枣庄欧标角钢70*70*7的可焊性

冶炼资讯：
为了降低磨矿成本和防止产生过磨、泥化现象，试验工艺流程采用阶段磨矿、弱磁选一强磁选工艺流程，原矿一段磨矿至-.74mm占75%，采用1次弱磁选，1次强磁选抛尾，1次弱磁选，1次强磁选粗精矿再磨矿至-.37mm后，进行2次弱磁选，2次强磁选抛尾。根据此工艺试验选用的弱磁选机为普通磁感应强度.16T磁选机，强磁选机采用SLon立环脉动高梯度磁选机，一段磨选的试验结果见表4。从表4可见，原矿采用一段磨矿、1次弱磁选、1次强磁选作业抛尾，综合铁精矿品位可达到44.2%，产率59.16%，回收率85.89%，可抛去4.84%的尾矿，大幅减少二段再磨矿量，抛尾效果较好。
欧标角钢钢执行标准：EN标准
欧标角钢规格型号表
品 名 规格型号 材质 米重/公斤
欧标角钢 30*30*3 S235/275/355/JR/J0/J2 1.36 
欧标角钢 40*40*4 S235/275/355/JR/J0/J2 2.42 
欧标角钢 40*40*5 S235/275/355/JR/J0/J2 2.97 
欧标角钢 50*50*4 S235/275/355/JR/J0/J2 3.06 
欧标角钢 50*50*5 S235/275/355/JR/J0/J2 3.77 
欧标角钢 50*50*6 S235/275/355/JR/J0/J2 4.47 
欧标角钢 60*60*4 S235/275/355/JR/J0/J2 3.70 
欧标角钢 60*60*5 S235/275/355/JR/J0/J2 4.57 
欧标角钢 60*60*6 S235/275/355/JR/J0/J2 5.42
欧标角钢 63*63*6 S235/275/355/JR/J0/J2 5.72
欧标角钢 65*65*4 S235/275/355/JR/J0/J2 4.02
欧标角钢 65*65*5 S235/275/355/JR/J0/J2 4.97
欧标角钢 65*65*8 S235/275/355/JR/J0/J2 7.73
欧标角钢 70*70*6 S235/275/355/JR/J0/J2 6.38
欧标角钢 70*70*7 S235/275/355/JR/J0/J2 7.38
欧标角钢 70*70*8 S235/275/355/JR/J0/J2 8.37
欧标角钢 75*75*5 S235/275/355/JR/J0/J2 5.76

欧标角钢 75*75*6 S235/275/355/JR/J0/J2 6.85
欧标角钢 75*75*7 S235/275/355/JR/J0/J2 7.93
欧标角钢 80*80*5 S235/275/355/JR/J0/J2 6.17
欧标角钢 80*80*6 S235/275/355/JR/J0/J2 7.34
欧标角钢 80*80*7 S235/275/355/JR/J0/J2 7.49
欧标角钢 80*80*8 S235/275/355/JR/J0/J2 9.63
欧标角钢 90*90*7 S235/275/355/JR/J0/J2 9.61
欧标角钢 90*90*8 S235/275/355/JR/J0/J2 10.9
欧标角钢 90*90*9 S235/275/355/JR/J0/J2 12.2
欧标角钢 90*90*10 S235/275/355/JR/J0/J2 13.4
欧标角钢 100*100*8 S235/275/355/JR/J0/J2 12.2
欧标角钢 100*100*9 S235/275/355/JR/J0/J2 13.6
欧标角钢 S235/275/355/JR/J0/J2 15
欧标角钢 S235/275/355/JR/J0/J2 16.4
欧标角钢 110*110*9 S235/275/355/JR/J0/J2 15
欧标角钢 S235/275/355/JR/J0/J2 16.6
欧标角钢 S235/275/355/JR/J0/J2 18.2
欧标角钢 S235/275/355/JR/J0/J2 19.7
欧标角钢 120*120*8 S235/275/355/JR/J0/J2 14.7
欧标角钢 120*120*9 S235/275/355/JR/J0/J2 16.5
欧标角钢 S235/275/355/JR/J0/J2 18.2
欧标角钢 S235/275/355/JR/J0/J2 19.9
欧标角钢 S235/275/355/JR/J0/J2 21.6
欧标角钢 S235/275/355/JR/J0/J2 19.8
欧标角钢 S235/275/355/JR/J0/J2 21.4
欧标角钢 S235/275/355/JR/J0/J2 23
欧标角钢 S235/275/355/JR/J0/J2 33.9
欧标角钢 S235/275/355/JR/J0/J2 35.7
欧标角钢 200*200*13S235/275/355/JR/J0/J2 39.8
欧标角钢 250*250*17 S235/275/355/JR/J0/J2 64.4

欧标角钢冶金工作者今后的努力方向是研制度相当高的、可焊性良好的、冷脆温度较低的钢种。用少量的硼、钼、钒、铌、钛等元素进行严格比例的单一合金化或多元合金化时，可制成新型的钢种。

枣庄欧标角钢70*70*7钢铁及合金化学分析方法