材料期刊网

Simulation of Strip Rolling Using Elastoplastic Contact BEM With Friction

LI Yugui , HUANG Qingxue , SHEN Guangxian , XIAO Hong , PANG Siqin , WANG Jianmei

钢铁研究学报(英文版)

With rollers as elastic bodies and workpieces as elastoplastic bodies, the rolling problem can be viewed as a friction elasticplastic contact problem. With fewer assumptions in the simulation of striprolling process, a boundary element method (BEM) for twodimensional elastoplastic finite strain and finite deformation analysis of contact problems with friction was presented. All the equations for contact problems, which include multinonlinearities, were obtained. Incremental and iterative procedures were used to find contact pressure and friction stress. Moreover, initial strain rate algorithm and workhardening material behavior can be assumed in the plastic analysis. Several examples were presented, and the results of contact pressure and friction stress were in excellent agreement with those of analysis.

关键词: boundary element method;contact problem;elastoplastic finite deformation;rolling

第27卷B辑作者索引

金属学报

Volu扣ne 27SeriesB1991AUTHOR INDEX CCAO Guanghan(曹光旱)············……6一B科6CAo weijie(曹卫恋)..················……5一B32oCAO Yilin(曹益林)··················……6一B443CHANG Xin(常听)···············……1一B48CHE Guang邻n(车广灿)·············一6一B科0CHEN Erbao(陈二保)···············……6一B410CHEN Jia....

关键词:

提高本钢265 m2冷烧结矿及原料检验代表性的实践

李凤娟 , 吕国光

金属世界 doi:10.3969/j.issn.1000-6826.2014.04.14

通过对烧结配料所需原料及对冷烧结矿成品检验采制样方法的分析，找出影响检验结果真实性的因素，采取有效的改进措施，使本钢原料厂一次配料、本钢炼铁厂265 m2烧结二次配料及265 m2烧结系统各项稳定率有了很大的提高，烧结矿实物质量和各项技术质量指标有了很大的进步，保证了高炉的稳定顺行。
　　提高本钢265 m2冷烧结矿及原料检验代表性的实践
　　Practice of Improving the 265 m2 Cold Sinter and Raw Material Inspection Representative
　　供稿|
　　李凤娟,吕国光/
　　LI Feng-juan, LV Guo-guang
　　DOI：10.3969/j.issn.1000-6826.2014.04.14
　　导读内容
　　本钢炼铁厂265 m2烧结机生产所需要的含铁原料比较复杂，一次配料料种较多，且烧结含铁原料是由本钢原料厂二车间供料，原料质量的不稳定，会影响烧结矿质量的提高和新一号高炉的强化及高炉技术指标的改善。本钢质量管理中心驻冷烧检查站加强了对烧结配料所需原料及对冷烧结矿成品检验采制样代表性的研究，采取了一些改进措施，达到了良好的效果。含铁料成分稳定率、烧结矿各项质量和技术指标在稳步地提高。下面，对本钢质量管理中心驻冷烧检查站就提高采样及检验过程的准确性所采取的措施和办法进行说明。
　　烧结矿采样是半自动采样，每两小时采样一次，作为一个批次，来代表整个2h烧结矿的成份。

关键词: