siab hardness thiab siab hnav tsis kam vuam electrode
Lub electrode muaj ib tug core thiab ib txheej.Lub electrode yog txheej txheej (txheej txheem) uniformly thiab centrally siv rau hauv cov tub ntxhais sab nraum cov hlau vuam core.Ntau hom electrode, cov tub ntxhais tseem txawv.Lub vuam core yog hlau core ntawm electrode.Txhawm rau kom ntseeg tau qhov zoo thiab kev ua haujlwm ntawm cov vuam, muaj cov kev cai nruj ntawm cov ntsiab lus ntawm ntau yam hlau
cov ntsiab lus nyob rau hauv cov tub ntxhais vuam, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm kev puas tsuaj impurities (xws li sulfur, phosphorus, thiab lwm yam), yuav tsum muaj kev txwv nruj, uas yog zoo dua li lub hauv paus hlau.Lub coated hlau core ntawm electrode yog hu ua weld core.Weld core feem ntau yog cov hlau hlau uas muaj qhov ntev thiab txoj kab uas hla.Thaum lub sij hawm vuam, cov tub ntxhais vuam muaj ob txoj haujlwm: ib qho yog ua cov vuam tam sim no thiab tsim hluav taws xob arc hloov hluav taws xob rau hauv lub zog hluav taws xob;Lwm qhov yog kom yaj lub vuam core nws tus kheej li cov hlau muab tub lim thiab cov kua hauv paus hlau los fuse los ua ib qho kev sib txuas.
Vuam core thiab txheej.
Ib tug tub ntxhais yog ib tug hlau ntawm ib txoj kab uas hla thiab ntev.Lub luag haujlwm ntawm vuam core;Ib qho yog ua raws li electrode thiab tsim hluav taws xob arc;Qhov thib ob, tom qab melting raws li ib tug muab tub lim, thiab lub melted puag hlau ua ke los tsim ib tug weld.Cov tshuaj muaj pes tsawg leeg ntawm cov tub ntxhais weld yuav cuam tshuam ncaj qha rau qhov zoo ntawm cov vuam, yog li cov tub ntxhais vuam tshwj xeeb yog smelted los ntawm steel mills.Carbon qauv steel vuam pas nrig yog feem ntau siv nyob rau hauv peb lub teb chaws.Lub vuam core hom yog H08 thiab H08A, nrog cov ntsiab lus ntawm cov pa roj carbon monoxide nruab nrab ntawm 0.08% (A sawv rau qhov zoo).
Txoj kab uas hla ntawm lub electrode yog qhia los ntawm txoj kab uas hla ntawm lub vuam core.
Qhov feem ntau siv txoj kab uas hla yog 3.2 ~ 6mm thiab qhov ntev yog 350 ~ 450mm.
Txheej sab nraud ntawm lub vuam core, yog ua los ntawm ntau yam minerals (xws li marble, fluorite, thiab lwm yam), hlau alloy thiab binder thiab lwm yam raw cov ntaub ntawv raws li ib tug tej feem ntawm kev npaj.Lub luag haujlwm tseem ceeb ntawm cov txheej yog ua kom lub arc ignite yooj yim thiab ruaj khov arc combustion;Ib tug loj npaum li cas ntawm cov roj thiab slag yog tsim los tiv thaiv cov hlau ntawm lub molten pas dej ua ke los ntawm oxidation.Tshem tawm cov teeb meem impurities (xws li oxygen, hydrogen, sulfur, phosphorus, thiab lwm yam) thiab ntxiv cov ntsiab lus alloying los txhim kho cov khoom siv ntawm lub vuam.
Cov electrode tuaj yeem siv los ua electrode rau kev siv vuam tam sim no, thiab ua cov khoom siv hlau rau vuam seam thiab cov khoom tiv thaiv rau vuam pas dej ua ke.
