【摘 要】
：
ASTM s Task Group D01.53.03.03 Coil Coating Task Group on Accelerated Weathering was formed to answer a simple question: Which accelerated test method best correlates with real-time weathering for hi
【机 构】
：
Akzo Nobel Coatings,Inc.,USA
论文部分内容阅读
ASTM s Task Group D01.53.03.03 Coil Coating Task Group on Accelerated Weathering was formed to answer a simple question: Which accelerated test method best correlates with real-time weathering for highly durable coil coatings? A ten-year study was initiated,and coil coated panels were collected from D01.53 coater members for all current coil coatings technologies destined for exterior exposure applications.The real-time panels were weathered in southern Florida and in Phoenix,Arizona.Accelerated weathering was run,including UV- condensation tests ( with both "A" and " B" bulbs),Xenon Arc Weatherometer,Dew Cycle Weatherometer,and Fresnel-type weathering.The study has been completed,and results will be discussed.
其他文献
High temperature deformation characteristics of a microalloyed steel were investigated by a Gleeble 3500 thermo-mechanical test simulator in the temperature range of 950 to 1 150℃ and strain rate rang
对影响加热炉能耗和氧化烧损的主要因素进行了分析。开展了减少氧化烧损、降低炉子能耗的一系列工艺实践，实践证明通过改进加热炉的工作性能,优化加热工艺,提高热送热装的比例和温度,控制好炉内气氛,加强协调管理,规范操作方法,可以有效地控制钢坯的加热时间、加热温度及炉内气氛对钢坯氧化的影响,达到节能降耗、提高钢材成材率的目的.
TRIP ( Transformation induced plasticity) has become the hot point of automobile strips study,it provides the direction of solving the strength and plasticity contradictory.The calculation of CeqcWES,
This paper studies hot rolled Ti + Nb + P-IF steel in austenite region,with cold rolling reduction as the influencing factor.Cold deformation and recrystallization annealing were carried out.And micro
加热炉在热轧生产中的地位越来越重要,不仅是加热炉耗能大,而且加热过程控制的好坏,直接影响到产品质量、尺寸精度和轧制稳定性.加热工艺需要确定合理的在炉时间、在炉温度以及炉内气氛,隐含了对加热质量和加热能耗的要求.正确的加热工艺是产品质量、轧制生产顺行的保证;反之,加热工艺不合理,则容易导致产品过烧、脱碳、裂纹等质量问题,直接影响轧制生产.随着模型技术的深入发展以及节能减排的迫切要求,加热过程着眼于更
Modern strip processing lines have to be economic-efficient and flexible.In a market environment that varies continuously,these two criteria are strongly dependent on each other.Only with flexible pro
主要介绍了宝钢1580 mm热轧采取铁素体轧制工艺生产镀锡板用钢T-2.5CA的工艺参数制定过程及实际轧制效果.通过对化学成分的分析确定了镀锡板用钢T-2.5CA采取铁素体轧制工艺的可行性;根据低温度轧制的特点制定了低温出炉的加热工艺制度;通过对其他相关带钢采取低温生产实际轧制过程变形抗力与变形温度变化情况的分析明确了铁素体轧制时相变发生的位置,并据此制定了粗轧机组及精轧机组的主要工艺参数——变形
针对推土机履带用热轧型钢断面特点与标准要求,通过采取优选孔型系统、数值仿真等技术措施,解决了推土机履带用热轧型钢开发中存在的不均匀变形严重、标准要求高等技术难题,成功开发出203、228节距推土机履带用热轧型钢,产品质量达到标准要求。
针对双辊薄带铸轧的过程控制要求,设计并开发了一个多进程形式的铸轧机过程控制系统.该过程控制系统包括通信进程、实测值处理进程、铸辊温度监控进程和设定值计算进程等8功能相对独立的进程,此种架构设计使系统具有良好的可伸缩性和稳定性.在系统开发过程中,使用自适配通信环境ACE实现进程及线程间的通信,大大降低了开发难度,缩短了开发周期.合理简化铸辊和熔池的换热边界条件,采用热平衡法推导出铸辊温度场计算模型和
本文介绍了一种采用钢轨矫后冷轧保证钢轨通长尺寸均匀性的方法，试验表明该方法不但消除矫直盲区影响，而且能改善矫后残余应力，同时对钢轨使用影响较大的力学性能也没有恶化趋向。