Cold Anapanga Welded Structural For Fire Pipe Line
In ozizira anapanga welded structuralntchito, ozungulira msoko welded chitoliro n'kofunika kwambiri kumanga cholimba ndi odalirika nyumba.Mapaipiwa amapangidwa kuchokera kuzitsulo zapamwamba kwambiri ndipo amatha kupirira katundu wolemera, kuwapanga kukhala abwino kwa milatho, nyumba ndi ntchito zina zomangamanga.Mechanical Property
kalasi yachitsulo | mphamvu zochepa zokolola | Kulimba kwamakokedwe | Kutalikira pang'ono | Mphamvu zochepa zomwe zimakhudzidwa | ||||
Mpa | % | J | ||||||
Makulidwe odziwika | Makulidwe odziwika | Makulidwe odziwika | pa kutentha kwa mayeso a | |||||
mm | mm | mm | ||||||
<16 | >16≤40 | <3 | ≥3≤40 | ≤40 | -20 ℃ | 0 ℃ | 20 ℃ | |
Chithunzi cha S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
Chithunzi cha S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
Chithunzi cha S275J2H | 27 | - | - | |||||
Chithunzi cha S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
Chithunzi cha S355J2H | 27 | - | - | |||||
Chithunzi cha S355K2H | 40 | - | - |
Chemical Composition
Chitsulo kalasi | Mtundu wa de-oxidation a | % ndi misa, pazipita | ||||||
Dzina lachitsulo | Nambala yachitsulo | C | C | Si | Mn | P | S | Nb |
Chithunzi cha S235JRH | 1.0039 | FF | 0,17 | - | 1,40 | 0,040 | 0,040 | 0.009 |
Chithunzi cha S275J0H | 1.0149 | FF | 0,20 | - | 1,50 | 0,035 | 0,035 | 0,009 |
Chithunzi cha S275J2H | 1.0138 | FF | 0,20 | - | 1,50 | 0,030 | 0,030 | - |
Chithunzi cha S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
Chithunzi cha S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
Chithunzi cha S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
a.Njira ya deoxidation imayikidwa motere: | ||||||||
FF: Chitsulo chopha kwathunthu chokhala ndi zinthu zomangira za nayitrogeni mu kuchuluka kokwanira kumanga nayitrogeni yomwe ilipo (mwachitsanzo min. 0,020 % okwana Al kapena 0,015 % sungunuka Al). | ||||||||
b.Kuchuluka kwa nayitrogeni sikugwira ntchito ngati mankhwala akuwonetsa kuchuluka kwa Al zomwe zili 0,020 % ndi chiŵerengero chochepa cha Al/N cha 2:1, kapena ngati zinthu zina zokwanira za N-binding zilipo.Zinthu zomangiriza za N zidzalembedwa mu Inspection Document. |
Komanso, mu chitetezo motomapaipi, kugwiritsa ntchito mapaipi opangidwa ndi spiral seam welded ndikofunikira kuti zitsimikizire chitetezo ndi kudalirika kwadongosolo.Mapaipiwa amapangidwa mwapadera kuti athe kulimbana ndi kutentha kwakukulu ndi kupanikizika ndipo ndi oyenera kugwiritsidwa ntchito mu machitidwe otetezera moto.Kumanga kotsekera kwa chitoliro cha spiral seam kumatsimikizira kuti sikungadutse komanso kumasunga umphumphu ngakhale pansi pa zovuta kwambiri, zomwe zimapangitsa kuti zikhale zofunikira kwambiri pachitetezo cha moto ndi machitidwe oletsa moto.
Mmodzi mwa ubwino waukulu waozungulira msoko welded chitolirondi kusinthasintha kwake komanso kusinthasintha kwa ntchito zosiyanasiyana.Mapaipiwa amatha kupangidwa mosiyanasiyana ma diameter ndi makulidwe kuti akwaniritse zofunikira za polojekiti.Kuphatikiza apo, amatha kuphimbidwa ndi zida zodzitetezera kuti apititse patsogolo kukana kwa dzimbiri ndikukulitsa moyo wawo wautumiki, kuwapangitsa kukhala oyenera kugwiritsidwa ntchito m'malo osiyanasiyana.
Spiral seam welded mapaipi ali ndi maubwino omveka pankhani yoyika ndi kukonza.Ndizopepuka komanso zosinthika, zomwe zimapangitsa kuti zikhale zosavuta kuzinyamulira ndi kuzigwira, kuchepetsa nthawi yoyika komanso ndalama zogwirira ntchito.Kuonjezera apo, kutalika kwake kwautali, kosalekeza kumachepetsa kufunikira kwa maulumikizidwe owonjezera, kuchepetsa chiopsezo cha kutayikira ndikuwonetsetsa kuti paipi yodalirika komanso yodalirika.
Pomaliza, ozungulira msoko welded chitoliro ndi gawo lofunika m'mafakitale osiyanasiyana, makamaka ozizira anapanga welded nyumba ndichingwe chozimitsa motomapulogalamu.Kumanga kwake kolimba, magwiridwe antchito apamwamba komanso kusinthika kumapangitsa kukhala chisankho choyamba kwa mainjiniya, makontrakitala ndi oyang'anira polojekiti.Kaya mukumanga nyumba zolimba kapena kupanga njira zotetezera komanso zodalirika zotetezera moto, mapaipi ozungulira ozungulira ndi njira yofunikira kwambiri pazosowa zamakono ndi mafakitale.