A252 GRADE 2 Chitoliro Chachitsulo cha Mapaipi Apansi Pansi Pansi

Kufotokozera Kwachidule:

Pankhani ya pansi pa nthaka unsembe chitoliro gasi, chimodzi mwa zinthu zofunika kwambiri ndi kusankha kuwotcherera njira kulumikiza mapaipi.Helical Submerged Arc Welding (HSAW) ndi njira yotchuka yowotcherera yomwe imagwiritsidwa ntchito kujowina chitoliro chachitsulo cha A252 Grade 2 pakuyika mapaipi apansi panthaka.Njirayi ili ndi maubwino angapo, kuphatikiza kuwotcherera kwambiri, kukhazikika bwino kwamapangidwe, komanso kudalirika kwanthawi yayitali.

Titumizireni imelo

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Pankhani ya pansi pa nthaka unsembe chitoliro gasi, chimodzi mwa zinthu zofunika kwambiri ndi kusankha kuwotcherera njira kulumikiza mapaipi.Helical Submerged Arc Welding(HSAW) ndi njira yotchuka yowotcherera yomwe imagwiritsidwa ntchito kujowina chitoliro chachitsulo cha A252 Grade 2 pakuyika mapaipi apansi panthaka.Njirayi ili ndi maubwino angapo, kuphatikiza kuwotcherera kwambiri, kukhazikika bwino kwamapangidwe, komanso kudalirika kwanthawi yayitali.

A252 Gulu 2 chitoliro chachitsuloidapangidwa makamaka kuti igwiritsidwe ntchito pazovuta monga kunyamula gasi.Mapaipiwa amadziwika chifukwa champhamvu zawo zolimba komanso kukana dzimbiri, zomwe zimawapangitsa kukhala abwino poyika mapaipi apansi panthaka.Komabe, njira yowotcherera ndiyofunikira kuti zitsimikizire kukhulupirika komanso moyo wautali wamapaipi achilengedwe.

Mechanical Property

	Gulu 1	Gulu 2	Gulu 3
Yield Point or yield strength, min, Mpa(PSI)	205 (30 000)	240 (35 000)	310 (45 000)
Tensile mphamvu, min, Mpa (PSI)	345 (50 000)	415 (60 000)	455 (66 0000)

Kusanthula Kwazinthu

Chitsulocho sichiyenera kukhala ndi phosphorous yoposa 0.050%.

Kusiyanasiyana Kololedwa Pakulemera Ndi Makulidwe

Utali uliwonse wa mulu wa chitoliro uyenera kuyezedwa padera ndipo kulemera kwake sikuyenera kusiyana kuposa 15% kapena 5% pansi pa kulemera kwake, kuwerengeredwa pogwiritsa ntchito kutalika kwake ndi kulemera kwake pa kutalika kwake.

Kuzungulira kwakunja sikuyenera kusiyanasiyana kupitilira ± 1% kuchokera m'mimba mwake mwadzina

Makulidwe a khoma nthawi iliyonse sayenera kupitirira 12.5% pansi pa makulidwe omwe atchulidwa

Utali

Kutalika kwachisawawa chimodzi: 16 mpaka 25ft (4.88 mpaka 7.62m)

Kutalika kwapawiri: kupitirira 25ft mpaka 35ft(7.62 mpaka 10.67m)

Utali wofanana: kusiyanasiyana kovomerezeka ±1in

Ubwino wina waukulu wa kuwotcherera kwa spiral submerged arc ndikokwanira kwake kowotcherera.Njirayi imathandizira kuti pakhale mitengo yotsika kwambiri, zomwe zimapangitsa kuwotcherera mwachangu komanso zokolola zambiri.Chifukwa chake, kukhazikitsa kwamapaipi a gasi apansi panthakaikhoza kumalizidwa munthawi yake, kuchepetsa kusokoneza ndi kutsika.

Kuphatikiza apo, HSAW ili ndi mawonekedwe abwino kwambiri.Njira yowotcherera imapanga mgwirizano wamphamvu komanso wosalekeza pakati pa mapaipi achitsulo a A252 Grade 2, kuonetsetsa kuti mapaipi amatha kupirira zovuta zakunja ndi zochitika zachilengedwe zomwe zimapezeka pansi pa nthaka.Kukhazikika kwadongosolo kumeneku ndikofunikira kwambiri pakunyamula gasi wachilengedwe motetezeka komanso modalirika mtunda wautali.

Kuphatikiza pakuchita bwino komanso kukhulupirika kwamapangidwe, kuwotcherera kwa spiral submerged arc kumapereka kudalirika kwanthawi yayitali.Malunjikidwe owotcherera omwe amapangidwa pogwiritsa ntchito ukadaulo uwu amapereka kukhazikika kwapadera komanso kukana dzimbiri, kuwonetsetsa kuti mapaipi a gasi apansi panthaka amakhalabe bwino pakapita nthawi.Kutalika kwa moyo umenewu n'kofunika kwambiri kuti kuchepetsa ndalama zokonzetsera ndi kukonza zomwe zimagwirizanitsidwa ndi mapaipi a gasi.

Ponseponse, kusankha njira yowotcherera yolumikizira mapaipi achitsulo a A252 Giredi 2 m'malo oyika mapaipi apansi panthaka kumatenga gawo lofunikira pachitetezo chonse komanso magwiridwe antchito amagetsi ogawa gasi.Kuwotcherera kwa Spiral submerged arc kumapereka maubwino ofunikira pakuwotcherera, kukhulupirika kwamapangidwe komanso kudalirika kwanthawi yayitali, ndikupangitsa kuti ikhale yabwino kuwonetsetsa kuti mapaipi apansi panthaka akuyenda bwino.

Mwachidule, kufunikira kwa chitoliro chachitsulo cha A252 Grade 2 spiral spiral arc kuwotcherera m'mapaipi apansi panthaka sikunganyalanyazidwe.Njira yowotcherera iyi imakhala ndi maubwino ambiri, kuphatikiza kuwotcherera kwambiri, kukhazikika bwino kwamapangidwe, komanso kudalirika kwanthawi yayitali.Posankha HSAW welded A252 Giredi 2 chitoliro chachitsulo, oyika mapaipi a gasi amatha kuwonetsetsa kuyenda kwa gasi wodalirika komanso wodalirika kwa zaka zikubwerazi.