Resistance chaw vuam yog cov txheej txheem siv dav hauv kev tsim khoom, ua haujlwm los koom nrog cov ntawv hlau los ntawm kev tsim cov hluav taws xob hauv zos ntawm qhov chaw vuam. Kev xaiv ntawm cov khoom siv electrode ua lub luag haujlwm tseem ceeb hauv cov txheej txheem vuam, cuam tshuam rau yam xws li weld zoo, durability, thiab nqi-zoo.
1. Copper Electrodes
Copper electrodes yog ib qho kev xaiv ntau tshaj plaws rau cov khoom siv vuam tshuab. Lawv paub txog lawv cov thermal conductivity thiab hluav taws xob zoo heev, uas pab ua kom muaj cua sov tsim nyog rau vuam. Copper electrodes kuj muaj kev ua haujlwm zoo thiab tuaj yeem tiv taus qhov kub thiab txias. Txawm li cas los xij, lawv nyiam hnav dhau lub sijhawm thiab tej zaum yuav xav tau kev hloov pauv lossis tu.
2. Tungsten Electrodes
Tungsten electrodes yog lwm qhov kev xaiv rau qhov chaw vuam. Lawv muaj lub siab melting point thiab zoo heev hluav taws xob conductivity, ua rau lawv haum rau vuam daim ntaub ntawv uas muaj xws li kub kub thiab hluav taws xob tsis kam. Tungsten electrodes paub txog lawv lub neej ntev, tab sis lawv tuaj yeem ua tus nqi kim dua piv rau tooj liab electrodes.
3. Refractory hlau Alloys
Qee qhov kev tiv thaiv qhov chaw vuam yuav tsum muaj cov ntsiab lus melting ntau dua thiab ua haujlwm ntev dua li tungsten tuaj yeem muab tau. Nyob rau hauv tas li ntawd, refractory hlau alloys xws li molybdenum thiab tantalum yog siv. Cov ntaub ntawv no muaj qhov tshwj xeeb tiv thaiv tshav kub thiab corrosion, ua rau lawv zoo tagnrho rau cov haujlwm tshwj xeeb vuam. Txawm li cas los xij, lawv cov nqi siab tuaj yeem yog qhov txwv rau kev siv dav dua.
4. Composite Electrodes
Composite electrodes muab cov khoom sib txawv kom ua tiav qhov sib npaug ntawm cov khoom. Piv txwv li, tooj liab-tungsten composite electrode sib xyaw ua ke zoo heev ntawm tooj liab nrog rau qhov kub thiab txias tsis kam ntawm tungsten. Cov electrodes no muaj kev cuam tshuam ntawm tus nqi thiab kev ua haujlwm, ua rau lawv muaj kev xaiv nrov rau ntau daim ntawv thov vuam.
5. Electrode txheej
Qee zaum, electrodes yog coated nrog cov ntaub ntawv xws li chromium los yog zirconium los txhim kho lawv cov tsis kam hnav thiab corrosion. Cov txheej txheem no tuaj yeem txuas ntxiv lub neej ntawm cov electrode thiab txhim kho qhov zoo ntawm cov vuam.
Hauv kev xaus, kev xaiv ntawm cov khoom siv electrode rau qhov chaw vuam tshuab yog nyob ntawm ntau yam, nrog rau cov ntawv thov vuam tshwj xeeb, kev txiav txim siab nqi, thiab cov yam ntxwv xav tau. Copper, tungsten, refractory hlau alloys, cov ntaub ntawv sib xyaw, thiab electrode coatings txhua tus muaj lawv qhov zoo thiab kev txwv. Engineers thiab welders yuav tsum ua tib zoo soj ntsuam cov yam ntxwv no los xaiv cov khoom siv electrode uas haum tshaj plaws rau lawv cov kev xav tau, thaum kawg ua kom muaj kev vam meej ntawm cov txheej txheem vuam.
Post lub sij hawm: Sep-18-2023
