轧辊电火花毛化工艺的建模研究及参数优化
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摘要
为了更精确地控制轧辊毛化粗糙度,提高毛化质量,研究了电火花毛化原理。以Sarclad电火花毛化设备的实验数据为基础,建立了毛化粗糙度与脉宽和电流的数学模型。同时分析了毛化间隙和脉间对毛化质量的影响规律,提出有效控制毛化质量的方法。认为脉宽和电流是影响辊面毛化粗糙度的主要因素,二者组合,能够有效调整毛化粗糙度的数值范围;毛化间隙和脉间对毛化粗糙度数值影响较小,但对毛化稳定性和毛化质量影响较大。当其他参数确定后,调整毛化间隙和脉间能够提高毛化稳定性,改善毛化质量。
In order to control the texturing roughness of roll more accurately and improve texturing quality,the basic EDT principles is analyzed in this paper. Based on the experimental data of Sarclad EDT equipment,the mathematical models of wool roughness,pulse width and current were established. It is considered that pulse width and current are the main factors affecting roughness of roll surface texturing,and the combination of them can effectively adjust the numerical range of texturing roughness. The texturing gap and pulse interval have little influence on the numerical value of texturing roughness,but have great influence on texturing stabilityand texturing quality. When other parameters are determined,adjusting the texturing gap and pulse interval can improve the stability and quality of texturing.
In order to control the texturing roughness of roll more accurately and improve texturing quality,the basic EDT principles is analyzed in this paper. Based on the experimental data of Sarclad EDT equipment,the mathematical models of wool roughness,pulse width and current were established. It is considered that pulse width and current are the main factors affecting roughness of roll surface texturing,and the combination of them can effectively adjust the numerical range of texturing roughness. The texturing gap and pulse interval have little influence on the numerical value of texturing roughness,but have great influence on texturing stabilityand texturing quality. When other parameters are determined,adjusting the texturing gap and pulse interval can improve the stability and quality of texturing.
引文
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[2]刘瑞芬.对机械加工表面质量的分析[J].河北冶金,2006,(4):66~67.
[3]冯莲芹,龚世强,许毅峰.电火花毛化的电参数及稳定性分析[J].宝钢技术,2001:25~29.
[4]王刚,侯印慧.电火花打毛机用于轧辊表面处理及其自动控制系统[J].金属世界,2007,(4):15~17.
[5]徐冬,李洪波,张杰,等.冷轧平整机毛化辊表面形貌特征多参数对比分析[J].中南大学学报,2014,45(3):734~741.
[6]李明辉.电火花加工理论基础[M].北京:机械工业出版社,1992.
[7]井上洁著,帅元伦,于学文译.放电加工的原理—模具加工技术[M],北京:国防工业出版社,1993.
[8]郭咏梅.电火花表面毛化及建模技术的研究[D].大连:大连理工大学. 2000.
[9]杨闪闪.慢走丝线切割加工间隙能量的检测与控制[D].南昌:南昌大学. 2009.
[10]吴长春,张杰,陈先霖,等. EDT毛化轧辊表面凹坑形成过程[J].北京科技大学学报,2007,29(1):59~62.
[11]安会龙,张云涛,江波,等.邯钢2 180 mm连退平整机工作辊毛化参数的优化[J].中国冶金,2013,23(7):45~47.