Vuam rods -}}}}}} yog qhov tseem ceeb rau kev thaiv cov hlau vuam (smaw), lawv tuaj yeem "mus tsis zoo" dhau sijhawm. Lawv cov kev ua tau zoo rau kev nqus dej noo, kev puas tsuaj rau lub cev, lossis hloov tshuaj lom neeg, coj mus rau hauv cov av muaj zog, muaj cov arcs tsis ruaj khov. Thaum Rods tsis muaj hnub tas sij hawm kawg, lawv siv tau raws li kev cia khoom thiab hom, nrog qee yam (zoo li tsawg} hydrogen rods) ua rau muaj ntau dua lwm tus.
Vim li cas Vuam cov pas nrig mus tsis zoo: Qhov tseem ceeb ua
Vuam cov pas nrig ua rau pom kev tshwj xeeb vim ib puag ncig thiab kev puas tsuaj ntawm ib puag ncig thiab kev puas tsuaj ntawm kev puas tsuaj, nrog noo noo ua tus neeg ua txhaum feem ntau:
Kev nqus dej noo: Feem ntau cov vuam pas nrig muaj cov txheej txheej flux uas tiv thaiv lub pas dej weld thiab ruaj ruaj rau arc. No flux yog hygroscopic - nws nqus dej los ntawm huab cua noo, uas vapones thaum muaj vuam thiab tsim kom muaj roj av roj av thiab muaj roj av. Hydrogen daig hauv Weld ua rau porosity, kab nrib pleb, lossis "underbead cracking" (ib daim ntawv txaus ntshai ntawm kev puas tsuaj sab hauv) hauv siab- lub zog hlau. Tsawg - hydrogen rods (piv txwv li E7018) yog tsim kom txo qis hydrogen {}} me me txawm tias muaj cov dej noo me me.
Flux tsis zoo: Sij hawm ua haujlwm ntau zaus, Tshuaj, lossis tawg, tshwj xeeb yog cov pas nrig raug rho tawm lossis khaws cia tsis raug cai lossis khaws cia tsis raug lossis khaws cia tsis raug cai lossis khaws cia tsis raug cai lossis khaws cia tsis raug cai lossis khaws cia tsis raug cai lossis khaws cia tsis raug cai lossis khaws cia tsis raug cai lossis khaws cia tsis raug cai. Ib qho kev puas tsuaj flux tsis kam muab cov pas weld pas, ua kom muaj kev sib xyaw, lossis tsis sib thooj los ntawm cov pa taws.
Kev puas tsuaj ntawm lub cev: khoov, warped, lossis xeb tseem ceeb xov (tus pas nrig hlau qab flux) cuam tshuam Arc ruaj khov. Rusted Cores qhia cov impurities rau hauv weld, thaum khoov pas nrig yaj tsis ncaj, tsim cov pob qij txha tsis muaj zog, tsim cov pob qij txha tsis muaj zog.
Kev paug paug: Raug cov roj, plua plav, lossis tshuaj lom neeg (piv txwv li cov tshuaj txhuam hniav nyob ze tus flux, ua rau nws hlawv tsis sib xws lossis tsim cov tshuaj lom neeg tsis sib xws thaum lub ntsej muag sib xyaw.
Cov cim qhia tias ib tug vuam pas nrig tau ploj mus tsis zoo
Welders tuaj yeem paub cov pas nrig tsis zoo los ntawm kev tshuaj ntsuam thiab vuam kev ua haujlwm:
Kev ua yeeb tus chij liab:
Flux puas: cov kab nrib pleb, daim tawv nyias, lossis flaking hauv flux coating - Cov kav hlau me me kom ya raws thiab paug.
Lo nplaum lossis cov nqaij mos flux: flux uas pom tias Tacky lossis mos kom kov tau nqus dej noo, muaj ntau hauv cov pas dej noo.
Rusted Corek Hlau: ib qho xeb lossis pleev xim ntawm cov kab taw lossis qhov twg gripped) txhais tau tias tus pas nrig kis tau.
Bent lossis warped pas nrig: pas nrig uas tsis txhob dag ncaj lossis muaj kinks yuav yaj tsis ncaj, ua rau tsis sib xws arcs.
Vuam kev ua si teeb meem:
Porosity: Npuas lossis qhov hauv Weld hlaws, tshwm sim los ntawm hydrogen roj los ntawm kev ya raws hauv flux.
Tsis khov arc: lub arc surutters, pops, lossis tua hluav taws yooj yim, feem ntau vim yog kev puas tsuaj rau flux lossis cov tub ntxhais tsis huv.
Kev tawg pleb: Welds uas txhim kho tawg (tshwj xeeb tshaj yog nyob rau hauv hydrogen hydrogen {}}}}}} nqus cov pas nrig.
Cov ncauj lus ntau dhau: cov cim tias flux tsis tsim nyog tiv thaiv lub pas dej weld, feem ntau yog rau kev ua kom tsis zoo.
Lifespan los ntawm Rod yam
Lub neej ntawm lub vuam pas nrig nyob ntawm nws hom thiab cia. Qee cov pas nrig nyob deb dua li lwm tus:
Tsawg - hydrogen rods (piv txwv li E7018, E8018): Cov no muaj lub neej luv tshaj plaws- 6-12 lub hlis nyob rau hauv tus qauv cia. Lawv cov flux yog tsim los txwv hydrogen, yog li txawm tias nqus dej noo tuaj yeem ua rau kev tawg hauv cov txheej txheem welds. Lawv xav tau txoj cai nruj hauv kev sib khi, cov thawv noo-pov thawj lossis ncu (khaws cia ntawm 250-300 Degree F) kom tiv thaiv kev ua kom tsis txhob muaj kev tsis pom zoo.
General - Lub Hom Phiaj Rods (piv txwv li E6010, E6013): Cov no yog resilient ntau, kav 1-2 xyoo nyob rau hauv qhuav cia. Lawv cov flux tsis tshua nkag siab txog noo noo, txawm hais tias lub sijhawm ntev ({{8 hli E6010 rods, siv rau cov yeeb nkab vuam, tej zaum yuav tsim kho nyuaj, loj taub yog tias muab tso cia tsis zoo, ua rau arc tsis muaj peev xwm.
Stainless hlau rods (piv txwv li, e308- 16): cov no 2-3 xyoo nrog kev cia khoom kom zoo. Lawv cov flux tsis kam noo zoo dua li cov ntau yam tsawg-hydrogen ntau yam tab sis tseem tuaj yeem nqus tau txaus kom ua rau chromium depetion (txo corrosion (txo corrosion resistance). Xub ntawm cov hlau tseem ceeb (muaj ntau yam hauv cov chaw noo) puas yog lawv qhov kev ua tau zoo.
Cam khwb cia hlau qws (piv txwv li, ni - 5-4 xyoos-tab sis lawv cov flux yuav tawg tuaj yeem tawg tau yog tias kub ntxhov. Ib qho kev tawg tau fluex coating tsis kam tiv thaiv cov pa hluav taws kev tsiv teb tsaws, ua rau lub thoob ntaub qhwv ntawm Welds hlau.
Yuav ua li cas tiv thaiv vuam rods los ntawm mus phem
Tsim nyog cia yog qhov tseem ceeb kom txuas ntxiv ib tus pas nrig putpanes:
Siv cov thawv ntim khoom: Muab cov khoom siv tsis pom zoo hauv lawv cov khoom ua pov thawj uas muaj hlau tshuab ultrasonic {{1} {1} {1}-} i} {1}-} i} {1}-} i} {1} {}}} lw} nplej cia hnab). Thaum qhib, hloov cov pas nrig tsis siv rau ib lub qhov cub lossis ib lub ntim, airtight ntim nrog desiccant pob kom nqus noo noo.
Tswj cov av noo: cia chaw cia kom qhuav (av noo qis dua 50%). Tsawg - hydrogen pas nrig yuav tsum tau tshwj xeeb rods ncu tso noo noo kom cov ncu khiav no
Zam kev puas tsuaj rau lub cev: khw cov pas nrig hauv ib lub khib ntsug lossis rooj plaub los tiv thaiv kev puas yog khoov. Tsis txhob poob cov pas nrig, raws li cov no chips flux txheej. Kov lawv los ntawm qhov xaus, tsis yog flux, kom tsis txhob muaj paug.
Tiv thaiv qhov ntsuas kub ntawm qhov kawg: tsis txhob khaws cov pas nrig khaws cia ze rau lub cua sov, cua txias, lossis lub qhov rais nrog lub hnub ncaj qha. Kev ntsuas kub heev qhov kev hloov kho ua rau cov hws hws, uas tau txiav txim rau flux.
Koj puas tuaj yeem khaws cia tus pas nrig vuam phem?
Muaj qee kis, me ntsis degraded pas nrig tuaj yeem cawm tau:
Tsawg - hydrogen rods: yog tias raug rau noo noo tab sis tsis muaj kev puas tsuaj rau hauv 500-600℃f rau 1-2 teev kom tshem tawm ya raws. Qhov no rov qab lawv qhov kev ua tau zoo rau tsis- kev ua haujlwm vems, tab sis tsis txhob siv lawv rau kev ua haujlwm noo noo Tom qab noo noo
General - lub hom phiaj rods: So maj mam xeb nrog lub x txhuam txhuam kom tshem tawm cov xeb saum npoo av, thiab kuaj xyuas flux puas. Yog tias flux yog lawm, lawv tuaj yeem ua haujlwm rau tsis- cov khoom siv ua liaj ua teb), txawm tias pontosity pheej hmoo.
Kev ua puas ntau rau Rods - nrog tawg flux, xeb hnyav, lossis bent cores {}} yuav tsum muab pov tseg. Siv lawv cov kev pheej hmoo weld tsis ua haujlwm, uas yog tus nqi ntau dua li hloov ob peb pas nrig.
Xaus: Rods degrade, tab sis kom tsim nyog txuas ntxiv usability
Vuam cov pas nrig ua tsis zoo, nrog noo noo thiab lub cev puas yog lub qhov ua rau. Tsawg - hydrogen rods yog qhov feem ntau perishable, thaum dav- lub hom phiaj rods ntev nrog kev saib xyuas kom zoo. Los ntawm khaws cia cov pas nrig hauv qhuav, ntim chaw ib puag ncig- hydrogen ntau yam {} Welders tau txuas ntxiv lawv lub neej tuaj yeem txuas ntxiv lawv lub neej tuaj yeem txuas ntxiv lawv lub neej tuaj yeem txuas ntxiv lawv lub neej.
The key takeaway: Inspect rods before use for flux damage, moisture, or rust. Yog tias tsis ntseeg, ntsuam xyuas ib tus pas nrig ntawm cov qauv hlau {1} porosity, tsis khov arcs, lossis tawg txhais tau tias nws yog lub sijhawm los hloov nws.
