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Monga gwero lamphamvu lamphamvu, mphamvu yamphepo yakula mofulumira m’zaka zaposachedwapa. Popanga zida zamagetsi zamagetsi, mbale zachitsulo zomwe zimagwiritsidwa ntchito zikuchulukira, ndipo zina zapitilira 100mm, zomwe zimapatsa patsogolo zofunikira zowotcherera. Pakali pano, Q355 kapena DH36 chimagwiritsidwa ntchito zida mphamvu mphepo, ndi kuwotcherera njira zambiri kusankha flux cored waya mpweya chitetezo kuwotcherera (FCAW) ndi kumizidwa arc kuwotcherera (SAW).
Popanga nsanja yopangira makina opangira magetsi, ming'alu yabwino imatha kuchitika pamzere wophatikizika kapena malo omwe akhudzidwa ndi kutentha pambuyo pa kuwotcherera kwa chimango cha chitseko, ndipo kukhuthala kwa mbale yachitsulo, ming'alu imachulukirachulukira. The chifukwa amayamba ndi mabuku superposition wa nkhawa, kuwotcherera kutentha, ndondomeko kuwotcherera, hydrogen aggregation, etc., kotero ziyenera kuthetsedwa kuchokera maulalo ambiri monga kuwotcherera chuma, ndondomeko kuwotcherera, kuwotcherera kutentha, ndondomeko ulamuliro, etc.
1, Kusankhidwa kwa kuwotcherera consumables
Chifukwa gawo lowotcherera ndilofunika kwambiri, ndikofunikira kusankha zida zowotcherera zomwe zili ndi zonyansa zochepa, kulimba bwino komanso kukana bwino kwa ming'alu, monga GFL-71Ni yathu (GB/T10045 T494T1-1 C1 A, AWS A5.20 E71T-1C). -J).
Zomwe zimachitika pagulu la GFL-71Ni:
● Chinthu chochepa kwambiri cha zinthu zonyansa, P + S ≤0.012% (wt%) ikhoza kulamulidwa.
● Mapulasitiki abwino kwambiri a elongation, elongation pambuyo popuma≥27%.
● Kulimba kwamphamvu kwambiri, -40 °C kukhudza mphamvu ya mayamwidwe ≥ kuposa 100J.
● Kuchita bwino kwa CTOD.
● Kuthira madzi wa hydrogen H5 kapena kuchepera.
2, kuwotcherera ndondomeko ulamuliro
(1) kuwotcherera preheating ndi inter-channel kutentha kulamulira
Ponena za miyezo yoyenera komanso zambiri zam'mbuyomu, tikulimbikitsidwa kusankha kutentha kwa preheating ndi inter-channel:
● 20 ~ 38mm wokhuthala, kutentha kwa preheat kuposa 75 °C.
● 38 ~ 65mm wandiweyani, kutentha kwa preheating kuposa 100 °C.
● Kukhuthala kopitilira 65mm, kutentha koyambirira kupitilira 125°C.
M'nyengo yozizira, kutentha kumafunika kuganiziridwa, choncho kuyenera kusinthidwa ndi 30 ~ 50 ° C pamaziko awa.
(2) The workpiece iyenera kutenthedwa mosalekeza panthawi yowotcherera kuti ikhale ndi kutentha kokwanira kwapakati panjira
● 20 ~ 38mm wandiweyani, tikulimbikitsidwa kulamulira kutentha pakati pa njira 130 ~ 160 °C.
● 38 ~ 65mm wandiweyani, tikulimbikitsidwa kulamulira kutentha pakati pa njira 150 ~ 180 °C.
● Kuchuluka kwa 65mm, ndibwino kuti muzitha kutentha pakati pa 170 ~ 200 °C.
Chipangizo choyezera kutentha ndi bwino kugwiritsa ntchito zipangizo zoyezera kutentha, kapena cholembera chapadera choyezera kutentha.
3, kuwotcherera mfundo ulamuliro
| Welding waya Diameter | Zofunikira zovomerezeka | Kuyika kwa kutentha |
| 1.2 mm | 220-280A/26-30V 300mm / mphindi | 1.1-2.0KJ/mm |
| 1.4 mm | 230-300A/26-32V 300mm / mphindi | 1.1-2.0KJ/mm |
Zindikirani 1: Zamakono zazing'ono ziyenera kusankhidwa kuti ziwotchere pansi, ndipo chivundikiro chodzaza chikhoza kukhala chokulirapo, koma sichiyenera kupitirira mtengo wovomerezeka.
Zindikirani 2: Kukula kwa mkanda umodzi wowotcherera sikuyenera kupitirira 20mm, ndipo mkanda wowotcherera uyenera kukonzedwa molingana ndi momwe zilili. Pamene groove ndi yotakata, kuwotcherera kwa multipass-pass kuyenera kugwiritsidwa ntchito, zomwe zimapindulitsa kuyeretsa mbewu.
4. Kuwotcherera ndondomeko kulamulira
Ndikwabwino kugwiritsa ntchito kuwotcherera kwamitundu yambiri kwa ma welds a annular, omwe angachepetse kwambiri kupsinjika kwa shrinkage, komanso kuwotcherera kofanana kwa anthu 4 ndikwabwino kuposa kuwotcherera kwa 2-munthu symmetrical.
5, Kuchotsa haidrojeni pakati pa kuwotcherera
Kuchotsa haidrojeni m'chigawo chapakati ndi muyeso womwe umatengedwa motsutsana ndi kudzikundikira kwa haidrojeni wotayika mu kuwotcherera kwa mbale zokhuthala. Kafukufukuyu akuwonetsa kuti zotsatira zake ndi zodziwikiratu pama mbale akulu akulu kuposa 70mm. Njira yogwirira ntchito ili motere:
● Siyani kuwotcherera pafupifupi 2/3 ya mkanda wonsewo.
● Dehydrogenation 250-300℃×2~3h.
● Pitirizani kuwotcherera mpaka kumaliza kuchotsa haidrojeni.
● Mukawotcherera, phimbani ndi thonje lotsekereza ndipo pang'onopang'ono muziziziritsa mpaka kutentha.
6. Nkhani zina zofunika kuziganizira
● Mabelu asanayambe kuwotcherera ayenera kukhala aukhondo.
● Kugwedeza manja kuyenera kupeŵedwa mmene ndingathere. Ndi bwino kugwiritsa ntchito kuwotcherera molunjika mkanda ndi Mipikisano wosanjikiza Mipikisano chiphaso kuwotcherera.
● Kutalika kwa waya wowotcherera pansi sikuyenera kupitirira 25mm. Ngati pobowo ndi wozama kwambiri, chonde sankhani kabowo kakang'ono.
● Mpweya wa kaboni ukatsukidwa, mtundu wachitsulo uyenera kupukutidwa musanapitirize kuwotcherera.
Tili ndi zitsanzo zambiri zogwiritsira ntchito zida zowotcherera zomwe zimagwiritsidwa ntchito pamakampani opanga mphamvu zamagetsi, talandiridwa kuti mufunse!
Nthawi yotumiza: Nov-24-2022