Sunday, September 11, 2022
问题:普碳钢中,Mn/Si控制在()左右,可得到完全液态的脱氧产物,以改善钢水流动性。A、2.5B、3.0C、3.5...
Monday, April 1, 2024
问题:铸坯表面夹杂缺陷的发生率,与浮渣的组成有密切关系。...
Sunday, September 11, 2022
问题:按连铸机生产铸坯的外形分类有方坯、()、异形坯连铸机等。...
Monday, September 12, 2022
Sunday, September 11, 2022
Monday, September 12, 2022
Sunday, September 11, 2022
问题:适当降低过热度的浇注温度,可缩小铸坯中的柱状晶区,扩大等轴晶区。...
Monday, September 12, 2022
Monday, September 12, 2022
问题:钢中的氢含量降低钢的强度、塑性、冲击韧性,称为()。...
Monday, September 12, 2022
问题:钢水由液态转变成固态需满足的条件是一定的过冷度和结晶核心。...
Monday, September 12, 2022
问题:提高中间包连浇炉数是提高铸机台时产量的唯一途径。...
Saturday, January 20, 2024
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
问题:结晶器振幅是指结晶器振动时,从最高点到()的运行距离。...
Sunday, October 22, 2023
Wednesday, December 6, 2023
Monday, September 12, 2022
Saturday, September 30, 2023
问题:铸坯的液芯长度=(铸坯厚度2/凝固系数)2拉速。...
Sunday, September 11, 2022