Qhov zoo tshaj plaws tungsten electrode rau ib daim ntawv thov tshwj xeeb yog nyob ntawm yam xws li hom vuam, cov khoom siv vuam thiab vuam tam sim no. Txawm li cas los xij, qee qhov feem ntau siv tungsten electrodes suav nrog:

1. Thoriated tungsten electrode: feem ntau yog siv rau DC vuam ntawm stainless hlau, npib tsib xee alloy thiab titanium. Lawv muaj zoo arc pib thiab stability zog.

2. Tungsten-cerium electrode: haum rau AC thiab DC vuam, feem ntau siv rau vuam carbon steel, stainless hlau, npib tsib xee alloy thiab titanium. Lawv muaj zoo arc pib zog thiab tsawg burnout tus nqi.

3. Lanthanum Tungsten Electrodes: Cov no yog ntau yam electrodes haum rau AC thiab DC vuam ntawm carbon steel, stainless hlau, npib tsib xee alloys thiab titanium. Lawv muaj qhov zoo arc stability thiab kev pab lub neej ntev.

4. Zirconium tungsten electrode: feem ntau yog siv rau AC vuam ntawm txhuas thiab magnesium alloys. Lawv muaj kev tiv thaiv zoo rau kev sib kis thiab muab qhov chaw ruaj khov.

Nws yog ib qho tseem ceeb rau kev sab laj tus kws tshaj lij vuam lossis xa mus rau cov lus qhia tshwj xeeb ntawm kev siv vuam los txiav txim siab qhov zoo tshaj plaws tungsten electrode rau ib txoj haujlwm vuam tshwj xeeb.

Tungsten tsis muaj zog dua pob zeb diamond. Pob zeb diamond yog ib qho ntawm cov ntaub ntawv nyuaj tshaj plaws paub thiab muaj qhov tshwj xeeb hardness thiab lub zog. Nws yog tsim los ntawm carbon atoms teem nyob rau hauv ib tug tshwj xeeb siv lead ua qauv, uas muab nws cov yam ntxwv tshwj xeeb.

Tungsten, ntawm qhov tod tes, yog cov hlau hnyav heev thiab muaj zog nrog lub siab melting point, tab sis nws tsis nyuaj li pob zeb diamond. Tungsten feem ntau yog siv rau hauv cov ntawv thov uas xav tau lub zog siab thiab kub ua haujlwm, xws li kev tsim cov cuab yeej ua haujlwm siab, kev sib cuag hluav taws xob, thiab kev lag luam aerospace.

Hauv cov ntsiab lus, thaum tungsten yog cov khoom siv muaj zog thiab ruaj khov, nws tsis nyuaj li pob zeb diamond. Pob zeb diamond tseem yog ib qho ntawm cov khoom siv tawv tshaj plaws thiab ruaj khov uas paub txog tib neeg.

Tungsten muaj qhov siab tshaj plaws melting point ntawm 3,422 ° C (6,192 ° F), ua rau nws yog ib qho ntawm cov ntsiab lus melting siab tshaj plaws ntawm tag nrho cov ntsiab lus. Txawm li cas los xij, muaj qee yam khoom thiab cov xwm txheej uas tuaj yeem yaj tungsten:

1. Tungsten nws tus kheej: Tungsten tuaj yeem yaj tau siv qhov kub siab heev uas tsim los ntawm cov cuab yeej tshwj xeeb xws li hluav taws xob arc rauv lossis lwm txoj kev ua kom sov siab.

2. Tungsten-rhenium alloy: Ntxiv me me ntawm rhenium rau tungsten tuaj yeem txo qhov melting point ntawm cov hlau. Qhov no alloy yog siv nyob rau hauv tej yam kub kub daim ntaub ntawv uas yuav tsum tau ib tug qis melting point.

3. Tungsten kuj tuaj yeem yaj nyob rau hauv muaj qee yam reactive gases los yog nyob rau hauv tej yam kev mob nyob rau hauv ib puag ncig tswj.

Feem ntau hais lus, melting tungsten yuav tsum muaj huab cua vim nws qhov siab melting point, uas feem ntau tsis yooj yim kom ua tiav.