Hauv cov txheej txheem vuam, muaj ntau yam teeb meem xav tau kev saib xyuas.Ib zaug tsis saib xyuas, nws yuav ua yuam kev loj.Cov no yog cov ntsiab lus uas koj yuav tsum tau them sai sai rau yog tias kuaj xyuas cov txheej txheem vuam.Yog tias koj cuam tshuam nrog kev sib tsoo zoo, koj tseem yuav tsum tau them sai sai rau cov teeb meem no!
1. Vuam kev tsim kho tsis xyuam xim rau xaiv qhov zoo tshaj plaws voltage
[Qhov tshwm sim] Thaum lub sij hawm vuam, tib qhov hluav taws xob arc raug xaiv tsis hais txog ntawm qhov hauv qab, txhaws, thiab capping, tsis hais qhov loj ntawm qhov zawj.Nyob rau hauv txoj kev no, qhov yuav tsum tau nkag mus rau qhov tob thiab fusion dav yuav tsis raug, thiab qhov tsis xws luag xws li undercut, pores, thiab splashes yuav tshwm sim.
[Kev ntsuas] Feem ntau, raws li cov xwm txheej sib txawv, qhov sib thooj ntev arc lossis luv arc yuav tsum raug xaiv kom tau txais vuam zoo dua thiab ua haujlwm tau zoo.Piv txwv li, kev ua haujlwm luv-arc yuav tsum tau siv kom tau txais kev nkag mus zoo dua thaum lub vuam hauv qab, thiab qhov hluav taws xob arc tuaj yeem tsim nyog kom tau txais kev ua haujlwm siab dua thiab fusion dav thaum lub sij hawm txhaws vuam lossis hau vuam.
2. Vuam tsis tswj cov vuam tam sim no
[Qhov tshwm sim] Thaum lub sij hawm vuam, txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau ua haujlwmLub zog Performance index poob, lossis txawm tias tsis ua raws li tus qauv yuav tsum tau ua, thiab cov kab nrib pleb tshwm sim thaum lub sij hawm khoov, uas yuav ua rau kev ua haujlwm ntawm cov pob qij txha tsis tuaj yeem lav thiab ua rau muaj kev phom sij rau kev nyab xeeb ntawm cov qauv.
[Kev ntsuas] Vuam yuav tsum tau tswj raws li cov vuam tam sim no hauv cov txheej txheem kev ntsuas, thiab 10-15% hloov pauv tau tso cai.Qhov loj ntawm blunt ntug ntawm qhov zawj yuav tsum tsis pub tshaj 6 hli.Thaum docking, thaum lub thickness ntawm lub phaj siab tshaj 6 hli, lub bevel yuav tsum tau qhib rau vuam.
3. Tsis txhob xyuam xim rau qhov vuam ceev thiab vuam tam sim no, thiab txoj kab uas hla ntawm vuam pas nrig yuav tsum tau siv nyob rau hauv kev sib raug zoo.
[Phenomenon] Thaum vuam, tsis txhob xyuam xim tswj cov vuam ceev thiab vuam tam sim no, thiab siv cov electrode txoj kab uas hla thiab vuam txoj hauj lwm hauv kev sib koom tes.Piv txwv li, thaum rooting welding yog ua nyob rau hauv siab nkag mus rau kaum pob qij txha, vim lub nqaim hauv paus loj, yog hais tias lub vuam ceev ceev heev, cov roj thiab slag inclusions nyob rau hauv lub hauv paus yuav tsis muaj sij hawm txaus los tso tawm, uas yuav yooj yim ua tsis xws luag. xws li kev nkag mus tsis tiav, slag inclusions, thiab pores ntawm cov hauv paus hniav;Thaum lub sij hawm npog welding, yog tias qhov vuam ceev ceev heev, nws yooj yim los tsim qhov pores;Yog tias qhov vuam ceev qeeb dhau lawm, qhov vuam vuam yuav siab dhau thiab cov duab yuav tsis sib xws;Yooj yim, yooj yim los hlawv thiab lwm yam.
[Measures] Vuam ceev muaj feem cuam tshuam rau vuam zoo thiab vuam ntau lawm efficiency.Thaum xaiv, xaiv qhov tsim nyog vuam txoj hauj lwm raws li qhov vuam tam sim no, vuam txoj hauj lwm (hauv qab vuam, txhaws vuam, npog vuam), vuam thickness, thiab zawj loj.Ceev, nyob rau hauv lub premise ntawm kev ruaj ntseg nkag mus, yooj yim tawm ntawm cov pa roj thiab vuam slag, tsis hlawv-los ntawm, thiab zoo sib sau, ib tug dua vuam ceev yog xaiv los txhim kho productivity thiab efficiency.
4. Tsis txhob xyuam xim rau kev tswj lub arc ntev thaum vuam
[Phenomenon] Qhov ntev arc tsis raug kho raws li qhov zawj hom, tus naj npawb ntawm cov txheej vuam, vuam daim ntawv, hom electrode, thiab lwm yam thaum vuam.Vim yog siv tsis raug ntawm vuam arc ntev, nws yog ib qho nyuaj kom tau txais welds zoo.
[Kev ntsuas] Txhawm rau kom ntseeg tau qhov zoo ntawm qhov vuam, kev ua haujlwm luv luv feem ntau yog siv thaum lub sijhawm vuam, tab sis qhov tsim nyog arc ntev tuaj yeem xaiv raws li qhov sib txawv kom tau txais qhov zoo tshaj plaws vuam zoo, xws li V-groove pob tw, fillet sib koom ua ntej Thawj txheej yuav tsum tau siv ib tug luv luv arc los xyuas kom meej nkag mus tsis tau undercutting, thiab thib ob txheej yuav ua tau me ntsis ntev mus sau lub weld.Qhov luv luv arc yuav tsum tau siv thaum lub vuam qhov sib txawv me me, thiab lub arc tuaj yeem ntev me ntsis thaum qhov sib txawv loj, kom qhov vuam ceev tuaj yeem nrawm dua.Lub arc ntawm overhead welding yuav tsum yog luv tshaj plaws los tiv thaiv cov hlau molten los ntawm ntws;Txhawm rau tswj qhov kub ntawm lub pas dej molten thaum lub sijhawm vuam ntsug thiab kab rov tav vuam, tsis tshua muaj tam sim no thiab luv arc vuam yuav tsum tau siv.Tsis tas li ntawd, tsis muaj teeb meem dab tsi ntawm kev siv vuam, nws yog ib qho tsim nyog yuav tsum ua kom qhov ntev ntawm qhov arc tsis hloov thaum lub sij hawm txav mus los, txhawm rau xyuas kom meej tias qhov dav ntawm fusion thiab qhov tob tob ntawm tag nrho cov vuam zoo ib yam.
5. Welding tsis xyuam xim rau kev tswj vuam deformation
[Qhov tshwm sim] Thaum vuam, qhov deformation tsis raug tswj los ntawm cov yam ntxwv ntawm vuam ib ntus, kev npaj cov neeg ua haujlwm, groove daim ntawv, vuam specification xaiv thiab txoj kev ua haujlwm, uas yuav ua rau loj deformation tom qab vuam, nyuaj kho, thiab nce nqi, tshwj xeeb tshaj yog rau tuab. phaj thiab workpieces loj.Kev kho yog qhov nyuaj, thiab kev kho tshuab kho tau yooj yim ua rau tawg lossis lamellar kua muag.Tus nqi ntawm kev kho cov nplaim hluav taws kub yog siab thiab kev ua haujlwm tsis zoo tuaj yeem ua rau overheating ntawm workpiece.Rau cov khoom ua haujlwm nrog cov kev xav tau siab tshaj plaws, yog tias tsis muaj kev tswj hwm kev tswj hwm zoo, kev teeb tsa loj ntawm lub workpiece yuav tsis ua raws li qhov yuav tsum tau siv, thiab txawm tias rov ua dua lossis seem yuav tshwm sim.
[Kev ntsuas] Txais qhov tsim nyog vuam ib ntus thiab xaiv qhov tsim nyog vuam specifications thiab kev khiav hauj lwm txoj kev, thiab kuj txais yuav los tiv thaiv deformation thiab nruj fixation ntsuas.
6. Tsis siv neeg vuam ntawm ntau txheej vuam, tsis xyuam xim rau kev tswj qhov kub ntawm txheej txheej
[Phenomenon] Thaum vuam tuab daim hlau nrog ntau txheej, tsis txhob xyuam xim rau interlayer kub tswj.Yog hais tias lub sij hawm nruab nrab ntawm cov khaubncaws sab nraud povtseg ntev dhau lawm, welding tsis re-preheating yuav yooj yim ua rau txias tawg ntawm cov khaubncaws sab nraud povtseg;Yog tias lub sijhawm luv luv, qhov kub ntawm qhov sib txuas yuav yog qhov kub siab dhau (ntau tshaj 900 ° C), nws tseem yuav cuam tshuam rau kev ua haujlwm ntawm cov vuam thiab cov cua sov uas cuam tshuam rau cheeb tsam, uas yuav ua rau cov nplej ntxhib, uas ua rau muaj kev cuam tshuam rau kev ua haujlwm ntawm cov vuam thiab cov cua sov, uas yuav ua rau cov nplej ntxhib. txo nyob rau hauv toughness thiab plasticity, thiab yuav ua rau muaj peev xwm zais kev phom sij rau cov pob qij txha.
[Kev ntsuas] Thaum vuam cov phaj tuab nrog ntau txheej, kev tswj qhov kub ntawm cov txheej yuav tsum tau ntxiv dag zog.Thaum lub sij hawm welding tsis tu ncua, qhov kub ntawm lub hauv paus hlau yuav tsum tau welded yuav tsum tau xyuas kom qhov kub ntawm cov khaubncaws sab nraud povtseg yuav khaws cia raws li zoo raws li lub preheating kub.Qhov kub siab tshaj plaws kuj tseem tswj tau.Lub sijhawm vuam yuav tsum tsis txhob ntev dhau.Nyob rau hauv cov ntaub ntawv ntawm kev cuam tshuam ntawm vuam, tsim nyog tom qab cua sov thiab cua sov ntsuas yuav tsum tau ua.Thaum welding dua, qhov rov ua kom sov yuav tsum tsim nyog siab dua qhov kub ntawm qhov pib preheating.
7. Yog hais tias ntau txheej weld tsis tshem tawm cov vuam slag thiab qhov chaw ntawm qhov vuam muaj qhov tsis xws luag, cov txheej qis yog welded.
[Qhov tshwm sim] Thaum vuam ntau txheej ntawm daim hlau tuab, txheej qis yog welded ncaj qha yam tsis tau tshem tawm cov vuam slag thiab qhov tsis xws luag tom qab txhua txheej yog welded, uas yuav ua rau muaj slag inclusions, pores, tawg thiab lwm yam tsis xws luag nyob rau hauv lub weld, txo cov slag inclusions. kev sib txuas lub zog thiab ua rau qis txheej vuam lub sij hawm txaws.
[Kev ntsuas] Thaum vuam ntau txheej ntawm cov phaj tuab, txhua txheej yuav tsum tau welded tsis tu ncua.Tom qab txhua txheej ntawm vuam yog welded, vuam slag, weld nto defects thiab spatter yuav tsum tau muab tshem tawm nyob rau hauv lub sij hawm, thiab qhov tsis xws luag xws li slag inclusions, pores thiab tawg uas cuam tshuam rau vuam zoo yuav tsum tau muab tshem tawm tag nrho ua ntej vuam.
8. Qhov luaj li cas ntawm qhov sib koom ua ke pob tw los yog kaum pob tw sib koom ua ke weld sib koom ua ke uas yuav tsum tau nkag mus tsis txaus.
[Qhov tshwm sim] T-shaped pob qij txha, hla cov pob qij txha, kaum pob qij txha thiab lwm cov pob tw lossis lub pob tw pob tw ua ke uas yuav tsum tau nkag mus, qhov loj ntawm lub vuam ceg tsis txaus, lossis qhov tsim ntawm lub vev xaib thiab sab sauv ntawm lub crane nqaj lossis zoo sib xws. Cheebtsam uas yuav tsum tau xyuas kom qaug zog Yog hais tias qhov loj ntawm lub vuam ceg ntawm lub phaj ntug kev twb kev txuas weld tsis txaus, lub zog thiab rigidity ntawm vuam yuav tsis ua tau raws li qhov yuav tsum tau tsim.
[Kev ntsuas] T-shaped pob qij txha, hla pob qij txha, cov pob qij txha fillet thiab lwm cov pob qij txha uas yuav tsum tau nkag mus yuav tsum muaj cov fillet txaus raws li cov qauv tsim.Feem ntau, qhov loj ntawm lub vuam fillet yuav tsum tsis pub tsawg tshaj 0.25t (t yog qhov sib koom ua ke thinner phaj thickness).Lub vuam ceg loj ntawm cov welds txuas lub vev xaib thiab lub flange sab sauv ntawm lub crane girder lossis cov webs zoo sib xws nrog kev kuaj xyuas qaug zog yog 0.5t, thiab yuav tsum tsis txhob siab tshaj 10mm.Qhov tso cai sib txawv ntawm vuam loj yog 0-4 hli.
9. Vuam ntsaws lub taub hau electrode lossis hlau thaiv hauv qhov sib koom ua ke
[Qhov tshwm sim] Vim tias nws nyuaj rau fuse lub taub hau electrode los yog hlau thaiv nrog cov welded ib feem thaum lub sij hawm vuam, nws yuav ua rau vuam tsis xws luag xws li tsis tiav fusion thiab tsis tiav kev nkag mus, thiab txo qhov kev sib txuas lub zog.Yog hais tias nws tau sau nrog rusty electrode hau thiab hlau thaiv, nws yog ib qho nyuaj kom ntseeg tau tias nws yog raws li cov khoom ntawm lub hauv paus hlau;Yog tias nws tau ntim nrog lub taub hau electrode thiab cov hlau thaiv nrog cov roj, impurities, thiab lwm yam, nws yuav ua rau muaj qhov tsis xws luag xws li lub qhov hws, slag inclusions, thiab tawg hauv qhov vuam.Cov xwm txheej no yuav txo tau qhov zoo ntawm cov vuam seam ntawm qhov sib koom ua ke, uas tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev tsim thiab kev qhia tshwj xeeb rau vuam seam.
[Kev ntsuas] <1> Thaum qhov sib dhos qhov sib txawv ntawm lub workpiece loj, tab sis tsis pub tshaj qhov kev tso cai ntawm kev siv, thiab qhov sib dhos qhov sib txawv ntau tshaj 2 npaug ntawm lub thickness ntawm lub phaj nyias los yog ntau tshaj 20 hli, txoj kev surfacing yuav tsum yog. siv los sau qhov chaw recessed lossis txo qhov sib dhos sib dhos.Nws yog nruj me ntsis txwv tsis pub siv txoj kev sau cov vuam pas nrig taub hau lossis hlau thaiv los kho qhov vuam hauv qhov sib koom ua ke.<2> Thaum ua thiab scribing qhov chaw, yuav tsum tau them nyiaj rau qhov txaus txiav nyiaj thiab vuam shrinkage nyiaj pab tom qab txiav, thiab tswj qhov luaj li cas ntawm qhov chaw.Tsis txhob nce qhov sib txawv kom ntseeg tau tias tag nrho qhov loj me.
10. Thaum daim hlau sib txawv thickness thiab dav siv rau docking, kev hloov tsis du
[Qhov tshwm sim] Thaum daim hlau sib txawv ntawm qhov sib txawv thiab qhov dav siv rau kev sib koom ua ke, tsis txhob mloog seb qhov sib txawv ntawm cov phaj yog nyob rau hauv qhov kev tso cai ntawm tus qauv.Yog tias nws tsis nyob rau hauv qhov kev tso cai thiab tsis muaj kev hloov pauv hloov maj mam, lub vuam seam yuav ua rau muaj kev ntxhov siab thiab vuam tsis zoo xws li tsis tiav fusion ntawm qhov chaw siab tshaj qhov tuab ntawm daim ntawv, uas yuav cuam tshuam rau vuam zoo.
[Kev ntsuas] Thaum cov kev cai cuam tshuam tau dhau lawm, lub vuam yuav tsum tau welded rau hauv txoj kab nqes, thiab qhov siab tshaj plaws ntawm txoj kab nqes yuav tsum yog 1: 2.5;los yog ib lossis ob sab ntawm cov tuab yuav tsum tau ua tiav rau hauv txoj kab nqes ua ntej vuam, thiab qhov siab tshaj plaws ntawm txoj kab nqes yuav tsum yog 1: 2.5, thaum txoj kab nqes ntawm cov qauv ncaj qha bears lub dynamic load thiab yuav tsum tau soj ntsuam qaug zog, txoj kab nqes yuav tsum tsis txhob yuav. ntau 1:4.Thaum daim hlau ntawm qhov sib txawv ntawm qhov sib txawv yog pob tw-txuas, thermal txiav, machining lossis sib tsoo lub log sib tsoo yuav tsum tau siv raws li lub Hoobkas thiab qhov chaw ua haujlwm kom hloov tau yooj yim, thiab qhov siab tshaj plaws ntawm txoj kab nqes ntawm qhov sib koom ua ke yog 1: 2.5.
11. Tsis txhob hnov qab txog kev sib txuas ntawm cov khoom sib txuas nrog cov welds
[Phenomenon] Rau cov khoom nrog ntoo khaub lig welds, yog hais tias peb tsis xyuam xim rau rationally teem lub vuam ib theem zuj zus los ntawm kev soj ntsuam lub vuam kev nyuaj siab tso tawm thiab lub zog ntawm welding kev nyuaj siab ntawm cov khoom deformation, tab sis weld vertically thiab horizontally randomly, qhov tshwm sim yuav ua rau longitudinal thiab kab rov tav pob qij txha los tswj ib leeg, ua rau loj Qhov kub shrinkage kev nyuaj siab yuav deform lub phaj, nto ntawm lub phaj yuav tsis sib xws, thiab nws yuav ua rau tawg nyob rau hauv lub weld.
[Kev ntsuas] Rau cov khoom siv nrog cov ntoo khaub lig welds, yuav tsum tsim kom muaj qhov tsim nyog vuam ua ntu zus.Thaum muaj ob peb hom ntsug thiab kab rov tav hla welds yuav tsum tau welded, transverse seams nrog loj shrinkage deformation yuav tsum tau welded ua ntej, thiab ces cov longitudinal welds yuav tsum tau welded, yog li ntawd lub transverse welds yuav tsis raug txwv los ntawm longitudinal welds thaum. welding lub transverse welds, thiaj li hais tias lub shrinkage kev nyuaj siab ntawm transverse seams Tso tawm yam tsis muaj kev txwv kom txo weld distortion, tswj weld zoo, los yog weld taub qab welds ua ntej thiab ces fillet welds
12. Thaum ib puag ncig vuam siv rau lub puab tsaig pob qij txha ntawm ntu steel rods, nruam vuam yuav tsum tau thov ntawm cov ces kaum.
[Qhov tshwm sim] Thaum lub puab tsaig sib koom ua ke ntawm ntu steel pas nrig thiab lub phaj txuas ntxiv yog nyob ib puag ncig los ntawm kev vuam, cov welds ntawm ob sab ntawm tus pas nrig yog welded ua ntej, thiab qhov kawg welds yog welded tom qab, thiab cov vuam tsis txuas ntxiv.Txawm hais tias qhov no muaj txiaj ntsig zoo los txo cov vuam deformation, nws yooj yim rau kev ntxhov siab thiab vuam tsis xws luag ntawm cov ces kaum ntawm cov pas nrig, uas cuam tshuam rau qhov zoo ntawm cov pob qij txha welded.
[Kev ntsuas] Thaum lub puab tsaig pob qij txha ntawm ntu steel rods yog welded, lub vuam yuav tsum tau ua kom tiav tsis tu ncua ntawm lub ces kaum ntawm ib zaug, thiab tsis txhob welding mus rau lub ces kaum thiab mus rau lwm sab rau vuam.
13. Yuav tsum muaj qhov sib npaug-lub zog docking, thiab tsis muaj arc-pib daim hlau thiab cov hlau lead-tawm daim hlau ntawm ob qho kawg ntawm crane nqaj tis phaj thiab lub vev xaib.
[Qhov tshwm sim] Thaum welding pob tw welds, tag nrho-nkaum fillet welds, thiab welds ntawm crane beam flange daim hlau thiab webs, tsis muaj arc-pib daim hlau thiab cov hlau lead-tawm daim hlau ntxiv rau ntawm arc-pib thiab coj-tawm cov ntsiab lus, yog li ntawd thaum welding qhov pib thiab xaus, Txij li qhov tam sim no thiab qhov hluav taws xob tsis ruaj khov txaus, qhov kub ntawm qhov pib thiab qhov kawg cov ntsiab lus tsis ruaj khov txaus, uas tuaj yeem yooj yim ua rau muaj qhov tsis xws luag xws li tsis tiav fusion, tsis tiav kev nkag mus, tawg, slag inclusions, thiab pores nyob rau hauv qhov pib thiab xaus welds, uas yuav txo tau lub zog ntawm weld thiab ua tsis tau raws li qhov yuav tsum tau tsim.
[Kev ntsuas] Thaum vuam pob tw welds, tag nrho-nkaum fillet welds, thiab welds ntawm crane girder flange thiab lub vev xaib, arc ntaus daim hlau thiab cov hlau lead-tawm daim hlau yuav tsum tau nruab rau ntawm ob qhov kawg ntawm qhov vuam.Tom qab qhov tsis xws luag yog rub tawm ntawm qhov chaw ua haujlwm, qhov tsis zoo raug txiav tawm kom ntseeg tau tias qhov zoo ntawm qhov vuam.
Post lub sij hawm: Lub Xya hli ntuj-12-2023