1. Npuas
Npuas feem ntau tshwm sim nyob rau hauv nruab nrab ntawm lub weld hlaws, thiab hydrogen tseem muab zais rau hauv cov hlau weld nyob rau hauv daim ntawv ntawm npuas. Qhov laj thawj tseem ceeb yog qhov vuam hlau thiab flux muaj cov dej noo ntawm qhov chaw thiab siv ncaj qha yam tsis muaj ziab. Tsis tas li ntawd, qhov tam sim no kuj siab heev thaum lub sij hawm vuam txheej txheem. Me me, qhov vuam ceev nrawm dhau, thiab qhov no kuj tseem yuav tshwm sim yog tias cov hlau khov kho nrawm dua.

2. Txom nyem
Undercut yog V-shaped zawj tshwm rau ntawm ntug ntawm lub vuam raws kab nruab nrab ntawm qhov vuam. Qhov laj thawj tseem ceeb yog qhov vuam ceev, tam sim no, qhov hluav taws xob, thiab lwm yam tsis tsim nyog. Ntawm lawv, qhov vuam ceev yog siab dhau thiab qhov tam sim no tsis tsim nyog. Nws yog ib qho yooj yim ua rau undercut tsis xws luag.

3. Kub tawg
Qhov ua rau kub tawg yog thaum lub weld kev nyuaj siab heev, los yog thaum lub sij hawm SI silicon nyob rau hauv lub weld hlau yog siab heev, muaj lwm yam sulfur cracking, lub dawb paug yog ib tug phaj nrog ib tug muaj zog sulfur segregation cheeb tsam (tam sim no. soft boiling Steel), kab nrib pleb tshwm sim los ntawm sulfides nkag mus rau hauv lub vuam hlau thaum lub sij hawm vuam txheej txheem.

4. Tsis txaus vuam nkag
Cov hlau sib tshooj ntawm cov welds sab hauv thiab sab nrauv tsis txaus, thiab qee zaum qhov vuam tsis nkag mus.
Txoj kev suav rau welded steel yeeb nkab: (sab nraud txoj kab uas hla - phab ntsa thickness) * phab ntsa thickness * 0.02466 = hnyav ib 'meter' ntawm welded steel yeeb nkab {kg
Galvanized steel yeeb nkab suav: (sab nraud txoj kab uas hla - phab ntsa thickness) * phab ntsa thickness * 0.02466 * 1.06 = qhov hnyav ntawm welded steel yeeb nkab ib 'meter' {kg