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介绍了三辊轧管工艺的特点及适用范围.对新开发的三辊轧管机的结构和性能进行了阐述,并对其关键技术、开式机架、轧辊快开装置和压下平衡装置等进行了介绍.该新型三辊轧管机技术先进、操作方便,可作为传统三辊轧管机及其它形式斜轧延伸机的换代产品. 相似文献
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对三辊全浮轧制过程中的轧制力、力矩以及功率等力能参数的计算进行了探讨,所得出的理论计算结果总体上接近于实际值,对实际应用具有一定的参考价值. 相似文献
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结合实际的工程项目,介绍了在天津无缝钢管厂ASSEL轧管机中利用SIEMENS公司的Profibus-DP现场总线技术、工业以太网技术以及WinCC组态软件设计实现的一个监控系统。 相似文献
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栗志红 《机械工程与自动化》2010,(4):188-189
介绍了天津钢管有限公司三辊轧管机的主要技术参数。分析了三辊轧管机轧制的钢管产生内螺纹缺陷的主要原因,并提出了减少该缺陷的相应措施。 相似文献
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本文简要介绍了在φ100自动轧管机组轧制过程中对钢管进行第二道纵轧前钢管周向旋转90°的机构。 相似文献
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Wang XiaokaiHua Lin 《Measurement》2011,44(4):685-691
This paper analyzes the interaction modes and rules between ring and rollers in vertical ring rolling process, and then establishes mathematical models of ring geometric shape and size corresponding to various guide modes. Using the models, the accurate expressions of ring’s radius are derived. Furthermore, the geometrical surfaces which represent the relations of ring’s outer radius versus displacement of driving roller and measuring roller are constructed. To obtain simple formulas suitable for the Programmable Logic Controller (PLC), the precise and simple functions of ring’s outer radius in rolling process are derived based on the surface-fitting method. In addition, a reliable displacement measurement device which is composed of the raster rulers and PLC is also introduced. The results of this paper can supply a practical method for on-line measurement and process control of vertical ring rolling. 相似文献
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There are many intermediate web guides in cold rolling mills process such as CRM (cold rolling mill), CGL (continuous galvanizing
line), EGL (electrical galvanizing line) and so on. The main functions of the web guides are to adjust the center line of
the web (strip) to the center line of the steel process. So they are called CPC (center position control). Rapid process speed
cause large deviation between the center position of the strip and the process line. Too much deviation is not desirable.
So the difference between the center position of the strip and the process line should be compensated. In general, the center
position control of the web is obtained by the hydraulic driver and electrical controller. In this paper, we propose modelling
and several controller designs for web-guide systems. We model the web and guide by using geometrical relations of the guide
ignored the mass and stiffness of the web. To control the systems, we propose PID controllers with their gains tuned by the
Ziegler-Nichols method, the H∞ controller model-matching method, and the coefficient diagram method (CDM). CDM is modified
for high order systems. The results are verified by computer simulations. 相似文献
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利用金相分析、能谱分析等方法 ,对高速轧钢机轧辊早期失效原因进行分析 ,得出因轧辊中的成分偏析造成早期失效 ,并提出改进措施。 相似文献
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轧机振动及非线性分析 总被引:7,自引:0,他引:7
分析了轧机振动的形式,扭转振动、垂直振动以及机电共振,并从机电两方面分析了轧机产生振动的原因,主要是由设备的间隙、电机内部非线性及功率元件的非线性等因素引起。 相似文献