■■■产品2（普通粉体）规格SiO2CaOFe2O3LOSSMgOAl2O3SP白度mesh≥≥≤≤≤≤≤≤≥8045-5638-430.24.5-5.50.80.80.0010.0018012045-5638-430.24.5-5.50.80.80.0010.0018020045-5638-430.24.5-5.50.80.80.0010.0018320049-5144-460.21-1.60.80.80.0010.0018532549-5144-460.21.6-2.50.80.80.0010.0018540049-5142-440.230.80.80.0010.00188600-70050450.220.80.80.0010.00190800-100050450.220.80.80.0010.00191125050450.220.80.80.0010.00193250050450.220.80.80.0010.00193电焊条用硅灰石作电焊条药皮配料，能起助熔和造渣添加剂作用，***焊接时放电，减少飞溅，提高熔渣流动性，使焊缝成型整洁美观，增强机械强度。电焊条对硅灰石精矿质量的一般要求：SiO245%～55%，CaO35%～45%，MgO小于或等于0.8%，S小于或等于0.03%，P小于0.03%。)