论文部分内容阅读
1990年3月10日,由上海电气联合公司主持,在上海锅炉厂召开了R317L焊条技术鉴定会。该焊条可不预热进行铬钼钢、耐热钢(主要是12CrMoV)
March 10, 1990, chaired by the Shanghai Electric United Co., Ltd. held in Shanghai Boiler Factory R317L welding technology appraisal. The electrode can be preheated chromium molybdenum steel, heat-resistant steel (mainly 12CrMoV)