Koj puas muaj rau preheat li 7018 vuam pas nrig?

7018 vuam pas nrig yog ib feem ntau siv qis qis- Helds ntawm Weldsfer hom kev sib tw thiab cov hlab ntsha siab, xws li cov vaj ntxwv siab tsim. Rau ntau tus neeg Whders, cov lus nug tseem ceeb yog qhov tsim nyog preheating yog qhov tsim nyog thaum siv 70-1 vuam pas nrig. Lo lus teb tsis yog tsis meej- Nws nyob ntawm cov kev siv vuam, tab sis feem ntau, ua ntej yog xav tau.
1. Vim li cas preheating yog qhov tseem ceeb rau 7018 VUAM RODS?
1.1 Tiv Thaiv Hydrogen -} inducts nrib pleb
Qhov loj tshaj plaws ntawm 7018 vuam pas nrig yog lawv cov ntsiab lus hydrogen ntau nyob rau hauv cov kev pheej hmoo ntawm hydrogen-}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Cov kab nrib pleb hauv wrds. Txawm li cas los xij, yog tias lub vuam qws nqus dej noo los ntawm ib puag ncig (xws li tau khaws cia rau hauv qhov chaw noo) yuav nce ntxiv. Preheating lub vuam pas nrig tuaj yeem yaj cov dej noo uas nqus tau cov dej noo, txo cov hydrogen nkag mus rau hauv lub tog weld. Hydrogen -}} Cov kab nrib pleb feem ntau tshwm sim hauv cov cua txias (Haz)
1.2 Txhim Kho Weldability
Preheating lub hauv paus hlau (tsis yog lub vuam qws nws tus kheej) tuaj yeem qeeb qeeb ntawm Weld thiab cua sov- cuam tshuam cheeb tsam. Rau 7018 vuam pas nrig, uas feem ntau siv rau weld nruab nrab thiab high {{{4 4}} Lub zog ceev ntawm qhov sib koom tes thiab nce kev pheej hmoo ntawm kev tawg. Kev ua kom zoo yuav txo qhov ntsuas kub ntawm Weld thiab cov hlau hauv paus, tso cai hlau kom txias dua thiab tsis txhob muaj qhov ua kom zoo dua.
1.3 Ua kom meej fusion zoo
Nyob rau hauv lub vuam ntawm tuab workpieces, yog tias tsis muaj preheating, kub los ntawm cov khaub thuas yooj yim, ua rau nws nyuaj rau cov vuam relding txaus. Qhov no yuav ua rau tsis xws luag xws li tsis tiav fusion thiab nkag tsis tau. Preheating tsa qhov kub ntawm lub hauv paus hlau ua ntej, ua kom muaj kev tawm hws kom sov rau lub hauv paus thiab lub ntsej muag sib tw
2. Thaum twg yog preheating ntawm 7018 vuam pas tsim nyog?
2.1 tuab ntawm lub hauv paus hlau
Thaum cov tuab tuab ntawm cov hlau hauv paus ntau dua li qee yam, preheating ua qhov tsim nyog. Feem ntau, yog tias cov tuab tuab ntawm lub hauv paus hlau yog ntau dua 12 hli, ua ntej yog pom zoo. Rau cov haujlwm ua haujlwm nrog cov tuab ntawm ntau dua 25mm, preheating yog yuav luag yuav tsum tau ua. Qhov no yog vim tias tuab workpieces muaj qhov muaj peev xwm kub loj thiab txias sai sai tom qab vuam. Tsis muaj preheating, txoj kev pheej hmoo ntawm hydrogen - Cov kab nrib pleb thiab cua sov- cuam tshuam cheeb tsam nce siab.
2.2 cov khoom siv ntawm cov hlau hauv paus
Yog tias lub hauv paus kav hlau yog qhov siab - lub zog qis {{{{{{{{2 {{{2} Yuav tsum tau nqa tawm thaum siv 7018 Vuam qws. Cov ntaub ntawv no zoo dua rau hydrogen thiab txias tus nqi, thiab txawm rau cov haujlwm nyias, yuav tsum muaj kom muaj kev nyuaj siab. Piv txwv li, thaum vuam A514 siab - lub zog steel nrog 7018} degree, nyob ntawm qhov tuab ntawm works ntawm workpiece.
2.3 ib puag ncig cov xwm txheej
Hauv qhov qis - 0℃0 degree), txawm tias muaj 70 tus vuam hlau yog qhov tsim nyog. Tsawg qhov chaw kub yuav ua kom cov cua txias ntawm cov neeg Weld, ua kom muaj kev pheej hmoo zuj zus zuj zus. Ib qho ntxiv, yog tias cov workpiece yog nyob rau hauv ib puag ncig vuam muaj peev xwm nqus noo noo, thiab preheating lub pas dej vuam tuaj yeem txo qhov kev cuam tshuam ntawm cov dej noo ntawm cov weld zoo.
2.4 Tus qauv vuam thiab lub xeev kev ntxhov siab
Rau welded qauv nrog kev txwv siab, xws li cov pob qij txha tawv lossis kaw cov qauv, preheating yog qhov tseem ceeb. Kev txwv kev ntxhov siab tsim tawm thaum lub sij hawm vuam, ua ke nrog qhov txias txias ntawm weld, tuaj yeem ua rau cov kab nrib pleb. Preheating tuaj yeem txo qhov sib txawv qhov sib txawv ntawm Weld thiab cov hlau hauv paus, yog li txo qis kev ntxhov siab. Piv txwv li, hauv lub vuam ntawm lub thawv {{} Cov qauv zoo li siab, thiab cov pas nrig vuam muaj peev xwm tiv thaiv kev tawg.
3. Yuav ua li cas kom raug Preheat 7018 vuam pas nrig thiab cov hlau sib hlau?
3.1 preheating ntawm lub vuam qws
70118 vuam pas nrig yuav tsum muab cia rau hauv ib puag ncig qhuav tom qab kev yuav khoom. Yog tias lawv raug rau huab cua noo rau lub sijhawm ntev (xws li cia nyob rau hauv ib lub tsev rau khoom nrog cov av noo), lawv yuav tsum tau ci ua ntej siv. Tus qauv ci kub yog 350 - 400 degree, thiab lub sijhawm ci yog {}} sijhawm. Tom qab ci, lub vuam pas nrig yuav tsum tau muab cia rau hauv kev tuav lub qhov cub ntawm {}}℃los tiv thaiv rov {}}}}}}}}}} ntawm noo noo. Thaum coj lawv tawm rau siv, lawv yuav tsum muab tso rau hauv lub hnab ntim hluav taws xob portable kom tsis txhob muaj kev sib cuag nrog huab cua noo rau lub sijhawm ntev. Feem ntau, yog tias lub vuam pas nrig yog coj tawm ntawm kev tuav lub qhov cub rau ntau tshaj 4 teev, nws yuav tsum tau rov {{maked.
3.2 preheating ntawm lub hauv paus hlau
Lub preheating kub ntawm lub hauv paus yuav tsum tau txiav txim siab raws li cov khoom siv, tuab, thiab vuam specifications. Cov hau kev preheering muaj xws li cov nplaim hluav taws kub (siv cov pa roj oxy- acetylene cua sov, thiab induction cua sov. Thaum lub sij hawm preheating, xws li ntsuas kub (xws li tus pas ntsuas kub infrared lossis ib qho ntsuas kub kom paub tseeb tias qhov ntsuas kub preheating ua tau thiab yog tusyees faib. Piv txwv li, thaum vuam ib tug 20mm tuab siab {{5 5}} Lub zog Steel phaj nrog 70 xyoo yuav tsum yog tsawg kawg 75 hli nyob ib ncig ntawm Weld.
3.3 POS - cua sov thiab cua sov
Tom qab vuam, yog tias lub thickness ntawm workpiece yog loj lossis cov khoom muaj cov siab tawv, post} cua sov yuav tsum tau ua. Post - cua sov}} cua sov tuaj yeem txhawb kev sib txawv ntawm hydrogen hauv Weld thiab txo qis kev ntxhov siab. Cov lus tshaj tawm - cua sov kub feem ntau yog {}} kev deb, thiab lub sijhawm ua cua sov raws li lub zog ntawm cov haujlwm (feem ntau 1 teev ib 25 hli tuab). Piv txwv li, tom qab vuam ib 30mm tuab workpiece nrog 7018} cua sov muaj kev pheej hmoo ntawm hydrogen -}}} ua rau cov kab nrib pleb.
4. Yuav muaj dab tsi tshwm sim yog tias preheating yog tsis saib xyuas?
4.1 Weld Tsis Zoo
Kev tsis saib xyuas preheating ntawm 7018 vuam pas nrig tuaj yeem ua rau muaj kev sib cav sib ceg weld. Yog tias lub vuam pas nrig yog noo thiab tsis yog preheated (ci), pores thiab hydrogen- Cov kab nrib pleb yuav tshwm sim tom qab vuam. Rau cov hlau hauv paus, tsis txaus preheing yuav ua tsis tiav fusion, tsis txaus nkag, thiab cov kab nrib pleb hauv tshav kub}}}} kev kub ntxhov. Cov tsis zoo no yuav txo lub zog thiab nruj ntawm Weld, thiab muaj cov xwm txheej hnyav, yuav ua rau cov qauv welded kom tsis siv thaum siv.
4.2 Kev Nyab Xeeb Kev Nyab Xeeb
Hauv cov ntawv thov tseem ceeb xws li cov hlab ntsha siab thiab cov qauv choj, weld cracks tshwm sim los ntawm kev tsis muaj kev ua kom preheating yuav ua rau muaj kev nyab xeeb kev nyab xeeb. Piv txwv li, yog tias lub nkoj siab welded nrog 7018 vuam qws nrog 7018 vuam muaj cov kab nrib pleb
5. Xaus: Preheating yog cov kauj ruam tseem ceeb uas tsis tuaj yeem tsis quav ntsej
Hauv cov ntsiab lus, txawm tias 70/ Vuam Rods yuav tsum yog ua kom zoo xws li cov khoom siv tuab, ib puag ncig, thiab kev nyuaj siab. In most cases (especially for thick workpieces, high-strength steels, low-temperature environments, or high-restraint structures), preheating is not only a recommended operation but also a mandatory requirement to ensure weld quality and safety. Kho preheating ntawm lub vuam pas nrig (ci thiab cua sov- Cov hlau tawg, thiab xyuas kom cov tshuab weldabies ntawm welded sib koom tes. Yog li ntawd, Welders yuav tsum tsis quav ntsej cov kauj ruam preheating thaum siv 7018 vuam pas dej ua ntej tuaj yeem ua tiav.