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Dị ka isi iyi ike dị ọcha, ike ikuku amalitela ngwa ngwa n'afọ ndị na-adịbeghị anya. Site na mmepe nke akụrụngwa ikuku, efere ígwè eji eme ihe na-abawanye ụba ma na-ebuwanye ibu, ụfọdụ agafeela 100mm, nke na-ebute ihe ndị dị elu chọrọ maka ịgbado ọkụ. Ka ọ dị ugbu a, a na-eji Q355 ma ọ bụ DH36 eme ihe na akụrụngwa ikuku, na ụzọ ịgbado ọkụ na-ahọrọkarị ịgbado ọkụ ikuku ikuku ikuku (FCAW) na ịgbado ọkụ arc (SAW).
Na usoro nke ikuku turbine tower n'ichepụta, ezi cracks na-adịkarị mfe ime na fusion akara ma ọ bụ okpomọkụ emetụta mpaghara ọnọdụ mgbe ịgbado ọkụ nke ọnụ ụzọ, na thicker na ígwè efere, ukwuu mgbape ọchịchọ. Ihe kpatara ya bụ ihe mgbagwoju anya nke nrụgide, okpomọkụ ịgbado ọkụ, usoro ịgbado ọkụ, hydrogen aggregation, wdg, ya mere a ga-edozi ya site na ọtụtụ njikọ dị ka ihe ịgbado ọkụ, usoro ịgbado ọkụ, okpomọkụ ịgbado ọkụ, njikwa usoro, wdg.
1. Nhọrọ nke ịgbado ọkụ consumables
N'ihi na akụkụ ịgbado ọkụ dị ezigbo mkpa, ọ dị mkpa na-ahọrọ ịgbado ọkụ ihe na ala adịghị ọcha ọdịnaya, ezi ike na ezi mgbape na-eguzogide, dị ka anyị GFL-71Ni (GB/T10045 T494T1-1 C1 A, AWS A5.20 E71T-1C). -J).
Arụmọrụ nke ngwaahịa GFL-71Ni:
● Ọdịnaya adịghị ọcha dị ala, P+S ≤0.012% (wt%) nwere ike ịchịkwa.
● Ọmarịcha elongation plasticity, elongation mgbe ezumike≥27%.
● Mmetụta siri ike dị oke mma, -40 °C mmetụta nnabata ike ≥ karịa 100J.
● Ọmarịcha arụmọrụ CTOD.
● Mgbasa hydrogen ọdịnaya H5 ma ọ bụ obere.
2. Welding usoro akara
(1) Welding preheating na inter-channel okpomọkụ akara
N'ịtụ aka na ụkpụrụ ndị dị mkpa na ahụmịhe gara aga, a na-atụ aro ka ịhọrọ ikpo ọkụ na okpomọkụ nke ọwa:
● 20 ~ 38mm oké, preheating okpomọkụ n'elu 75 °C.
● 38 ~ 65mm oké, preheating okpomọkụ karịa 100 Celsius.
● Ihe karịrị 65mm gbara ọkpụrụkpụ, okpomọkụ na-ekpo ọkụ karịa 125°C.
N'oge oyi, ọ dị mkpa ka a tụlee ọnwụ okpomọkụ, ya mere a ga-edozi ya site na 30 ~ 50 Celsius na ndabere a.
(2) The workpiece kwesịrị ịnọgide na-ekpo ọkụ n'oge ịgbado ọkụ usoro ịnọgide na-enwe zuru ezu n'etiti ọwa okpomọkụ
● 20 ~ 38mm oké, a na-atụ aro ka ịchịkwa okpomọkụ n'etiti ọwa 130 ~ 160 Celsius.
● 38 ~ 65mm oké, a na-atụ aro ka ịchịkwa okpomọkụ n'etiti ọwa 150 ~ 180 Celsius C.
● Karịrị 65mm oké, a na-atụ aro ka ịchịkwa okpomọkụ n'etiti ọwa 170 ~ 200 Celsius.
Ngwaọrụ na-atụ ọnọdụ okpomọkụ kacha mma iji ngwa nleta ọnọdụ okpomọkụ kọntaktị, ma ọ bụ mkpịsị odee okpomọkụ pụrụ iche.
3, Welding nkọwa njikwa
| Ogologo waya ịgbado ọkụ | Oke akwadoro | Ntinye ọkụ |
| 1.2 mm | 220-280A/26-30V 300mm/min | 1.1-2.0KJ/mm |
| 1.4 mm | 230-300A/26-32V 300mm/min | 1.1-2.0KJ/mm |
Rịba ama 1: Ekwesịrị ịhọrọ obere ugbu a maka ịgbado ọkụ ala, na mkpuchi ndochi nwere ike ibu nke ọma, mana ekwesịghị gafere uru akwadoro.
Rịba ama 2: Obosara otu bead weld ekwesịghị ịfe 20mm, a ga-ahazikwa bead weld dịka ọnọdụ dị adị. Mgbe oghere ahụ dị obosara, a ga-eji ịgbado ọkụ multi-pass, nke bara uru iji nụchaa ọka.
4. Welding usoro akara
Ọ kachasị mma iji ịgbado ọkụ nke ọtụtụ mmadụ maka welds afọ, nke nwere ike ibelata nrụgide shrinkage nke ukwuu, na ịgbado ọkụ nke mmadụ 4 dị mma karịa ịgbado ọkụ nke mmadụ abụọ.
5, Hydrogen mwepụ n'etiti ịgbado ọkụ
Mwepụ hydrogen na mpaghara etiti bụ ihe e mere megide mkpokọta hydrogen na-ekesa na ịgbado ọkụ nke efere ndị gbara ọkpụrụkpụ. Nchoputa a gosiputara na mmetụta a doro anya maka nnukwu efere buru ibu karịa 70mm. Usoro ọrụ bụ nke a:
● Kwụsị ịgbado ihe dị ka 2/3 nke cha cha dum.
● Dehydrogenation 250-300 ℃ × 2 ~ 3h.
● Gaa n'ihu na-agbado ruo mgbe mkpochapụ hydrogen gwụchara.
● Mgbe ịgbado ọkụ, kpuchie na mkpuchi mkpuchi ma jiri nwayọọ nwayọọ dị jụụ ruo n'ime ụlọ.
6. Ihe ndị ọzọ chọrọ nlebara anya
● Tupu ịgbado ọkụ, bevel ndị ahụ kwesịrị ịdị ọcha ma dị ọcha.
● E kwesịrị izere mmegharị ahụ́ ka o kwere mee. A na-atụ aro ka iji bead ịgbado ọkụ kwụ ọtọ na ịgbado ọkụ multi-layer multi-pass.
● Ogologo ndọtị nke waya ịgbado ọkụ nke ala ekwesịghị gafere 25mm. Ọ bụrụ na oghere ahụ dị omimi, biko họrọ nozulu conical.
● Mgbe emechara ihe carbon planer, ụcha ígwè ahụ aghaghị ịchacha tupu ọ gaa n'ihu ịgbado ọkụ.
Anyị nwere ọnụ ọgụgụ dị ukwuu nke ngwa ihe atụ nke ịgbado ọkụ consumables eji na ifufe ike ụlọ ọrụ, welcome ịjụ!
Oge nzipu: Nov-24-2022