Obere Okpomọkụ ÍgwèỊgbado ọkụElektrọd
W707Ni
GB/T E5515-C1
Nkọwa: W707Ni bụ elektrọd ígwè dị ala nke nwere Ni n'ime mkpuchi sodium dị ala nke nwere hydrogen. Jiri DCEP (elektrọd direct current positive) ma nwee ike ịgbado ya n'ọnọdụ niile. Metal ahụ e tinyere ka nwere ezigbo ike mmetụta na -70°C.
Ngwa: Ejiri ya maka ịgbado ígwè dị ala dịka 2.5Ni.
Ngwakọta kemịkalụ nke ígwè weld(%):
| C | Mn | Si | Ni | S | P |
| ≤0.12 | ≤1.25 | ≤0.60 | 2.00 ~ 2.75 | ≤0.020 | ≤0.025 |
Njirimara mekaniki nke igwe weld:
| Ihe nnwale | Ike ọdụdọ Mpa | Ike mmeputa Mpa | Ogologo % | Uru mmetụta (J) -70℃ |
| Ekwere nkwa | ≥540 | ≥440 | ≥17 | ≥27 |
Ọdịnaya hydrogen nke ígwè e tinyere n'ime ya: ≤6.0mL/100g (usoro glycerin) ma ọ bụ ≤10mL/100g (usoro mercury ma ọ bụ gas chromatography)
Nnyocha X-ray: ọkwa I
Ugbu a akwadoro:
| （mm) Dayameta mkpanaka | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 |
| (A) Ịgbado ọkụ ugbu a | 40 ~ 70 | 60 ~ 90 | 90 ~ 120 | 140 ~ 180 | 170 ~ 210 |
Rịba ama:
- A ga-emerịrị elektrọd ahụ maka otu awa na 350℃ tupu ịgbado ọkụ;
- Ọ dị mkpa ihicha ihe ndị ruru unyi, mmanụ, mmiri, na ihe ndị na-adịghị mma dị n'akụkụ ịgbado ọkụ tupu ịgbado ọkụ;
- Gbalịa iji obere ike ahịrị mgbe ị na-agbado ọkụ, ịgbado ọkụ ọtụtụ oyi akwa na ịgbado ọkụ ọtụtụ ngafe.
