloy yog ib qho kev daws teeb meem muaj zog alloy uas muaj tungsten caij thiab rhenium caij. Feem ntau siv rhenium cov ntsiab lus (qhov loj feem, feem pua ​​) nyob rau hauv cov alloy yog 3, 5, 10, 25 thiab 26. Muab faib ua cov ntsiab lus tsis tshua muaj W-Re alloy (Re Less dua lossis sib npaug li 5 feem pua) thiab cov ntsiab lus siab W-Re alloy ( Re Loj dua lossis sib npaug li 15 feem pua).

Daim duab 1

Tungsten-rhenium alloy yog ib qho kev daws teeb meem muaj zog alloy uas muaj tungsten caij thiab rhenium caij. Feem ntau siv rhenium cov ntsiab lus (qhov loj feem, feem pua ​​) nyob rau hauv cov alloy yog 3, 5, 10, 25 thiab 26. Muab faib ua cov ntsiab lus tsis tshua muaj W-Re alloy (Re Less dua lossis sib npaug li 5 feem pua) thiab cov ntsiab lus siab W-Re alloy ( Re Loj dua lossis sib npaug li 15 feem pua). Thaum cov ntsiab lus Re hauv cov alloy tshaj 26 feem pua, W-Re alloy yuav precipitate brittle σ theem.

Raws li txoj kev npaj, ntxiv dag zog rau txoj kev thiab xaiv tungsten-raws li raw cov ntaub ntawv, kev faib tawm ntawm tungsten-rhenium alloys yog qhia nyob rau hauv daim duab 1.

Cov ntaub ntawv tseem ceeb ntawm tungsten-rhenium alloy yog hlau thiab ntawv. Silk account rau feem coob. Feem ntau yog siv los ua cov khoom siv hluav taws xob kub.

Tungsten-rhenium alloy muaj cov khoom siv zoo dua qub thiab kev ua kom zoo dua li cov ntshiab tungsten, thiab muaj kev tiv thaiv siab, yog li nws muaj kev ua tau zoo dua thiab kev sib txuas. Tungsten-rhenium alloy uas muaj 3 feem pua ​​​​rhenium tuaj yeem siv los ua cov hlau tseem ceeb ntawm electron tube filament, daim phiaj hlau thiab cov cua kub ncaj qha cathode. Tungsten-rhenium alloy muaj thorium, uas yog, thoriated tungsten-rhenium alloy, yog siv los ua cov cua kub ncaj qha cathode ntawm lub raj xa tawm loj, thiab nws qhov kev ua tau zoo dua li ntawm thoriated tungsten cathode, thiab nws tsis yooj yim rau deform. ntawm qhov kub thiab txias. tus

Tungsten-rhenium alloy seem feem ntau yog tungsten-rhenium alloy, thiab tseem suav nrog molybdenum-rhenium alloy. Cov txheej txheem rau rov qab rhenium los ntawm pov tseg tungsten-rhenium alloy muaj xws li oxidative biogenesis method thiab saltpeter melting decomposition-ion exchange method.

Txheej txheem ntau lawm

Daim duab 2

Muaj ob txoj hauv kev tsim cov tungsten-rhenium alloy: hmoov metallurgy thiab smelting. Cov txheej txheem ntau lawm yog pom nyob rau hauv daim duab 2. Nyob rau hauv tiag tiag ntau lawm, cov hmoov metallurgy txoj kev dominates. Isostatic nias thiab nruab nrab zaus induction cua sov sintering tuaj yeem tau txais cov khoom zoo zoo alloy nrog qhov zoo tshaj plaws uniformity thiab sib xws.

Kev npaj ntawm tungsten Rhenium hmoov

Daim duab 3

Cov txheej txheem ntawm kev npaj tungsten-rhenium pre-alloyed hmoov yog tus yuam sij rau qhov sib xws ntawm alloy muaj pes tsawg leeg. Kev sib piv ntawm ntau txoj kev ua ntej-alloyed yog qhia hauv daim duab 3.

Kev npaj Billet

Lub alloy compact tuaj yeem tsim los ntawm steel pwm tsim los yog txias isostatic nias, thiab lub compact yog sintered rau hauv ib tug ntom ingot nrog ib tug txheeb ze ntom ntawm 85 feem pua ​​​​rau 95 feem pua ​​​​hauv hydrogen-dhau ntsug melting rauv, hydrogen-dhau nruab nrab zaus rauv. los yog hydrogen-dhau tsis kam rauv. Tseem muaj cov ingots ua los ntawm kub isostatic nias.

Kev ua haujlwm

Daim duab 4

Sintered ingots yog tsim rau ntau hom kev ua tiav, xws li cov pas nrig, xov hlau, daim hlau, ntawv ci thiab strips, los ntawm ntau txoj kev ua haujlwm (swivel forging, dov, kos duab, thiab lwm yam). Cov muaj pes tsawg leeg ntawm tungsten-rhenium alloy nrog kev ua haujlwm zoo yog W-(18 ~ 26) Re. Qhov zoo tshaj plaws forging kub rau alloy ua yog 1500 degree thiab annealing kub yog 1600 ~ 1800 degree. Rau cov alloys nrog Re ntsiab lus> 26 feem pua, cov ntsiab lus tso cai sigma theem yog txwv. Txawm hais tias nag lossis daus ntawm theem ob no ua rau cov khoom siv dag zog, nws cov txheej txheem tseem zoo heev. Alloys nrog Re ntsiab lus<18% can be processed smoothly, but require a higher initial processing temperature.

Hlau yog cov khoom tseem ceeb ntawm w-Re alloy. Cov qib ntawm tungsten-rhenium hlau nyob rau hauv kuv lub teb chaws raug cais raws li cov khoom sib txawv, thiab cov tshuaj muaj pes tsawg leeg yog qhia hauv daim duab 4.

Daim duab 5

Txoj kev sib xyaw ua kom muaj zog yog ib txoj hauv kev zoo los txhim kho cov khoom siv hluav taws xob kub ntawm W-Re alloys. Ntxiv Hfc hais los yog ntxiv ThO2 hais rau cov hlau yog feem ntau txoj kev sib xyaw ua ke, thiab cov txheej txheem alloy npaj muaj xws li W-He-Hf-C system thiab W-He-ThO₂qhov system. Lub particle tis nyob rau hauv lub alloy hloov tsis tu ncua nrog cov txheej txheem ua. Daim duab 6 atlas (a) qhia qhov microstructure ntawm Hfc particle faib hloov pauv hauv W-24.5Re-2Hfc alloy pas nrig. Tom qab kub isostatic nias (qhib ∅ 41mm), tus txheeb ze ntom ntom ntawm cov alloy ncav cuag 99 feem pua, thiab cov khoom nyob rau hauv cov qauv compact yog faib nyob rau hauv grain ciam teb thiab nplej (raws li qhia nyob rau hauv daim duab 6 (a)), thiab nyob rau hauv lub tom ntej no kub. Cov txheej txheem swaging Nyob rau hauv Hfc, thaum lub deformation tus nqi nce mus txog 62 feem pua, lub σ theem tshwm nyob rau hauv cov qauv, thiab cov Hfc hais tsom mus rau lub grain ciam (Daim duab 6, atlas (b)). Kev txhim kho ntawm qhov kub-kub txhua yam khoom ntawm cov hlau yog qhia hauv daim duab 6 (c). Daim duab 6 Atlas (d) thiab (e) yog qhov sib piv ntawm microstructure ntawm W-Re alloy, W-Re-ThO₂ alloy thiab W-Re-Hfc alloy tom qab 2500K annealing. Nws tuaj yeem pom tau tias txawv Cov morphology nthuav tawm los ntawm kev ntxiv cov khoom tsis zoo ib yam.

Kev ua tau zoo

Tungsten-rhenium alloy muaj cov khoom zoo heev, xws li cov ntsiab lus melting siab, siab zog, siab hardness, siab plasticity, siab recrystallization kub, siab resistivity, siab thermal muaj peev xwm tus nqi, tsis tshua muaj vapor siab, tsis tshua muaj hluav taws xob ua hauj lwm muaj nuj nqi thiab tsis tshua muaj extension Brittle. hloov kub. Cov khoom ntawm tungsten-rhenium alloys raug pom nyob rau hauv daim duab 7 (a) ntawm sab xis. Nws tuaj yeem pom los ntawm daim duab zoo ntawm daim duab 7 tias qhov ntsuas kub ntawm cov doped rhenium yog siab dua li ntawm cov ntshiab tungsten rhenium.

Daim duab 7

Qhov kub-kub tensile zog ntawm ob peb tungsten-rhenium alloys muaj nyob rau hauv daim duab 7 (b) ntawm sab xis. Nws tuaj yeem pom los ntawm daim duab 7 tias cov khoom tensile ntawm cov alloys no ntau dua li cov ntshiab tungsten nyob ib ncig ntawm 1500 degree. Piv txwv ntawm kev ntxiv Hfc los txhim kho qhov kub-kub txhua yam khoom ntawm tungsten-rhenium alloy yog pom nyob rau hauv daim duab 7 (c) ntawm lub microstructure seem saum toj no.

Daim ntawv thov

Ob leeg tungsten thiab rhenium yog cov hlau refractory uas tau siv dav hauv cov ntawv thov kub. Tab sis lawv kuj muaj qhov tsis zoo, tungsten ntshiab yog nkig, thiab qhov kub ntawm recrystallization tsawg heev; ntshiab rhenium muaj kev ua haujlwm tsis zoo thiab kim. Yog li hais tias lawv ntau yam ntawm daim ntawv thov yog heev txwv. tungsten thiab rhenium yog tsim rau hauv tungsten-rhenium alloys nrog ntau yam khoom. Cov alloys kov yeej qhov tsis txaus ntawm cov ntshiab tungsten thiab ntshiab rhenium, thiab muaj ntau yam zoo heev, xws li cov ntsiab lus melting siab, siab zog, siab hardness, siab plasticity, siab resistivity, thiab siab recrystallization kub, siab thermal muaj peev xwm tus nqi, tsawg vapor siab, Tsis tshua muaj hluav taws xob ua haujlwm muaj nuj nqi thiab tsis tshua muaj kev hloov pauv ntawm cov yas-nkig, thiab lwm yam, tib lub sijhawm, lawv kuj muaj kev ua haujlwm zoo rau "dej voj voog" cov tshuaj tiv thaiv kev ua haujlwm, thiab tus nqi yog 75 ~ qis dua rhenium 95 feem pua.

Yog li ntawd, tungsten-rhenium alloys tau dav siv hauv tshuab hluav taws xob, thermal tswj, niaj hnub nuclear technology thiab aerospace technology, ntsuas kub, ntsuas, khoom siv hluav taws xob thiab lwm yam kev tshawb fawb thiab thev naus laus zis. Tshwj xeeb, tungsten-rhenium alloy hlau yog txuam rau hauv ib lub thermocouple, uas muaj cov thermoelectric siab thiab rhiab heev, thiab muaj ntau yam kev ntsuas kub, teb ceev ceev, thiab zoo corrosion kuj. Nws yog cov khoom siv thermal sensing zoo hauv kev ntsuas kub. Txij li thaum tungsten-rhenium thermocouples hloov platinum-rhodium thermocouples yog qhov sib txawv.

• Daim ntawv thov hauv tshuab nqus tsev hluav taws xob

Lub ntsiab kev ua tau zoo rau cov raj electron, kinescopes thiab noob filaments yog:

① Zoo ductility ntawm qis kub (uas yog, zoo formability ntawm ib zaug xaim winding). Cov txheej txheem txheej txheem yog qhov txhab, folded los yog twisted rau hauv filaments ntawm ntau yam duab thiab ntau thiab tsawg, uas yuav tsum muaj zoo rwb thaiv tsev ntawm ib leeg, tsis tshua muaj yas-nkig hloov kub, zoo uniformity thiab sib xws;

② Tsawg-kub annealing muaj ductility zoo (uas yog, zoo thib ob winding formability). Cov filament qhov chaw tom qab thawj winding yuav tsum tau annealed los txhim kho cov duab thiab qhov loj ntawm qhov chaw. Feem ntau, annealing yog nqa tawm nyob rau hauv qhov kub thiab txias ntawm thawj recrystallization ntawm cov hlau. Tsuas yog cov xov hlau uas muaj qhov kub thiab txias tsis zoo annealing ductility tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm kev sib tw thib ob (ob chav helix filament) los yog ntau yam winding thiab folding;

⑧ Zoo kub ductility (uas yog, ductility tom qab recrystallization theem nrab). Thaum lub sij hawm tshem tawm cov tub ntxhais hlau, thauj, thiab txhim kho lub raj, nws yuav tsum raug kev co thiab kev cuam tshuam, thiab cov filament uas tsis zoo ductility yuav raug puas tsuaj. Cov filament tiav yuav tsum tau siv rau ntawm qhov kub thiab txias, thiab cov filament yuav tsum tau khaws cia rau hauv qhov xav tau zoo thaum siv;

④ Kub kub los tiv thaiv sagging yog qhov zoo. Txij li feem ntau ntawm cov filament muaj nyob rau hauv ib tug kauv zoo, lub filament yog ntev dua thiab muaj ib tug tej yam zoo. Txhawm rau kom lub suab tsis hloov thaum siv, qhov kub siab sag kuj yog qhov tseem ceeb.

• Siv los ua khoom siv hluav taws xob

Ntau cov ntaub ntawv tiv tauj feem ntau yog siv rau hauv cov hluav taws xob hloov hluav taws xob, xws li lub tsheb sib tiv tauj thiab hluav taws xob tiv tauj, kev tiv thaiv hluav taws xob, kev sib cuag hauv xov tooj, ntau yam hluav taws xob hloov kev sib cuag, thiab lwm yam. Thaum ua hauj lwm, txhua khub ntawm kev sib cuag muaj cov yam ntxwv ntawm kev sib txhuam, qhov hluav taws xob corrosion thiab kev sib cuag siab. Yog li ntawd, cov ntaub ntawv tiv tauj yuav tsum ua kom tau raws li cov hauv qab no: ①Cov kev tiv thaiv kev tiv thaiv ntawm cov khoom siv me me, ②Volt-ampere yam ntxwv ntawm lub arc yog me me, ⑧ Lub dip Erosion tus nqi me me.

Cov hlau uas tuaj yeem siv los ua cov ntaub ntawv sib cuag yog: tooj liab, nyiaj, platinum, rhodium, iridium, tungsten, molybdenum, rhenium, tungsten-tooj ​​liab alloy, tungsten-silver alloy, tungsten-chinal alloy thiab siab tshwj xeeb gravity alloy. Tungsten, molybdenum, rhenium thiab lawv cov alloys tau siv dav hauv kev sib txuas ntawm lub tsheb thiab kev sib cuag hluav taws xob. Kev siv cov tungsten-rhenium alloy ua cov khoom sib cuag tseem yog cov khoom tsim nyob rau xyoo tas los no. Nws tuaj yeem muab piv nrog platinum, iridium, rhodium thiab lwm yam hlau muaj nuj nqis.

• Siv los ua cov khoom siv thermocouple

Tungsten-rhenium alloy hlau ntawm ntau yam sib xyaw tuaj yeem ua khub rau hauv tungsten-rhenium thermocouples. Tungsten-rhenium thermocouples dav siv hauv kev lag luam muaj xws li: W/W-26Re doped, W-3Re/W-25Re, W-5Re/W{{7 }}Re thiab W-5Re/W-26Re thiab lwm yam tungsten-rhenium thermocouples . Lawv muaj cov khoom siv hluav taws xob muaj peev xwm siab thiab muaj kev nkag siab zoo, qhov kub thiab txias kev sib raug zoo yog qhov zoo linearity, siab ntsuas kub (txog 2800 degree), siab precision (qhov sib txawv ntawm qhov tso cai yog ±{{ 17}}.25% t, ± 0.5% t thiab ± 0.5% t thiab ± 1% t thiab lwm yam peb).

Tungsten-rhenium thermocouples feem ntau yog siv rau kev ntsuas kub hauv lub tshuab nqus tsev, txo qhov cua thiab inert cua rau ntsuas kub thiab kub qhov chaw. Noj qee qhov tshwj xeeb los tiv thaiv oxidation ntsuas hauv qhov chaw oxidizing tuaj yeem hloov pauv platinum-rhodium thermocouple rau ntsuas kub. Tus nqi ntawm tungsten-rhenium thermocouple yog 12 txog 18 npaug qis dua li ntawm ib qho platinum-germanium thermocouple. Qhov ntsuas kub ntawm tungsten-rhenium thermocouple es tsis txhob platinum-rhodium thermocouple muaj cov txiaj ntsig zoo ntawm kev lag luam, thiab nws tau them nyiaj ntau dua los ntawm tib neeg.

• Lwm daim ntawv thov

(1) Cov khoom siv hluav taws xob kub

Tungsten-rhenium alloys siv nyob rau hauv aerospace tsheb muaj xws li: tshav kub shields, peripheral qhov chaw ntawm foob pob ua ntxaij nozzles, cone qhov chaw, coatings rau cov cav los yog cav qhov chaw. Tungsten-rhenium alloy ntim thiab cov ntaub ntawv crucible rhuab mus rau 2000 degree yam tsis muaj tshuaj tiv thaiv rau refining uranium. Tungsten-rhenium alloys yog siv rau cov khoom cua sov thiab cov ntaub thaiv cua sov ntawm cov cua kub kub, crucibles rau evaporating high-purity hlau, thiab springs, screws, ceev, txhawb rods thiab txuas rods nyob rau hauv high-temperature teb, uas muaj zoo plasticity.

(2) Cov ntaub ntawv hnav-resistant

Vim tias tungsten-rhenium alloy muaj siab hardness, siab zog, hnav tsis kam thiab corrosion kuj, nws tuaj yeem siv los ua cov koob luam ntawv ntawm cov tshuab luam ntawv, thiab nws lub neej ntev tuaj yeem ncav cuag 100 lab lub sijhawm. Tsis tas li ntawd, nws tseem tuaj yeem ua cov nibs, nruab nrab ntawm lub ntiajteb txawj nqus hammers thiab hnav-tiv taus qhov chaw ntawm kev soj ntsuam thiab daim ntawv qhia cov cuab yeej.

(3) Cov khoom siv hluav taws xob

Tungsten-rhenium alloy rods uas muaj thorium oxide, zirconia thiab cerium oxide dispersed hais yog siv rau electrodes ntawm argon arc vuam tshuab thiab tsis siv hluav taws xob arc rauv melting electrodes. Nws yog resistant rau kub thiab ablation, thiab muaj ib tug ntev kev pab cuam lub neej.

Hlau Txhaj Moulding txheej txheem

Detection Systems