1. Thin Gauges (1.6–6 mm): Weldability zoo heev
Tsis tas yuav tsum tau ua kom sov ua ntej, ua tsaug rau cov cua kub qis thiab cua sov me me- cuam tshuam cheeb tsam (HAZ).
Cov txheej txheem pom zoo: GMAW/MIG thiab FCAW (kom ceev ceev, ceev ceev tswj kom tsis txhob hlawv- dhau); SMAW yog siv tau nrog kev ua haujlwm txawj.
Tsuas yog qhov tsawg kawg nkaus yuav tsum tau npaj; tsis muaj ncej-weld kho cua sov xav tau (weld distortion yog qhov kev txhawj xeeb loj).
2. Nruab nrab Gauges (6–25 mm): Zoo Weldability
Preheating yog xaiv tau (80–120 degree) tsuas yog rau cov mob khaub thuas (tsawg dua lossis sib npaug li 5 degree) lossis nruj sib koom ua ke -ups, tiv thaiv hydrogen-induced cracking (HIC).
Cov txheej txheem pom zoo: SMAW, GMAW, thiab FCAW yog txhua yam tsim nyog (GMAW/FCAW rau kev tsim khoom, SMAW rau ntawm - qhov chaw vuam).
Lub teeb weld hlaws sib tsoo tuaj yeem txhim kho patina uniformity; tsis xav tau kev kho kev ntxhov siab.
3. Thick Gauges (25–100 mm): Txo Weldability (Strict Control Xav Tau)
Yuav tsum preheating (100–150°C for 25–50 mm; 150–200°C for >50 hli) kom txias txias, tsis txhob brittle microstructures, thiab txo HIC kev pheej hmoo.
Cov txheej txheem pom zoo: SMAW (zoo tagnrho rau ntau- hla vuam thiab tswj cua sov); oxy- roj vuam raug zam.
Cov pob qij txha tseem ceeb yuav xav tau kev kho cua sov (550-650 degree); weld / HAZ sib tsoo yog xav tau rau patina uniformity thiab txo kev ntxhov siab.
4. Universal Vuam Txoj Cai rau Txhua Qhov Thicknesses
Ib txwm siv cov huab cua huab cua- cov khoom sib xyaw ua ke (piv txwv li, E7018-W, ER70S-W) los tiv thaiv corrosion hauv welds.
Ua tib zoo ntxuav thaj tsam weld (20 hli ntawm txhua sab) kom tshem tawm cov kab mob thiab tiv thaiv porosity.
Tswj cov khoom siv hluav taws xob: tsis tshua muaj cua sov rau cov ntsuas ntsuas nyias (tiv thaiv kev kub hnyiab- dhau ntawm) thiab tswj ntau- kis cua sov rau cov ntsuas tuab (tswj cov nqi cua txias).
