冷弯机轧辊的热处理

冷弯机轧辊的热处理广州机电工业研究所（广州５１０２８０）阮广德，张小聪，陈志光，梁航１前言用于煤气和自来水管道工程的直缝焊管，是用钢带在冷弯机组上经多道轧辊的轧制和高频焊接而成的。每台机组有不同形状的轧辊２０多对。这种轧辊在工作中承受大的载荷，复杂的...     

热轧钨材用的复合轧辊的研制

国内某电子材料总厂用150万英磅从英国进口了一台西德制造的Kocks轧机机组，用于热轧经粉末烧结的高温金属钨材，随机进口的轧辊于1990年中用完，进口该机组时未同时引进配套轧辊的制造技术，由于钨材热轧温度为1600℃高温，加上高速轧制时的冲击力。要求轧辊具有中心韧性好和表面高温硬度优良的综合性能，本文总结国产化轧辊的研制过程。     

热轧钨材用的复合轧辊的研制

国内某电子材料总厂用150万英磅从英国进口了一台西德制造的Kocks轧机机组，用于热轧经粉末烧结的高温金属铝材，随机进口的轧辊于1990年中用完，进口该机组时未同时引进配套轧辊的制造技术。由于钨材热轧温度为1600℃高温，加上高速轧制时的冲击力，要求轧辊具有中心韧性好和表面高温硬度优良的综合性能。本文总结国产化轧辊的研制过程。     

文摘

文摘９６０６２７连轧管机用高速钢轧辊［刊，日］／佐藤秀雄…／／材料—１９９５（２）日本川崎制铁公司知多制铁所小型无缝钢管厂，为提高轧辊寿命和降低轧辊消耗，在连轧管机组上用高速钢轧辊取代以前使用的球墨铸铁和高铭铸钢轧辊，取得明显效果。高速钢轧辊成分：Ｃ...     

阿塞尔轧管机轧辊材质与辊型的改进

介绍了大连得胜无缝钢管厂φ60mm轧管机组阿塞尔轧管机轧辊材质与辊型的改进情况。使用改进后的轧辊，增强了辊面的抗热疲劳性能，提高了产品的表面质量，降低了轧制压力，延长了轧辊与轧辊轴承的使用寿命。     

Φ76mm焊管机组的改进

介绍了青岛祥兴铜管有限公司对原Φ76mm焊管机组在轧辊开距、导向套孔径、飞锯夹紧装置、轧辊辊型构造等方面进行的改进。此改进扩大了机组的产品生产范围，实现了既能生产Φ76mm以下规格的焊管，又能生产Φ76～95mm焊管的目标。     

直缝焊管轧辊计算机辅助设计软件

前言焊管轧辊参数设计是直缝焊管生产中的重要环节。用手工计算轧辊参数,不但工作量大,而且设计的轧辊参数往往因人而异,致使轧辊厂很难根据钢管的规格和机组形式生产标准化、系列化的轧辊,因而不利于产品质量的提高和缩短加工周期。     

离心复合轧辊的应用及轧辊失效分析

对重力浇铸和离心浇铸轧辊进行了比较,指出离心复合轧辊具有组织均匀致密、硬度高且变化小、力学性能好、使用寿命长等优点。详细分析了PQF连轧管机组的轧辊失效原因,提出了预防轧辊失效的方法：加强轧辊检查,合理控制轧制节奏,预热轧辊,控制换辊周期等。     

Φ258mm PQF连轧管机组连轧辊的优化设计与应用

针对Φ258mm PQF连轧管机组在实际生产过程中经常出现的辊轴相对错位和断辊现象,提出了辊轴一体设计和离心复合制作工艺的新设想,同时采取了辊轴分离优化应用的措施。生产实践证明,Φ258mmPQF连轧管机组的连轧辊优化设计应用达到预期的效果,同时,辊轴一体和辊轴分离连轧辊的使用寿命对比分析结果,体现了轧辊设计改进的意义和效果。     

穿孔机轧辊设计初探

结合我国新近引进的无缝钢管机组，系统地探讨了二辊斜轧穿孔机的轧辊参数设计原则，给出了主要参数的计算公式和设计中应注意的问题。     

Coupling solved roll contact pressure transverse distribution of HC strip mill

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Development of satellite mill and trial rolling of profiled metal strip

A new type of compact continuous mill called the “Satellite mill” has been developed to produce profiled metal strip from flat strip. This mill consists of one large-diameter driven roll (central roll) and five smaller rolls (satellite rolls) arranged along the periphery of the central roll. A strip is continuously rolled at five gaps between the central roll and the satellite rolls. All rolls are driven at an equal roll peripheral speed to promote transverse metal flow or lateral spread. Guide shoes are provided between the adjacent satellite rolls and are supported with two adjacent satellite rolls. They prevent a strip from bulging or buckling. A test mill was constructed, and rolling experiments have been performed on the production of T-shaped or U-shaped profiled aluminum strip. The deformation- load characteristics were investigated and compared with those of conventional rolling. As a result, in the satellite mill rolling operation, elongation was suppressed. Lateral spread was enhanced, and the profile of the product cross section was significantly improved. Consequently, the new rolling process was found to be forming of profiled metal strip.     

二十辊森吉米尔轧机辊系稳定性的有限元分析

应用ABAQUS有限元软件建立了二十辊轧机有限元分析模型,研究了不同辊径配置及不同轧制力工况对二十辊森吉米尔轧机辊系稳定性的影响。结果表明:第1中间辊辊径差不小于2mm时,第1中间辊和第2中间辊被挤出;第2中间辊辊径差不小于4mm时,辊系失稳散落;第2中间随动辊比驱动辊小,会使第1中间辊辊间距变小,并使第2中间驱动辊与B、C支撑辊接触点的应力变小。随着轧制力的增大,第1中间辊的辊间距增大,第2中间驱动辊与B、C支撑辊接触点处的应力也增大。     

厚度小于2．5mm热轧焊管坯生产

采用“三辊异径”工艺对热轧窄带钢轧机进行了改造，即在原二辊之间增加一被动小工作辊，轧件在小工作辊与原下工作辊之间通过，轧制压力可下降４９％～６２％，所轧带钢可减薄，且平直度和表面质量均很好。简介了该工艺的特点和生产情况以及经济效益。     

辊型优化技术在宝钢冷轧平整机上的应用

将平整机轧制力和剪张应力横向分布的数学模型。与平整机辊系弹性变形相结合,建立了平整机板形计算理论,在此基础上以前张应力偏差平方和为目标函数优化设计了宝钢冷轧厂ＣＡＰＬ平整机工作辊辊型和支承辊肩部辊型,并优化了弯辊力设定值。产生实验表明,优化辊型提高了平整机的稳定性,因板形不良导致的废次品量、封闭量下降。用该优化结果制定的支承辊辊型磨削加工标准已用于工业生产。     

Rolling of T-shaped profiled strip by the satellite mill

A new type of compact mill called a “satellite mill” is used for producing T-shaped profiled strip from flat strip. The mill comprises one large-diameter flat roll (central roll) and five smaller-diameter caliber rolls (satellite rolls) arranged along the periphery of the central roll. The flat strip is continuously passed through the five gaps between the central roll and the satellite rolls and formed into a T shape. All rolls are driven at an equal peripheral speed to restrain elongation of strip and to promote transversal metal flow. A guide shoe is provided between each two adjacent satellite rolls to prevent the strip from bulging out or buckling. Using aluminum as a model material, some rolling experiments were performed on the mill. T-shaped profiled strips with a thickness ratio (thickness of thick part per thickness of thin part) as high as three were rolled successfully. When deformation and force characteristics were investigated, it was found that, in comparison to a conventional multipass caliber rolling, the elongation of the strip is suppressed and the filling ability is much improved.     

Analysis of rolls deflection of Sendzimir mill by 3D FEM

The deflection of rolls of Sendzimir mill with double AS-U-Roll was simulated by finite element method（FEM）. The influences of rolling pressure, strip width and rolls-assignment on rolls deflection were analyzed. The results show that the work roll deflection increases with the increase of rolling pressure and the reduction of work roll radius, but the rigid displacement of work roll slightly changes; the work roll end might appear negative displacement for the narrow strip width and high rolling pressure that might cause the contact of work rolls. The research results are significant for guiding production and theoretical analysis of the rolls system of Sendzimir mill.     

有限元法计算铝带轧机的辊系变形

用ANSYS有限元方法建立了铝带轧机辊系变形数学模型。分别计算了不同轧件宽度时各轧制道次辊缝处轧辊的变形，以及工作辊与支持辊间的压扁和压力的轴向分布。分析了不同轧件宽度时各道次铝带的比例凸度及对板形的影响，与现场板形目测情况吻合。该计算方法可用做厚度大于0.1mm的铝带轧机辊系变形数学模型。     

轧辊可靠性分析

针对轧制过程中轧辊存在的折断、表面剥落等失效问题,采用数值分析方法,结合累计损伤理论、损伤容限分析理论和疲劳可靠性分析方法,对轧辊的失效问题进行了研究,分析了轧制道次的场变量,对轧辊寿命进行了预测和可靠性计算。     

六辊铝板带冷轧机轧辊倒角仿真分析及工艺优化

辊间压痕是制约六辊铝板带冷轧机实现中间辊抽动功能从而达到改善板形目的的一大障碍。在现场考察的基础上,基于Abaqus有限元软件对六辊铝板带冷轧机进行了辊系受力仿真,得到了辊间受力的情况,分析并验证了辊间压痕的成因是由轧辊倒角设计不合理或磨辊时处理不当,没有把倒圆角倒到规定的标准所造成,并由此提出了对轧辊倒角设计的改进方案并对倒角改进后的辊系受力进行了有限元仿真。结果表明,采用所提出的倒角改进方案能够大幅度减轻辊间压痕,从而对充分发挥六辊轧机的板形控制能力,对改善板形具有重要的意义。