With the FCW of 308L super low carbon stainless steel sheath manufactured by Tianjin Sainteagle Co.Ltd., the carbon increasing problem has been studied in this paper.

• 采用天津三英焊业有限责任公司首次研制成功的碳钢钢带308L超低碳不锈钢药芯焊丝,围绕药芯焊丝的增碳问题做了大量试验。