Kev faib tawm:
AWS A5.1 E7018
ISO 2560-B-E4918A
GB/T 5117 E5018
Cov Qws Welding AWS E7018 yog cov hlau uas muaj hydrogen tsawg potassium hmoov coated carbon steel electrode. Cov hmoov hlau hauv cov txheej txheej ua rau cov nyiaj tso tawm ntau ntxiv. Nws muaj kev siv tau zoo heev uas tso cai rau nws kom muaj qhov ruaj khov arc, me ntsis spatter, tshem tawm slag yooj yim thiab welds hauv txhua qhov chaw. Cov hlau tso tawm muaj cov khoom siv kho tshuab zoo uas muab qhov kub thiab txias zoo heev.
Cov tshuaj lom neeg muaj pes tsawg leeg (%)
| Cov Tshuaj Lom Zem | C | Mn | Si | S | P |
| Tus nqi lav | ≤0.12 | ≤1.60 | ≤0.75 | ≤0.035 | ≤0.040 |
| Cov Txiaj Ntsig Dav Dav | 0.089 | 1.2 | 0.38 | 0.028 | 0.04 |
Cov khoom siv kho tshuab ntawm cov hlau uas tau tso rau hauv
| Khoom Siv Kuaj | Rm (N/mm2) | Rel (N/mm2) | Ib (%) | KV2(J) -30°C |
| Tus nqi lav | ≥490 | ≥400 | ≥20 | ≥27 |
| Cov Txiaj Ntsig Dav Dav | 515 | 430 | 32 | 156 |
Siv tam sim no (DC)
| Txoj kab uas hla | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
| Amperage | 60 ~ 100 | 80 ~ 140 | 110 ~ 210 | 160 ~ 230 |
Txoj Haujlwm Vuam:
PA, PB, PC, PD, PE, PF
Cov Lus Cim:
1. Lub electrode yuav tsum tau preheated ntawm qhov kub ntawm 350 ° C rau 1 teev. Preheat lub pas nrig thaum twg nws siv.
2. Cov khoom tsis huv xws li xeb, roj av thiab dej noo yuav tsum tau muab tshem tawm ntawm daim ntawv ua haujlwm.
3. Yuav tsum tau siv txoj hlua luv luv los vuam. Txoj kev vuam nqaim dua yog qhov zoo dua.
Ceeb Toom:
- Tlub electrode yuav tsum tau rov qhuav dua los ntawm 350℃-380℃rau 1 teev ua ntej vuam.
- Tua ntej vuam, roj, dej thiab lwm yam tsis huv ntawm thaj chaw vuam yuav tsum tau muab tshem tawm.
