1)soft reduction轻压下
1.Application and investigation of soft reduction technique in continuous casting;轻压下技术在连铸中的应用及研究
2.FEM simulation for soft reduction in bloom casting;大方坯轻压下过程有限元法模拟研究
3.Prediction of the position for soft reduction in heavy rail bloom continuous caster;重轨钢大方坯轻压下位置的预报
英文短句/例句
1.Study on Soft Reduction Zone of Continuous Casting Strand and It's Application连铸坯凝固末端轻压下压下区间研究与实践
2.Analysis and Research on Soft Reduction in Continuous Casting of Heavy Rail Bloom;重轨钢连铸大方坯轻压下的分析研究
3.Quadratic Optimal Control on Dynamic Soft-reduction Hydraulic System of Continuous Caster连铸机动态轻压下液压压下系统的最优二次型控制
4.Research and Application of Soft Reduction Model for 280mm×325mm Bloom Continuous Casting Machine with Dynamic Soft Reduction280mm×325mm大方坯连铸动态轻压下压下模型的研究与应用
5.Research and Application of Soft Reduction Amount in Bearing Steel GCr15 Bloom Continuous Casting轴承钢GCr15大方坯轻压下压下量参数的研究与应用
6.Optimization Study on the Pressure Position of Dynamic Soft Reduction for Continuously Cast High-level Pipeline Steel高级别管线钢板坯动态轻压下最佳压下位置研究
7.Application of Dynamic Soft Reduction Technology in High Efficient Continuous Casting in Meishan Steelworks动态轻压下技术在梅山高效连铸中的应用
8.Research on Application of Dynamic Soft Reduction Technology for Medium and Thin and Slab Continuous Caster;中薄板坯连铸动态轻压下技术应用研究
9.Modelling and Control of Dynamic Secondary Cooling and Soft Reduction in Continuous Slab Casting板坯连铸动态二冷与轻压下建模及控制的研究
10.FEM Simulation for Soft Reduction in Rectangular Bloom Continuous Casting矩形坯轻压下过程应力应变分布的有限元模拟
11.Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster360 mm×450 mm方坯连铸动态轻压下技术研究
12.Research of The Control Technology of Dynamic Soft Reduction for Jumbo Bloom Caster大型方坯连铸机动态轻压下控制技术的研究
13.Development and Application of Dynamic Soft Reduction Control Model in Bloom Continuous Casting Machine大方坯连铸动态轻压下控制模型的开发与应用
14.Industrial Application of the Packaged Soft-reduction Technology for Slab Continuous Casting板坯连铸轻压下成套技术的工业化应用
15.Analysis on Action and Reaction Force between Slab and Rollers at Segment of Dynamic Soft Reduction and Application in Casting板坯连铸动态轻压下扇形段的受力分析和应用
16.Development and Application of Dynamic Soft Reduction Model for Slab Casting板坯连铸动态轻压下模型的开发与应用
17.Pilot Production with Dynamic Soft Reduction to Improve Composition Uniformity in Cast Bloom of Heavy Rail Steels轻压下改善重轨钢铸坯成分均匀性的生产试验
18.Key Technologies and Progress of Domestic Development and Application for Dynamic Soft Reduction in Continuous Casting Machine连铸动态轻压下关键技术与自主开发应用进展
相关短句/例句
Soft-reduction轻压下
1.Application and Perspective of Dynamic Soft-reduction Technology for Continuous Casting at Meigang;梅钢连铸动态轻压下技术的应用与展望
2.Design feature of soft-reduction segment of slab continuous caster;板坯连铸机轻压下扇形段的设计特点
3.Application of LPC model in dynamic soft-reduction control;LPC模型在动态轻压下控制中的应用
3)light depression force轻压下力
4)the quantity of lightly presses轻压下量
5)slab soft reduction方坯轻压下
6)dynamic soft reduction动态轻压下
1.Design and realization of dynamic soft reduction process control system for slab continuous casting machine;板坯连铸机动态轻压下过程控制系统的研究与实现
2.High availability(HA) realizing of dynamic soft reduction process control system for slab continuous casting machine;板坯连铸机动态轻压下过程控制系统的高可用性实现
3.Thought of research and development on dynamic soft reduction model for slab continuous casting process in Baosteel(A);宝钢连铸板坯动态轻压下模型的研究与开发思想(上)
延伸阅读
轻压下轻压下soft press q ingyax旧轻压下(soft Press)在连续铸钢过程中,连铸坯拉矫采用液芯矫直时,为了获得无缺陷铸坯,对带液芯的铸坯施加小的压力的工艺方法。即在铸坯凝固终端附近,对铸坯施加一定的压下量,使铸坯凝固终端形成的液相穴被破坏,以抑制浓缩钢水在静压力作用下所自然产生的沿拉坯方向上的移动。连铸钢水在冷凝过程中,低熔点的物质被推向铸坯中心部位,形成了C、S、P、Mn等元素的偏析带,该偏析带在液相穴终端存在于底部;另外,夹辊不对中或辊距过大引起机械性鼓肚(见鼓肚与菱变)也是导致中心偏析和中心裂纹的原因;再者,钢水在结晶器中冷凝,形成激冷层,并从此生长为柱状晶。铸坯进入二冷区后,由于对铸坯进行喷水冷却,铸坯内液相穴的温度梯度大,利于柱状晶迅速生长,而形成“搭桥”现象,并将正在冷凝中的液相穴分开,下部钢水被封闭。被封闭在桥下的钢水,冷凝收缩,富集了C、S、P、Mn等元素的浓缩钢液充填在晶粒间,形成了中心偏析和中心疏松缺陷。基于此,日本的研究者提出了在凝固终端附近,对铸坯施加一定的压下量,破坏凝固终端形成搭桥及封闭的液相穴,抑制浓缩钢水在晶间的充填,以消除或减少中心偏析和中心疏松。经试验研究,得到了预期效果,并得出铸机的辊距越小,中心偏析越低,以及压下率增加,中心偏析有明显改善的结论。压下率大小对偏析的影响的关系式为: 若液相穴长度L,小于7m,临界压下率(%/m)为汉,max<2000/l式中l为辊距。 若液相穴长度L,大于7m,临界压下率为 3c,~<3.913一0.695寸几一6.95日本石墨守信等人经多年的研究认为:就普碳钢而言,铸坯的中心偏析较小,用铸坯生产的中厚板或薄板成品不会有任何质量间题。并得出了轻压下技术的压下位置、压下范围、压下量及铸机辊距等技术规范: 压下位置(液相穴终端)L一DZv/4尸 压下范围L一5.31x10一5/及』 最佳压下量灸r一7.84xl0一“江入少 辊距要求:对连铸机的弧线部分,最大辊距lma二: ,R胜犷_二_ 15李〔1 .9226又10一7共乏笋sin(景)+11.Zjexp ‘“一“’““““、‘一D3一…、R/’一‘’“习一犷 (0.00361。二一2.52) 15)〔1 .9226火1。一军绝竖51。(丢)+:1.2〕exp ‘”一“一“““”、‘“D3一…、R’“甲“J”甲 588lm。、一411600、 Dv 对连铸机的水平部分,最大辊距l~: 15):1 .9226只1。一黔+11.::。、p --一‘----一‘’一D3’--一二一犷 (0 .0026lmax一2.52) 15):1 .9226只1。一7黔+11.:〕。xp --一‘----一’一D吕’-一二一I’ ,5881~,一411600、 刀刃式中x为弧线长度,mm;R为铸机圆弧半径,mm;D为坯厚,mm;无为凝固系数,mm·min一。·5;v为拉速,mm/min。 (李庆鸿)