Hauv kev ua haujlwm ntawm cov khoom siv hluav taws xob niaj hnub no thiab kev tsim khoom siab - kawg, kev sib cuag hluav taws xob ua haujlwm tseem ceeb rau kev tsim thiab rhuav tshem; lawv qhov kev ua tau zoo ncaj qha txiav txim siab txog kev ntseeg siab thiab kev pabcuam lub neej ntawm tag nrho cov cuab yeej. Ntawm cov array loj ntawm cov ntaub ntawv tiv tauj muaj, tungsten -raws li kev sib cuag nyob rau hauv ib qho tseem ceeb txoj hauj lwm vim lawv tshwj xeeb physicochemical zog. Tshwj xeeb tshaj yog, Tungsten-Copper (WCu) thiab tungsten-Silver (WAg) cov neeg sib cuag tau raug lees paub tias yog tus archetypal Tungsten Contact Rivets. Txij li thaum ob qho tib si siv refractory tungsten raws li lawv lub hauv paus matrix, lawv muaj cov qib siab ntawm qhov zoo sib xws ntawm cov yam ntxwv ntawm lub cev, cov txheej txheem tsim khoom, thiab daim ntawv thov scenarios. Txawm li cas los xij, thaum txiav txim siab cov nqi raw khoom-muab tias tus nqi ntawm cov nyiaj yog siab dua li cov tooj liab -tungsten- tooj liab hu muaj qhov sib tw nqi kom zoo dua. Qhov no tso cai rau lawv kom muaj kev ua tau zoo tshaj plaws thaum tseem tshuav nyiaj txiag ntau dua, ua rau lawv nyiam xaiv rau ntau yam khoom siv hluav taws xob.
Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm tungsten- cov khoom siv tooj liab yog nws cov nyhuv "hws-txias". Thaum qhov kev khiav hauj lwm kub surges sai heev mus rau ntau tshaj 3000 degree, cov tooj liab embedded nyob rau hauv lub nruam matrix ntawm cov khoom tungsten hu rivet undergoes liquefaction thiab sai evaporation. Qhov kev hloov ntawm lub cev no absorbs thiab dissipates ib tug ntau npaum li cas ntawm thermal zog, yog li zoo txo qhov kub ntawm qhov chaw tiv tauj thiab tiv thaiv kev sib cuag los ntawm softening los yog ua tsis tau tejyam vim overheating. Qhov no nws tus kheej -txias tshuab ua kom cov kev sib cuag no ua tau zoo tshwj xeeb hauv cov khoom siv uas raug luv luv - Circuit Court tam sim no surges- xws li siab -voltage circuit breakers thiab ultra-high-pressure switches. Tsis tas li ntawd, kev ua tau zoo ntawm tungsten- tooj liab hu tuaj yeem hloov kho tau los ntawm kev kho cov ntsiab lus tooj liab; Feem ntau, ua kom cov tooj liab feem ntau txhim kho cov khoom siv hluav taws xob conductivity thiab ductility, yog li txaus siab rau ntau hom kev ua haujlwm ntawm hluav taws xob.
Hais txog cov txheej txheem tsim khoom, kev tsim cov tungsten hauv kev lag luam-raws li kev sib cuag yog nyob ntawm cov txheej txheem hmoov metallurgy. Cov txheej txheem muaj xws li infiltration, tooj liab oxide hmoov txoj kev, thiab txhaj tshuaj molding. Txoj kev infiltration yog ib qho ntawm cov txheej txheem siv dav tshaj plaws: siab -purity tungsten hmoov yog thawj zaug compacted rau hauv ib qho preform ntawm qhov xav tau; no preform undergoes siab -kub sintering los tsim ib tug ntxeem tau tungsten skeleton nrog ib tug tshwj xeeb porosity; Thaum kawg, molten tooj liab yog infiltrated mus rau hauv lub pores ntawm lub cev pob txha kom tawm los ib tug ntom, composite tungsten- khoom siv tooj liab. Txoj kev no yog qhov tshwj xeeb zoo- haum rau kev tsim cov tungsten- cov khoom siv tooj liab nrog cov ntsiab lus tooj liab tsawg, vim nws ua kom muaj kev ncaj ncees ntawm cov pob txha tungsten thiab tag nrho lub zog ntawm cov khoom.
Cov txheej txheem tooj liab oxide hmoov yog txheej txheem uas cov tooj liab matrix tsim nyob rau hauv situ los ntawm cov tshuaj tiv thaiv. Cov txheej txheem no pib los ntawm kev txo cov tooj liab oxide hmoov rau hauv cov hmoov hlau tooj liab; Qhov no yog ces uniformly tov nrog tungsten hmoov thiab raug rau kev kho mob sintering. Thaum lub sij hawm sintering, tooj liab tsim ib tug nruam matrix qauv, thaum lub tungsten hais yog uniformly dispersed thoob plaws hauv nws, ua hauj lwm raws li ib tug reinforcing moj khaum. Txoj kev no tso cai rau kev tswj xyuas meej ntawm cov khoom siv microstructure, txhawb kev sib zog sib zog ntawm cov tooj liab thiab tungsten theem, yog li ntxiv dag zog rau cov khoom siv cov khoom siv txhua yam nrog rau nws cov hluav taws xob thiab thermal conductivity.
Txoj kev txhaj tshuaj molding (tseem hu ua kev txhaj tshuaj molding) tshwj xeeb tshaj yog tsim rau kev tsim cov hluav taws xob me me uas muaj cov duab nyuaj thiab qhov ntev. Cov txheej txheem no suav nrog kev sib xyaw nickel hmoov, tooj liab-tungsten hmoov, thiab tungsten hmoov ntawm ntau qhov ntau thiab tsawg; Tom qab ntawd ntxiv cov organic binder los tsim cov khoom noj, uas yog tom qab txhaj rau hauv pwm siv lub tshuab txhaj tshuaj molding los tsim cov duab uas xav tau. Tom qab ib kauj ruam debinding kom tshem tawm cov organic binder, cov ntaub ntawv undergoes siab -kub sintering kom yield siab -density tungsten- tooj liab alloy khoom. Txoj kev no txhim kho kev siv cov khoom siv tau zoo thiab txo qhov kev xav tau ntawm kev ua haujlwm machining tom ntej, ua rau nws tsim nyog rau loj - nplai automated ntau lawm.
Nyob rau hauv kev siv tswv yim, ntshiab tungsten hu yog dav fabricated rau ntau yam ntaub ntawv ntawm precision Cheebtsam, xws li hluav taws xob tungsten hu rivets. Cov rivets no feem ntau ua haujlwm raws li cov ntsiab lus tseem ceeb, ntsia hauv ntau yam ntawm siab -voltage thiab low-voltage hluav taws xob hloov. Lawv yuav tsum tsis yog tsuas yog tiv thaiv kev cuam tshuam ntawm cov neeg kho tshuab tsis tu ncua tab sis kuj tseem ua cov dej ntws loj heev thaum lub sijhawm kaw lub voj voog. Ua tsaug rau lawv cov hardness siab thiab tshwj xeeb tsis kam rau kev sib cuag vuam, tungsten- tooj liab rivets muaj peev xwm tuav ruaj khov tiv thaiv ntau tshaj kaum lossis ntau pua txhiab lub voj voog ua haujlwm, ua lub hauv paus rau kev ua kom muaj kev nyab xeeb ntawm cov tshuab hluav taws xob.
Kev lag luam tsheb kuj tseem sawv cev rau cov ntawv thov tseem ceeb rau tooj liab -tungsten hu, tshwj xeeb tshaj yog nyob rau hauv daim ntawv ntawm tungsten hu rau maus taus horns. Cov chaw sab hauv ntawm lub tsheb maus taus thiab tsheb horns raug kaw, thiab lawv qhov chaw ua haujlwm tau ua rau muaj kev vibration tsis tu ncua thiab kev hloov pauv tseem ceeb hauv cov av noo. Cov kev sib txuas ntawm cov nyiaj ib txwm muaj feem cuam tshuam rau hluav taws xob yaig lossis adhesion nyob rau hauv siab heev -tam sim no surges- cov teeb meem uas tuaj yeem ua rau lub horn tsis hnov los yog ua rau daig hauv qhov tsis sib xws. Hauv qhov sib piv, cov neeg sib cuag uas tsim los ntawm tungsten- cov ntaub ntawv tooj liab siv lawv cov kev tiv thaiv zoo rau arc yaig los xyuas kom meej tias lub horn tseem ua rau lub suab nrov tsis tu ncua, txawm tias nyob rau hauv cov xwm txheej hnyav, yog li txhim kho lub tsheb lub teeb liab kev nyab xeeb kev ua tau zoo.
Hauv cov ntsiab lus, AC Contactor Tungsten Contacts- txawv los ntawm lawv cov qauv tsim tshwj xeeb - seamlessly integrate lub siab - kub tsis kam thiab ablation tsis kam ntawm tungsten nrog superior hluav taws xob thiab thermal conductivity ntawm tooj liab. Ua los ntawm ntau cov txheej txheem siab heev-nrog rau kev nkag mus, tooj liab oxide hmoov txo, thiab txhaj tshuaj molding- cov kev sib cuag no tau siv dav hauv ntau lub tshuab hluav taws xob, xws li cov khoom siv hauv tsev mus rau siab -voltage power grid.
Yog tias koj tab tom nrhiav tam sim notungsten hu rau Circuit Court breakers, peb caw koj hu rau peb txhua lub sijhawm. Peb pab pawg kws tshaj lij tau npaj los muab kev txhawb nqa dav dav -kev xaiv cov khoom siv, kev tsim cov txheej txheem, thiab kev tsim ua kom raug- los pab koj cov khoom hluav taws xob ua tiav qib tshwj xeeb ntawm kev ntseeg tau.
tiv tauj peb
