Chamferingntawm cylindrical braze haum sib koom
Ntawm cov pob qij txha cylindrical hniav sib koom qhov twg cov yob yog ntxuav tes los ntawm sab nraud, chamfering nyob rau sab uas qhov muag teeb yog siv. Rooj 3 muab chamfer qhov ntev. Thaum ntxig cam yog siv, chamfering tsis tsim nyog.
