Molybdenum thiab Chromium Molybdenum Thaum tshav kub kub Resistant Steel Vuam Electrode
R306 Fe
GB/T E5518-B2
AWS A5.5 E8018-B2
Nqe lus piav qhia: R306Fe yog pearlitic tshav kub-resistant steel electrode nrog hlau hmoov thiab tsis tshua muaj hydrogen potassium hom txheej uas muaj 1% Cr - 0.5% Mo. Ob leeg AC thiab DC tuaj yeem siv tau, thiab tuaj yeem txuas rau txhua txoj haujlwm nrog kev ua haujlwm luv luv.Lub preheating ntawm lub vuam thiab lub interlayer kub yog 160 ~ 250 ° C thaum vuam.
Daim ntawv thov: Siv rau vuam ntawm 1% Cr - 0.5% Mo pearlitic tshav kub-resistant steel (xws li 15CrMo), xws li boiler cua sov nto kav kav dej nrog ua hauj lwm kub hauv qab no 550 ° C, chav kav thiab siab hlab ntsha nrog ua hauj lwm kub hauv qab 520 ° C. , thiab lwm yam. Nws tuaj yeem siv rau vuam ntawm 30CrMnSi steel castings.
Tshuaj muaj pes tsawg leeg ntawm weld hlau (%):
| C | Mn | Si | Cr | Mo | S | P |
| 0.05 ~ 0.12 hli | 0.50 ~ 0.90 hli | ≤0.50 | 1.00-1.50 Nws | 0.40 ~ 0.65 hli | ≤ 0.030 | ≤ 0.030 |
Mechanical zog ntawm weld hlau:
| Cov khoom kuaj | Tensile zog Mpa | Yield zog Mpa | Elongation % | Tus nqi cuam tshuam (J) Ib txwm Temp. |
| lav | ≥540 | ≥440 | ≥47 | ≥ 27 |
| Kuaj | 550-640 ib | ≥450 | 20 ~ 28 | 105-150 ib |
Diffusion hydrogen ntsiab lus ntawm deposited hlau: ≤6.0mL / 100g (glycerin method)
X-ray kuaj: qib kuv
Pom zoo tam sim no:
| Qws txoj kab uas hla (mm) | 3.2 | 4.0 | 5.0 |
| Vuam tam sim no (A) | 100 ~ 130 hli | 140 ~ 180 ib | 180 ~ 210 ib |
Daim ntawv ceeb toom:
1. Cov electrode yuav tsum tau ci rau 1 teev ntawm ib ncig ntawm 350 ℃ ua ntej vuam ua haujlwm;
2. Nws yog ib qho tseem ceeb los ntxuav cov xeb, roj nplai, dej, thiab impurities ntawm vuam qhov chaw ua ntej vuam.
