Molybdenum thiab Chromium Molybdenum Thaum tshav kub kub Resistant SteelVuamHluav taws xob
R107
GB/T E5015-A1
AWS A5.5 E7015-A1
Nqe lus piav qhia: R107 yog pearlitic tshav kub-resistant steel electrode nrog ib tug tsawg-hydrogen sodium txheej uas muaj 0.5% Mo. Siv DCEP (direct tam sim no electrode zoo) thiab muaj peev xwm welded nyob rau hauv tag nrho cov hauj lwm.The weldment yuav tsum tau preheated rau 90 ~ 110 ℃ ua ntej vuam .
Daim ntawv thov: Nws yog siv rau vuam boiler kav nrog ua hauj lwm kub hauv qab 510 ° C (xws li 15Mo, thiab lwm yam), thiab kuj yuav siv tau rau vuam dav dav low-alloy high-strength steel.
Tshuaj muaj pes tsawg leeg ntawm weld hlau (%):
| C | Mn | Si | Mo | S | P |
| ≤0.12 | 0.50-0.90 Nws | ≤0.50 | 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 | ≥490 | ≥390 | ≥ 22 | ≥47 |
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) | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 |
| VuamTam sim no (A) | 40 ~ 70 | 60 ~ 90 | 90 ~ 120 hli | 140 ~ 180 ib | 170-210 ib |
Daim ntawv ceeb toom:
1. Cov electrode yuav tsum tau ci rau 1 teev 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.
