Molybdenum na Chromium Molybdenum Okpomọkụ Na-eguzogide Steel Welding Electrode
R407
GB/T E6015-B3
AWS A5.5 E9015-B3
Description: R407 bụ pearlitic okpomọkụ na-eguzogide ígwè electrode na obere-hydrogen sodium mkpuchi nwere 2.5% Cr - 1% Mo. Jiri DCEP (direct current electrode positive) na ike welded na niile ọnọdụ.The weldment ga-preheated ka 200 ~ 300 Celsius C tupu ịgbado ọkụ.
Ngwa: A na-eji maka ịgbado ọkụ ọkụ dị elu na pipeline nke nrụgide na-arụ ọrụ na-arụ ọrụ n'okpuru 550 ° C, ígwè ọrụ kemịkalụ sịntetik, ngwa mgbawa mmanụ, wdg.
Ngwakọta kemịkalụ nke igwe weld (%):
| C | Mn | Si | Cr | Mo | S | P |
| 0.05 ~ 0.12 | 0,50 ~ 0,90 | ≤0.50 | 2.00 ~ 2.50 | 0.90 ~ 1.20 | ≤0.030 | ≤0.030 |
Njirimara nke igwe weld metal:
| Nwalee ihe | Ike ọdụdọ Mpa | Mpụta ike Mpa | Ogologo oge % | Uru mmetụta (J) Okpomọkụ nkịtị. |
| Ekwenyere | ≥590 | ≥490 | ≥15 | ≥47 |
| nwalere | 600 ~ 680 | ≥500 | 18-21 |
Mgbasa hydrogen ọdịnaya nke ọla edobere: ≤4.0mL/100g (glycerin usoro)
Nyocha x-ray: akara ule
Akwadoro ugbu a:
| Dayameta mkpanaka (mm) | 2.5 | 3.2 | 4.0 | 5.0 |
| Welding Ugbu a (A) | 60 ~ 90 | 90 ~ 120 | 140 ~ 180 | 170-210 |
Mara:
1. The electrode ga-abụọ maka 1 hour na 350 ℃ tupu ịgbado ọkụ ọrụ;
2. Ọ dị mkpa iji kpochaa nchara, ọnụ ọgụgụ mmanụ, mmiri na adịghị ọcha na akụkụ ịgbado ọkụ tupu ịgbado ọkụ.
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